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  • European Marine Science

  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Thyrring, Jakob; Wegeberg, Susse; Blicher, Martin E.; Krause-Jensen, Dorte; +6 Authors

    The data contains three supporting datasets: 1. Mid-intertidal data 2. Vertical transect data 3. GPS coordinates for all sites

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
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    ZENODO
    Dataset . 2020
    License: CC BY
    Data sources: Datacite
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    ZENODO
    Dataset . 2020
    License: CC BY
    Data sources: Datacite
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    ZENODO
    Dataset . 2020
    License: CC BY
    Data sources: ZENODO
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
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      ZENODO
      Dataset . 2020
      License: CC BY
      Data sources: Datacite
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      ZENODO
      Dataset . 2020
      License: CC BY
      Data sources: Datacite
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ZENODO
      Dataset . 2020
      License: CC BY
      Data sources: ZENODO
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    Authors: Ausems, Anne; Kuepper, Nadja; Archuby, Diego; Braun, Christina; +15 Authors

    This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Isla 25 de Mayo, Antarctica) over a forty year period (1978 – 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Data on population productivity (number of nests, eggs, chicks and fledglings) was collected by regular visits to the colonies and searching for nest burrows, or monitoring of the egg or chick if found. Data on adult abundance and estimated age categories (i.e., presence of foot spots; Quillfeldt et al. (2000, doi:10.1007/s003000000167) were collected at CA by using the same size mistnet every study year in the same location within the breeding colony. Chicks were measured regularly (varying intervals depending on the study) at both CA and HA. Chick tarsus was measured using callipers (vernier or digital depending on the study year) to the nearest 0.1 mm, chick wing length was measured using wing rulers to the nearest 1 mm, and chick body mass was measured using mechanical or digital scales depending on the study year to the nearest 0.1 g. Chick growth rates were calculated based on the linear growth period following Ausems et al. (2020, doi:10.1016/j.scitotenv.2020.138768). Chick food loads (g) were recorded at CA and determined based on changes in chick body mass on consecutive days (Gladbach et al. (2009, doi:10.1007/s00300-009-0628-z); Kuepper et al. (2018, doi:10.1016/j.cbpa.2018.06.018). This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)

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    PANGAEA
    Dataset . 2023
    Data sources: PANGAEA
    PANGAEA - Data Publisher for Earth and Environmental Science
    Collection . 2023
    License: CC BY SA
    Data sources: Datacite
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      PANGAEA
      Dataset . 2023
      Data sources: PANGAEA
      PANGAEA - Data Publisher for Earth and Environmental Science
      Collection . 2023
      License: CC BY SA
      Data sources: Datacite
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: von Schuckmann, Karina; Minière, Audrey; Gues, Flora; Cuesta-Valero, Francisco José; +58 Authors

    Project: GCOS Earth Heat Inventory - A study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory (EHI), and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period from 1960 to present. Summary: The file “GCOS_EHI_1960-2020_Earth_Heat_Inventory_Ocean_Heat_Content_data.nc” contains a consistent long-term Earth system heat inventory over the period 1960-2020. Human-induced atmospheric composition changes cause a radiative imbalance at the top-of-atmosphere which is driving global warming. Understanding the heat gain of the Earth system from this accumulated heat – and particularly how much and where the heat is distributed in the Earth system - is fundamental to understanding how this affects warming oceans, atmosphere and land, rising temperatures and sea level, and loss of grounded and floating ice, which are fundamental concerns for society. This dataset is based on a study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory published in von Schuckmann et al. (2020), and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period 1960-2020. The dataset also contains estimates for global ocean heat content over 1960-2020 for different depth layers, i.e., 0-300m, 0-700m, 700-2000m, 0-2000m, 2000-bottom, which are described in von Schuckmann et al. (2022). This version includes an update of heat storage of global ocean heat content, where one additional product (Li et al., 2022) had been included to the initial estimate. The Earth heat inventory had been updated accordingly, considering also the update for continental heat content (Cuesta-Valero et al., 2023).

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ World Data Center fo...arrow_drop_down
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    World Data Center for Climate
    Dataset . 2023
    License: CC BY
    Data sources: Datacite
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ World Data Center fo...arrow_drop_down
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      World Data Center for Climate
      Dataset . 2023
      License: CC BY
      Data sources: Datacite
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  • Authors: Heidi Kreibich; Anne F. Van Loon; Kai Schröter; Philip J. Ward; +87 Authors

    La gestion des risques a réduit la vulnérabilité aux inondations et aux sécheresses dans le monde1,2, mais leurs impacts continuent d'augmenter3. Une meilleure compréhension des causes de l'évolution des impacts est donc nécessaire, mais a été entravée par un manque de données empiriques4,5. Sur la base d'un ensemble de données mondiales de 45 paires d'événements qui se sont produits dans la même zone, nous montrons que la gestion des risques réduit généralement les impacts des inondations et des sécheresses, mais fait face à des difficultés pour réduire les impacts d'événements sans précédent d'une ampleur jamais connue auparavant. Si le deuxième événement était beaucoup plus dangereux que le premier, son impact était presque toujours plus élevé. En effet, la gestion n'a pas été conçue pour faire face à de tels événements extrêmes : par exemple, ils ont dépassé les niveaux de conception des digues et des réservoirs. Dans deux cas de réussite, l'impact du deuxième événement, plus dangereux, a été plus faible, en raison de l'amélioration de la gouvernance de la gestion des risques et des investissements élevés dans la gestion intégrée. La difficulté observée à gérer des événements sans précédent est alarmante, étant donné que des événements hydrologiques plus extrêmes sont projetés en raison du changement climatique3. La gestión de riesgos ha reducido la vulnerabilidad a las inundaciones y sequías a nivel mundial1,2, pero sus impactos siguen aumentando3. Por lo tanto, se necesita una mejor comprensión de las causas de los impactos cambiantes, pero se ha visto obstaculizada por la falta de datos empíricos4,5. Sobre la base de un conjunto de datos global de 45 pares de eventos que ocurrieron dentro de la misma área, mostramos que la gestión de riesgos generalmente reduce los impactos de inundaciones y sequías, pero enfrenta dificultades para reducir los impactos de eventos sin precedentes de una magnitud no experimentada anteriormente. Si el segundo evento era mucho más peligroso que el primero, su impacto era casi siempre mayor. Esto se debe a que la gestión no fue diseñada para hacer frente a tales eventos extremos: por ejemplo, superaron los niveles de diseño de diques y embalses. En dos casos de éxito, el impacto del segundo evento, más peligroso, fue menor, como resultado de una mejor gobernanza de la gestión de riesgos y una alta inversión en la gestión integrada. La dificultad observada para gestionar eventos sin precedentes es alarmante, dado que se proyectan eventos hidrológicos más extremos debido al cambio climático3. Risk management has reduced vulnerability to floods and droughts globally1,2, yet their impacts are still increasing3. An improved understanding of the causes of changing impacts is therefore needed, but has been hampered by a lack of empirical data4,5. On the basis of a global dataset of 45 pairs of events that occurred within the same area, we show that risk management generally reduces the impacts of floods and droughts but faces difficulties in reducing the impacts of unprecedented events of a magnitude not previously experienced. If the second event was much more hazardous than the first, its impact was almost always higher. This is because management was not designed to deal with such extreme events: for example, they exceeded the design levels of levees and reservoirs. In two success stories, the impact of the second, more hazardous, event was lower, as a result of improved risk management governance and high investment in integrated management. The observed difficulty of managing unprecedented events is alarming, given that more extreme hydrological events are projected owing to climate change3. أدت إدارة المخاطر إلى تقليل التعرض للفيضانات والجفاف على مستوى العالم1,2، ومع ذلك لا تزال آثارها تتزايد3. لذلك هناك حاجة إلى فهم أفضل لأسباب تغير التأثيرات، ولكن أعيق ذلك بسبب نقص البيانات التجريبية4، 5. على أساس مجموعة بيانات عالمية مكونة من 45 زوجًا من الأحداث التي وقعت داخل نفس المنطقة، نظهر أن إدارة المخاطر تقلل عمومًا من آثار الفيضانات والجفاف ولكنها تواجه صعوبات في الحد من آثار الأحداث غير المسبوقة ذات الحجم الذي لم تشهده من قبل. إذا كان الحدث الثاني أكثر خطورة من الأول، فإن تأثيره كان دائمًا أعلى. وذلك لأن الإدارة لم تكن مصممة للتعامل مع مثل هذه الأحداث المتطرفة: على سبيل المثال، تجاوزت مستويات تصميم السدود والخزانات. في قصتي نجاح، كان تأثير الحدث الثاني، الأكثر خطورة، أقل، نتيجة لتحسين حوكمة إدارة المخاطر والاستثمار العالي في الإدارة المتكاملة. إن الصعوبة الملحوظة في إدارة الأحداث غير المسبوقة تنذر بالخطر، بالنظر إلى أنه من المتوقع حدوث المزيد من الأحداث الهيدرولوجية المتطرفة بسبب تغير المناخ3.

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  • Authors: Melcher, Andreas Helmut;

    Im Jahr 2000 führte die Europäische Union (EU) die Wasserrahmenrichtlinie (WRRL) ein, eines der weltweit modernsten Gesetze zum Thema Wasser, dessen vorrangiges Ziel es ist, bis zum Jahr 2015 den „guten ökologischen“ Zustand von Fliessgewässern zu erreichen. Fische sind als besonders sensibel gegenüber anthropogenen Eingriffen (Hydrologie, Morphologie, Kontinuum und Wasserqualität) bekannt, deswegen wurden sie für die WRRL als mögliche Indikatoren, welche den ökologischen Zustand anzeigen können, ausgewählt. Ein wesentliches Ziel dieser Dissertation ist daher die Entwicklung und Evaluierung einer geeigneten Methode zur Bewertung der ökologischen Funktionsfähigkeit von Fliessgewässern. Um den aktuellen Zustand der europäischen Fischfauna unter Berücksichtigung von verschiedenen Belastungen analysieren zu können, wurde zunächst eine Datenbank mit mehr als 8 200 Probenstellen samt Fisch-, Umwelt- und Belastungsdaten zusammengestellt. Zusätzlich wurden relevante Kriterien definiert, die Art und den Grad der anthropogenen Belastungen charakterisieren. Zwei unterschiedliche Ansätze zur Bewertung wurden schliesslich gewählt: die so genannten „spatially based“ Modelle (SBM EU) und ein multimetrisches Modell, dem später weiterentwickelten Europäischen Fischindex (EFI, Pont et al. 2007). Ein Vorteil des EFI ist, dass er, obwohl aus einem Index bestehend, in weiten Bereichen anwendbar ist, was eine Vergleichbarkeit von Bewertungsergebnissen innerhalb der EU ermöglichen soll. Multivariate Analyseverfahren von verschiedenen Belastungstypen, samt der neuerdings zu berücksichtigenden Klimaerwärmung, auf verschiedenen räumlichen und zeitlichen Betrachtungsebenen, erlauben die Quantifizierung des Zusammenhanges von Fisch und Eingriff. Zukünftige Forschungen sollen vor allem den kumulativen Einfluss von Belastungen beinhalten. Zusätzlich unterstützen Habitatmodellierungen die Auswahl und Beurteilung von geeigneten Restaurationsmassnahmen, um, wie von der WRRL gefordert, den guten ökologischen Zustand von Fliessgewässern zu erreichen. Diese Arbeit wurde hauptsächlich im Rahmen von FAME (http://fame.boku.ac.at), einem Projekt des fünften Rahmenprogramms der EU, erstellt. ; In the year 2000, the most modern water legislation in the world the Water Framework Directive (WFD) was launched by the European Union. One of its key objectives is to achieve the “good ecological status” of running waters within the next 15 years. As fish are known to be sensitive to chemical and hydromorphological pressures, in particular continuum interruptions, the WFD consider them as potential indicators for assessing the ecological status of rivers. Therefore, the objectives of this PhD thesis were to develop and evaluate a standardised fish-based method for assessing the ecological status of European running waters. In order to analyse the present status of the European fish fauna with regard to typical chemical and hydromorphological pressures, a database containing information on more than 8,200 fishing sites was compiled. Relevant criteria characterising anthropogenic pressures such as hydrological alterations (flow diversion, hydro-peaking), impoundment, channelisation, continuum interruptions (lateral, longitudinal) and water quality changes were defined. Two different methodologies were used: the so-called spatially based modelling (SBM EU) and multi-metric modelling, the latter leading to the European Fish Index (EFI, Pont et al. 2007). Despite being a single index the EFI is applicable to a wide range of environmental conditions across Europe and is suitable for intercalibration purposes. Multivariate analyses of different types of pressures including global warming on different spatial and temporal scales permit a quantification of relationships between pressures and fish. Future publications should focus on the cumulative impact of pressures. Additionally, habitat modelling results should be used to support the selection of the most appropriate combination of restoration measures, according to the WFD, to achieve good ecological status or potential of running waters. This thesis was carried out mainly within FAME (http://fame.boku.ac.at), a project under the fifth R&D Framework Programme of the European Commission. ; verf. und eingereicht von Andreas Helmut Melcher ; Zsfassung in dt. Sprache ; Wien, Univ. für Bodenkultur, Diss., 2009 ; OeBB ; (VLID)1931692

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  • Authors: Malte Meinshausen; Carl‐Friedrich Schleussner; Kathleen Beyer; G. E. Bodeker; +37 Authors

    Résumé. Dans chaque cycle d'évaluation du GIEC, une multitude de scénarios sont évalués, avec une portée et une importance différentes dans les différents groupes de travail et rapports spéciaux et leurs chapitres respectifs. Dans les rapports, l'ambition est d'intégrer les connaissances sur les futurs climatiques possibles dans les groupes de travail et les domaines de recherche scientifique sur la base d'un petit ensemble de « voies de cadrage », telles que les voies dites RCP du cinquième rapport d'évaluation du GIEC (AR5) et les scénarios SSP-RCP dans le sixième rapport d'évaluation (AR6). Cette perspective, initiée par les discussions lors de l'atelier du GIEC à Bangkok en avril 2023 sur « l'utilisation des scénarios dans le RE6 et les évaluations ultérieures », est destinée à servir d'une des contributions de la communauté pour mettre en évidence les besoins pour la prochaine génération de voies de cadrage qui est avancée sous l'égide du CMIP pour une utilisation dans le RE7 du GIEC. Ici, nous suggérons un certain nombre d'objectifs de recherche politique qu'un tel ensemble de voies d'encadrement devrait idéalement remplir, y compris les besoins d'atténuation pour atteindre les objectifs de l'Accord de Paris, les risques associés aux stratégies d'élimination du carbone, les conséquences du retard dans la mise en œuvre de cette atténuation, des conseils pour les besoins d'adaptation, les pertes et les dommages, et pour la réalisation de l'atténuation dans le contexte plus large des objectifs de développement sociétal. Sur la base de ce contexte, nous suggérons que la prochaine génération de scénarios climatiques pour les modèles du système terrestre évolue vers des « voies d'émission représentatives » (REP) et suggérons des catégories clés pour ces voies. Ces « voies d'encadrement » devraient répondre aux besoins les plus critiques en matière de politique d'atténuation et d'adaptation au cours des 5 à 10 prochaines années. À notre avis, les catégories les plus importantes sont celles qui sont pertinentes dans le contexte de l'objectif à long terme de l'Accord de Paris, en particulier une action immédiate (dépassement faible) de 1,5 °C et une action retardée (dépassement élevé) de 1,5 °C. Deux autres catégories clés sont une catégorie de trajectoire approximativement conforme aux objectifs politiques actuels (tels qu'exprimés d'ici 2023) à court et à long terme, et une catégorie d'émissions plus élevées qui est approximativement conforme aux « politiques actuelles » (telles qu'exprimées d'ici 2023). Nous plaidons également en faveur de la pertinence scientifique et politique de l'exploration de deux « mondes qui auraient pu l'être ». L'une de ces catégories a des trajectoires d'émissions élevées bien au-dessus de ce que les politiques actuelles impliquent, et l'autre a des trajectoires d'émissions très faibles qui supposent que les mesures d'atténuation mondiales visant à limiter le réchauffement à 1,5 °C sans dépassement ont commencé en 2015. Enfin, nous notons que la fourniture en temps opportun de nouvelles informations scientifiques sur les voies est essentielle pour éclairer l'élaboration et la mise en œuvre de la politique climatique. Pour le deuxième bilan mondial dans le cadre de l'Accord de Paris en 2028, et pour éclairer le développement ultérieur des contributions déterminées au niveau national (CDN) jusqu'en 2040, des contributions scientifiques sont nécessaires bien avant 2028. Ces besoins doivent être soigneusement pris en compte dans le calendrier d'élaboration des activités de modélisation communautaire, y compris celles menées dans le cadre du CMIP7. Resumen. En cada ciclo de Evaluación del IPCC, se evalúan una multitud de escenarios, con diferentes alcances y énfasis a lo largo de los diversos Grupos de Trabajo e Informes Especiales y sus respectivos capítulos. Dentro de los informes, la ambición es integrar el conocimiento sobre posibles futuros climáticos en los Grupos de Trabajo y los dominios de investigación científica basados en un pequeño conjunto de "vías de encuadre", como las llamadas vías RCP del Quinto Informe de Evaluación del IPCC (AR5) y los escenarios SSP-RCP en el Sexto Informe de Evaluación (AR6). Esta perspectiva, iniciada por las discusiones en el taller del IPCC en Bangkok en abril de 2023 sobre el "Uso de escenarios en el IE6 y evaluaciones posteriores", pretende servir como una de las contribuciones de la comunidad para resaltar las necesidades de la próxima generación de vías de encuadre que se está avanzando bajo el paraguas del CMIP para su uso en el IE7 del IPCC. Aquí sugerimos una serie de objetivos de investigación de políticas que ese conjunto de vías de encuadre debería cumplir idealmente, incluidas las necesidades de mitigación para cumplir los objetivos del Acuerdo de París, los riesgos asociados con las estrategias de eliminación de carbono, las consecuencias del retraso en la promulgación de esa mitigación, la orientación para las necesidades de adaptación, las pérdidas y los daños, y para lograr la mitigación en el contexto más amplio de los objetivos de desarrollo social. Con base en este contexto, sugerimos que la próxima generación de escenarios climáticos para los Modelos del Sistema Terrestre evolucione hacia 'Vías de Emisión Representativas' (REP) y sugerimos categorías clave para tales vías. Estas "vías de encuadre" deberían abordar las políticas de mitigación y las necesidades de adaptación más críticas en los próximos 5–10 años. En nuestra opinión, las categorías más importantes son las relevantes en el contexto del objetivo a largo plazo del Acuerdo de París, específicamente una vía de acción inmediata (sobrepaso bajo) de 1,5 °C y una vía de acción retardada (sobrepaso alto) de 1,5 °C. Otras dos categorías clave son una categoría de vía aproximadamente en línea con los objetivos políticos actuales (expresados para 2023) a corto y largo plazo, y una categoría de emisiones más altas que está aproximadamente en línea con las "políticas actuales" (expresadas para 2023). También defendemos la relevancia científica y política de explorar dos "mundos que podrían haber sido". Una de estas categorías tiene trayectorias de altas emisiones muy por encima de lo que implican las políticas actuales, y la otra tiene trayectorias de muy bajas emisiones que asumen que la acción de mitigación global en línea con la limitación del calentamiento a 1.5 ° C sin sobrepasar había comenzado en 2015. Finalmente, observamos que el suministro oportuno de nueva información científica sobre las vías es fundamental para informar el desarrollo y la implementación de la política climática. Para el segundo Balance Global bajo el Acuerdo de París en 2028, y para informar el desarrollo posterior de las Contribuciones Determinadas a Nivel Nacional (NDC) hasta 2040, se requieren insumos científicos mucho antes de 2028. Estas necesidades deben considerarse cuidadosamente en el cronograma de desarrollo de las actividades de modelado comunitario, incluidas las del CMIP7. Abstract. In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is to integrate knowledge on possible climate futures across the Working Groups and scientific research domains based on a small set of ‘framing pathways’, such as the so-called RCP pathways from the Fifth IPCC Assessment report (AR5) and the SSP-RCP scenarios in the Sixth Assessment Report (AR6). This perspective, initiated by discussions at the IPCC Bangkok workshop in April 2023 on the “Use of Scenarios in AR6 and Subsequent Assessments”, is intended to serve as one of the community contributions to highlight needs for the next generation of framing pathways that is being advanced under the CMIP umbrella for use in the IPCC AR7. Here we suggest a number of policy research objectives that such a set of framing pathways should ideally fulfil, including mitigation needs for meeting the Paris Agreement objectives, the risks associated with carbon removal strategies, the consequences of delay in enacting that mitigation, guidance for adaptation needs, loss and damage, and for achieving mitigation in the wider context of Societal Development goals. Based on this context we suggest that the next generation of climate scenarios for Earth System Models should evolve towards ‘Representative Emission Pathways’ (REPs) and suggest key categories for such pathways. These ‘framing pathways’ should address the most critical mitigation policy and adaptation needs over the next 5–10 years. In our view the most important categories are those relevant in the context of the Paris Agreement long-term goal, specifically an immediate action (low overshoot) 1.5 °C pathway, and a delayed action (high overshoot) 1.5 °C pathway. Two other key categories are a pathway category approximately in line with current (as expressed by 2023) near- and long-term policy objectives, and a higher emissions category that is approximately in line with “current policies” (as expressed by 2023). We also argue for the scientific and policy relevance in exploring two ‘worlds that could have been’. One of these categories has high emission trajectories well above what is implied by current policies, and the other has very low emission trajectories that assume that global mitigation action in line with limiting warming to 1.5 °C without overshoot had begun in 2015. Finally, we note that timely provision of new scientific information on pathways is critical to inform the development and implementation of climate policy. For the second Global Stocktake under the Paris Agreement in 2028, and to inform subsequent development of Nationally Determined Contributions (NDCs) up to 2040, scientific inputs are required well before 2028. These needs should be carefully considered in the development timeline of community modelling activities including those under CMIP7. الملخص. في كل دورة تقييم للهيئة الحكومية الدولية المعنية بتغير المناخ، يتم تقييم العديد من السيناريوهات، مع نطاق وتركيز مختلفين في مختلف مجموعات العمل والتقارير الخاصة وفصولها. ضمن التقارير، يتمثل الطموح في دمج المعرفة حول المستقبل المناخي المحتمل عبر مجموعات العمل ومجالات البحث العلمي بناءً على مجموعة صغيرة من "مسارات التأطير"، مثل ما يسمى مسارات RCP من تقرير التقييم الخامس للهيئة الحكومية الدولية المعنية بتغير المناخ (AR5) وسيناريوهات SSP - RCP في تقرير التقييم السادس (AR6). يهدف هذا المنظور، الذي بدأته المناقشات في ورشة عمل الفريق الحكومي الدولي المعني بتغير المناخ في بانكوك في أبريل 2023 حول "استخدام السيناريوهات في التقرير التقييمي السادس والتقييمات اللاحقة"، إلى أن يكون أحد مساهمات المجتمع لتسليط الضوء على احتياجات الجيل القادم من مسارات التأطير التي يتم تطويرها تحت مظلة الفريق الحكومي الدولي المعني بتغير المناخ لاستخدامها في التقرير التقييمي السابع للفريق الحكومي الدولي المعني بتغير المناخ. نقترح هنا عددًا من أهداف أبحاث السياسات التي يجب أن تلبيها مجموعة مسارات التأطير هذه بشكل مثالي، بما في ذلك احتياجات التخفيف لتحقيق أهداف اتفاق باريس، والمخاطر المرتبطة باستراتيجيات إزالة الكربون، وعواقب التأخير في سن هذا التخفيف، وتوجيه احتياجات التكيف، والخسائر والأضرار، ولتحقيق التخفيف في السياق الأوسع لأهداف التنمية المجتمعية. بناءً على هذا السياق، نقترح أن يتطور الجيل التالي من سيناريوهات المناخ لنماذج النظام الأرضي نحو "مسارات الانبعاثات التمثيلية" (REPs) واقتراح الفئات الرئيسية لمثل هذه المسارات. يجب أن تتناول "مسارات التأطير" هذه أهم سياسات التخفيف واحتياجات التكيف على مدى السنوات الخمس إلى العشر القادمة. من وجهة نظرنا، فإن أهم الفئات هي تلك ذات الصلة في سياق الهدف طويل الأجل لاتفاق باريس، وتحديداً مسار الإجراء الفوري (التجاوز المنخفض) 1.5 درجة مئوية، ومسار الإجراء المتأخر (التجاوز العالي) 1.5 درجة مئوية. هناك فئتان رئيسيتان أخريان هما فئة المسار التي تتماشى تقريبًا مع أهداف السياسة الحالية (كما هو معبر عنه بحلول عام 2023) على المدى القريب والطويل، وفئة الانبعاثات الأعلى التي تتماشى تقريبًا مع "السياسات الحالية" (كما هو معبر عنه بحلول عام 2023). كما ندعو إلى الأهمية العلمية والسياسية لاستكشاف "عالمين كان من الممكن أن يكونا". واحدة من هذه الفئات لديها مسارات انبعاثات عالية أعلى بكثير مما تنطوي عليه السياسات الحالية، والأخرى لديها مسارات انبعاثات منخفضة للغاية تفترض أن إجراءات التخفيف العالمية بما يتماشى مع الحد من الاحترار إلى 1.5 درجة مئوية دون تجاوز قد بدأت في عام 2015. أخيرًا، نلاحظ أن توفير المعلومات العلمية الجديدة في الوقت المناسب حول المسارات أمر بالغ الأهمية لإثراء تطوير وتنفيذ سياسة المناخ. بالنسبة للتقييم العالمي الثاني بموجب اتفاقية باريس في عام 2028، وللإبلاغ عن التطوير اللاحق للمساهمات المحددة وطنيًا (NDCs) حتى عام 2040، هناك حاجة إلى مدخلات علمية قبل عام 2028 بوقت طويل. يجب النظر في هذه الاحتياجات بعناية في الجدول الزمني لتطوير أنشطة النمذجة المجتمعية بما في ذلك تلك الموجودة في إطار CMIP7.

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  • Authors: Andrea K. Steiner; Ben Marzeion; Maeva Monier; Masayoshi Ishii; +34 Authors

    Project: GCOS Earth Heat Inventory - A study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory (EHI), and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period 1960-2018. Summary: ‘Heat stored in the Earth system: Where does the energy go?’ contains a consistent long-term Earth system heat inventory over the period 1960-2018. Human-induced atmospheric composition changes cause a radiative imbalance at the top-of-atmosphere which is driving global warming. This Earth Energy Imbalance (EEI) is the most critical number defining the prospects for continued global warming and climate change. Understanding the heat gain of the Earth system from this accumulated heat – and particularly how much and where the heat is distributed in the Earth system - is fundamental to understanding how this affects warming oceans, atmosphere and land, rising temperatures and sea level, and loss of grounded and floating ice, which are fundamental concerns for society. This dataset is based on a study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory, and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period 1960-2018. Changes in version 2: a) uncertainties have been added and updated in the netcdf file b) Ocean heat content > 2000m depth: update of one time series, and thus revised ensemble mean c) Atmospheric heat content: update of the time series as received by experts on the 29/05/2020 d) Available heat cyropshere: update of the time series as received by experts on the 27/05/2020. e) some attributes have been added for more details.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Ausems, Anne; Kuepper, Nadja; Archuby, Diego; Braun, Christina; +15 Authors

    This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Islas 25 de Mayo, Antarctica) over a forty year period (1978 - 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Data on adult abundance and estimated age categories (i.e., presence of foot spots; Quillfeldt et al. (2000, doi:10.1007/s003000000167) were collected at CA by using the same size mistnet every study year in the same location within the breeding colony. Adults were ringed with a metal leg ring, and their foot webs were checked for foot spots. This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)

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    PANGAEA
    Dataset . 2023
    Data sources: PANGAEA
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      PANGAEA
      Dataset . 2023
      Data sources: PANGAEA
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  • Authors: Kulesz, Joanna; Rakusa-Suszczewski, Stanisław; Polska Akademia Nauk. Muzeum i Instytut Zoologii;

    Of the 168 fish species living in the Western Antarctic, 104 species belonging to 20 families occur in the South Shetland area: 39 species from 10 families have been found in the Admiralty Bay, 91 species (29 families) in theSouth Georgia area; the South Orkney region hosts 74 species from 18 families while the near Antarctic Peninsula shelf 71 species from 19 families. The respective figures were lower in the Southern Sandwich area, amounting to 44 species from 17 families. Endemic species amounted to 61.2%, the remaing 38.8% being cosmopolitan. The South Georgia area and the neighbouring Shag Rocks area differed also in the composition and biomass of several commercially harvested fish species, such as Pseudochaenichthys georgianus Norman, 1937, Notothenia rossii Richardson, 1844, Patagonotothen guntheri Norman, 1937 or Lepidonotothen squamifrons Günther, 1880. The South Shetland and Antarctic Peninsula regions were also distinguished from the South Georgia region by the presence of Champsocephalus gunnari Lönnberg, 1905 and above all, by the biomass of Gobionotothen gibberifrons Lönnberg, 1905, which is present in the former, but not found in the latter of the areas. ; Bibliogr. p. 228-229 ; P. 217-229 : ill. ; 25 cm ; Abstarct in Polish. Taxa in Latin. ; W niniejszym opracowaniu wykazano, że podział zaproponowany przez Andriasheva (1965) może być rozpatrywany jako słuszny lub nie w zależności od rozpatrywanych grup ichtiologicznych i analizowanych obszarów Zachodniej Antarktyki. Podział Zachodniej Antarktyki dokonany metodą analizy skupień na podstawie rozmieszczenia wszystkich gatunków endemicznych i gatunków z rodziny Nototheniidae,pokrywał się z podziałem zaproponowanym przez Andriasheva (1965). Inny podział uzyskanobiorąc pod uwagę gatunki z rodzin: Artedidraconidae, Myctophidae, Zoarcidae i Liparididae. Dendrogram oparty na rozmieszczeniu wszystkich gatunków ryb Zachodniej Antarktyki w poszczególnych warstwach wody, uwzględniający endemizm i kosmopolityzm, wskazał, żewiększość gatunków endemicznych ...

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    Authors: Ausems, Anne; Kuepper, Nadja; Archuby, Diego; Braun, Christina; +15 Authors

    This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Islas 25 de Mayo, Antarctica) over a forty year period (1978 – 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Chicks were measured regularly (varying intervals depending on the study) at both CA and HA. Chick tarsus was measured using callipers (vernier or digital depending on the study year) to the nearest 0.1 mm, chick wing length was measured using wing rulers to the nearest 1 mm, and chick body mass was measured using mechanical or digital scales depending on the study year to the nearest 0.1 g. Chick growth rates were calculated based on the linear growth period following Ausems et al. (2020, doi:10.1016/j.scitotenv.2020.138768). Chick food loads (g) were recorded at CA and determined based on changes in chick body mass on consecutive days (Gladbach et al. (2009, doi:10.1007/s00300-009-0628-z); Kuepper et al. (2018, doi:10.1016/j.cbpa.2018.06.018). This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)

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    PANGAEA
    Dataset . 2023
    Data sources: PANGAEA
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      PANGAEA
      Dataset . 2023
      Data sources: PANGAEA
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    Authors: Thyrring, Jakob; Wegeberg, Susse; Blicher, Martin E.; Krause-Jensen, Dorte; +6 Authors

    The data contains three supporting datasets: 1. Mid-intertidal data 2. Vertical transect data 3. GPS coordinates for all sites

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    ZENODO
    Dataset . 2020
    License: CC BY
    Data sources: Datacite
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    ZENODO
    Dataset . 2020
    License: CC BY
    Data sources: Datacite
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    ZENODO
    Dataset . 2020
    License: CC BY
    Data sources: ZENODO
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      ZENODO
      Dataset . 2020
      License: CC BY
      Data sources: Datacite
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      ZENODO
      Dataset . 2020
      License: CC BY
      Data sources: Datacite
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      ZENODO
      Dataset . 2020
      License: CC BY
      Data sources: ZENODO
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    Authors: Ausems, Anne; Kuepper, Nadja; Archuby, Diego; Braun, Christina; +15 Authors

    This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Isla 25 de Mayo, Antarctica) over a forty year period (1978 – 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Data on population productivity (number of nests, eggs, chicks and fledglings) was collected by regular visits to the colonies and searching for nest burrows, or monitoring of the egg or chick if found. Data on adult abundance and estimated age categories (i.e., presence of foot spots; Quillfeldt et al. (2000, doi:10.1007/s003000000167) were collected at CA by using the same size mistnet every study year in the same location within the breeding colony. Chicks were measured regularly (varying intervals depending on the study) at both CA and HA. Chick tarsus was measured using callipers (vernier or digital depending on the study year) to the nearest 0.1 mm, chick wing length was measured using wing rulers to the nearest 1 mm, and chick body mass was measured using mechanical or digital scales depending on the study year to the nearest 0.1 g. Chick growth rates were calculated based on the linear growth period following Ausems et al. (2020, doi:10.1016/j.scitotenv.2020.138768). Chick food loads (g) were recorded at CA and determined based on changes in chick body mass on consecutive days (Gladbach et al. (2009, doi:10.1007/s00300-009-0628-z); Kuepper et al. (2018, doi:10.1016/j.cbpa.2018.06.018). This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)

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    PANGAEA
    Dataset . 2023
    Data sources: PANGAEA
    PANGAEA - Data Publisher for Earth and Environmental Science
    Collection . 2023
    License: CC BY SA
    Data sources: Datacite
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      PANGAEA
      Dataset . 2023
      Data sources: PANGAEA
      PANGAEA - Data Publisher for Earth and Environmental Science
      Collection . 2023
      License: CC BY SA
      Data sources: Datacite
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: von Schuckmann, Karina; Minière, Audrey; Gues, Flora; Cuesta-Valero, Francisco José; +58 Authors

    Project: GCOS Earth Heat Inventory - A study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory (EHI), and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period from 1960 to present. Summary: The file “GCOS_EHI_1960-2020_Earth_Heat_Inventory_Ocean_Heat_Content_data.nc” contains a consistent long-term Earth system heat inventory over the period 1960-2020. Human-induced atmospheric composition changes cause a radiative imbalance at the top-of-atmosphere which is driving global warming. Understanding the heat gain of the Earth system from this accumulated heat – and particularly how much and where the heat is distributed in the Earth system - is fundamental to understanding how this affects warming oceans, atmosphere and land, rising temperatures and sea level, and loss of grounded and floating ice, which are fundamental concerns for society. This dataset is based on a study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory published in von Schuckmann et al. (2020), and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period 1960-2020. The dataset also contains estimates for global ocean heat content over 1960-2020 for different depth layers, i.e., 0-300m, 0-700m, 700-2000m, 0-2000m, 2000-bottom, which are described in von Schuckmann et al. (2022). This version includes an update of heat storage of global ocean heat content, where one additional product (Li et al., 2022) had been included to the initial estimate. The Earth heat inventory had been updated accordingly, considering also the update for continental heat content (Cuesta-Valero et al., 2023).

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    World Data Center for Climate
    Dataset . 2023
    License: CC BY
    Data sources: Datacite
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      World Data Center for Climate
      Dataset . 2023
      License: CC BY
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  • Authors: Heidi Kreibich; Anne F. Van Loon; Kai Schröter; Philip J. Ward; +87 Authors

    La gestion des risques a réduit la vulnérabilité aux inondations et aux sécheresses dans le monde1,2, mais leurs impacts continuent d'augmenter3. Une meilleure compréhension des causes de l'évolution des impacts est donc nécessaire, mais a été entravée par un manque de données empiriques4,5. Sur la base d'un ensemble de données mondiales de 45 paires d'événements qui se sont produits dans la même zone, nous montrons que la gestion des risques réduit généralement les impacts des inondations et des sécheresses, mais fait face à des difficultés pour réduire les impacts d'événements sans précédent d'une ampleur jamais connue auparavant. Si le deuxième événement était beaucoup plus dangereux que le premier, son impact était presque toujours plus élevé. En effet, la gestion n'a pas été conçue pour faire face à de tels événements extrêmes : par exemple, ils ont dépassé les niveaux de conception des digues et des réservoirs. Dans deux cas de réussite, l'impact du deuxième événement, plus dangereux, a été plus faible, en raison de l'amélioration de la gouvernance de la gestion des risques et des investissements élevés dans la gestion intégrée. La difficulté observée à gérer des événements sans précédent est alarmante, étant donné que des événements hydrologiques plus extrêmes sont projetés en raison du changement climatique3. La gestión de riesgos ha reducido la vulnerabilidad a las inundaciones y sequías a nivel mundial1,2, pero sus impactos siguen aumentando3. Por lo tanto, se necesita una mejor comprensión de las causas de los impactos cambiantes, pero se ha visto obstaculizada por la falta de datos empíricos4,5. Sobre la base de un conjunto de datos global de 45 pares de eventos que ocurrieron dentro de la misma área, mostramos que la gestión de riesgos generalmente reduce los impactos de inundaciones y sequías, pero enfrenta dificultades para reducir los impactos de eventos sin precedentes de una magnitud no experimentada anteriormente. Si el segundo evento era mucho más peligroso que el primero, su impacto era casi siempre mayor. Esto se debe a que la gestión no fue diseñada para hacer frente a tales eventos extremos: por ejemplo, superaron los niveles de diseño de diques y embalses. En dos casos de éxito, el impacto del segundo evento, más peligroso, fue menor, como resultado de una mejor gobernanza de la gestión de riesgos y una alta inversión en la gestión integrada. La dificultad observada para gestionar eventos sin precedentes es alarmante, dado que se proyectan eventos hidrológicos más extremos debido al cambio climático3. Risk management has reduced vulnerability to floods and droughts globally1,2, yet their impacts are still increasing3. An improved understanding of the causes of changing impacts is therefore needed, but has been hampered by a lack of empirical data4,5. On the basis of a global dataset of 45 pairs of events that occurred within the same area, we show that risk management generally reduces the impacts of floods and droughts but faces difficulties in reducing the impacts of unprecedented events of a magnitude not previously experienced. If the second event was much more hazardous than the first, its impact was almost always higher. This is because management was not designed to deal with such extreme events: for example, they exceeded the design levels of levees and reservoirs. In two success stories, the impact of the second, more hazardous, event was lower, as a result of improved risk management governance and high investment in integrated management. The observed difficulty of managing unprecedented events is alarming, given that more extreme hydrological events are projected owing to climate change3. أدت إدارة المخاطر إلى تقليل التعرض للفيضانات والجفاف على مستوى العالم1,2، ومع ذلك لا تزال آثارها تتزايد3. لذلك هناك حاجة إلى فهم أفضل لأسباب تغير التأثيرات، ولكن أعيق ذلك بسبب نقص البيانات التجريبية4، 5. على أساس مجموعة بيانات عالمية مكونة من 45 زوجًا من الأحداث التي وقعت داخل نفس المنطقة، نظهر أن إدارة المخاطر تقلل عمومًا من آثار الفيضانات والجفاف ولكنها تواجه صعوبات في الحد من آثار الأحداث غير المسبوقة ذات الحجم الذي لم تشهده من قبل. إذا كان الحدث الثاني أكثر خطورة من الأول، فإن تأثيره كان دائمًا أعلى. وذلك لأن الإدارة لم تكن مصممة للتعامل مع مثل هذه الأحداث المتطرفة: على سبيل المثال، تجاوزت مستويات تصميم السدود والخزانات. في قصتي نجاح، كان تأثير الحدث الثاني، الأكثر خطورة، أقل، نتيجة لتحسين حوكمة إدارة المخاطر والاستثمار العالي في الإدارة المتكاملة. إن الصعوبة الملحوظة في إدارة الأحداث غير المسبوقة تنذر بالخطر، بالنظر إلى أنه من المتوقع حدوث المزيد من الأحداث الهيدرولوجية المتطرفة بسبب تغير المناخ3.

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  • Authors: Melcher, Andreas Helmut;

    Im Jahr 2000 führte die Europäische Union (EU) die Wasserrahmenrichtlinie (WRRL) ein, eines der weltweit modernsten Gesetze zum Thema Wasser, dessen vorrangiges Ziel es ist, bis zum Jahr 2015 den „guten ökologischen“ Zustand von Fliessgewässern zu erreichen. Fische sind als besonders sensibel gegenüber anthropogenen Eingriffen (Hydrologie, Morphologie, Kontinuum und Wasserqualität) bekannt, deswegen wurden sie für die WRRL als mögliche Indikatoren, welche den ökologischen Zustand anzeigen können, ausgewählt. Ein wesentliches Ziel dieser Dissertation ist daher die Entwicklung und Evaluierung einer geeigneten Methode zur Bewertung der ökologischen Funktionsfähigkeit von Fliessgewässern. Um den aktuellen Zustand der europäischen Fischfauna unter Berücksichtigung von verschiedenen Belastungen analysieren zu können, wurde zunächst eine Datenbank mit mehr als 8 200 Probenstellen samt Fisch-, Umwelt- und Belastungsdaten zusammengestellt. Zusätzlich wurden relevante Kriterien definiert, die Art und den Grad der anthropogenen Belastungen charakterisieren. Zwei unterschiedliche Ansätze zur Bewertung wurden schliesslich gewählt: die so genannten „spatially based“ Modelle (SBM EU) und ein multimetrisches Modell, dem später weiterentwickelten Europäischen Fischindex (EFI, Pont et al. 2007). Ein Vorteil des EFI ist, dass er, obwohl aus einem Index bestehend, in weiten Bereichen anwendbar ist, was eine Vergleichbarkeit von Bewertungsergebnissen innerhalb der EU ermöglichen soll. Multivariate Analyseverfahren von verschiedenen Belastungstypen, samt der neuerdings zu berücksichtigenden Klimaerwärmung, auf verschiedenen räumlichen und zeitlichen Betrachtungsebenen, erlauben die Quantifizierung des Zusammenhanges von Fisch und Eingriff. Zukünftige Forschungen sollen vor allem den kumulativen Einfluss von Belastungen beinhalten. Zusätzlich unterstützen Habitatmodellierungen die Auswahl und Beurteilung von geeigneten Restaurationsmassnahmen, um, wie von der WRRL gefordert, den guten ökologischen Zustand von Fliessgewässern zu erreichen. Diese Arbeit wurde hauptsächlich im Rahmen von FAME (http://fame.boku.ac.at), einem Projekt des fünften Rahmenprogramms der EU, erstellt. ; In the year 2000, the most modern water legislation in the world the Water Framework Directive (WFD) was launched by the European Union. One of its key objectives is to achieve the “good ecological status” of running waters within the next 15 years. As fish are known to be sensitive to chemical and hydromorphological pressures, in particular continuum interruptions, the WFD consider them as potential indicators for assessing the ecological status of rivers. Therefore, the objectives of this PhD thesis were to develop and evaluate a standardised fish-based method for assessing the ecological status of European running waters. In order to analyse the present status of the European fish fauna with regard to typical chemical and hydromorphological pressures, a database containing information on more than 8,200 fishing sites was compiled. Relevant criteria characterising anthropogenic pressures such as hydrological alterations (flow diversion, hydro-peaking), impoundment, channelisation, continuum interruptions (lateral, longitudinal) and water quality changes were defined. Two different methodologies were used: the so-called spatially based modelling (SBM EU) and multi-metric modelling, the latter leading to the European Fish Index (EFI, Pont et al. 2007). Despite being a single index the EFI is applicable to a wide range of environmental conditions across Europe and is suitable for intercalibration purposes. Multivariate analyses of different types of pressures including global warming on different spatial and temporal scales permit a quantification of relationships between pressures and fish. Future publications should focus on the cumulative impact of pressures. Additionally, habitat modelling results should be used to support the selection of the most appropriate combination of restoration measures, according to the WFD, to achieve good ecological status or potential of running waters. This thesis was carried out mainly within FAME (http://fame.boku.ac.at), a project under the fifth R&D Framework Programme of the European Commission. ; verf. und eingereicht von Andreas Helmut Melcher ; Zsfassung in dt. Sprache ; Wien, Univ. für Bodenkultur, Diss., 2009 ; OeBB ; (VLID)1931692

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  • Authors: Malte Meinshausen; Carl‐Friedrich Schleussner; Kathleen Beyer; G. E. Bodeker; +37 Authors

    Résumé. Dans chaque cycle d'évaluation du GIEC, une multitude de scénarios sont évalués, avec une portée et une importance différentes dans les différents groupes de travail et rapports spéciaux et leurs chapitres respectifs. Dans les rapports, l'ambition est d'intégrer les connaissances sur les futurs climatiques possibles dans les groupes de travail et les domaines de recherche scientifique sur la base d'un petit ensemble de « voies de cadrage », telles que les voies dites RCP du cinquième rapport d'évaluation du GIEC (AR5) et les scénarios SSP-RCP dans le sixième rapport d'évaluation (AR6). Cette perspective, initiée par les discussions lors de l'atelier du GIEC à Bangkok en avril 2023 sur « l'utilisation des scénarios dans le RE6 et les évaluations ultérieures », est destinée à servir d'une des contributions de la communauté pour mettre en évidence les besoins pour la prochaine génération de voies de cadrage qui est avancée sous l'égide du CMIP pour une utilisation dans le RE7 du GIEC. Ici, nous suggérons un certain nombre d'objectifs de recherche politique qu'un tel ensemble de voies d'encadrement devrait idéalement remplir, y compris les besoins d'atténuation pour atteindre les objectifs de l'Accord de Paris, les risques associés aux stratégies d'élimination du carbone, les conséquences du retard dans la mise en œuvre de cette atténuation, des conseils pour les besoins d'adaptation, les pertes et les dommages, et pour la réalisation de l'atténuation dans le contexte plus large des objectifs de développement sociétal. Sur la base de ce contexte, nous suggérons que la prochaine génération de scénarios climatiques pour les modèles du système terrestre évolue vers des « voies d'émission représentatives » (REP) et suggérons des catégories clés pour ces voies. Ces « voies d'encadrement » devraient répondre aux besoins les plus critiques en matière de politique d'atténuation et d'adaptation au cours des 5 à 10 prochaines années. À notre avis, les catégories les plus importantes sont celles qui sont pertinentes dans le contexte de l'objectif à long terme de l'Accord de Paris, en particulier une action immédiate (dépassement faible) de 1,5 °C et une action retardée (dépassement élevé) de 1,5 °C. Deux autres catégories clés sont une catégorie de trajectoire approximativement conforme aux objectifs politiques actuels (tels qu'exprimés d'ici 2023) à court et à long terme, et une catégorie d'émissions plus élevées qui est approximativement conforme aux « politiques actuelles » (telles qu'exprimées d'ici 2023). Nous plaidons également en faveur de la pertinence scientifique et politique de l'exploration de deux « mondes qui auraient pu l'être ». L'une de ces catégories a des trajectoires d'émissions élevées bien au-dessus de ce que les politiques actuelles impliquent, et l'autre a des trajectoires d'émissions très faibles qui supposent que les mesures d'atténuation mondiales visant à limiter le réchauffement à 1,5 °C sans dépassement ont commencé en 2015. Enfin, nous notons que la fourniture en temps opportun de nouvelles informations scientifiques sur les voies est essentielle pour éclairer l'élaboration et la mise en œuvre de la politique climatique. Pour le deuxième bilan mondial dans le cadre de l'Accord de Paris en 2028, et pour éclairer le développement ultérieur des contributions déterminées au niveau national (CDN) jusqu'en 2040, des contributions scientifiques sont nécessaires bien avant 2028. Ces besoins doivent être soigneusement pris en compte dans le calendrier d'élaboration des activités de modélisation communautaire, y compris celles menées dans le cadre du CMIP7. Resumen. En cada ciclo de Evaluación del IPCC, se evalúan una multitud de escenarios, con diferentes alcances y énfasis a lo largo de los diversos Grupos de Trabajo e Informes Especiales y sus respectivos capítulos. Dentro de los informes, la ambición es integrar el conocimiento sobre posibles futuros climáticos en los Grupos de Trabajo y los dominios de investigación científica basados en un pequeño conjunto de "vías de encuadre", como las llamadas vías RCP del Quinto Informe de Evaluación del IPCC (AR5) y los escenarios SSP-RCP en el Sexto Informe de Evaluación (AR6). Esta perspectiva, iniciada por las discusiones en el taller del IPCC en Bangkok en abril de 2023 sobre el "Uso de escenarios en el IE6 y evaluaciones posteriores", pretende servir como una de las contribuciones de la comunidad para resaltar las necesidades de la próxima generación de vías de encuadre que se está avanzando bajo el paraguas del CMIP para su uso en el IE7 del IPCC. Aquí sugerimos una serie de objetivos de investigación de políticas que ese conjunto de vías de encuadre debería cumplir idealmente, incluidas las necesidades de mitigación para cumplir los objetivos del Acuerdo de París, los riesgos asociados con las estrategias de eliminación de carbono, las consecuencias del retraso en la promulgación de esa mitigación, la orientación para las necesidades de adaptación, las pérdidas y los daños, y para lograr la mitigación en el contexto más amplio de los objetivos de desarrollo social. Con base en este contexto, sugerimos que la próxima generación de escenarios climáticos para los Modelos del Sistema Terrestre evolucione hacia 'Vías de Emisión Representativas' (REP) y sugerimos categorías clave para tales vías. Estas "vías de encuadre" deberían abordar las políticas de mitigación y las necesidades de adaptación más críticas en los próximos 5–10 años. En nuestra opinión, las categorías más importantes son las relevantes en el contexto del objetivo a largo plazo del Acuerdo de París, específicamente una vía de acción inmediata (sobrepaso bajo) de 1,5 °C y una vía de acción retardada (sobrepaso alto) de 1,5 °C. Otras dos categorías clave son una categoría de vía aproximadamente en línea con los objetivos políticos actuales (expresados para 2023) a corto y largo plazo, y una categoría de emisiones más altas que está aproximadamente en línea con las "políticas actuales" (expresadas para 2023). También defendemos la relevancia científica y política de explorar dos "mundos que podrían haber sido". Una de estas categorías tiene trayectorias de altas emisiones muy por encima de lo que implican las políticas actuales, y la otra tiene trayectorias de muy bajas emisiones que asumen que la acción de mitigación global en línea con la limitación del calentamiento a 1.5 ° C sin sobrepasar había comenzado en 2015. Finalmente, observamos que el suministro oportuno de nueva información científica sobre las vías es fundamental para informar el desarrollo y la implementación de la política climática. Para el segundo Balance Global bajo el Acuerdo de París en 2028, y para informar el desarrollo posterior de las Contribuciones Determinadas a Nivel Nacional (NDC) hasta 2040, se requieren insumos científicos mucho antes de 2028. Estas necesidades deben considerarse cuidadosamente en el cronograma de desarrollo de las actividades de modelado comunitario, incluidas las del CMIP7. Abstract. In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is to integrate knowledge on possible climate futures across the Working Groups and scientific research domains based on a small set of ‘framing pathways’, such as the so-called RCP pathways from the Fifth IPCC Assessment report (AR5) and the SSP-RCP scenarios in the Sixth Assessment Report (AR6). This perspective, initiated by discussions at the IPCC Bangkok workshop in April 2023 on the “Use of Scenarios in AR6 and Subsequent Assessments”, is intended to serve as one of the community contributions to highlight needs for the next generation of framing pathways that is being advanced under the CMIP umbrella for use in the IPCC AR7. Here we suggest a number of policy research objectives that such a set of framing pathways should ideally fulfil, including mitigation needs for meeting the Paris Agreement objectives, the risks associated with carbon removal strategies, the consequences of delay in enacting that mitigation, guidance for adaptation needs, loss and damage, and for achieving mitigation in the wider context of Societal Development goals. Based on this context we suggest that the next generation of climate scenarios for Earth System Models should evolve towards ‘Representative Emission Pathways’ (REPs) and suggest key categories for such pathways. These ‘framing pathways’ should address the most critical mitigation policy and adaptation needs over the next 5–10 years. In our view the most important categories are those relevant in the context of the Paris Agreement long-term goal, specifically an immediate action (low overshoot) 1.5 °C pathway, and a delayed action (high overshoot) 1.5 °C pathway. Two other key categories are a pathway category approximately in line with current (as expressed by 2023) near- and long-term policy objectives, and a higher emissions category that is approximately in line with “current policies” (as expressed by 2023). We also argue for the scientific and policy relevance in exploring two ‘worlds that could have been’. One of these categories has high emission trajectories well above what is implied by current policies, and the other has very low emission trajectories that assume that global mitigation action in line with limiting warming to 1.5 °C without overshoot had begun in 2015. Finally, we note that timely provision of new scientific information on pathways is critical to inform the development and implementation of climate policy. For the second Global Stocktake under the Paris Agreement in 2028, and to inform subsequent development of Nationally Determined Contributions (NDCs) up to 2040, scientific inputs are required well before 2028. These needs should be carefully considered in the development timeline of community modelling activities including those under CMIP7. الملخص. في كل دورة تقييم للهيئة الحكومية الدولية المعنية بتغير المناخ، يتم تقييم العديد من السيناريوهات، مع نطاق وتركيز مختلفين في مختلف مجموعات العمل والتقارير الخاصة وفصولها. ضمن التقارير، يتمثل الطموح في دمج المعرفة حول المستقبل المناخي المحتمل عبر مجموعات العمل ومجالات البحث العلمي بناءً على مجموعة صغيرة من "مسارات التأطير"، مثل ما يسمى مسارات RCP من تقرير التقييم الخامس للهيئة الحكومية الدولية المعنية بتغير المناخ (AR5) وسيناريوهات SSP - RCP في تقرير التقييم السادس (AR6). يهدف هذا المنظور، الذي بدأته المناقشات في ورشة عمل الفريق الحكومي الدولي المعني بتغير المناخ في بانكوك في أبريل 2023 حول "استخدام السيناريوهات في التقرير التقييمي السادس والتقييمات اللاحقة"، إلى أن يكون أحد مساهمات المجتمع لتسليط الضوء على احتياجات الجيل القادم من مسارات التأطير التي يتم تطويرها تحت مظلة الفريق الحكومي الدولي المعني بتغير المناخ لاستخدامها في التقرير التقييمي السابع للفريق الحكومي الدولي المعني بتغير المناخ. نقترح هنا عددًا من أهداف أبحاث السياسات التي يجب أن تلبيها مجموعة مسارات التأطير هذه بشكل مثالي، بما في ذلك احتياجات التخفيف لتحقيق أهداف اتفاق باريس، والمخاطر المرتبطة باستراتيجيات إزالة الكربون، وعواقب التأخير في سن هذا التخفيف، وتوجيه احتياجات التكيف، والخسائر والأضرار، ولتحقيق التخفيف في السياق الأوسع لأهداف التنمية المجتمعية. بناءً على هذا السياق، نقترح أن يتطور الجيل التالي من سيناريوهات المناخ لنماذج النظام الأرضي نحو "مسارات الانبعاثات التمثيلية" (REPs) واقتراح الفئات الرئيسية لمثل هذه المسارات. يجب أن تتناول "مسارات التأطير" هذه أهم سياسات التخفيف واحتياجات التكيف على مدى السنوات الخمس إلى العشر القادمة. من وجهة نظرنا، فإن أهم الفئات هي تلك ذات الصلة في سياق الهدف طويل الأجل لاتفاق باريس، وتحديداً مسار الإجراء الفوري (التجاوز المنخفض) 1.5 درجة مئوية، ومسار الإجراء المتأخر (التجاوز العالي) 1.5 درجة مئوية. هناك فئتان رئيسيتان أخريان هما فئة المسار التي تتماشى تقريبًا مع أهداف السياسة الحالية (كما هو معبر عنه بحلول عام 2023) على المدى القريب والطويل، وفئة الانبعاثات الأعلى التي تتماشى تقريبًا مع "السياسات الحالية" (كما هو معبر عنه بحلول عام 2023). كما ندعو إلى الأهمية العلمية والسياسية لاستكشاف "عالمين كان من الممكن أن يكونا". واحدة من هذه الفئات لديها مسارات انبعاثات عالية أعلى بكثير مما تنطوي عليه السياسات الحالية، والأخرى لديها مسارات انبعاثات منخفضة للغاية تفترض أن إجراءات التخفيف العالمية بما يتماشى مع الحد من الاحترار إلى 1.5 درجة مئوية دون تجاوز قد بدأت في عام 2015. أخيرًا، نلاحظ أن توفير المعلومات العلمية الجديدة في الوقت المناسب حول المسارات أمر بالغ الأهمية لإثراء تطوير وتنفيذ سياسة المناخ. بالنسبة للتقييم العالمي الثاني بموجب اتفاقية باريس في عام 2028، وللإبلاغ عن التطوير اللاحق للمساهمات المحددة وطنيًا (NDCs) حتى عام 2040، هناك حاجة إلى مدخلات علمية قبل عام 2028 بوقت طويل. يجب النظر في هذه الاحتياجات بعناية في الجدول الزمني لتطوير أنشطة النمذجة المجتمعية بما في ذلك تلك الموجودة في إطار CMIP7.

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  • Authors: Andrea K. Steiner; Ben Marzeion; Maeva Monier; Masayoshi Ishii; +34 Authors

    Project: GCOS Earth Heat Inventory - A study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory (EHI), and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period 1960-2018. Summary: ‘Heat stored in the Earth system: Where does the energy go?’ contains a consistent long-term Earth system heat inventory over the period 1960-2018. Human-induced atmospheric composition changes cause a radiative imbalance at the top-of-atmosphere which is driving global warming. This Earth Energy Imbalance (EEI) is the most critical number defining the prospects for continued global warming and climate change. Understanding the heat gain of the Earth system from this accumulated heat – and particularly how much and where the heat is distributed in the Earth system - is fundamental to understanding how this affects warming oceans, atmosphere and land, rising temperatures and sea level, and loss of grounded and floating ice, which are fundamental concerns for society. This dataset is based on a study under the Global Climate Observing System (GCOS) concerted international effort to update the Earth heat inventory, and presents an updated international assessment of ocean warming estimates, and new and updated estimates of heat gain in the atmosphere, cryosphere and land over the period 1960-2018. Changes in version 2: a) uncertainties have been added and updated in the netcdf file b) Ocean heat content > 2000m depth: update of one time series, and thus revised ensemble mean c) Atmospheric heat content: update of the time series as received by experts on the 29/05/2020 d) Available heat cyropshere: update of the time series as received by experts on the 27/05/2020. e) some attributes have been added for more details.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Ausems, Anne; Kuepper, Nadja; Archuby, Diego; Braun, Christina; +15 Authors

    This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Islas 25 de Mayo, Antarctica) over a forty year period (1978 - 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Data on adult abundance and estimated age categories (i.e., presence of foot spots; Quillfeldt et al. (2000, doi:10.1007/s003000000167) were collected at CA by using the same size mistnet every study year in the same location within the breeding colony. Adults were ringed with a metal leg ring, and their foot webs were checked for foot spots. This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)

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    PANGAEA
    Dataset . 2023
    Data sources: PANGAEA
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      PANGAEA
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  • Authors: Kulesz, Joanna; Rakusa-Suszczewski, Stanisław; Polska Akademia Nauk. Muzeum i Instytut Zoologii;

    Of the 168 fish species living in the Western Antarctic, 104 species belonging to 20 families occur in the South Shetland area: 39 species from 10 families have been found in the Admiralty Bay, 91 species (29 families) in theSouth Georgia area; the South Orkney region hosts 74 species from 18 families while the near Antarctic Peninsula shelf 71 species from 19 families. The respective figures were lower in the Southern Sandwich area, amounting to 44 species from 17 families. Endemic species amounted to 61.2%, the remaing 38.8% being cosmopolitan. The South Georgia area and the neighbouring Shag Rocks area differed also in the composition and biomass of several commercially harvested fish species, such as Pseudochaenichthys georgianus Norman, 1937, Notothenia rossii Richardson, 1844, Patagonotothen guntheri Norman, 1937 or Lepidonotothen squamifrons Günther, 1880. The South Shetland and Antarctic Peninsula regions were also distinguished from the South Georgia region by the presence of Champsocephalus gunnari Lönnberg, 1905 and above all, by the biomass of Gobionotothen gibberifrons Lönnberg, 1905, which is present in the former, but not found in the latter of the areas. ; Bibliogr. p. 228-229 ; P. 217-229 : ill. ; 25 cm ; Abstarct in Polish. Taxa in Latin. ; W niniejszym opracowaniu wykazano, że podział zaproponowany przez Andriasheva (1965) może być rozpatrywany jako słuszny lub nie w zależności od rozpatrywanych grup ichtiologicznych i analizowanych obszarów Zachodniej Antarktyki. Podział Zachodniej Antarktyki dokonany metodą analizy skupień na podstawie rozmieszczenia wszystkich gatunków endemicznych i gatunków z rodziny Nototheniidae,pokrywał się z podziałem zaproponowanym przez Andriasheva (1965). Inny podział uzyskanobiorąc pod uwagę gatunki z rodzin: Artedidraconidae, Myctophidae, Zoarcidae i Liparididae. Dendrogram oparty na rozmieszczeniu wszystkich gatunków ryb Zachodniej Antarktyki w poszczególnych warstwach wody, uwzględniający endemizm i kosmopolityzm, wskazał, żewiększość gatunków endemicznych ...

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    Authors: Ausems, Anne; Kuepper, Nadja; Archuby, Diego; Braun, Christina; +15 Authors

    This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Islas 25 de Mayo, Antarctica) over a forty year period (1978 – 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Chicks were measured regularly (varying intervals depending on the study) at both CA and HA. Chick tarsus was measured using callipers (vernier or digital depending on the study year) to the nearest 0.1 mm, chick wing length was measured using wing rulers to the nearest 1 mm, and chick body mass was measured using mechanical or digital scales depending on the study year to the nearest 0.1 g. Chick growth rates were calculated based on the linear growth period following Ausems et al. (2020, doi:10.1016/j.scitotenv.2020.138768). Chick food loads (g) were recorded at CA and determined based on changes in chick body mass on consecutive days (Gladbach et al. (2009, doi:10.1007/s00300-009-0628-z); Kuepper et al. (2018, doi:10.1016/j.cbpa.2018.06.018). This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)

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    PANGAEA
    Dataset . 2023
    Data sources: PANGAEA
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      PANGAEA
      Dataset . 2023
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