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description Publicationkeyboard_double_arrow_right Article , Conference object , Data Paper 2021 Italy, Italy, New Zealand, France, Italy, ItalyPublisher:MDPI AG Funded by:EC | IceCommunitiesEC| IceCommunitiesSilvio Marta; Roberto Sergio Azzoni; Davide Fugazza; Levan Tielidze; Pritam Chand; Katrin Sieron; Peter Almond; Roberto Ambrosini; Fabien Anthelme; Pablo Alviz Gazitúa; Rakesh Bhambri; Aurélie Bonin; Marco Caccianiga; Sophie Cauvy-Fraunié; Jorge Luis Ceballos Lievano; John Clague; Justiniano Alejo Cochachín Rapre; Olivier Dangles; Philip Deline; Andre Eger; Rolando Cruz Encarnación; Sergey Erokhin; Andrea Franzetti; Ludovic Gielly; Fabrizio Gili; Mauro Gobbi; Alessia Guerrieri; Sigmund Hågvar; Norine Khedim; Rahab Kinyanjui; Erwan Messager; Marco Aurelio Morales-Martínez; Gwendolyn Peyre; Francesca Pittino; Jerome Poulenard; Roberto Seppi; Milap Chand Sharma; Nurai Urseitova; Blake Weissling; Yan Yang; Vitalii Zaginaev; Anaïs Zimmer; Guglielmina Adele Diolaiuti; Antoine Rabatel; Gentile Francesco Ficetola;doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
Most of the world’s mountain glaciers have been retreating for more than a century in response to climate change. Glacier retreat is evident on all continents, and the rate of retreat has accelerated during recent decades. Accurate, spatially explicit information on the position of glacier margins over time is useful for analyzing patterns of glacier retreat and measuring reductions in glacier surface area. This information is also essential for evaluating how mountain ecosystems are evolving due to climate warming and the attendant glacier retreat. Here, we present a non-comprehensive spatially explicit dataset showing multiple positions of glacier fronts since the Little Ice Age (LIA) maxima, including many data from the pre-satellite era. The dataset is based on multiple historical archival records including topographical maps; repeated photographs, paintings, and aerial or satellite images with a supplement of geochronology; and own field data. We provide ESRI shapefiles showing 728 past positions of 94 glacier fronts from all continents, except Antarctica, covering the period between the Little Ice Age maxima and the present. On average, the time series span the past 190 years. From 2 to 46 past positions per glacier are depicted (on average: 7.8).
Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Data Paper 2021 Italy, Italy, New Zealand, France, Italy, ItalyPublisher:MDPI AG Funded by:EC | IceCommunitiesEC| IceCommunitiesSilvio Marta; Roberto Sergio Azzoni; Davide Fugazza; Levan Tielidze; Pritam Chand; Katrin Sieron; Peter Almond; Roberto Ambrosini; Fabien Anthelme; Pablo Alviz Gazitúa; Rakesh Bhambri; Aurélie Bonin; Marco Caccianiga; Sophie Cauvy-Fraunié; Jorge Luis Ceballos Lievano; John Clague; Justiniano Alejo Cochachín Rapre; Olivier Dangles; Philip Deline; Andre Eger; Rolando Cruz Encarnación; Sergey Erokhin; Andrea Franzetti; Ludovic Gielly; Fabrizio Gili; Mauro Gobbi; Alessia Guerrieri; Sigmund Hågvar; Norine Khedim; Rahab Kinyanjui; Erwan Messager; Marco Aurelio Morales-Martínez; Gwendolyn Peyre; Francesca Pittino; Jerome Poulenard; Roberto Seppi; Milap Chand Sharma; Nurai Urseitova; Blake Weissling; Yan Yang; Vitalii Zaginaev; Anaïs Zimmer; Guglielmina Adele Diolaiuti; Antoine Rabatel; Gentile Francesco Ficetola;doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
Most of the world’s mountain glaciers have been retreating for more than a century in response to climate change. Glacier retreat is evident on all continents, and the rate of retreat has accelerated during recent decades. Accurate, spatially explicit information on the position of glacier margins over time is useful for analyzing patterns of glacier retreat and measuring reductions in glacier surface area. This information is also essential for evaluating how mountain ecosystems are evolving due to climate warming and the attendant glacier retreat. Here, we present a non-comprehensive spatially explicit dataset showing multiple positions of glacier fronts since the Little Ice Age (LIA) maxima, including many data from the pre-satellite era. The dataset is based on multiple historical archival records including topographical maps; repeated photographs, paintings, and aerial or satellite images with a supplement of geochronology; and own field data. We provide ESRI shapefiles showing 728 past positions of 94 glacier fronts from all continents, except Antarctica, covering the period between the Little Ice Age maxima and the present. On average, the time series span the past 190 years. From 2 to 46 past positions per glacier are depicted (on average: 7.8).
Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2011 FrancePublisher:OpenEdition Authors: David, Gilbert;handle: 20.500.13089/lqg1
Le présent article pose comme hypothèse principale qu’il existe une spécificité insulaire en matière de changement climatique, tant dans le domaine géopolitique que dans le domaine économique. A la différence des pays continentaux, le changement climatique est un facteur de structuration des États insulaires. Créée en 1990, 2 ans après que le GIEC commence ses travaux, l’Alliance des Petits États insulaires (AOSIS) s’est beaucoup investie dans la ratification du Protocole de Kyoto. Ces derniers se considèrent en effet comme les premières et principales victimes du changement climatique dont le coût pour leurs économies sera nettement plus élevé que celui supporté par les pays continentaux. Aux coûts directs, résultant de l’aléa naturel, notamment la montée du niveau de la mer et l’érosion du littoral qui lui est associée, se surimposeront des coûts induits par les mesures prises au niveau international pour lutter contre le changement climatique. Ces mesures conduisent à remettre la distance géographique au cœur de la logique de localisation des entreprises. La limitation des déplacements aériens et maritimes au long cours qui en résultera devrait entraîner une réduction de la demande mondiale pour les produits et services touristiques insulaires, suivie d’une concurrence exacerbée entre les îles pour attirer cette demande réduite. On assistera alors à la marginalisation des économies insulaires ne pouvant se positionner sur des marchés de niche aux échelles mondiales et régionales avec pour principaux corollaires l’exode rural et la migration internationale. Les recompositions économiques et territoriales qui s’annoncent sont des processus durables qui s’inscrivent dans le temps long. En revanche, le sommet de Copenhague a montré que la structuration politique des États insulaires sur la scène internationale est un processus fragile. L’AOSIS est sortie éclatée de ce sommet. L’avenir des îles est définitivement sous contrainte du changement climatique et il s’annonce bien sombre.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2011 FrancePublisher:OpenEdition Authors: David, Gilbert;handle: 20.500.13089/lqg1
Le présent article pose comme hypothèse principale qu’il existe une spécificité insulaire en matière de changement climatique, tant dans le domaine géopolitique que dans le domaine économique. A la différence des pays continentaux, le changement climatique est un facteur de structuration des États insulaires. Créée en 1990, 2 ans après que le GIEC commence ses travaux, l’Alliance des Petits États insulaires (AOSIS) s’est beaucoup investie dans la ratification du Protocole de Kyoto. Ces derniers se considèrent en effet comme les premières et principales victimes du changement climatique dont le coût pour leurs économies sera nettement plus élevé que celui supporté par les pays continentaux. Aux coûts directs, résultant de l’aléa naturel, notamment la montée du niveau de la mer et l’érosion du littoral qui lui est associée, se surimposeront des coûts induits par les mesures prises au niveau international pour lutter contre le changement climatique. Ces mesures conduisent à remettre la distance géographique au cœur de la logique de localisation des entreprises. La limitation des déplacements aériens et maritimes au long cours qui en résultera devrait entraîner une réduction de la demande mondiale pour les produits et services touristiques insulaires, suivie d’une concurrence exacerbée entre les îles pour attirer cette demande réduite. On assistera alors à la marginalisation des économies insulaires ne pouvant se positionner sur des marchés de niche aux échelles mondiales et régionales avec pour principaux corollaires l’exode rural et la migration internationale. Les recompositions économiques et territoriales qui s’annoncent sont des processus durables qui s’inscrivent dans le temps long. En revanche, le sommet de Copenhague a montré que la structuration politique des États insulaires sur la scène internationale est un processus fragile. L’AOSIS est sortie éclatée de ce sommet. L’avenir des îles est définitivement sous contrainte du changement climatique et il s’annonce bien sombre.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 FrancePublisher:Schweizerbart Weinberg, J.; Ota, N.; Goergen, Georg; Fagbohoun, J.R.; Tepa-Yotto, G.; Kriticos, D.J.;handle: 10568/126592
Spodoptera eridania (Stoll), a polyphagous lepidopteran pest from the Americas, has recently invaded western and central Africa. Like its congeners, S. eridania has developed pesticide resistance. The rapid global spread and impacts of Spodoptera frugiperda (J.E. Smith) has raised concerns about whether S. eridania is set to do the same. Here we fit a CLIMEX niche model for S. eridania and apply a climate change scenario for 2050 to investigate the sensitivity of the pest threat. We find that S. eridania can potentially expand its range throughout the tropics and into the sub-tropics, threatening a range of important commercial and subsistence crops. An important feature of the pest threat posed by S. eridania is the extent of its ephemeral habitat during warmer months. Modelled climatic changes will mostly expand this species potential range poleward by around 200 km by 2050, indicating a moderate sensitivity. These areas of emerging potential expansion are mostly into subtropical climates, supporting diverse cropping systems, including at risk crops beans, groundnut, potato, soybeans, tomato and sweet potato. The potential distribution of S. eridania in the Amazon basin and the southern boundary of the Sahara Desert appear set to contract substantially due to increasing heat stress. While it may not be as invasive as some of its congeners, nor acquire pesticide resistance as readily, S. eridania does have some of these traits, and the current and emerging pest threat posed by this moth deserves closer attention, especially in relation to intercontinental phytosanitary measures to slow its spread.
CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 FrancePublisher:Schweizerbart Weinberg, J.; Ota, N.; Goergen, Georg; Fagbohoun, J.R.; Tepa-Yotto, G.; Kriticos, D.J.;handle: 10568/126592
Spodoptera eridania (Stoll), a polyphagous lepidopteran pest from the Americas, has recently invaded western and central Africa. Like its congeners, S. eridania has developed pesticide resistance. The rapid global spread and impacts of Spodoptera frugiperda (J.E. Smith) has raised concerns about whether S. eridania is set to do the same. Here we fit a CLIMEX niche model for S. eridania and apply a climate change scenario for 2050 to investigate the sensitivity of the pest threat. We find that S. eridania can potentially expand its range throughout the tropics and into the sub-tropics, threatening a range of important commercial and subsistence crops. An important feature of the pest threat posed by S. eridania is the extent of its ephemeral habitat during warmer months. Modelled climatic changes will mostly expand this species potential range poleward by around 200 km by 2050, indicating a moderate sensitivity. These areas of emerging potential expansion are mostly into subtropical climates, supporting diverse cropping systems, including at risk crops beans, groundnut, potato, soybeans, tomato and sweet potato. The potential distribution of S. eridania in the Amazon basin and the southern boundary of the Sahara Desert appear set to contract substantially due to increasing heat stress. While it may not be as invasive as some of its congeners, nor acquire pesticide resistance as readily, S. eridania does have some of these traits, and the current and emerging pest threat posed by this moth deserves closer attention, especially in relation to intercontinental phytosanitary measures to slow its spread.
CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2020 India, Australia, France, IndiaPublisher:Elsevier BV Sunita Choudhary; Sunita Choudhary; Charlie Messina; Vincent Vadez; Vincent Vadez; Anirban Guha; Jana Kholova; Mark E. Cooper; Anand Pandravada;pmid: 32534623
This study compared maize, sorghum and pearl-millet, leading C4 cereals, for the transpiration rate (TR) response to increasing atmospheric and soil water stress. The TR response to transiently increasing VPD (0.9-4.1 kPa) and the transpiration and leaf area expansion response to progressive soil drying were measured in controlled conditions at early vegetative stage in 10-16 genotypes of each species grown in moderate or high vapor pressure deficit (VPD) conditions. Maize grown under moderate VPD conditions restricted TR under high VPD, but not sorghum and pearl millet. By contrast, when grown under high VPD, all species increased TR upon increasing VPD, suggesting a loss of TR responsiveness. Sorghum and pearl-millet grown under high VPD reduced leaf area, but not maize. Upon progressive soil drying, maize reduced transpiration at higher soil moisture than sorghum and pearl millet, especially under high VPD, and leaf area expansion declined at similar or lower soil moisture than transpiration in maize and sorghum. It is concluded that maize conserves water by restricting transpiration upon increasing VPD and under higher soil moisture than sorghum and millet, giving maize significantly higher TE, whereas sorghum and pearl millet rely mostly on reduced leaf area and somewhat on transpiration restriction.
Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 50 citations 50 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2020 India, Australia, France, IndiaPublisher:Elsevier BV Sunita Choudhary; Sunita Choudhary; Charlie Messina; Vincent Vadez; Vincent Vadez; Anirban Guha; Jana Kholova; Mark E. Cooper; Anand Pandravada;pmid: 32534623
This study compared maize, sorghum and pearl-millet, leading C4 cereals, for the transpiration rate (TR) response to increasing atmospheric and soil water stress. The TR response to transiently increasing VPD (0.9-4.1 kPa) and the transpiration and leaf area expansion response to progressive soil drying were measured in controlled conditions at early vegetative stage in 10-16 genotypes of each species grown in moderate or high vapor pressure deficit (VPD) conditions. Maize grown under moderate VPD conditions restricted TR under high VPD, but not sorghum and pearl millet. By contrast, when grown under high VPD, all species increased TR upon increasing VPD, suggesting a loss of TR responsiveness. Sorghum and pearl-millet grown under high VPD reduced leaf area, but not maize. Upon progressive soil drying, maize reduced transpiration at higher soil moisture than sorghum and pearl millet, especially under high VPD, and leaf area expansion declined at similar or lower soil moisture than transpiration in maize and sorghum. It is concluded that maize conserves water by restricting transpiration upon increasing VPD and under higher soil moisture than sorghum and millet, giving maize significantly higher TE, whereas sorghum and pearl millet rely mostly on reduced leaf area and somewhat on transpiration restriction.
Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 50 citations 50 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2013 FrancePublisher:Elsevier BV /Gilles, Sylvain; Fargier, L.; /Lazzaro, Xavier; /Baras, Etienne; De Wilde, N.; Drakides, C.; Amiel, C.; Rispal, B.; Blancheton, J. P.;pmid: 23031842
Integrated Multi-Trophic Aquaculture takes advantage of the mutualism between some detritivorous fish and phytoplankton. The fish recycle nutrients by consuming live (and dead) algae and provide the inorganic carbon to fuel the growth of live algae. In the meanwhile, algae purify the water and generate the oxygen required by fishes. Such mechanism stabilizes the functioning of an artificially recycling ecosystem, as exemplified by combining the euryhaline tilapia Sarotherodon melanotheron heudelotii and the unicellular alga Chlorella sp. Feed addition in this ecosystem results in faster fish growth but also in an increase in phytoplankton biomass, which must be limited. In the prototype described here, the algal population control is exerted by herbivorous zooplankton growing in a separate pond connected in parallel to the fish-algae ecosystem. The zooplankton production is then consumed by tilapia, particularly by the fry and juveniles, when water is returned to the main circuit. Chlorella sp. and Brachionus plicatilis are two planktonic species that have spontaneously colonized the brackish water of the prototype, which was set-up in Senegal along the Atlantic Ocean shoreline. In our system, water was entirely recycled and only evaporation was compensated (1.5% volume/day). Sediment, which accumulated in the zooplankton pond, was the only trophic cul-de-sac. The system was temporarily destabilized following an accidental rotifer invasion in the main circuit. This caused Chlorella disappearance and replacement by opportunist algae, not consumed by Brachionus. Following the entire consumption of the Brachionus population by tilapias, Chlorella predominated again. Our artificial ecosystem combining S. m. heudelotii, Chlorella and B. plicatilis thus appeared to be resilient. This farming system was operated over one year with a fish productivity of 1.85 kg/m2 per year during the cold season (January to April).
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 12 citations 12 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2013 FrancePublisher:Elsevier BV /Gilles, Sylvain; Fargier, L.; /Lazzaro, Xavier; /Baras, Etienne; De Wilde, N.; Drakides, C.; Amiel, C.; Rispal, B.; Blancheton, J. P.;pmid: 23031842
Integrated Multi-Trophic Aquaculture takes advantage of the mutualism between some detritivorous fish and phytoplankton. The fish recycle nutrients by consuming live (and dead) algae and provide the inorganic carbon to fuel the growth of live algae. In the meanwhile, algae purify the water and generate the oxygen required by fishes. Such mechanism stabilizes the functioning of an artificially recycling ecosystem, as exemplified by combining the euryhaline tilapia Sarotherodon melanotheron heudelotii and the unicellular alga Chlorella sp. Feed addition in this ecosystem results in faster fish growth but also in an increase in phytoplankton biomass, which must be limited. In the prototype described here, the algal population control is exerted by herbivorous zooplankton growing in a separate pond connected in parallel to the fish-algae ecosystem. The zooplankton production is then consumed by tilapia, particularly by the fry and juveniles, when water is returned to the main circuit. Chlorella sp. and Brachionus plicatilis are two planktonic species that have spontaneously colonized the brackish water of the prototype, which was set-up in Senegal along the Atlantic Ocean shoreline. In our system, water was entirely recycled and only evaporation was compensated (1.5% volume/day). Sediment, which accumulated in the zooplankton pond, was the only trophic cul-de-sac. The system was temporarily destabilized following an accidental rotifer invasion in the main circuit. This caused Chlorella disappearance and replacement by opportunist algae, not consumed by Brachionus. Following the entire consumption of the Brachionus population by tilapias, Chlorella predominated again. Our artificial ecosystem combining S. m. heudelotii, Chlorella and B. plicatilis thus appeared to be resilient. This farming system was operated over one year with a fish productivity of 1.85 kg/m2 per year during the cold season (January to April).
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 12 citations 12 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2017 FrancePublisher:Public Library of Science (PLoS) Glato Kodjo; Atsou Aïdam; Ndjido Ardo Kane; Diallo Bassirou; Marie Couderc; Leïla Zekraoui; Nora Scarcelli; Adéline Barnaud; Yves Vigouroux;pmid: 28552989
pmc: PMC5446114
L'agriculture subsaharienne a été identifiée comme vulnérable au changement climatique en cours. L'adaptation de l'agriculture a été suggérée comme un moyen de maintenir la productivité. Une meilleure connaissance de la diversité intra-spécifique des variétés est une condition préalable à la bonne gestion de cette adaptation. Parmi les cultures, les racines et les tubercules jouent un rôle important dans la sécurité alimentaire et la croissance économique des populations les plus vulnérables d'Afrique. Ici, nous nous concentrons sur la patate douce. La patate douce (Ipomoea batatas) a été domestiquée en Amérique centrale et en Amérique du Sud et a ensuite été introduite en Afrique et est maintenant cultivée dans toute l'Afrique tropicale. Nous avons évalué sa diversité en Afrique de l'Ouest en échantillonnant une région s'étendant de la zone côtière du Togo à la région septentrionale sahélienne du Sénégal qui représente une gamme de conditions climatiques. À l'aide de 12 marqueurs microsatellites, nous avons évalué 132 variétés le long de ce gradient. Des données phénotypiques issues d'essais sur le terrain menés en trois saisons ont également été obtenues. La diversité génétique en Afrique de l'Ouest s'est avérée inférieure de 18 % à celle des États-Unis. La diversité génétique en Afrique de l'Ouest est structurée en cinq groupes, certains groupes se trouvant dans des zones climatiques très spécifiques, par exemple sous un climat tropical humide ou sous un climat sahélien. Nous avons également observé des groupes génétiques qui se produisent dans un plus large éventail de climats. Les groupes génétiques ont également été associés à la différenciation morphologique, principalement la forme des feuilles et la couleur de la tige ou de la racine. Cette structure particulière de la diversité le long d'un gradient climatique avec association à la variabilité phénotypique peut être utilisée pour des stratégies de conservation. S'il s'avère qu'une telle structure est associée à une adaptation climatique spécifique, elle permettra également de développer des stratégies pour adapter l'agriculture aux variations climatiques en cours en Afrique de l'Ouest. La agricultura subsahariana ha sido identificada como vulnerable al cambio climático en curso. Se ha sugerido la adaptación de la agricultura como una forma de mantener la productividad. Un mejor conocimiento de la diversidad intraespecífica de variedades es un requisito previo para el manejo exitoso de dicha adaptación. Entre los cultivos, la raíz y los tubérculos desempeñan un papel importante en la seguridad alimentaria y el crecimiento económico de las poblaciones más vulnerables de África. Aquí, nos centramos en la batata. La batata (Ipomoea batatas) se domesticó en América Central y del Sur y más tarde se introdujo en África y ahora se cultiva en toda el África tropical. Evaluamos su diversidad en África Occidental mediante el muestreo de una región que se extiende desde la zona costera de Togo hasta la región septentrional del Sahel en Senegal y que representa una variedad de condiciones climáticas. Utilizando 12 marcadores de microsatélites, evaluamos 132 variedades a lo largo de este gradiente. También se obtuvieron datos fenotípicos de ensayos de campo realizados en tres temporadas. Se encontró que la diversidad genética en África Occidental era un 18% menor que en América. La diversidad genética en África Occidental se estructura en cinco grupos, y algunos grupos se encuentran en áreas climáticas muy específicas, por ejemplo, en un clima tropical húmedo o en un clima saheliano. También observamos grupos genéticos que se producen en una gama más amplia de climas. Los grupos genéticos también se asociaron con la diferenciación morfológica, principalmente la forma de las hojas y el color del tallo o raíz. Esta estructura particular de diversidad a lo largo de un gradiente climático con asociación a la variabilidad fenotípica se puede utilizar para estrategias de conservación. Si se demuestra que dicha estructura está asociada con una adaptación climática específica, también permitirá desarrollar estrategias para adaptar la agricultura a la variación climática en curso en África Occidental. Sub-Saharan agriculture has been identified as vulnerable to ongoing climate change. Adaptation of agriculture has been suggested as a way to maintain productivity. Better knowledge of intra-specific diversity of varieties is prerequisites for the successful management of such adaptation. Among crops, root and tubers play important roles in food security and economic growth for the most vulnerable populations in Africa. Here, we focus on the sweet potato. The Sweet potato (Ipomoea batatas) was domesticated in Central and South America and was later introduced into Africa and is now cultivated throughout tropical Africa. We evaluated its diversity in West Africa by sampling a region extending from the coastal area of Togo to the northern Sahelian region of Senegal that represents a range of climatic conditions. Using 12 microsatellite markers, we evaluated 132 varieties along this gradient. Phenotypic data from field trials conducted in three seasons was also obtained. Genetic diversity in West Africa was found to be 18% lower than in America. Genetic diversity in West Africa is structured into five groups, with some groups found in very specific climatic areas, e.g. under a tropical humid climate, or under a Sahelian climate. We also observed genetic groups that occur in a wider range of climates. The genetic groups were also associated with morphological differentiation, mainly the shape of the leaves and the color of the stem or root. This particular structure of diversity along a climatic gradient with association to phenotypic variability can be used for conservation strategies. If such structure is proved to be associated with specific climatic adaptation, it will also allow developing strategies to adapt agriculture to ongoing climate variation in West Africa. تم تحديد الزراعة في جنوب الصحراء على أنها عرضة لتغير المناخ المستمر. تم اقتراح تكييف الزراعة كوسيلة للحفاظ على الإنتاجية. إن المعرفة الأفضل بتنوع الأصناف داخل الأنواع هو شرط أساسي للإدارة الناجحة لهذا التكيف. من بين المحاصيل، تلعب الجذور والدرنات أدوارًا مهمة في الأمن الغذائي والنمو الاقتصادي للفئات السكانية الأكثر ضعفًا في أفريقيا. هنا، نركز على البطاطا الحلوة. تم تدجين البطاطا الحلوة (إيبومويا باتاتاس) في أمريكا الوسطى والجنوبية وتم إدخالها لاحقًا إلى إفريقيا ويتم زراعتها الآن في جميع أنحاء إفريقيا الاستوائية. قمنا بتقييم تنوعها في غرب إفريقيا من خلال أخذ عينات من منطقة تمتد من المنطقة الساحلية لتوغو إلى منطقة الساحل الشمالي للسنغال التي تمثل مجموعة من الظروف المناخية. باستخدام 12 علامة للأقمار الصناعية الصغيرة، قمنا بتقييم 132 نوعًا على طول هذا التدرج. كما تم الحصول على بيانات النمط الظاهري من التجارب الميدانية التي أجريت في ثلاثة مواسم. وجد أن التنوع الوراثي في غرب إفريقيا أقل بنسبة 18 ٪ منه في أمريكا. ينقسم التنوع الوراثي في غرب أفريقيا إلى خمس مجموعات، حيث توجد بعض المجموعات في مناطق مناخية محددة للغاية، على سبيل المثال في ظل مناخ استوائي رطب، أو في ظل مناخ الساحل. لاحظنا أيضًا المجموعات الوراثية التي تحدث في مجموعة واسعة من المناخات. ارتبطت المجموعات الوراثية أيضًا بالتمايز المورفولوجي، بشكل أساسي شكل الأوراق ولون الجذع أو الجذر. يمكن استخدام هذا الهيكل الخاص للتنوع على طول التدرج المناخي مع الارتباط بالتغير الظاهري لاستراتيجيات الحفظ. إذا ثبت أن هذا الهيكل مرتبط بتكيف مناخي محدد، فسيسمح أيضًا بتطوير استراتيجيات لتكييف الزراعة مع التقلبات المناخية المستمرة في غرب إفريقيا.
CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1371/journal.pone.0177697&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 29 citations 29 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1371/journal.pone.0177697&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2017 FrancePublisher:Public Library of Science (PLoS) Glato Kodjo; Atsou Aïdam; Ndjido Ardo Kane; Diallo Bassirou; Marie Couderc; Leïla Zekraoui; Nora Scarcelli; Adéline Barnaud; Yves Vigouroux;pmid: 28552989
pmc: PMC5446114
L'agriculture subsaharienne a été identifiée comme vulnérable au changement climatique en cours. L'adaptation de l'agriculture a été suggérée comme un moyen de maintenir la productivité. Une meilleure connaissance de la diversité intra-spécifique des variétés est une condition préalable à la bonne gestion de cette adaptation. Parmi les cultures, les racines et les tubercules jouent un rôle important dans la sécurité alimentaire et la croissance économique des populations les plus vulnérables d'Afrique. Ici, nous nous concentrons sur la patate douce. La patate douce (Ipomoea batatas) a été domestiquée en Amérique centrale et en Amérique du Sud et a ensuite été introduite en Afrique et est maintenant cultivée dans toute l'Afrique tropicale. Nous avons évalué sa diversité en Afrique de l'Ouest en échantillonnant une région s'étendant de la zone côtière du Togo à la région septentrionale sahélienne du Sénégal qui représente une gamme de conditions climatiques. À l'aide de 12 marqueurs microsatellites, nous avons évalué 132 variétés le long de ce gradient. Des données phénotypiques issues d'essais sur le terrain menés en trois saisons ont également été obtenues. La diversité génétique en Afrique de l'Ouest s'est avérée inférieure de 18 % à celle des États-Unis. La diversité génétique en Afrique de l'Ouest est structurée en cinq groupes, certains groupes se trouvant dans des zones climatiques très spécifiques, par exemple sous un climat tropical humide ou sous un climat sahélien. Nous avons également observé des groupes génétiques qui se produisent dans un plus large éventail de climats. Les groupes génétiques ont également été associés à la différenciation morphologique, principalement la forme des feuilles et la couleur de la tige ou de la racine. Cette structure particulière de la diversité le long d'un gradient climatique avec association à la variabilité phénotypique peut être utilisée pour des stratégies de conservation. S'il s'avère qu'une telle structure est associée à une adaptation climatique spécifique, elle permettra également de développer des stratégies pour adapter l'agriculture aux variations climatiques en cours en Afrique de l'Ouest. La agricultura subsahariana ha sido identificada como vulnerable al cambio climático en curso. Se ha sugerido la adaptación de la agricultura como una forma de mantener la productividad. Un mejor conocimiento de la diversidad intraespecífica de variedades es un requisito previo para el manejo exitoso de dicha adaptación. Entre los cultivos, la raíz y los tubérculos desempeñan un papel importante en la seguridad alimentaria y el crecimiento económico de las poblaciones más vulnerables de África. Aquí, nos centramos en la batata. La batata (Ipomoea batatas) se domesticó en América Central y del Sur y más tarde se introdujo en África y ahora se cultiva en toda el África tropical. Evaluamos su diversidad en África Occidental mediante el muestreo de una región que se extiende desde la zona costera de Togo hasta la región septentrional del Sahel en Senegal y que representa una variedad de condiciones climáticas. Utilizando 12 marcadores de microsatélites, evaluamos 132 variedades a lo largo de este gradiente. También se obtuvieron datos fenotípicos de ensayos de campo realizados en tres temporadas. Se encontró que la diversidad genética en África Occidental era un 18% menor que en América. La diversidad genética en África Occidental se estructura en cinco grupos, y algunos grupos se encuentran en áreas climáticas muy específicas, por ejemplo, en un clima tropical húmedo o en un clima saheliano. También observamos grupos genéticos que se producen en una gama más amplia de climas. Los grupos genéticos también se asociaron con la diferenciación morfológica, principalmente la forma de las hojas y el color del tallo o raíz. Esta estructura particular de diversidad a lo largo de un gradiente climático con asociación a la variabilidad fenotípica se puede utilizar para estrategias de conservación. Si se demuestra que dicha estructura está asociada con una adaptación climática específica, también permitirá desarrollar estrategias para adaptar la agricultura a la variación climática en curso en África Occidental. Sub-Saharan agriculture has been identified as vulnerable to ongoing climate change. Adaptation of agriculture has been suggested as a way to maintain productivity. Better knowledge of intra-specific diversity of varieties is prerequisites for the successful management of such adaptation. Among crops, root and tubers play important roles in food security and economic growth for the most vulnerable populations in Africa. Here, we focus on the sweet potato. The Sweet potato (Ipomoea batatas) was domesticated in Central and South America and was later introduced into Africa and is now cultivated throughout tropical Africa. We evaluated its diversity in West Africa by sampling a region extending from the coastal area of Togo to the northern Sahelian region of Senegal that represents a range of climatic conditions. Using 12 microsatellite markers, we evaluated 132 varieties along this gradient. Phenotypic data from field trials conducted in three seasons was also obtained. Genetic diversity in West Africa was found to be 18% lower than in America. Genetic diversity in West Africa is structured into five groups, with some groups found in very specific climatic areas, e.g. under a tropical humid climate, or under a Sahelian climate. We also observed genetic groups that occur in a wider range of climates. The genetic groups were also associated with morphological differentiation, mainly the shape of the leaves and the color of the stem or root. This particular structure of diversity along a climatic gradient with association to phenotypic variability can be used for conservation strategies. If such structure is proved to be associated with specific climatic adaptation, it will also allow developing strategies to adapt agriculture to ongoing climate variation in West Africa. تم تحديد الزراعة في جنوب الصحراء على أنها عرضة لتغير المناخ المستمر. تم اقتراح تكييف الزراعة كوسيلة للحفاظ على الإنتاجية. إن المعرفة الأفضل بتنوع الأصناف داخل الأنواع هو شرط أساسي للإدارة الناجحة لهذا التكيف. من بين المحاصيل، تلعب الجذور والدرنات أدوارًا مهمة في الأمن الغذائي والنمو الاقتصادي للفئات السكانية الأكثر ضعفًا في أفريقيا. هنا، نركز على البطاطا الحلوة. تم تدجين البطاطا الحلوة (إيبومويا باتاتاس) في أمريكا الوسطى والجنوبية وتم إدخالها لاحقًا إلى إفريقيا ويتم زراعتها الآن في جميع أنحاء إفريقيا الاستوائية. قمنا بتقييم تنوعها في غرب إفريقيا من خلال أخذ عينات من منطقة تمتد من المنطقة الساحلية لتوغو إلى منطقة الساحل الشمالي للسنغال التي تمثل مجموعة من الظروف المناخية. باستخدام 12 علامة للأقمار الصناعية الصغيرة، قمنا بتقييم 132 نوعًا على طول هذا التدرج. كما تم الحصول على بيانات النمط الظاهري من التجارب الميدانية التي أجريت في ثلاثة مواسم. وجد أن التنوع الوراثي في غرب إفريقيا أقل بنسبة 18 ٪ منه في أمريكا. ينقسم التنوع الوراثي في غرب أفريقيا إلى خمس مجموعات، حيث توجد بعض المجموعات في مناطق مناخية محددة للغاية، على سبيل المثال في ظل مناخ استوائي رطب، أو في ظل مناخ الساحل. لاحظنا أيضًا المجموعات الوراثية التي تحدث في مجموعة واسعة من المناخات. ارتبطت المجموعات الوراثية أيضًا بالتمايز المورفولوجي، بشكل أساسي شكل الأوراق ولون الجذع أو الجذر. يمكن استخدام هذا الهيكل الخاص للتنوع على طول التدرج المناخي مع الارتباط بالتغير الظاهري لاستراتيجيات الحفظ. إذا ثبت أن هذا الهيكل مرتبط بتكيف مناخي محدد، فسيسمح أيضًا بتطوير استراتيجيات لتكييف الزراعة مع التقلبات المناخية المستمرة في غرب إفريقيا.
CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1371/journal.pone.0177697&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 29 citations 29 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1371/journal.pone.0177697&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023Publisher:MDPI AG Authors: Chongwei Xin; Fuxing Jiang; Changzhi Zhai; Yan Chen;doi: 10.3390/su15097361
Previously conducted studies have established that mining activities can activate faults, which will cause floor water inrush disasters and cause loss of personnel and property. In order to reduce the possibility of water inrush disasters in mining, it is particularly important to study the dynamic characteristics and rules of floor fault activation under the influence of mining. In this work, firstly, a microseismic monitoring system was established in the working face to analyze the changes of microseismic indexes before and after grouting. It was found that grouting can enhance the strength of a rock mass and play a role in sealing the water channel. Secondly, the quadratic kernel function of microseismic event energy was established. It was found that the accumulation degree of microseismic events and the region of high energy kernel density increased with the decrease of the distance between the working face and the left boundary of the “analysis region”. Combined with a microseismic event index and water inflow, the activation process of the floor fault was divided into five stages. Finally, the plastic failure region of surrounding rock under different excavation steps was analyzed by numerical simulation, and the characteristics of fault activation were further explained. A method of taking measures to prevent water inrush in the “sign stage of fault activation” was proposed.
Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!
more_vert Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023Publisher:MDPI AG Authors: Chongwei Xin; Fuxing Jiang; Changzhi Zhai; Yan Chen;doi: 10.3390/su15097361
Previously conducted studies have established that mining activities can activate faults, which will cause floor water inrush disasters and cause loss of personnel and property. In order to reduce the possibility of water inrush disasters in mining, it is particularly important to study the dynamic characteristics and rules of floor fault activation under the influence of mining. In this work, firstly, a microseismic monitoring system was established in the working face to analyze the changes of microseismic indexes before and after grouting. It was found that grouting can enhance the strength of a rock mass and play a role in sealing the water channel. Secondly, the quadratic kernel function of microseismic event energy was established. It was found that the accumulation degree of microseismic events and the region of high energy kernel density increased with the decrease of the distance between the working face and the left boundary of the “analysis region”. Combined with a microseismic event index and water inflow, the activation process of the floor fault was divided into five stages. Finally, the plastic failure region of surrounding rock under different excavation steps was analyzed by numerical simulation, and the characteristics of fault activation were further explained. A method of taking measures to prevent water inrush in the “sign stage of fault activation” was proposed.
Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!
more_vert Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2019 FrancePublisher:Elsevier BV Authors: Jacotot, Adrien; Marchand, Cyril; Allenbach, Michel;pmid: 30308791
Seasonal variations of CO2 and CH4 fluxes were investigated in a Rhizophora mangrove forest that develops under a semi-arid climate, in New Caledonia. Fluxes were measured using closed incubation chambers connected to a CRDS analyzer. They were performed during low tide at light, in the dark, and in the dark after having removed the top 1-2 mm of soil, which may contain biofilm. CO2 and CH4 fluxes ranged from 31.34 to 187.48 mmol m-2 day-1 and from 39.36 to 428.09 μmol m-2 day-1, respectively. Both CO2 and CH4 emissions showed a strong seasonal variability with higher fluxes measured during the warm season, due to an enhanced production of these two gases within the soil. Furthermore, CO2 fluxes were higher in the dark than at light, evidencing photosynthetic processes at the soil surface and thus the role of biofilm in the regulation of greenhouse gas emissions from mangrove soils. The mean δ13C-CO2 value of the CO2 fluxes measured was -19.76 ± 1.19‰, which was depleted compared to the one emitted by root respiration (-22.32 ± 1.06‰), leaf litter decomposition (-21.43 ± 1.89‰) and organic matter degradation (-22.33 ± 1.82‰). This result confirmed the use of the CO2 produced within the soil by the biofilm developing at its surface. After removing the top 1-2 mm of soil, both CO2 and CH4 fluxes increased. Enhancement of CH4 fluxes suggests that biofilm may act as a physical barrier to the transfer of GHG from the soil to the atmosphere. However, the δ13C-CO2 became more enriched, evidencing that the biofilm was not integrally removed, and that its partial removal resulted in physical disturbance that stimulated CO2 production. Therefore, this study provides useful information to understand the global implication of mangroves in climate change mitigation.
Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 37 citations 37 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2019 FrancePublisher:Elsevier BV Authors: Jacotot, Adrien; Marchand, Cyril; Allenbach, Michel;pmid: 30308791
Seasonal variations of CO2 and CH4 fluxes were investigated in a Rhizophora mangrove forest that develops under a semi-arid climate, in New Caledonia. Fluxes were measured using closed incubation chambers connected to a CRDS analyzer. They were performed during low tide at light, in the dark, and in the dark after having removed the top 1-2 mm of soil, which may contain biofilm. CO2 and CH4 fluxes ranged from 31.34 to 187.48 mmol m-2 day-1 and from 39.36 to 428.09 μmol m-2 day-1, respectively. Both CO2 and CH4 emissions showed a strong seasonal variability with higher fluxes measured during the warm season, due to an enhanced production of these two gases within the soil. Furthermore, CO2 fluxes were higher in the dark than at light, evidencing photosynthetic processes at the soil surface and thus the role of biofilm in the regulation of greenhouse gas emissions from mangrove soils. The mean δ13C-CO2 value of the CO2 fluxes measured was -19.76 ± 1.19‰, which was depleted compared to the one emitted by root respiration (-22.32 ± 1.06‰), leaf litter decomposition (-21.43 ± 1.89‰) and organic matter degradation (-22.33 ± 1.82‰). This result confirmed the use of the CO2 produced within the soil by the biofilm developing at its surface. After removing the top 1-2 mm of soil, both CO2 and CH4 fluxes increased. Enhancement of CH4 fluxes suggests that biofilm may act as a physical barrier to the transfer of GHG from the soil to the atmosphere. However, the δ13C-CO2 became more enriched, evidencing that the biofilm was not integrally removed, and that its partial removal resulted in physical disturbance that stimulated CO2 production. Therefore, this study provides useful information to understand the global implication of mangroves in climate change mitigation.
Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 37 citations 37 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Hindawi Limited A. Emmanuel Lawin; Brice Sinsin; Clément Ahouannou; Julien Adounkpe; Rufin Offin Lié Akiyo;doi: 10.1155/2013/480137
As a result of the global warming, the atmospheric temperature in sub-Saharan regions of Africa may drastically increase, thus worsening the poor living conditions already experienced by people in those regions. Roof’s thermal insulation capacity may play key role in reducing indoor thermal comfort cost. In the present study, effort is put to model heat transfer through roofs in south Saharan regions. Validation of the model was achieved using the slightly sloppy galvanized aluminum-iron sheet roof. Atmospheric data were hourly measured during April and June in Ouagadougou, Burkina Faso. Solar energy values increase from 24.50±0.50 W/m2 in the morning to a maximum of 900.1±0.8 W/m2 in the early afternoon. Ambient temperature follows the same trend as solar radiation with a maximum at 40.0±0.2°C. Wind speed varies from 0.5 to 4.0±0.1 m/s. The measured roof inner wall temperatures agreed excellently with the developed model with a Nash-Sutcliffe Coefficient of Efficiency of 0.988. Energy flux entering the room through the roof varies from 63.1±0.3 W/m2 earlier in the morning to a maximum of 115.3±0.5 W/m2 in the earlier afternoon. These results shall help to better design human habitat under changing climate conditions in the sub-Saharan regions.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Hindawi Limited A. Emmanuel Lawin; Brice Sinsin; Clément Ahouannou; Julien Adounkpe; Rufin Offin Lié Akiyo;doi: 10.1155/2013/480137
As a result of the global warming, the atmospheric temperature in sub-Saharan regions of Africa may drastically increase, thus worsening the poor living conditions already experienced by people in those regions. Roof’s thermal insulation capacity may play key role in reducing indoor thermal comfort cost. In the present study, effort is put to model heat transfer through roofs in south Saharan regions. Validation of the model was achieved using the slightly sloppy galvanized aluminum-iron sheet roof. Atmospheric data were hourly measured during April and June in Ouagadougou, Burkina Faso. Solar energy values increase from 24.50±0.50 W/m2 in the morning to a maximum of 900.1±0.8 W/m2 in the early afternoon. Ambient temperature follows the same trend as solar radiation with a maximum at 40.0±0.2°C. Wind speed varies from 0.5 to 4.0±0.1 m/s. The measured roof inner wall temperatures agreed excellently with the developed model with a Nash-Sutcliffe Coefficient of Efficiency of 0.988. Energy flux entering the room through the roof varies from 63.1±0.3 W/m2 earlier in the morning to a maximum of 115.3±0.5 W/m2 in the earlier afternoon. These results shall help to better design human habitat under changing climate conditions in the sub-Saharan regions.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2003 FrancePublisher:Elsevier BV Authors: Calderon, M.; Loiseau, Gérard; Guyot, Jean-Pierre;pmid: 12381402
Glucose, fructose, sucrose and starch are naturally present in cereals. Fermentation of different combinations of these carbohydrates by Lactobacillus fermentum Ogi E1, a sourdough heterofermentative lactobacillus, was investigated to determine effects on fermentation kinetics, growth energetics and alpha-amylase production. Irrespective of the substrate combination, the strain was able to simultaneously produce alpha-amylase and consume starch, glucose, fructose and sucrose. In mixtures of starch with either sucrose or fructose or with both fructose and glucose, yields of alpha-amylase from biomass (Y(amy/x)) were similar to those observed for starch. However, for starch and glucose or starch, glucose, fructose and sucrose mixtures, both Y(amy/x) and the specific rate of alpha-amylase production decreased markedly. In fructose- or sucrose-containing mixtures, mannitol was formed stoichiometrically indicating that fructose served as electron acceptor, and acetate was produced at constant yield from biomass (Y(ac/x)) (1 g acetate g biomass(-1)). Acetate production was expected to confer to the strain a competitive advantage during natural fermentation by improving biomass formation and growth through an increase in the ATP gain. Y(ATP) varied depending on the carbohydrate mixture, indicating different effects of substrate mixtures on the efficiency in ATP coupling to biomass formation. Compared to starch fermentation, the highest value of Y(ATP) (29 g biomass mol ATP(-1)) was estimated for the starch/fructose mixture but no increase in mu(max) was observed. The lowest value (16 g biomass mol ATP(-1)) was obtained for the starch, glucose and fructose mixture, whereas for the mixture of all carbohydrates, Y(ATP) was similar to that obtained with starch alone (20 g biomass mol ATP(-1)) and it was intermediary for the starch and sucrose mixture (17 g biomass mol ATP(-1)). It is concluded that competitiveness of the strain cannot be based on expected energy gain in mixed substrate fermentation involving fructose and sucrose with glucose and starch, but rather on its ability to simultaneously use carbohydrates while producing alpha-amylase and to produce acetic acid. Acetic acid production could enhance the strain capacity to inhibit nonacid-tolerant, competitive microflora at the earlier stage of natural fermentation.
International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu34 citations 34 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2003 FrancePublisher:Elsevier BV Authors: Calderon, M.; Loiseau, Gérard; Guyot, Jean-Pierre;pmid: 12381402
Glucose, fructose, sucrose and starch are naturally present in cereals. Fermentation of different combinations of these carbohydrates by Lactobacillus fermentum Ogi E1, a sourdough heterofermentative lactobacillus, was investigated to determine effects on fermentation kinetics, growth energetics and alpha-amylase production. Irrespective of the substrate combination, the strain was able to simultaneously produce alpha-amylase and consume starch, glucose, fructose and sucrose. In mixtures of starch with either sucrose or fructose or with both fructose and glucose, yields of alpha-amylase from biomass (Y(amy/x)) were similar to those observed for starch. However, for starch and glucose or starch, glucose, fructose and sucrose mixtures, both Y(amy/x) and the specific rate of alpha-amylase production decreased markedly. In fructose- or sucrose-containing mixtures, mannitol was formed stoichiometrically indicating that fructose served as electron acceptor, and acetate was produced at constant yield from biomass (Y(ac/x)) (1 g acetate g biomass(-1)). Acetate production was expected to confer to the strain a competitive advantage during natural fermentation by improving biomass formation and growth through an increase in the ATP gain. Y(ATP) varied depending on the carbohydrate mixture, indicating different effects of substrate mixtures on the efficiency in ATP coupling to biomass formation. Compared to starch fermentation, the highest value of Y(ATP) (29 g biomass mol ATP(-1)) was estimated for the starch/fructose mixture but no increase in mu(max) was observed. The lowest value (16 g biomass mol ATP(-1)) was obtained for the starch, glucose and fructose mixture, whereas for the mixture of all carbohydrates, Y(ATP) was similar to that obtained with starch alone (20 g biomass mol ATP(-1)) and it was intermediary for the starch and sucrose mixture (17 g biomass mol ATP(-1)). It is concluded that competitiveness of the strain cannot be based on expected energy gain in mixed substrate fermentation involving fructose and sucrose with glucose and starch, but rather on its ability to simultaneously use carbohydrates while producing alpha-amylase and to produce acetic acid. Acetic acid production could enhance the strain capacity to inhibit nonacid-tolerant, competitive microflora at the earlier stage of natural fermentation.
International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu34 citations 34 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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description Publicationkeyboard_double_arrow_right Article , Conference object , Data Paper 2021 Italy, Italy, New Zealand, France, Italy, ItalyPublisher:MDPI AG Funded by:EC | IceCommunitiesEC| IceCommunitiesSilvio Marta; Roberto Sergio Azzoni; Davide Fugazza; Levan Tielidze; Pritam Chand; Katrin Sieron; Peter Almond; Roberto Ambrosini; Fabien Anthelme; Pablo Alviz Gazitúa; Rakesh Bhambri; Aurélie Bonin; Marco Caccianiga; Sophie Cauvy-Fraunié; Jorge Luis Ceballos Lievano; John Clague; Justiniano Alejo Cochachín Rapre; Olivier Dangles; Philip Deline; Andre Eger; Rolando Cruz Encarnación; Sergey Erokhin; Andrea Franzetti; Ludovic Gielly; Fabrizio Gili; Mauro Gobbi; Alessia Guerrieri; Sigmund Hågvar; Norine Khedim; Rahab Kinyanjui; Erwan Messager; Marco Aurelio Morales-Martínez; Gwendolyn Peyre; Francesca Pittino; Jerome Poulenard; Roberto Seppi; Milap Chand Sharma; Nurai Urseitova; Blake Weissling; Yan Yang; Vitalii Zaginaev; Anaïs Zimmer; Guglielmina Adele Diolaiuti; Antoine Rabatel; Gentile Francesco Ficetola;doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
Most of the world’s mountain glaciers have been retreating for more than a century in response to climate change. Glacier retreat is evident on all continents, and the rate of retreat has accelerated during recent decades. Accurate, spatially explicit information on the position of glacier margins over time is useful for analyzing patterns of glacier retreat and measuring reductions in glacier surface area. This information is also essential for evaluating how mountain ecosystems are evolving due to climate warming and the attendant glacier retreat. Here, we present a non-comprehensive spatially explicit dataset showing multiple positions of glacier fronts since the Little Ice Age (LIA) maxima, including many data from the pre-satellite era. The dataset is based on multiple historical archival records including topographical maps; repeated photographs, paintings, and aerial or satellite images with a supplement of geochronology; and own field data. We provide ESRI shapefiles showing 728 past positions of 94 glacier fronts from all continents, except Antarctica, covering the period between the Little Ice Age maxima and the present. On average, the time series span the past 190 years. From 2 to 46 past positions per glacier are depicted (on average: 7.8).
Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Data Paper 2021 Italy, Italy, New Zealand, France, Italy, ItalyPublisher:MDPI AG Funded by:EC | IceCommunitiesEC| IceCommunitiesSilvio Marta; Roberto Sergio Azzoni; Davide Fugazza; Levan Tielidze; Pritam Chand; Katrin Sieron; Peter Almond; Roberto Ambrosini; Fabien Anthelme; Pablo Alviz Gazitúa; Rakesh Bhambri; Aurélie Bonin; Marco Caccianiga; Sophie Cauvy-Fraunié; Jorge Luis Ceballos Lievano; John Clague; Justiniano Alejo Cochachín Rapre; Olivier Dangles; Philip Deline; Andre Eger; Rolando Cruz Encarnación; Sergey Erokhin; Andrea Franzetti; Ludovic Gielly; Fabrizio Gili; Mauro Gobbi; Alessia Guerrieri; Sigmund Hågvar; Norine Khedim; Rahab Kinyanjui; Erwan Messager; Marco Aurelio Morales-Martínez; Gwendolyn Peyre; Francesca Pittino; Jerome Poulenard; Roberto Seppi; Milap Chand Sharma; Nurai Urseitova; Blake Weissling; Yan Yang; Vitalii Zaginaev; Anaïs Zimmer; Guglielmina Adele Diolaiuti; Antoine Rabatel; Gentile Francesco Ficetola;doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
doi: 10.3390/data6100107
handle: 2434/890495 , 10281/396892 , 2318/1880490 , 11571/1446474 , 10182/14353
Most of the world’s mountain glaciers have been retreating for more than a century in response to climate change. Glacier retreat is evident on all continents, and the rate of retreat has accelerated during recent decades. Accurate, spatially explicit information on the position of glacier margins over time is useful for analyzing patterns of glacier retreat and measuring reductions in glacier surface area. This information is also essential for evaluating how mountain ecosystems are evolving due to climate warming and the attendant glacier retreat. Here, we present a non-comprehensive spatially explicit dataset showing multiple positions of glacier fronts since the Little Ice Age (LIA) maxima, including many data from the pre-satellite era. The dataset is based on multiple historical archival records including topographical maps; repeated photographs, paintings, and aerial or satellite images with a supplement of geochronology; and own field data. We provide ESRI shapefiles showing 728 past positions of 94 glacier fronts from all continents, except Antarctica, covering the period between the Little Ice Age maxima and the present. On average, the time series span the past 190 years. From 2 to 46 past positions per glacier are depicted (on average: 7.8).
Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Archivio Istituziona... arrow_drop_down DataArticleLicense: CC BYFull-Text: https://www.mdpi.com/2306-5729/6/10/107/pdfData sources: SygmaCIRAD: HAL (Agricultural Research for Development)Article . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Lincoln University (New Zealand): Lincoln U Research ArchiveArticle . 2021License: CC BYFull-Text: https://doi.org/10.3390/data6100107Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://hal.inrae.fr/hal-03377264Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)IRIS UNIPV (Università degli studi di Pavia)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/data6100107&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2011 FrancePublisher:OpenEdition Authors: David, Gilbert;handle: 20.500.13089/lqg1
Le présent article pose comme hypothèse principale qu’il existe une spécificité insulaire en matière de changement climatique, tant dans le domaine géopolitique que dans le domaine économique. A la différence des pays continentaux, le changement climatique est un facteur de structuration des États insulaires. Créée en 1990, 2 ans après que le GIEC commence ses travaux, l’Alliance des Petits États insulaires (AOSIS) s’est beaucoup investie dans la ratification du Protocole de Kyoto. Ces derniers se considèrent en effet comme les premières et principales victimes du changement climatique dont le coût pour leurs économies sera nettement plus élevé que celui supporté par les pays continentaux. Aux coûts directs, résultant de l’aléa naturel, notamment la montée du niveau de la mer et l’érosion du littoral qui lui est associée, se surimposeront des coûts induits par les mesures prises au niveau international pour lutter contre le changement climatique. Ces mesures conduisent à remettre la distance géographique au cœur de la logique de localisation des entreprises. La limitation des déplacements aériens et maritimes au long cours qui en résultera devrait entraîner une réduction de la demande mondiale pour les produits et services touristiques insulaires, suivie d’une concurrence exacerbée entre les îles pour attirer cette demande réduite. On assistera alors à la marginalisation des économies insulaires ne pouvant se positionner sur des marchés de niche aux échelles mondiales et régionales avec pour principaux corollaires l’exode rural et la migration internationale. Les recompositions économiques et territoriales qui s’annoncent sont des processus durables qui s’inscrivent dans le temps long. En revanche, le sommet de Copenhague a montré que la structuration politique des États insulaires sur la scène internationale est un processus fragile. L’AOSIS est sortie éclatée de ce sommet. L’avenir des îles est définitivement sous contrainte du changement climatique et il s’annonce bien sombre.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2011 FrancePublisher:OpenEdition Authors: David, Gilbert;handle: 20.500.13089/lqg1
Le présent article pose comme hypothèse principale qu’il existe une spécificité insulaire en matière de changement climatique, tant dans le domaine géopolitique que dans le domaine économique. A la différence des pays continentaux, le changement climatique est un facteur de structuration des États insulaires. Créée en 1990, 2 ans après que le GIEC commence ses travaux, l’Alliance des Petits États insulaires (AOSIS) s’est beaucoup investie dans la ratification du Protocole de Kyoto. Ces derniers se considèrent en effet comme les premières et principales victimes du changement climatique dont le coût pour leurs économies sera nettement plus élevé que celui supporté par les pays continentaux. Aux coûts directs, résultant de l’aléa naturel, notamment la montée du niveau de la mer et l’érosion du littoral qui lui est associée, se surimposeront des coûts induits par les mesures prises au niveau international pour lutter contre le changement climatique. Ces mesures conduisent à remettre la distance géographique au cœur de la logique de localisation des entreprises. La limitation des déplacements aériens et maritimes au long cours qui en résultera devrait entraîner une réduction de la demande mondiale pour les produits et services touristiques insulaires, suivie d’une concurrence exacerbée entre les îles pour attirer cette demande réduite. On assistera alors à la marginalisation des économies insulaires ne pouvant se positionner sur des marchés de niche aux échelles mondiales et régionales avec pour principaux corollaires l’exode rural et la migration internationale. Les recompositions économiques et territoriales qui s’annoncent sont des processus durables qui s’inscrivent dans le temps long. En revanche, le sommet de Copenhague a montré que la structuration politique des États insulaires sur la scène internationale est un processus fragile. L’AOSIS est sortie éclatée de ce sommet. L’avenir des îles est définitivement sous contrainte du changement climatique et il s’annonce bien sombre.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4000/vertigo.10530&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 FrancePublisher:Schweizerbart Weinberg, J.; Ota, N.; Goergen, Georg; Fagbohoun, J.R.; Tepa-Yotto, G.; Kriticos, D.J.;handle: 10568/126592
Spodoptera eridania (Stoll), a polyphagous lepidopteran pest from the Americas, has recently invaded western and central Africa. Like its congeners, S. eridania has developed pesticide resistance. The rapid global spread and impacts of Spodoptera frugiperda (J.E. Smith) has raised concerns about whether S. eridania is set to do the same. Here we fit a CLIMEX niche model for S. eridania and apply a climate change scenario for 2050 to investigate the sensitivity of the pest threat. We find that S. eridania can potentially expand its range throughout the tropics and into the sub-tropics, threatening a range of important commercial and subsistence crops. An important feature of the pest threat posed by S. eridania is the extent of its ephemeral habitat during warmer months. Modelled climatic changes will mostly expand this species potential range poleward by around 200 km by 2050, indicating a moderate sensitivity. These areas of emerging potential expansion are mostly into subtropical climates, supporting diverse cropping systems, including at risk crops beans, groundnut, potato, soybeans, tomato and sweet potato. The potential distribution of S. eridania in the Amazon basin and the southern boundary of the Sahara Desert appear set to contract substantially due to increasing heat stress. While it may not be as invasive as some of its congeners, nor acquire pesticide resistance as readily, S. eridania does have some of these traits, and the current and emerging pest threat posed by this moth deserves closer attention, especially in relation to intercontinental phytosanitary measures to slow its spread.
CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 FrancePublisher:Schweizerbart Weinberg, J.; Ota, N.; Goergen, Georg; Fagbohoun, J.R.; Tepa-Yotto, G.; Kriticos, D.J.;handle: 10568/126592
Spodoptera eridania (Stoll), a polyphagous lepidopteran pest from the Americas, has recently invaded western and central Africa. Like its congeners, S. eridania has developed pesticide resistance. The rapid global spread and impacts of Spodoptera frugiperda (J.E. Smith) has raised concerns about whether S. eridania is set to do the same. Here we fit a CLIMEX niche model for S. eridania and apply a climate change scenario for 2050 to investigate the sensitivity of the pest threat. We find that S. eridania can potentially expand its range throughout the tropics and into the sub-tropics, threatening a range of important commercial and subsistence crops. An important feature of the pest threat posed by S. eridania is the extent of its ephemeral habitat during warmer months. Modelled climatic changes will mostly expand this species potential range poleward by around 200 km by 2050, indicating a moderate sensitivity. These areas of emerging potential expansion are mostly into subtropical climates, supporting diverse cropping systems, including at risk crops beans, groundnut, potato, soybeans, tomato and sweet potato. The potential distribution of S. eridania in the Amazon basin and the southern boundary of the Sahara Desert appear set to contract substantially due to increasing heat stress. While it may not be as invasive as some of its congeners, nor acquire pesticide resistance as readily, S. eridania does have some of these traits, and the current and emerging pest threat posed by this moth deserves closer attention, especially in relation to intercontinental phytosanitary measures to slow its spread.
CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert CGIAR CGSpace (Consu... arrow_drop_down CGIAR CGSpace (Consultative Group on International Agricultural Research)Article . 2023License: CC BYFull-Text: https://hdl.handle.net/10568/126592Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1127/entomologia/2022/1397&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2020 India, Australia, France, IndiaPublisher:Elsevier BV Sunita Choudhary; Sunita Choudhary; Charlie Messina; Vincent Vadez; Vincent Vadez; Anirban Guha; Jana Kholova; Mark E. Cooper; Anand Pandravada;pmid: 32534623
This study compared maize, sorghum and pearl-millet, leading C4 cereals, for the transpiration rate (TR) response to increasing atmospheric and soil water stress. The TR response to transiently increasing VPD (0.9-4.1 kPa) and the transpiration and leaf area expansion response to progressive soil drying were measured in controlled conditions at early vegetative stage in 10-16 genotypes of each species grown in moderate or high vapor pressure deficit (VPD) conditions. Maize grown under moderate VPD conditions restricted TR under high VPD, but not sorghum and pearl millet. By contrast, when grown under high VPD, all species increased TR upon increasing VPD, suggesting a loss of TR responsiveness. Sorghum and pearl-millet grown under high VPD reduced leaf area, but not maize. Upon progressive soil drying, maize reduced transpiration at higher soil moisture than sorghum and pearl millet, especially under high VPD, and leaf area expansion declined at similar or lower soil moisture than transpiration in maize and sorghum. It is concluded that maize conserves water by restricting transpiration upon increasing VPD and under higher soil moisture than sorghum and millet, giving maize significantly higher TE, whereas sorghum and pearl millet rely mostly on reduced leaf area and somewhat on transpiration restriction.
Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.plantsci.2019.110297&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 50 citations 50 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.plantsci.2019.110297&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2020 India, Australia, France, IndiaPublisher:Elsevier BV Sunita Choudhary; Sunita Choudhary; Charlie Messina; Vincent Vadez; Vincent Vadez; Anirban Guha; Jana Kholova; Mark E. Cooper; Anand Pandravada;pmid: 32534623
This study compared maize, sorghum and pearl-millet, leading C4 cereals, for the transpiration rate (TR) response to increasing atmospheric and soil water stress. The TR response to transiently increasing VPD (0.9-4.1 kPa) and the transpiration and leaf area expansion response to progressive soil drying were measured in controlled conditions at early vegetative stage in 10-16 genotypes of each species grown in moderate or high vapor pressure deficit (VPD) conditions. Maize grown under moderate VPD conditions restricted TR under high VPD, but not sorghum and pearl millet. By contrast, when grown under high VPD, all species increased TR upon increasing VPD, suggesting a loss of TR responsiveness. Sorghum and pearl-millet grown under high VPD reduced leaf area, but not maize. Upon progressive soil drying, maize reduced transpiration at higher soil moisture than sorghum and pearl millet, especially under high VPD, and leaf area expansion declined at similar or lower soil moisture than transpiration in maize and sorghum. It is concluded that maize conserves water by restricting transpiration upon increasing VPD and under higher soil moisture than sorghum and millet, giving maize significantly higher TE, whereas sorghum and pearl millet rely mostly on reduced leaf area and somewhat on transpiration restriction.
Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.plantsci.2019.110297&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 50 citations 50 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Plant Science arrow_drop_down The University of Queensland: UQ eSpaceArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.plantsci.2019.110297&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2013 FrancePublisher:Elsevier BV /Gilles, Sylvain; Fargier, L.; /Lazzaro, Xavier; /Baras, Etienne; De Wilde, N.; Drakides, C.; Amiel, C.; Rispal, B.; Blancheton, J. P.;pmid: 23031842
Integrated Multi-Trophic Aquaculture takes advantage of the mutualism between some detritivorous fish and phytoplankton. The fish recycle nutrients by consuming live (and dead) algae and provide the inorganic carbon to fuel the growth of live algae. In the meanwhile, algae purify the water and generate the oxygen required by fishes. Such mechanism stabilizes the functioning of an artificially recycling ecosystem, as exemplified by combining the euryhaline tilapia Sarotherodon melanotheron heudelotii and the unicellular alga Chlorella sp. Feed addition in this ecosystem results in faster fish growth but also in an increase in phytoplankton biomass, which must be limited. In the prototype described here, the algal population control is exerted by herbivorous zooplankton growing in a separate pond connected in parallel to the fish-algae ecosystem. The zooplankton production is then consumed by tilapia, particularly by the fry and juveniles, when water is returned to the main circuit. Chlorella sp. and Brachionus plicatilis are two planktonic species that have spontaneously colonized the brackish water of the prototype, which was set-up in Senegal along the Atlantic Ocean shoreline. In our system, water was entirely recycled and only evaporation was compensated (1.5% volume/day). Sediment, which accumulated in the zooplankton pond, was the only trophic cul-de-sac. The system was temporarily destabilized following an accidental rotifer invasion in the main circuit. This caused Chlorella disappearance and replacement by opportunist algae, not consumed by Brachionus. Following the entire consumption of the Brachionus population by tilapias, Chlorella predominated again. Our artificial ecosystem combining S. m. heudelotii, Chlorella and B. plicatilis thus appeared to be resilient. This farming system was operated over one year with a fish productivity of 1.85 kg/m2 per year during the cold season (January to April).
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 12 citations 12 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2013 FrancePublisher:Elsevier BV /Gilles, Sylvain; Fargier, L.; /Lazzaro, Xavier; /Baras, Etienne; De Wilde, N.; Drakides, C.; Amiel, C.; Rispal, B.; Blancheton, J. P.;pmid: 23031842
Integrated Multi-Trophic Aquaculture takes advantage of the mutualism between some detritivorous fish and phytoplankton. The fish recycle nutrients by consuming live (and dead) algae and provide the inorganic carbon to fuel the growth of live algae. In the meanwhile, algae purify the water and generate the oxygen required by fishes. Such mechanism stabilizes the functioning of an artificially recycling ecosystem, as exemplified by combining the euryhaline tilapia Sarotherodon melanotheron heudelotii and the unicellular alga Chlorella sp. Feed addition in this ecosystem results in faster fish growth but also in an increase in phytoplankton biomass, which must be limited. In the prototype described here, the algal population control is exerted by herbivorous zooplankton growing in a separate pond connected in parallel to the fish-algae ecosystem. The zooplankton production is then consumed by tilapia, particularly by the fry and juveniles, when water is returned to the main circuit. Chlorella sp. and Brachionus plicatilis are two planktonic species that have spontaneously colonized the brackish water of the prototype, which was set-up in Senegal along the Atlantic Ocean shoreline. In our system, water was entirely recycled and only evaporation was compensated (1.5% volume/day). Sediment, which accumulated in the zooplankton pond, was the only trophic cul-de-sac. The system was temporarily destabilized following an accidental rotifer invasion in the main circuit. This caused Chlorella disappearance and replacement by opportunist algae, not consumed by Brachionus. Following the entire consumption of the Brachionus population by tilapias, Chlorella predominated again. Our artificial ecosystem combining S. m. heudelotii, Chlorella and B. plicatilis thus appeared to be resilient. This farming system was operated over one year with a fish productivity of 1.85 kg/m2 per year during the cold season (January to April).
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 12 citations 12 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2013Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1017/s1751731112001279&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2017 FrancePublisher:Public Library of Science (PLoS) Glato Kodjo; Atsou Aïdam; Ndjido Ardo Kane; Diallo Bassirou; Marie Couderc; Leïla Zekraoui; Nora Scarcelli; Adéline Barnaud; Yves Vigouroux;pmid: 28552989
pmc: PMC5446114
L'agriculture subsaharienne a été identifiée comme vulnérable au changement climatique en cours. L'adaptation de l'agriculture a été suggérée comme un moyen de maintenir la productivité. Une meilleure connaissance de la diversité intra-spécifique des variétés est une condition préalable à la bonne gestion de cette adaptation. Parmi les cultures, les racines et les tubercules jouent un rôle important dans la sécurité alimentaire et la croissance économique des populations les plus vulnérables d'Afrique. Ici, nous nous concentrons sur la patate douce. La patate douce (Ipomoea batatas) a été domestiquée en Amérique centrale et en Amérique du Sud et a ensuite été introduite en Afrique et est maintenant cultivée dans toute l'Afrique tropicale. Nous avons évalué sa diversité en Afrique de l'Ouest en échantillonnant une région s'étendant de la zone côtière du Togo à la région septentrionale sahélienne du Sénégal qui représente une gamme de conditions climatiques. À l'aide de 12 marqueurs microsatellites, nous avons évalué 132 variétés le long de ce gradient. Des données phénotypiques issues d'essais sur le terrain menés en trois saisons ont également été obtenues. La diversité génétique en Afrique de l'Ouest s'est avérée inférieure de 18 % à celle des États-Unis. La diversité génétique en Afrique de l'Ouest est structurée en cinq groupes, certains groupes se trouvant dans des zones climatiques très spécifiques, par exemple sous un climat tropical humide ou sous un climat sahélien. Nous avons également observé des groupes génétiques qui se produisent dans un plus large éventail de climats. Les groupes génétiques ont également été associés à la différenciation morphologique, principalement la forme des feuilles et la couleur de la tige ou de la racine. Cette structure particulière de la diversité le long d'un gradient climatique avec association à la variabilité phénotypique peut être utilisée pour des stratégies de conservation. S'il s'avère qu'une telle structure est associée à une adaptation climatique spécifique, elle permettra également de développer des stratégies pour adapter l'agriculture aux variations climatiques en cours en Afrique de l'Ouest. La agricultura subsahariana ha sido identificada como vulnerable al cambio climático en curso. Se ha sugerido la adaptación de la agricultura como una forma de mantener la productividad. Un mejor conocimiento de la diversidad intraespecífica de variedades es un requisito previo para el manejo exitoso de dicha adaptación. Entre los cultivos, la raíz y los tubérculos desempeñan un papel importante en la seguridad alimentaria y el crecimiento económico de las poblaciones más vulnerables de África. Aquí, nos centramos en la batata. La batata (Ipomoea batatas) se domesticó en América Central y del Sur y más tarde se introdujo en África y ahora se cultiva en toda el África tropical. Evaluamos su diversidad en África Occidental mediante el muestreo de una región que se extiende desde la zona costera de Togo hasta la región septentrional del Sahel en Senegal y que representa una variedad de condiciones climáticas. Utilizando 12 marcadores de microsatélites, evaluamos 132 variedades a lo largo de este gradiente. También se obtuvieron datos fenotípicos de ensayos de campo realizados en tres temporadas. Se encontró que la diversidad genética en África Occidental era un 18% menor que en América. La diversidad genética en África Occidental se estructura en cinco grupos, y algunos grupos se encuentran en áreas climáticas muy específicas, por ejemplo, en un clima tropical húmedo o en un clima saheliano. También observamos grupos genéticos que se producen en una gama más amplia de climas. Los grupos genéticos también se asociaron con la diferenciación morfológica, principalmente la forma de las hojas y el color del tallo o raíz. Esta estructura particular de diversidad a lo largo de un gradiente climático con asociación a la variabilidad fenotípica se puede utilizar para estrategias de conservación. Si se demuestra que dicha estructura está asociada con una adaptación climática específica, también permitirá desarrollar estrategias para adaptar la agricultura a la variación climática en curso en África Occidental. Sub-Saharan agriculture has been identified as vulnerable to ongoing climate change. Adaptation of agriculture has been suggested as a way to maintain productivity. Better knowledge of intra-specific diversity of varieties is prerequisites for the successful management of such adaptation. Among crops, root and tubers play important roles in food security and economic growth for the most vulnerable populations in Africa. Here, we focus on the sweet potato. The Sweet potato (Ipomoea batatas) was domesticated in Central and South America and was later introduced into Africa and is now cultivated throughout tropical Africa. We evaluated its diversity in West Africa by sampling a region extending from the coastal area of Togo to the northern Sahelian region of Senegal that represents a range of climatic conditions. Using 12 microsatellite markers, we evaluated 132 varieties along this gradient. Phenotypic data from field trials conducted in three seasons was also obtained. Genetic diversity in West Africa was found to be 18% lower than in America. Genetic diversity in West Africa is structured into five groups, with some groups found in very specific climatic areas, e.g. under a tropical humid climate, or under a Sahelian climate. We also observed genetic groups that occur in a wider range of climates. The genetic groups were also associated with morphological differentiation, mainly the shape of the leaves and the color of the stem or root. This particular structure of diversity along a climatic gradient with association to phenotypic variability can be used for conservation strategies. If such structure is proved to be associated with specific climatic adaptation, it will also allow developing strategies to adapt agriculture to ongoing climate variation in West Africa. تم تحديد الزراعة في جنوب الصحراء على أنها عرضة لتغير المناخ المستمر. تم اقتراح تكييف الزراعة كوسيلة للحفاظ على الإنتاجية. إن المعرفة الأفضل بتنوع الأصناف داخل الأنواع هو شرط أساسي للإدارة الناجحة لهذا التكيف. من بين المحاصيل، تلعب الجذور والدرنات أدوارًا مهمة في الأمن الغذائي والنمو الاقتصادي للفئات السكانية الأكثر ضعفًا في أفريقيا. هنا، نركز على البطاطا الحلوة. تم تدجين البطاطا الحلوة (إيبومويا باتاتاس) في أمريكا الوسطى والجنوبية وتم إدخالها لاحقًا إلى إفريقيا ويتم زراعتها الآن في جميع أنحاء إفريقيا الاستوائية. قمنا بتقييم تنوعها في غرب إفريقيا من خلال أخذ عينات من منطقة تمتد من المنطقة الساحلية لتوغو إلى منطقة الساحل الشمالي للسنغال التي تمثل مجموعة من الظروف المناخية. باستخدام 12 علامة للأقمار الصناعية الصغيرة، قمنا بتقييم 132 نوعًا على طول هذا التدرج. كما تم الحصول على بيانات النمط الظاهري من التجارب الميدانية التي أجريت في ثلاثة مواسم. وجد أن التنوع الوراثي في غرب إفريقيا أقل بنسبة 18 ٪ منه في أمريكا. ينقسم التنوع الوراثي في غرب أفريقيا إلى خمس مجموعات، حيث توجد بعض المجموعات في مناطق مناخية محددة للغاية، على سبيل المثال في ظل مناخ استوائي رطب، أو في ظل مناخ الساحل. لاحظنا أيضًا المجموعات الوراثية التي تحدث في مجموعة واسعة من المناخات. ارتبطت المجموعات الوراثية أيضًا بالتمايز المورفولوجي، بشكل أساسي شكل الأوراق ولون الجذع أو الجذر. يمكن استخدام هذا الهيكل الخاص للتنوع على طول التدرج المناخي مع الارتباط بالتغير الظاهري لاستراتيجيات الحفظ. إذا ثبت أن هذا الهيكل مرتبط بتكيف مناخي محدد، فسيسمح أيضًا بتطوير استراتيجيات لتكييف الزراعة مع التقلبات المناخية المستمرة في غرب إفريقيا.
CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 29 citations 29 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2017 FrancePublisher:Public Library of Science (PLoS) Glato Kodjo; Atsou Aïdam; Ndjido Ardo Kane; Diallo Bassirou; Marie Couderc; Leïla Zekraoui; Nora Scarcelli; Adéline Barnaud; Yves Vigouroux;pmid: 28552989
pmc: PMC5446114
L'agriculture subsaharienne a été identifiée comme vulnérable au changement climatique en cours. L'adaptation de l'agriculture a été suggérée comme un moyen de maintenir la productivité. Une meilleure connaissance de la diversité intra-spécifique des variétés est une condition préalable à la bonne gestion de cette adaptation. Parmi les cultures, les racines et les tubercules jouent un rôle important dans la sécurité alimentaire et la croissance économique des populations les plus vulnérables d'Afrique. Ici, nous nous concentrons sur la patate douce. La patate douce (Ipomoea batatas) a été domestiquée en Amérique centrale et en Amérique du Sud et a ensuite été introduite en Afrique et est maintenant cultivée dans toute l'Afrique tropicale. Nous avons évalué sa diversité en Afrique de l'Ouest en échantillonnant une région s'étendant de la zone côtière du Togo à la région septentrionale sahélienne du Sénégal qui représente une gamme de conditions climatiques. À l'aide de 12 marqueurs microsatellites, nous avons évalué 132 variétés le long de ce gradient. Des données phénotypiques issues d'essais sur le terrain menés en trois saisons ont également été obtenues. La diversité génétique en Afrique de l'Ouest s'est avérée inférieure de 18 % à celle des États-Unis. La diversité génétique en Afrique de l'Ouest est structurée en cinq groupes, certains groupes se trouvant dans des zones climatiques très spécifiques, par exemple sous un climat tropical humide ou sous un climat sahélien. Nous avons également observé des groupes génétiques qui se produisent dans un plus large éventail de climats. Les groupes génétiques ont également été associés à la différenciation morphologique, principalement la forme des feuilles et la couleur de la tige ou de la racine. Cette structure particulière de la diversité le long d'un gradient climatique avec association à la variabilité phénotypique peut être utilisée pour des stratégies de conservation. S'il s'avère qu'une telle structure est associée à une adaptation climatique spécifique, elle permettra également de développer des stratégies pour adapter l'agriculture aux variations climatiques en cours en Afrique de l'Ouest. La agricultura subsahariana ha sido identificada como vulnerable al cambio climático en curso. Se ha sugerido la adaptación de la agricultura como una forma de mantener la productividad. Un mejor conocimiento de la diversidad intraespecífica de variedades es un requisito previo para el manejo exitoso de dicha adaptación. Entre los cultivos, la raíz y los tubérculos desempeñan un papel importante en la seguridad alimentaria y el crecimiento económico de las poblaciones más vulnerables de África. Aquí, nos centramos en la batata. La batata (Ipomoea batatas) se domesticó en América Central y del Sur y más tarde se introdujo en África y ahora se cultiva en toda el África tropical. Evaluamos su diversidad en África Occidental mediante el muestreo de una región que se extiende desde la zona costera de Togo hasta la región septentrional del Sahel en Senegal y que representa una variedad de condiciones climáticas. Utilizando 12 marcadores de microsatélites, evaluamos 132 variedades a lo largo de este gradiente. También se obtuvieron datos fenotípicos de ensayos de campo realizados en tres temporadas. Se encontró que la diversidad genética en África Occidental era un 18% menor que en América. La diversidad genética en África Occidental se estructura en cinco grupos, y algunos grupos se encuentran en áreas climáticas muy específicas, por ejemplo, en un clima tropical húmedo o en un clima saheliano. También observamos grupos genéticos que se producen en una gama más amplia de climas. Los grupos genéticos también se asociaron con la diferenciación morfológica, principalmente la forma de las hojas y el color del tallo o raíz. Esta estructura particular de diversidad a lo largo de un gradiente climático con asociación a la variabilidad fenotípica se puede utilizar para estrategias de conservación. Si se demuestra que dicha estructura está asociada con una adaptación climática específica, también permitirá desarrollar estrategias para adaptar la agricultura a la variación climática en curso en África Occidental. Sub-Saharan agriculture has been identified as vulnerable to ongoing climate change. Adaptation of agriculture has been suggested as a way to maintain productivity. Better knowledge of intra-specific diversity of varieties is prerequisites for the successful management of such adaptation. Among crops, root and tubers play important roles in food security and economic growth for the most vulnerable populations in Africa. Here, we focus on the sweet potato. The Sweet potato (Ipomoea batatas) was domesticated in Central and South America and was later introduced into Africa and is now cultivated throughout tropical Africa. We evaluated its diversity in West Africa by sampling a region extending from the coastal area of Togo to the northern Sahelian region of Senegal that represents a range of climatic conditions. Using 12 microsatellite markers, we evaluated 132 varieties along this gradient. Phenotypic data from field trials conducted in three seasons was also obtained. Genetic diversity in West Africa was found to be 18% lower than in America. Genetic diversity in West Africa is structured into five groups, with some groups found in very specific climatic areas, e.g. under a tropical humid climate, or under a Sahelian climate. We also observed genetic groups that occur in a wider range of climates. The genetic groups were also associated with morphological differentiation, mainly the shape of the leaves and the color of the stem or root. This particular structure of diversity along a climatic gradient with association to phenotypic variability can be used for conservation strategies. If such structure is proved to be associated with specific climatic adaptation, it will also allow developing strategies to adapt agriculture to ongoing climate variation in West Africa. تم تحديد الزراعة في جنوب الصحراء على أنها عرضة لتغير المناخ المستمر. تم اقتراح تكييف الزراعة كوسيلة للحفاظ على الإنتاجية. إن المعرفة الأفضل بتنوع الأصناف داخل الأنواع هو شرط أساسي للإدارة الناجحة لهذا التكيف. من بين المحاصيل، تلعب الجذور والدرنات أدوارًا مهمة في الأمن الغذائي والنمو الاقتصادي للفئات السكانية الأكثر ضعفًا في أفريقيا. هنا، نركز على البطاطا الحلوة. تم تدجين البطاطا الحلوة (إيبومويا باتاتاس) في أمريكا الوسطى والجنوبية وتم إدخالها لاحقًا إلى إفريقيا ويتم زراعتها الآن في جميع أنحاء إفريقيا الاستوائية. قمنا بتقييم تنوعها في غرب إفريقيا من خلال أخذ عينات من منطقة تمتد من المنطقة الساحلية لتوغو إلى منطقة الساحل الشمالي للسنغال التي تمثل مجموعة من الظروف المناخية. باستخدام 12 علامة للأقمار الصناعية الصغيرة، قمنا بتقييم 132 نوعًا على طول هذا التدرج. كما تم الحصول على بيانات النمط الظاهري من التجارب الميدانية التي أجريت في ثلاثة مواسم. وجد أن التنوع الوراثي في غرب إفريقيا أقل بنسبة 18 ٪ منه في أمريكا. ينقسم التنوع الوراثي في غرب أفريقيا إلى خمس مجموعات، حيث توجد بعض المجموعات في مناطق مناخية محددة للغاية، على سبيل المثال في ظل مناخ استوائي رطب، أو في ظل مناخ الساحل. لاحظنا أيضًا المجموعات الوراثية التي تحدث في مجموعة واسعة من المناخات. ارتبطت المجموعات الوراثية أيضًا بالتمايز المورفولوجي، بشكل أساسي شكل الأوراق ولون الجذع أو الجذر. يمكن استخدام هذا الهيكل الخاص للتنوع على طول التدرج المناخي مع الارتباط بالتغير الظاهري لاستراتيجيات الحفظ. إذا ثبت أن هذا الهيكل مرتبط بتكيف مناخي محدد، فسيسمح أيضًا بتطوير استراتيجيات لتكييف الزراعة مع التقلبات المناخية المستمرة في غرب إفريقيا.
CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1371/journal.pone.0177697&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 29 citations 29 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert CIRAD: HAL (Agricult... arrow_drop_down CIRAD: HAL (Agricultural Research for Development)Article . 2017Full-Text: https://hal.umontpellier.fr/hal-03344108Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023Publisher:MDPI AG Authors: Chongwei Xin; Fuxing Jiang; Changzhi Zhai; Yan Chen;doi: 10.3390/su15097361
Previously conducted studies have established that mining activities can activate faults, which will cause floor water inrush disasters and cause loss of personnel and property. In order to reduce the possibility of water inrush disasters in mining, it is particularly important to study the dynamic characteristics and rules of floor fault activation under the influence of mining. In this work, firstly, a microseismic monitoring system was established in the working face to analyze the changes of microseismic indexes before and after grouting. It was found that grouting can enhance the strength of a rock mass and play a role in sealing the water channel. Secondly, the quadratic kernel function of microseismic event energy was established. It was found that the accumulation degree of microseismic events and the region of high energy kernel density increased with the decrease of the distance between the working face and the left boundary of the “analysis region”. Combined with a microseismic event index and water inflow, the activation process of the floor fault was divided into five stages. Finally, the plastic failure region of surrounding rock under different excavation steps was analyzed by numerical simulation, and the characteristics of fault activation were further explained. A method of taking measures to prevent water inrush in the “sign stage of fault activation” was proposed.
Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!
more_vert Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023Publisher:MDPI AG Authors: Chongwei Xin; Fuxing Jiang; Changzhi Zhai; Yan Chen;doi: 10.3390/su15097361
Previously conducted studies have established that mining activities can activate faults, which will cause floor water inrush disasters and cause loss of personnel and property. In order to reduce the possibility of water inrush disasters in mining, it is particularly important to study the dynamic characteristics and rules of floor fault activation under the influence of mining. In this work, firstly, a microseismic monitoring system was established in the working face to analyze the changes of microseismic indexes before and after grouting. It was found that grouting can enhance the strength of a rock mass and play a role in sealing the water channel. Secondly, the quadratic kernel function of microseismic event energy was established. It was found that the accumulation degree of microseismic events and the region of high energy kernel density increased with the decrease of the distance between the working face and the left boundary of the “analysis region”. Combined with a microseismic event index and water inflow, the activation process of the floor fault was divided into five stages. Finally, the plastic failure region of surrounding rock under different excavation steps was analyzed by numerical simulation, and the characteristics of fault activation were further explained. A method of taking measures to prevent water inrush in the “sign stage of fault activation” was proposed.
Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!
more_vert Sustainability arrow_drop_down SustainabilityOther literature type . 2023License: CC BYFull-Text: http://www.mdpi.com/2071-1050/15/9/7361/pdfData sources: Multidisciplinary Digital Publishing Instituteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/su15097361&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2019 FrancePublisher:Elsevier BV Authors: Jacotot, Adrien; Marchand, Cyril; Allenbach, Michel;pmid: 30308791
Seasonal variations of CO2 and CH4 fluxes were investigated in a Rhizophora mangrove forest that develops under a semi-arid climate, in New Caledonia. Fluxes were measured using closed incubation chambers connected to a CRDS analyzer. They were performed during low tide at light, in the dark, and in the dark after having removed the top 1-2 mm of soil, which may contain biofilm. CO2 and CH4 fluxes ranged from 31.34 to 187.48 mmol m-2 day-1 and from 39.36 to 428.09 μmol m-2 day-1, respectively. Both CO2 and CH4 emissions showed a strong seasonal variability with higher fluxes measured during the warm season, due to an enhanced production of these two gases within the soil. Furthermore, CO2 fluxes were higher in the dark than at light, evidencing photosynthetic processes at the soil surface and thus the role of biofilm in the regulation of greenhouse gas emissions from mangrove soils. The mean δ13C-CO2 value of the CO2 fluxes measured was -19.76 ± 1.19‰, which was depleted compared to the one emitted by root respiration (-22.32 ± 1.06‰), leaf litter decomposition (-21.43 ± 1.89‰) and organic matter degradation (-22.33 ± 1.82‰). This result confirmed the use of the CO2 produced within the soil by the biofilm developing at its surface. After removing the top 1-2 mm of soil, both CO2 and CH4 fluxes increased. Enhancement of CH4 fluxes suggests that biofilm may act as a physical barrier to the transfer of GHG from the soil to the atmosphere. However, the δ13C-CO2 became more enriched, evidencing that the biofilm was not integrally removed, and that its partial removal resulted in physical disturbance that stimulated CO2 production. Therefore, this study provides useful information to understand the global implication of mangroves in climate change mitigation.
Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 37 citations 37 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2019 FrancePublisher:Elsevier BV Authors: Jacotot, Adrien; Marchand, Cyril; Allenbach, Michel;pmid: 30308791
Seasonal variations of CO2 and CH4 fluxes were investigated in a Rhizophora mangrove forest that develops under a semi-arid climate, in New Caledonia. Fluxes were measured using closed incubation chambers connected to a CRDS analyzer. They were performed during low tide at light, in the dark, and in the dark after having removed the top 1-2 mm of soil, which may contain biofilm. CO2 and CH4 fluxes ranged from 31.34 to 187.48 mmol m-2 day-1 and from 39.36 to 428.09 μmol m-2 day-1, respectively. Both CO2 and CH4 emissions showed a strong seasonal variability with higher fluxes measured during the warm season, due to an enhanced production of these two gases within the soil. Furthermore, CO2 fluxes were higher in the dark than at light, evidencing photosynthetic processes at the soil surface and thus the role of biofilm in the regulation of greenhouse gas emissions from mangrove soils. The mean δ13C-CO2 value of the CO2 fluxes measured was -19.76 ± 1.19‰, which was depleted compared to the one emitted by root respiration (-22.32 ± 1.06‰), leaf litter decomposition (-21.43 ± 1.89‰) and organic matter degradation (-22.33 ± 1.82‰). This result confirmed the use of the CO2 produced within the soil by the biofilm developing at its surface. After removing the top 1-2 mm of soil, both CO2 and CH4 fluxes increased. Enhancement of CH4 fluxes suggests that biofilm may act as a physical barrier to the transfer of GHG from the soil to the atmosphere. However, the δ13C-CO2 became more enriched, evidencing that the biofilm was not integrally removed, and that its partial removal resulted in physical disturbance that stimulated CO2 production. Therefore, this study provides useful information to understand the global implication of mangroves in climate change mitigation.
Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 37 citations 37 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down The Science of The Total EnvironmentArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2018.09.093&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Hindawi Limited A. Emmanuel Lawin; Brice Sinsin; Clément Ahouannou; Julien Adounkpe; Rufin Offin Lié Akiyo;doi: 10.1155/2013/480137
As a result of the global warming, the atmospheric temperature in sub-Saharan regions of Africa may drastically increase, thus worsening the poor living conditions already experienced by people in those regions. Roof’s thermal insulation capacity may play key role in reducing indoor thermal comfort cost. In the present study, effort is put to model heat transfer through roofs in south Saharan regions. Validation of the model was achieved using the slightly sloppy galvanized aluminum-iron sheet roof. Atmospheric data were hourly measured during April and June in Ouagadougou, Burkina Faso. Solar energy values increase from 24.50±0.50 W/m2 in the morning to a maximum of 900.1±0.8 W/m2 in the early afternoon. Ambient temperature follows the same trend as solar radiation with a maximum at 40.0±0.2°C. Wind speed varies from 0.5 to 4.0±0.1 m/s. The measured roof inner wall temperatures agreed excellently with the developed model with a Nash-Sutcliffe Coefficient of Efficiency of 0.988. Energy flux entering the room through the roof varies from 63.1±0.3 W/m2 earlier in the morning to a maximum of 115.3±0.5 W/m2 in the earlier afternoon. These results shall help to better design human habitat under changing climate conditions in the sub-Saharan regions.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Hindawi Limited A. Emmanuel Lawin; Brice Sinsin; Clément Ahouannou; Julien Adounkpe; Rufin Offin Lié Akiyo;doi: 10.1155/2013/480137
As a result of the global warming, the atmospheric temperature in sub-Saharan regions of Africa may drastically increase, thus worsening the poor living conditions already experienced by people in those regions. Roof’s thermal insulation capacity may play key role in reducing indoor thermal comfort cost. In the present study, effort is put to model heat transfer through roofs in south Saharan regions. Validation of the model was achieved using the slightly sloppy galvanized aluminum-iron sheet roof. Atmospheric data were hourly measured during April and June in Ouagadougou, Burkina Faso. Solar energy values increase from 24.50±0.50 W/m2 in the morning to a maximum of 900.1±0.8 W/m2 in the early afternoon. Ambient temperature follows the same trend as solar radiation with a maximum at 40.0±0.2°C. Wind speed varies from 0.5 to 4.0±0.1 m/s. The measured roof inner wall temperatures agreed excellently with the developed model with a Nash-Sutcliffe Coefficient of Efficiency of 0.988. Energy flux entering the room through the roof varies from 63.1±0.3 W/m2 earlier in the morning to a maximum of 115.3±0.5 W/m2 in the earlier afternoon. These results shall help to better design human habitat under changing climate conditions in the sub-Saharan regions.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1155/2013/480137&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2003 FrancePublisher:Elsevier BV Authors: Calderon, M.; Loiseau, Gérard; Guyot, Jean-Pierre;pmid: 12381402
Glucose, fructose, sucrose and starch are naturally present in cereals. Fermentation of different combinations of these carbohydrates by Lactobacillus fermentum Ogi E1, a sourdough heterofermentative lactobacillus, was investigated to determine effects on fermentation kinetics, growth energetics and alpha-amylase production. Irrespective of the substrate combination, the strain was able to simultaneously produce alpha-amylase and consume starch, glucose, fructose and sucrose. In mixtures of starch with either sucrose or fructose or with both fructose and glucose, yields of alpha-amylase from biomass (Y(amy/x)) were similar to those observed for starch. However, for starch and glucose or starch, glucose, fructose and sucrose mixtures, both Y(amy/x) and the specific rate of alpha-amylase production decreased markedly. In fructose- or sucrose-containing mixtures, mannitol was formed stoichiometrically indicating that fructose served as electron acceptor, and acetate was produced at constant yield from biomass (Y(ac/x)) (1 g acetate g biomass(-1)). Acetate production was expected to confer to the strain a competitive advantage during natural fermentation by improving biomass formation and growth through an increase in the ATP gain. Y(ATP) varied depending on the carbohydrate mixture, indicating different effects of substrate mixtures on the efficiency in ATP coupling to biomass formation. Compared to starch fermentation, the highest value of Y(ATP) (29 g biomass mol ATP(-1)) was estimated for the starch/fructose mixture but no increase in mu(max) was observed. The lowest value (16 g biomass mol ATP(-1)) was obtained for the starch, glucose and fructose mixture, whereas for the mixture of all carbohydrates, Y(ATP) was similar to that obtained with starch alone (20 g biomass mol ATP(-1)) and it was intermediary for the starch and sucrose mixture (17 g biomass mol ATP(-1)). It is concluded that competitiveness of the strain cannot be based on expected energy gain in mixed substrate fermentation involving fructose and sucrose with glucose and starch, but rather on its ability to simultaneously use carbohydrates while producing alpha-amylase and to produce acetic acid. Acetic acid production could enhance the strain capacity to inhibit nonacid-tolerant, competitive microflora at the earlier stage of natural fermentation.
International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/s0168-1605(02)00147-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu34 citations 34 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/s0168-1605(02)00147-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2003 FrancePublisher:Elsevier BV Authors: Calderon, M.; Loiseau, Gérard; Guyot, Jean-Pierre;pmid: 12381402
Glucose, fructose, sucrose and starch are naturally present in cereals. Fermentation of different combinations of these carbohydrates by Lactobacillus fermentum Ogi E1, a sourdough heterofermentative lactobacillus, was investigated to determine effects on fermentation kinetics, growth energetics and alpha-amylase production. Irrespective of the substrate combination, the strain was able to simultaneously produce alpha-amylase and consume starch, glucose, fructose and sucrose. In mixtures of starch with either sucrose or fructose or with both fructose and glucose, yields of alpha-amylase from biomass (Y(amy/x)) were similar to those observed for starch. However, for starch and glucose or starch, glucose, fructose and sucrose mixtures, both Y(amy/x) and the specific rate of alpha-amylase production decreased markedly. In fructose- or sucrose-containing mixtures, mannitol was formed stoichiometrically indicating that fructose served as electron acceptor, and acetate was produced at constant yield from biomass (Y(ac/x)) (1 g acetate g biomass(-1)). Acetate production was expected to confer to the strain a competitive advantage during natural fermentation by improving biomass formation and growth through an increase in the ATP gain. Y(ATP) varied depending on the carbohydrate mixture, indicating different effects of substrate mixtures on the efficiency in ATP coupling to biomass formation. Compared to starch fermentation, the highest value of Y(ATP) (29 g biomass mol ATP(-1)) was estimated for the starch/fructose mixture but no increase in mu(max) was observed. The lowest value (16 g biomass mol ATP(-1)) was obtained for the starch, glucose and fructose mixture, whereas for the mixture of all carbohydrates, Y(ATP) was similar to that obtained with starch alone (20 g biomass mol ATP(-1)) and it was intermediary for the starch and sucrose mixture (17 g biomass mol ATP(-1)). It is concluded that competitiveness of the strain cannot be based on expected energy gain in mixed substrate fermentation involving fructose and sucrose with glucose and starch, but rather on its ability to simultaneously use carbohydrates while producing alpha-amylase and to produce acetic acid. Acetic acid production could enhance the strain capacity to inhibit nonacid-tolerant, competitive microflora at the earlier stage of natural fermentation.
International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/s0168-1605(02)00147-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu34 citations 34 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert International Journa... arrow_drop_down International Journal of Food MicrobiologyArticle . 2003 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/s0168-1605(02)00147-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu