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Research data keyboard_double_arrow_right Dataset 2017Publisher:NERC Environmental Information Data Centre Reinsch, S.; Koller, E.; Sowerby, A.; De Dato, G.; Estiarte, M.; Guidolotti, G.; Kovács-Láng, E.; Kröel-Dula, G; Lellei-Kovács, E.; Larsen, K.S.; Liberati, D.; Ogaya, R; Peñuelas, J.; Ransijn, J.; Robinson, D.A.; Schmidt, I.K.; Smith, A.R.; Tietema, A.; Dukes, J.S.; Beier, C.; Emmett, B.A.;The data consists of annual measurements of standing aboveground plant biomass, annual aboveground net primary productivity and annual soil respiration between 1998 and 2012. Data were collected from seven European shrublands that were subject to the climate manipulations drought and warming. Sites were located in the United Kingdom (UK), the Netherlands (NL), Denmark ( two sites, DK-B and DK-M), Hungary (HU), Spain (SP) and Italy (IT). All field sites consisted of untreated control plots, plots where the plant canopy air is artificially warmed during night time hours, and plots where rainfall is excluded from the plots at least during the plants growing season. Standing aboveground plant biomass (grams biomass per square metre) was measured in two undisturbed areas within the plots using the pin-point method (UK, DK-M, DK-B), or along a transect (IT, SP, HU, NL). Aboveground net primary productivity was calculated from measurements of standing aboveground plant biomass estimates and litterfall measurements. Soil respiration was measured in pre-installed opaque soil collars bi-weekly, monthly, or in measurement campaigns (SP only). The datasets provided are the basis for the data analysis presented in Reinsch et al. (2017) Shrubland primary production and soil respiration diverge along European climate gradient. Scientific Reports 7:43952 https://doi.org/10.1038/srep43952 Standing biomass was measured using the non-destructive pin-point method to assess aboveground biomass. Measurements were conducted at the state of peak biomass specific for each site. Litterfall was measured annually using litterfall traps. Litter collected in the traps was dried and the weight was measured. Aboveground biomass productivity was estimated as the difference between the measured standing biomass in year x minus the standing biomass measured the previous year. Soil respiration was measured bi-weekly or monthly, or in campaigns (Spain only). It was measured on permanently installed soil collars in treatment plots. The Gaussen Index of Aridity (an index that combines information on rainfall and temperature) was calculated using mean annual precipitation, mean annual temperature. The reduction in precipitation and increase in temperature for each site was used to calculate the Gaussen Index for the climate treatments for each site. Data of standing biomass and soil respiration was provided by the site responsible. Data from all sites were collated into one data file for data analysis. A summary data set was combined with information on the Gaussen Index of Aridity Data were then exported from these Excel spreadsheet to .csv files for ingestion into the EIDC.
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For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2015Embargo end date: 29 Sep 2015 NetherlandsPublisher:Dryad Holmgren, M.; Lin, C.Y.; Murillo, J.E.; Nieuwenhuis, A.; Penninkhof, J.M.; Sanders, N.; van Bart, T.; van Veen, H.; Vasander, H.; Vollebregt, M.E.; Limpens, J.;doi: 10.5061/dryad.jf2n3
Figure 1data_Exp 2Figure 1 data: Condition of experimental seedlings in hummocks with contrasting shrub density and tree canopy in Experiment 2: No Trees - Low Shrub biomass (NTLS), No Trees - High Shrub biomass (NTHS), Present Trees - Low Shrub biomass (PTLS) and Present Trees - High shrub biomass (PTHS) during the warmest growing season (2011) and at the end of the experiment (2013). Seedling condition was defined as: healthy (< 50% of the needles turned yellow or brown) or unhealthy (> 50% of the needles turned yellow or brown). Seedlings were 1 month old at plantation time in the July 2010.Table 1_environmental conditions_Exp 1Table 1 data: Environmental conditions and vegetation characteristics in hummocks (circular and bands) and lawns for Experiment 1. Water table depth below surface is an average for the four growing seasons (2010-2013)Table 2_ photosynthesis data_Exp 1Table 2 photosynthesis data: Photosynthesis rates for experimental pine seedlings in hummocks (circular and bands) versus adjacent lawns for Experiment 1.Table 2_seedling responses_Exp 1Table 2 data: Responses of experimental pine seedlings in hummocks (circular and bands) versus adjacent lawns for Experiment 1 after 4 growing seasons. ST: Seeds inserted on top of moss; SB: Seeds inserted below moss; Small seedling (1 month old at plantation time); Large seedling (2 months old at plantation time). Emergence = % of planted seeds emerged after 1 year. Condition = % healthy seedlings. Stem growth corresponds to vertical stem growth for germinating (ST and SB) seedlings and new stem growth for older (small and large) seedlings.Table 3_regression seedling-environment_Exp 1Table 3 data for generalized linear models assessing the responses of experimental pine seedlings in hummocks (circular and bands) and adjacent lawns for Experiment 1 during the whole experimental period (2010-2013). ST: Seedlings from seeds inserted on top of moss; SB: Seedlings from seeds inserted below moss; Small seedling (1 month old at plantation time); Large seedling (2 months old at plantation time). Condition = % healthy seedlings. Growth = stem growth.Table 4_Environmental data_Exp 2Table 4: Environmental conditions in hummocks with contrasting shrub density and tree canopy in Experiment 2: No Trees - Low Shrub biomass (NTLS), No Trees - High Shrub biomass (NTHS), Present Trees - Low Shrub biomass (PTLS) and Present Trees - High shrub biomass (PTHS).Table 4 and Table S5a_seedling performance_Exp 2Table 4: Seedling performance in hummocks with contrasting shrub density and tree canopy in Experiment 2: No Trees - Low Shrub biomass (NTLS), No Trees - High Shrub biomass (NTHS), Present Trees - Low Shrub biomass (PTLS) and Present Trees - High shrub biomass (PTHS). Seedling emergence, condition and survival from seeds inserted below the moss (SB), and from small planted seedlings.Table S3_cox regression (survival analysis)_Exp 1Table S3: Data for Cox survival analysis for experimental pine seedlings in hummocks (circular and bands) versus adjacent lawns during 2010-2013. ST: Seedlings from seeds inserted on top of moss; SB: Seedlings from seeds inserted below moss; Small seedling (1 month old, 10 cm tall at plantation time); Large seedling (2 months old, 30 cm tall at plantation time).Table S4_ regression seedling-environment 2011_Exp 1Table S4: Data for generalized linear models assessing the responses of experimental pine seedlings in hummocks (circular and bands) and adjacent lawns for Experiment 1 in 2011. Small seedling (1 month old, 10 cm tall at plantation time); Large seedling (2 months old, 30 cm tall at plantation time). Condition = % healthy seedlings. Growth = stem growth. Boreal ecosystems are warming roughly twice as fast as the global average, resulting in woody expansion that could further speed up the climate warming. Boreal peatbogs are waterlogged systems that store more than 30% of the global soil carbon. Facilitative effects of shrubs and trees on the establishment of new individuals could increase tree cover with profound consequences for the structure and functioning of boreal peatbogs, carbon sequestration and climate. We conducted two field experiments in boreal peatbogs to assess the mechanisms that explain tree seedling recruitment and to estimate the strength of positive feedbacks between shrubs and trees. We planted seeds and seedlings of Pinus sylvestris in microsites with contrasting water-tables and woody cover and manipulated both shrub canopy and root competition. We monitored seedling emergence, growth and survival for up to four growing seasons and assessed how seedling responses related to abiotic and biotic conditions. We found that tree recruitment is more successful in drier topographical microsites with deeper water-tables. On these hummocks, shrubs have both positive and negative effects on tree seedling establishment. Shrub cover improved tree seedling condition, growth and survival during the warmest growing season. In turn, higher tree basal area correlates positively with soil nutrient availability, shrub biomass and abundance of tree juveniles. Synthesis. Our results suggest that shrubs facilitate tree colonization of peatbogs which further increases shrub growth. These facilitative effects seem to be stronger under warmer conditions suggesting that a higher frequency of warmer and dry summers may lead to stronger positive interactions between shrubs and trees that could eventually facilitate a shift from moss to tree-dominated systems.
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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.euResearch data keyboard_double_arrow_right Dataset 2017Embargo end date: 26 Sep 2017 SpainPublisher:Digital.CSIC Ramirez F; Rodriguez C; Seoane J; Figuerola J; Bustamante J;handle: 10261/155634
Global warming and direct anthropogenic impacts, such as water extraction, are largely affecting water budgets in Mediterranean wetlands, thereby increasing wetland salinities and isolation, and decreasing water depths and hydroperiods (duration of the inundation period). These wetland features are key elements structuring waterbird communities. However, the ultimate and net consequences of these dynamic conditions on waterbird assemblages are largely unknown. We combined a regular sampling on waterbird presence through the 2008 annual cycle with in-situ data on these relevant environmental predictors of waterbird distribution to model habitat selection for 69 individual species in a typical Mediterranean wetland network in south-western Spain. Species association with environmental features were subsequently used to predict changes in habitat suitability for each species under three climate change scenarios (encompassing changes in environment that ranged from 10% to 50% change as predicted by climatic models). Waterbirds distributed themselves unevenly throughout environmental gradients and water salinity was the most important gradient structuring the distribution of the community. Environmental suitability for the guilds of diving birds and vegetation gleaners will be reduced according to future climate scenarios, while most small wading birds will benefit from changing conditions. Resident species and those that breed in this wetland network will be also more impacted than those using this area for wintering or stopover. We provide here a tool that can be used in a horizon-scanning framework to identify emerging issues on waterbird conservation and to anticipate suitable management actions : Datasets as supporting information to article “How will climate change affect endangered Mediterranean waterbirds?” to be published in PLOS ONE. Address questions to Francisco Ramírez: ramirez@ub.edu
Digital.CSIC arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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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visibility 85visibility views 85 download downloads 13 Powered bymore_vert Digital.CSIC arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.euResearch data keyboard_double_arrow_right Dataset 2023Publisher:Zenodo Authors: Laurens P. Stoop;Energy Climate dataset consistent with ENTSO-E Pan-European Climatic Database (PECD 2021.3) in CSV and netCDF format TL;DR: this is a nationally aggregated hourly dataset for the capacity factors per unit installed capacity for storage hydropower plants and run-of-river hydropower plants in the European region. All the data is provided for 30 climatic years (1981-2010). Method Description The hydro inflow data is based on historical river runoff reanalysis data simulated by the E-HYPE model. E-HYPE is a pan-European model developed by The Swedish Meteorological and Hydrological Institute (SMHI), which describes hydrological processes including flow paths at the subbasin level. E-hype only provides the time series of daily river runoff entering the inlet of each European subbasin over 1981-2010. To match the operational resolution of the dispatch model, we linearly downscale these time series to hourly. By summing up runoff associated with the inlet subbasins of each country, we also obtain the country-level river runoff. The hydro inflow time series per country is defined as the normalized energy inflows (per unit installed capacity of hydropower) embodied in the country-level river runoff. A dispatch model can be used to decides whether the energy inflows are actually used for electricity generation, stored, or spilled (in case the storage reservoir is already full). Data coverage This dataset considers two types of hydropower plants, namely storage hydropower plant (STO) and run-of-river hydropower plant (ROR). Not all countries have both types of hydropower plants installed (see table). The countries and their acronyms for both technologies included in this dataset are: Country Run-of-River Storage Austria AT_ROR AT_STO Belgium BE_ROR BE_STO Bulgaria BG_ROR BG_STO Switzerland CH_ROR CH_STO Cyprus CZ_ROR CZ_STO Germany DE_ROR DE_STO Denmark DK_ROR Estonia EE_ROR Greece EL_ROR EL_STO Spain ES_ROR ES_STO Finland FI_ROR FI_STO France FR_ROR FR_STO Great Britain GB_ROR GB_STO Croatia HR_ROR HR_STO Hungary HU_ROR HU_STO Ireland IE_ROR IE_STO Italy IT_ROR IT_STO Luxembourg LU_ROR Latvia LV_ROR the Netherlands NL_ROR Norway NO_ROR NO_STO Poland PL_ROR PL_STO Portugal PT_ROR PT_STO Romania RO_ROR RO_STO Sweden SE_ROR SE_STO Slovenia SI_ROR SI_STO Slovakia SK_ROR SK_STO Data structure description The files is provided in CSV (.csv) format with a comma (,) as separator and double-quote mark (") as text indicator. The first row stores the column labels. The columns contain the following: first column (or A) contains the row number Label: unlabeled Contents: interger range [1,262968] second column (or B) contains the valid-time Label: T1h Contents represent time with text as [DD/MM/YYYY HH:MM]) column 3-52 (or C-AY) each contain the capacity factor for each valid combination of a country and hydropower plant type Label: XX_YYY the two letter country code (XX) and the hydropower plant type (YYY) acronym for storage hydropower plant (STO) and run-of-river hydropower plant (ROR) Contents represent the capacity factor as a floating value in the range [0,1], the decimal separator is a point (.). DISCLAIMER: the content of this dataset has been created with the greatest possible care. However, we invite to use the original data for critical applications and studies. The raw hydro data was generated as part of 'Evaluating sediment Delivery Impacts on Reservoirs in changing climaTe and society across scales and sectors (DIRT-X)', this project and therefor, Jing hu, received funding from the European Research Area Network (ERA-NET) under grant number 438.19.902. Laurens P. Stoop received funding from the Netherlands Organization for Scientific Research (NWO) under Grant No. 647.003.005.
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visibility 45visibility views 45 download downloads 41 Powered bymore_vert 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.euResearch data keyboard_double_arrow_right Dataset 2010Embargo end date: 12 Apr 2010 SpainPublisher:Digital.CSIC Authors: Beguería, Santiago; Vicente Serrano, Sergio M.;handle: 10261/23051
Format: raw binary. The raw binary archive is composed of 576 zipped files, corresponding to the SPEI index at time scales between 1 and 48 months for the whole World and divided by decades (except the last file, containing only data for the period 2001-2006). Each zipped file contains three files, one with the data itselt (.img), and two headers (.doc and .hdr). The information contained in the header files is equivalent, and allows direct access to the data using some widely used commercial programs. Naming convention: spei[tempscale]_[decade].zip, where [tempscale] is a number between 1 and 48 indicating the temporal scale of the index (months), and [decade] indicates the years of data contained in the file. Example: spei12_1910-1919.zip. All currently available gridded drought datasets at continental and global scales are based on either the PDSI or the sc-PDSI. A new global drought dataset based on the Standardised Precipitation-Evapotranspiration Index (SPEI) has been developed, which covers time scales from 1-48 months at a spatial resolution of 0.5°, and provides temporal coverage for the period 1901-2006. This dataset represents an improvement in spatial resolution and operative capability of previous gridded drought datasets based on the PDSI, and enables identification of various drought types. A monthly global dataset of a multiscalar drought index is presented and compared in terms of spatial and temporal variability with the existing continental and global drought datasets based on the Palmer drought severity index (PDSI, scPDSI). The new dataset is based on the standardized precipitation evapotranspiration index (SPEI). The index was obtained from the CRU TS3.0 data, covering time scales from 1 to 48 months for the period 1901-2006, and has a spatial resolution of 0.5°. The advantages of the new dataset are that: i) it improves the spatial resolution of the unique global drought dataset at a global scale; ii) it is spatially and temporally comparable to other datasets, given the probabilistic nature of the SPEI, and, in particular; iii) it enables identification of various drought types, given the multiscalar character of the SPEI. More details at: http://www.eead.csic.es/spei/spei.html A monthly global dataset of a multiscalar drought index is presented and compared in terms of spatial and temporal variability with the existing continental and global drought datasets based on the Palmer drought severity index (PDSI, scPDSI). The new dataset is based on the standardized precipitation evapotranspiration index (SPEI). The index was obtained from the CRU TS3.0 data, covering time scales from 1 to 48 months for the period 1901-2006, and has a spatial resolution of 0.5°. The advantages of the new dataset are that: i) it improves the spatial resolution of the unique global drought dataset at a global scale; ii) it is spatially and temporally comparable to other datasets, given the probabilistic nature of the SPEI, and, in particular; iii) it enables identification of various drought types, given the multiscalar character of the SPEI. More details at: http://www.eead.csic.es/spei/spei.html All currently available gridded drought datasets at continental and global scales are based on either the PDSI or the sc-PDSI. A new global drought dataset based on the Standardised Precipitation-Evapotranspiration Index (SPEI) has been developed, which covers time scales from 1-48 months at a spatial resolution of 0.5°, and provides temporal coverage for the period 1901-2006. This dataset represents an improvement in spatial resolution and operative capability of previous gridded drought datasets based on the PDSI, and enables identification of various drought types. The Global 0.5° gridded SPEI dataset is made available under the Open Database License. Any rights in individual contents of the database are licensed under the Database Contents License. Users of the dataset are free to share, create and adapt under the conditions of attribution and share-alike. Use of the newest version is recommended. Older versions are still available to allow replicability. The dataset is freely available on the web repository of the Spanish National Research Council (CSIC) in three different formats (NetCDF, binary raster, and plain text).
Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2010Data sources: Recolector de Ciencia Abierta, RECOLECTAadd 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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visibility 145visibility views 145 download downloads 296 Powered bymore_vert Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2010Data sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.euResearch data keyboard_double_arrow_right Dataset 2020Embargo end date: 16 Jun 2020Publisher:Dryad Funded by:EC | SOS.aquaterra, AKA | Global Water Scarcity Atl..., SNSF | Mountain water resources ... +1 projectsEC| SOS.aquaterra ,AKA| Global Water Scarcity Atlas: understanding resource pressure, causes, consequences, and opportunities (WASCO) ,SNSF| Mountain water resources under climate change: A comprehensive highland-lowland assessment ,AKA| Global green-blue water scarcity trajectories and measures for adaptation: linking the Holocene to the Anthropocene (SCART)Viviroli, Daniel; Kummu, Matti; Meybeck, Michel; Kallio, Marko; Wada, Yoshihide;Water resources index W quantifies the potential dependence of the world's lowland areas on water resources originating in mountain areas upstream. The data cover the timeframe from the 1960s (1961–1970) to the 2040s (2041–2050) in decadal steps. Data for projections from the 2010s onwards are available for three scenario pathways (SSP1-RCP4.5, SSP2-RCP6.0, SSP3-RCP6.0) and show median results from 5 CMIP5 GCMs (GFDL-ESM2M, HadGEM2-ES, IPSL-CM5A-LR, MIROC-ESM-CHEM, NorESM1‑M). The files are GeoTIFF formatted and in a regular raster of 5’×5’ (arc minutes in WGS 1984 coordinate system) The values of W can be classified using the following ranges: W ≤ -2 → Essential but vastly insufficient -2 < W < -1 → Essential but insufficient -1 ≤ W < 0 → Essential and sufficient W = 0 → No surplus from mountains 0 < W ≤ 1 → Supportive 1 < W < 2 → Minor W ≥ 2 → Negligible The values of W are rounded to four decimal places and limited to a range of -1110 to 9998. Values falling outside of that range are set to the nearest limit. he following flag values apply to W: -5555 indicates that there is no water balance surplus from the mountain area upstream, but a lowland water balance surplus; -6666 indicates that there is no water balance surplus from the mountain area upstream, and a lowland water balance deficit. Mountain areas and oceans are NODATA, large ice shields are omitted (Greenland: NODATA, Antarctica: not covered in extent). Mountain areas provide disproportionally high runoff in many parts of the world, and here we quantify for the first time their importance for water resources and food production from the viewpoint of the lowland areas downstream. The dataset maps the degree to which lowland areas potentially depend on runoff contributions from mountain areas (39% of land mass) between the 1960s and the 2040s.
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For further information contact us at helpdesk@openaire.eu2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
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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.euResearch data keyboard_double_arrow_right Dataset 2023Embargo end date: 19 Jul 2023 SpainPublisher:DIGITAL.CSIC Authors: Trullenque Blanco, Víctor; Beguería, Santiago; Vicente Serrano, Sergio M.; Peña-Angulo, Dhais; +1 AuthorsTrullenque Blanco, Víctor; Beguería, Santiago; Vicente Serrano, Sergio M.; Peña-Angulo, Dhais; González Hidalgo, José Carlos;handle: 10261/331384
[ES] La base de datos consta de dos archivos en formato .txt con las mallas de anomalías de precipitación (Standardized Precipitation Index) calculadas a 1 y 12 meses sobre el dominio peninsular español, cubriendo el periodo 12/2015_12/2020. Estas han sido calculadas a partir de los datos mensuales de la malla de precipitación MOPREDAScentury (https://doi.org/10.20350/digitalCSIC/15136). Además, se incluye un análisis descriptivo de los 40 episodios de sequía identificados según los criterios de intensidad de la sequía (SPI12 =20 % de la superficie de la malla). Para cada episodio se incluyen las series temporales del SPI01 y SPI12 promedio de toda la malla (expresadas en anomalías); el área de la malla en condiciones de sequía (SPI12 =< -0.84) (expresada en tanto por uno); los mapas integrales del episodio atendiendo a su duración (expresada en número de meses) e intensidad (promedio de las celdas en condiciones de sequía); y los mapas que representan la propagación espacial del episodio. Este registro se corresponde con la versión 1.0.0 del conjunto de datos. La base de datos se distribuye bajo una licencia abierta (Open Data Commons Attribution, ODC-By). [EN] The database consists of two files in .txt format with the precipitation anomaly grids (Standardized Precipitation Index) calculated at 1 and 12 months over the Spanish peninsular domain, covering the period 2015/12_2020/12. These have been calculated from the monthly data of the MOPREDAScentury precipitation grid (https://doi.org/10.20350/digitalCSIC/15136). In addition, a descriptive analysis of the 40 drought episodes identified according to the criteria of drought intensity (SPI12 =20 % of the grid area) is included. For each episode we include the time series of the SPI01 and SPI12 average of the whole grid (expressed in anomalies); the area of the grid under drought conditions (SPI12 =< -0.84) (expressed in percent per one); the integral maps of the episode according to its duration (expressed in number of months) and intensity (average of the cells under drought conditions); and the maps representing the spatial propagation of the episode. This record corresponds to version 1.0.0 of the dataset. The database is distributed under an open license (Open Data Commons Attribution, ODC-By). [ES] Malla SPI01: texto plano. 5219 filas -descontando el encabezado- y 1261 columnas -descontando las coordenadas X e Y-. Malla SPI12: texto plano. 5219 filas -descontando el encabezado- y 1250 columnas -descontando las coordenadas X e Y-. Archivos descriptivos de los episodios: mapas integrales de duración e intensidad, promedios de SPI’1 y SPI12 y mapas de la propagación espacial. [EN] SPI01 grid: plain text. 5219 rows (excluding the header) and 1261 columns (excluding the X and Y coordinates). SPI12 grid: plain text. 5219 rows (excluding the header) and 1250 columns (excluding the X and Y coordinates). Episode descriptive files: duration and intensity integral maps, SPI01 and SPI12 averages, and spatial propagation maps. Project PID2020-116860RB-C22: Extremos térmicos y pluviométricos en la España peninsular 1916-2020), funded by the Spanish Ministry of Science. Open Data Commons Attribution (ODC-By 1.0). Peer reviewed
Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2023 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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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visibility 176visibility views 176 download downloads 35 Powered bymore_vert Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2023 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.euResearch data keyboard_double_arrow_right Dataset 2021Publisher:Zenodo Authors: Sepehr Eslami; Jannis M. Hoch; Edwin H. Sutanudjaja; Hal E. Voepel;Projections of Sea Level Rise (SLR) under RCP 4.5 and RCP 8.5 (AR5) along the Mekong Coast, Published1 by the Ministry of Natural Resources and Environment (MONRE), Hanoi, Vietnam. Projections of Mekong River discharge during the dry season under RCP 4.5 and RCP 8.5 at Kratie, Cambodia. The data contains the cumulative, minimum and maximum dry season (January-1st to April-30th) discharge from 5 different climate models. PCR-GLOBWB2 was run at 5 arc-min spatial resolution and forced with the data based on output from five ISIMIP CMIP5 global climate models (HadGEM2-ES, GFDL-ESM2, IPSL-CM5A-LR, MIROC-ESM-CHEM, NorESM1-M). 1. Ministry of Natural Resources and Environment (MONRE), V. Climate change and sea level rise scenarios for Vietnam, Ministry of Natural Resources and Environment. (2016). 2. Sutanudjaja, E. H. et al. PCR-GLOBWB 2: a 5 arcmin global hydrological and water resources model. Geosci. Model Dev. 11, 2429–2453 (2018). {"references": ["Sutanudjaja et al. (2018)", "Ministry of Natural Resources and Environment (2016)"]}
ZENODO arrow_drop_down Smithsonian figshareDataset . 2021License: CC BYData 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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visibility 162visibility views 162 download downloads 75 Powered bymore_vert ZENODO arrow_drop_down Smithsonian figshareDataset . 2021License: CC BYData 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.euResearch data keyboard_double_arrow_right Dataset 2023Embargo end date: 15 Sep 2023Publisher:Dryad Carlson, Stephanie; Ruhí, Albert; Bogan, Michael; Wölfle Hazard, Cleo; Ayers, Jessica; Grantham, Theodore; Batalla, Ramon; Garcia, Celso;# Meta-data and results for our trend and breakpoint analyses [https://doi.org/10.5061/dryad.d7wm37q6m](https://doi.org/10.5061/dryad.d7wm37q6m) To document flow change, we compiled gauge records from five Mediterranean-climate regions of the world, including California (U.S.), Chile, South Africa, Spain, and Western Australia. For each gauge, we downloaded daily discharge records from public sources (see Open Research Statement and WebTable 1). Next, we limited our analysis to gauges located in Mediterranean-climates zones by retaining the subset of gauges located in Köppen-Geiger climate classes Csa, Csb, Csc (i.e., areas with a dry summer) using maps from Beck et al. 2018. Second, we identified gauges located in minimally disturbed basins. In the US and Australia, we used “reference” gauges identified by the USGS and Bureau of Meteorology, respectively. In South Africa, Chile, and Spain - where reference gauges have not been designated by agencies - we instead used aerial image analysis of upstream watershed conditions to identify basins with no evidence of significant reservoirs or large water infrastructure projects. We note that our determination of “reference-quality” gauges in Spain [excluding Catalonia] is consistent with Messager et al. 2021. Third, we identified gauges with daily data from 1980-2019 (i.e., most recent 40 years in common across the five regions) and no more than one year of missing data. Overall, we identified 158 gauges that met our criteria for inclusion (i.e., Mediterranean-climate, reference-quality, 40 years of data from 1980-2019, and no more than one year of missing data, see WebPanel 1 and WebFigure1). To reduce noise in zero-flow conditions, we defined “zero flows” as flows < 0.1 cfs. Finally, for our analysis of zero-flow trends, we used a liberal definition of “intermittent” and included the subset of streams with ≥ to 1 day/year of zero-flow on average, i.e., ≥ 40 days across the 40 year study, following Messager et al. 2021. Using the population of gauges that met our criteria for inclusion, we conducted trend analyses on daily discharge (for each gauge in our population) and on the annual number of zero-flow days (for the subset of intermittent gauges) across the time series by means of non-parametric Mann-Kendall tests (McLeod 2022). We next explored evidence of flow regime shifts. Specifically, we conducted a breakpoint analysis on the zero-flow days per year using the ‘strucchange’ package in R (Zeileis et al. 2002). We constrained the analysis to test for evidence of a maximum of one breakpoint (indicating a state shift). The meta-data used to run our trend and breakpoint analyses, and the results of those analyses, are presented in this file. **References** Beck HE, Zimmermann NE, McVicar TR, et al. 2018. Present and future Köppen-Geiger climate classification maps at 1-km resolution. Sci Data 5: 180214. McLeod, A.I. (2022). "Kendall: Kendall Rank Correlation and Mann-Kendall trend test". R package version 2.2.1. Available at: [http://cran.r-project.org/package=Kendall](http://cran.r-project.org/package=Kendall). Messager ML, Lehner B, Cockburn C, et al. 2021. Global prevalence of non-perennial rivers and streams. Nature 594: 391–7. Zeileis A, Leisch F, Hornik K, Kleiber C (2002). “strucchange: An R Package for Testing for Structural Change in Linear Regression Models.” Journal of Statistical Software, 7(2), 1–38. doi:10.18637/jss.v007.i02 ## Description of the data and file structure This data file includes columns for meta-data for our analyses ("region", "ID", "latitude", "longitude", "drainage\_area\_km2", "NA\_count"), as well as the results of our trend analyses ("discharge\_tau", "discharge\_p\_value", "zeros\_tau", "zeros\_p\_value") and the results of our breakpoint analyses ("total\_zero\_flow\_days", "BreakpointTime", "MeanZerosBefore", "MeanZerosAfter"). Further detail is provided below. * Region - specifies the Mediterranean-climate region from where the data originated (AU - Australia; CA - California, USA; CH - Chile; SA - South Africa; SP - Spain); * ID - regional ID associated with each gauge record; * latitude - latitude of gauge site; * longitude - longitude of gauge site; * drainage\_area\_km2 - drainage area upstream of each gauge, standardized to units of km2; * discharge\_tau - trend on daily discharge across the time series by means of non-parametric Mann-Kendall tests; * discharge\_p\_value - p-value associated with the trend analysis on daily discharge across the time series by means of non-parametric Mann-Kendall tests; * zeros\_tau - trend on number of annual zero-flow days across the time series by means of non-parametric Mann-Kendall tests; * zeros\_p\_value - p-value associated with the trend analysis on the annual number of zero-flow days across the time series by means of non-parametric Mann-Kendall tests; * NA\_count - a check that we included only gauge records with less than one year of missing data (i.e., for all gauge records included in our analyses, the count of missing data or "NAs" < 365); * total\_zero\_flow\_days - the total number of zero-flow days across the time series, used to identify the subset of "intermittent" and "perennial" gauges (we used a liberal definition of “intermittent” and included the subset of streams with ≥ to 1 day/year of zero-flow on average, i.e., ≥ 40 days across the 40 year study, following Messager et al. 2021); * BreakpointTime - we conducted a breakpoint analysis on the zero-flow days per year and constrained the analysis to test for evidence of a maximum of one breakpoint (indicating a state shift). For the subset of gauges showing evidence of a state shift, we report the year (ranging from the 1st to the 40th year across the time series) associated with the shift as the "BreakpointTime"; * MeanZerosBefore - For the subset of gauges showing evidence of a state shift, we further report the mean number of zero-flow days before the state shift; * MeanZerosAfter - For the subset of gauges showing evidence of a state shift, we further report the mean number of zero-flow days after the state shift. ## Sharing/Access information The gauge data sets utilized for this research were retrieved from the following sources: * Australia - Australian Government, Bureau of Meteorology, Water data online ([http://www.bom.gov.au/waterdata](http://www.bom.gov.au/waterdata)); * California, USA - USGS National Water Information System, USGS Water Data for California ([https://waterdata.usgs.gov/ca/nwis/](https://waterdata.usgs.gov/ca/nwis/)); * Chile - CAMELS-CL explorer (CR)2 ([https://camels.cr2.cl/](https://urldefense.com/v3/__https:/camels.cr2.cl/__;!!D9dNQwwGXtA!VUyljJtmgJsBqSnUMlOHRpds_SLFQHcPi6yYQCph6JPABduySWBpXgy_GBdu1mOihz82D--9A4bnOUyP_Jq79JQ3$)) from Alvarez-Garreton et al. 2018; * South Africa - Republic of South Africa, Department Water and Sanitation, Hydrological Services - Surface Water ([https://www.dws.gov.za/Hydrology/Verified/hymain.aspx](https://urldefense.com/v3/__https:/www.dws.gov.za/Hydrology/Verified/hymain.aspx__;!!D9dNQwwGXtA!VXV4ikJ5GqtpAPzYvj7lfVPS4xbEFbmw4ZNdI8Wtz5pCrLk7OYMIVdetRnWSyctJIh_1bydu4pggv63bc_fSHasLgQ$)); * Spain - Centro de Estudios Hidrográficos (CEDEX) ([https://ceh.cedex.es/anuarioaforos/default.asp](https://ceh.cedex.es/anuarioaforos/default.asp)) and Agència Catalana de l’Aigua: [https://aplicacions.aca.gencat.cat/sdim21/seleccioXarxes.do](https://urldefense.com/v3/__https:/aplicacions.aca.gencat.cat/sdim21/seleccioXarxes.do__;!!D9dNQwwGXtA!VUyljJtmgJsBqSnUMlOHRpds_SLFQHcPi6yYQCph6JPABduySWBpXgy_GBdu1mOihz82D--9A4bnOUyP_G5pTfaN$). ## To document flow change, we compiled gauge records from five Mediterranean-climate regions of the world, including California (U.S.), Chile, South Africa, Spain, and Western Australia. For each gauge, we downloaded daily discharge records from public sources. Next, we limited our analysis to gauges located in Mediterranean-climates zones by retaining the subset of gauges located in Köppen-Geiger climate classes Csa, Csb, Csc (i.e., areas with a dry summer) using maps from Beck et al. 2018. Second, we identified gauges located in minimally disturbed basins. In the US and Australia, we used “reference” gauges identified by the USGS and Bureau of Meteorology, respectively. In South Africa, Chile, and Spain - where reference gauges have not been designated by agencies – we instead used aerial image analysis of upstream watershed conditions to identify basins with no evidence of significant reservoirs or large water infrastructure projects. We note that our determination of “reference-quality” gauges in Spain [excluding Catalonia] is consistent with Messager et al. 2021. Third, we identified gauges with daily data from 1980-2019 (i.e., most recent 40 years in common across the five regions) and no more than one year of missing data. Overall, we identified 158 gauges that met our criteria for inclusion (i.e., Mediterranean-climate, reference-quality, 40 years of data from 1980-2019, and no more than one year of missing data, WebPanel 1, WebFigure1). To reduce noise in zero-flow conditions, we defined “zero flows” as flows < 0.1 cfs. Finally, for our analysis of zero-flow trends, we used a liberal definition of “intermittent” and included the subset of streams with ≥ to 1 day/year of zero-flow on average, i.e., ≥ 40 days across the 40 year study, following Messager et al. 2021. Using the population of gauges that met our criteria for inclusion, we conducted trend analyses on daily discharge (for each gauge in our population) and on the annual number of zero-flow days (for the subset of intermittent gauges) across the time series by means of non-parametric Mann-Kendall tests. We next explored evidence of flow regime shifts. Specifically, we conducted a breakpoint analysis on the zero-flow days per year using the ‘strucchange’ package in R. We constrained the analysis to test for evidence of a maximum of one breakpoint (indicating a state shift). Stream drying is happening globally, with significant ecological and social consequences. Most examples of stream drying come from systems influenced by dam operations or those with highly exploited aquifers. Stream drying is also thought to be happening due to climate change, but examples are surprisingly limited. We explored flow trends from the five Mediterranean-climate regions with a focus on unregulated streams with long-term gauge records. We found consistent evidence of decreasing discharge trends, increasing zero-flow days, and steeper downward discharge trends in smaller basins. Beyond directional trends, many systems recently shifted flow state, including some streams that shifted from perennial to intermittent flow states. Our analyses provide evidence of stream drying consistent with climate change, but also highlight knowledge gaps and challenges in empirically and statistically documenting flow regime shifts. We discuss the myriad consequences of losing flow and propose strategies for improving detection and adapting to flow change.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Bachelor thesis 2018 SpainAuthors: Zabala Prieto, Mikele;[EN] Abiotic stresses such as drought and salinity, not only compromise crop quality and limit yield, but also limit the geographical range in which crops can be arisen. Nowadays, yield loss due to the salinization of the soils has become a major concern all over the world, as the 7% of the world´s land surface is saline. As a consequence of global climate change, the percent of saltaffected land surface has increased in the last 45 years. Thereby, climate change and its effect on soil salinization and drought induction have aroused on an approach to mitigate this problem. A solution could be the use of halophytic plant species, which are able to tolerate high salt concentrations in soil such as Chenopodium quinoa. For that reason, the aim of this study is to determine and study the response of the nitrogen metabolism to drought and high salt stresses in quinoa plants, comparing the effect of drought and severe salinity stresses in these plants and determining the salt concentration in which quinoa plants suffer no stress. So, plants were exposed to drought, 0, 60, 120, 240 and 500 mM of NaCl. Optimal growth was achieved under 0, 60 and 120 mM NaCl and from 240 mM NaCl on it decreased significantly. However, the total biomass was not equally distributed on plant organs, as root:shoot ratio was only significantly bigger under drought conditions. A higher nitrate content was favoured under drought treatment, but not in any salinity treatments, where gradual decrease in nitrate concentration was observed as salt concentration increased. A decrease in NR activity was observed in drought and 240-500 mM NaCl, but remained in optimal values for 0-120 mM NaCl. However, a descent for drought treated plants was observed in the NR activation state. As this was not observed for 500 mM NaCl, where the highest activation levels where measured, negative effects on protein biosynthesis or degradation due to Na+ and Cltoxicity could be suggested. Even though nitrogen assimilation was reduced in quinoa plants, the GS and GDH activities were maintained in all treatments. High ammonium production in leaves by photorespiration and phenolic compound synthesis could be a suggested explanation for the high GS and GDH activities in quinoa leaves. Proteins levels were distinct under drought and salinity. Whereas drought maintained high protein levels in leaves, plants exposed to salinity showed the opposite, leading to hypothesize that proteins and aminoacids could be used to fight osmotic adjustment induced by the studied stresses. Quinoa plants seemed to tolerate NaCl concentrations up to 120 mM, in which stress did not affect the plant growth and nitrogen metabolism development. The plasticity of the plants to tolerate high salt concentrations could have allowed them a more efficient response under the presence of high salinity, ensuring a better performance of the nitrogen metabolism. [EUS] Estres abiotikoek, hala nola, lehortea eta gazitasuna, ez dute soilik uzten kalitatea eta kantitatea baldintzatzen baizik eta hauen esparru geografikoaren mugatzaileak ere izan daitezke. Gaur egun, gazitasunak eragiten duen etekin galera berebiziko garrantzia hartu duen kezka da, izan ere, munduko lurrazaleko %7-a gazia da. Hortaz, aldaketa klimatikoak eta honek duen efektua lurzoruaren gazitze eta lehortzean, arazo honen aurrean konponbide bat bilatzekotan, ikerketa arlo garrantzitsua bilakatu da. Hots, gazitasun eta lehorteak eragindako efektu negatiboei aurre egiteko, gazitasunarekiko tolerantea den Chenopodium quinoa-ren erabilpena proposatzen da labore landare ordezko bezala. Hori dela eta, ikerketa honen helburua quinoa landareek lehorte eta gazitasunaren aurrean duten nitrogeno metabolismoaren erantzuna aztertzea da, lehorte eta gazitasun altuek induzitzen duten erantzunaren konparaketa eginez, halaber, landareek tolera dezaketen gazitasun kontzentraziorik altuena aurkitzea zeinetan estresik ez den antzematen. Beraz, landareak lehorte, 0, 60, 120, 240 eta 500 mM NaCl baldintzetan hazi ziren. Hazkuntza optimoa 0, 60 eta 120 mM NaCl tratamenduetan lortu zen , 240 mM NaCl kontzentraziotik gorako tratamenduentan ostera, murriztu. Hala ere, biomasaren banaketa ez zen berdina izan sustrai zein zurtoin eta hostoetan. Lehortearekin trataturiko landareek sustraietako biomasa altuago bat erakutsi zuten, 500 mM NaCl tratamenduan ikusi ez zena, alegia. Nitrato edukia mantendu egin zen lehortearekin trataturiko landareetan, hala ere, beherakada graduala eman zen gazitasun kontzentrazioa igo ahala. Honekin loturik, NR aktibitateak modu esangarrian behera egin zuela lehorte, 240 eta 500 mM NaCl tratamenduetan behatu zen, baina honen mantentzea eman zen 0- 120 mM NaCl tratamenduetan. Hortaz, NR-aren aktibatze egoera soilik murriztu zen gazitasun tratamenduak jasotako landareetan, minimoak 500 mM NaCl landareetan izanik. Honen erantzule, Na+ eta Cl- ioiek eragindako toxizitateak entzimaren integritate morfologiko zein funtzionalean duten eragin negatiboa izan daitekeela proposatzen da. Nahiz eta nitrogenoaren asimilazioan murrizte metabolikoa jasan, GS eta GDH aktibitatean mantenduak izan dira quinoa landareetan aplikaturiko tratamendu guztietan. Bai lehorte eta gazitasun egoerek, landareek sufritu zezaketen estres osmotikoa dela eta, fotoarnasketa eta konposatu fenolikoen sintesia faboratuko lukete landareetan, amonio kontzentrazio altuak sortaraziz. Proteinak, nitrogeno metabolismoaren azken produktua, maila ezberdinak erakutsi zituen aplikaturiko tratamenduetan. Zenbat eta gazitasun maila altuagoa aplikatu tratamenduetan, proteina kantitateen beheraka gradual negatiboagoa erakusten zuten. Lehortean, ostera, proteina maila altuak mantenduak izan ziren. Kasurik kasu, proteinen erabilpen ezberdinak estres osmotikoari aurre egiteko mekanismo ezberdin posible moduan interpretatuak izan daitezke. Quinoa landareek, tolerantzia maila altua erakutsi dute 120 mM NaCl-ko kontzentrazioetaraino, non estresik ez dute pairatzen. Estres hauen aurrean, landare hauek duten plastikotasun maila altua dela eta, nitrogeno metabolismoan erantzun eraginkorrago bat izatea baimendu die.
ARCHIVO DIGITAL PARA... arrow_drop_down ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONBachelor thesis . 2018Data sources: ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONadd 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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more_vert ARCHIVO DIGITAL PARA... arrow_drop_down ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONBachelor thesis . 2018Data sources: ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONadd 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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Research data keyboard_double_arrow_right Dataset 2017Publisher:NERC Environmental Information Data Centre Reinsch, S.; Koller, E.; Sowerby, A.; De Dato, G.; Estiarte, M.; Guidolotti, G.; Kovács-Láng, E.; Kröel-Dula, G; Lellei-Kovács, E.; Larsen, K.S.; Liberati, D.; Ogaya, R; Peñuelas, J.; Ransijn, J.; Robinson, D.A.; Schmidt, I.K.; Smith, A.R.; Tietema, A.; Dukes, J.S.; Beier, C.; Emmett, B.A.;The data consists of annual measurements of standing aboveground plant biomass, annual aboveground net primary productivity and annual soil respiration between 1998 and 2012. Data were collected from seven European shrublands that were subject to the climate manipulations drought and warming. Sites were located in the United Kingdom (UK), the Netherlands (NL), Denmark ( two sites, DK-B and DK-M), Hungary (HU), Spain (SP) and Italy (IT). All field sites consisted of untreated control plots, plots where the plant canopy air is artificially warmed during night time hours, and plots where rainfall is excluded from the plots at least during the plants growing season. Standing aboveground plant biomass (grams biomass per square metre) was measured in two undisturbed areas within the plots using the pin-point method (UK, DK-M, DK-B), or along a transect (IT, SP, HU, NL). Aboveground net primary productivity was calculated from measurements of standing aboveground plant biomass estimates and litterfall measurements. Soil respiration was measured in pre-installed opaque soil collars bi-weekly, monthly, or in measurement campaigns (SP only). The datasets provided are the basis for the data analysis presented in Reinsch et al. (2017) Shrubland primary production and soil respiration diverge along European climate gradient. Scientific Reports 7:43952 https://doi.org/10.1038/srep43952 Standing biomass was measured using the non-destructive pin-point method to assess aboveground biomass. Measurements were conducted at the state of peak biomass specific for each site. Litterfall was measured annually using litterfall traps. Litter collected in the traps was dried and the weight was measured. Aboveground biomass productivity was estimated as the difference between the measured standing biomass in year x minus the standing biomass measured the previous year. Soil respiration was measured bi-weekly or monthly, or in campaigns (Spain only). It was measured on permanently installed soil collars in treatment plots. The Gaussen Index of Aridity (an index that combines information on rainfall and temperature) was calculated using mean annual precipitation, mean annual temperature. The reduction in precipitation and increase in temperature for each site was used to calculate the Gaussen Index for the climate treatments for each site. Data of standing biomass and soil respiration was provided by the site responsible. Data from all sites were collated into one data file for data analysis. A summary data set was combined with information on the Gaussen Index of Aridity Data were then exported from these Excel spreadsheet to .csv files for ingestion into the EIDC.
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more_vert https://dx.doi.org/1... arrow_drop_down 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.euResearch data keyboard_double_arrow_right Dataset 2015Embargo end date: 29 Sep 2015 NetherlandsPublisher:Dryad Holmgren, M.; Lin, C.Y.; Murillo, J.E.; Nieuwenhuis, A.; Penninkhof, J.M.; Sanders, N.; van Bart, T.; van Veen, H.; Vasander, H.; Vollebregt, M.E.; Limpens, J.;doi: 10.5061/dryad.jf2n3
Figure 1data_Exp 2Figure 1 data: Condition of experimental seedlings in hummocks with contrasting shrub density and tree canopy in Experiment 2: No Trees - Low Shrub biomass (NTLS), No Trees - High Shrub biomass (NTHS), Present Trees - Low Shrub biomass (PTLS) and Present Trees - High shrub biomass (PTHS) during the warmest growing season (2011) and at the end of the experiment (2013). Seedling condition was defined as: healthy (< 50% of the needles turned yellow or brown) or unhealthy (> 50% of the needles turned yellow or brown). Seedlings were 1 month old at plantation time in the July 2010.Table 1_environmental conditions_Exp 1Table 1 data: Environmental conditions and vegetation characteristics in hummocks (circular and bands) and lawns for Experiment 1. Water table depth below surface is an average for the four growing seasons (2010-2013)Table 2_ photosynthesis data_Exp 1Table 2 photosynthesis data: Photosynthesis rates for experimental pine seedlings in hummocks (circular and bands) versus adjacent lawns for Experiment 1.Table 2_seedling responses_Exp 1Table 2 data: Responses of experimental pine seedlings in hummocks (circular and bands) versus adjacent lawns for Experiment 1 after 4 growing seasons. ST: Seeds inserted on top of moss; SB: Seeds inserted below moss; Small seedling (1 month old at plantation time); Large seedling (2 months old at plantation time). Emergence = % of planted seeds emerged after 1 year. Condition = % healthy seedlings. Stem growth corresponds to vertical stem growth for germinating (ST and SB) seedlings and new stem growth for older (small and large) seedlings.Table 3_regression seedling-environment_Exp 1Table 3 data for generalized linear models assessing the responses of experimental pine seedlings in hummocks (circular and bands) and adjacent lawns for Experiment 1 during the whole experimental period (2010-2013). ST: Seedlings from seeds inserted on top of moss; SB: Seedlings from seeds inserted below moss; Small seedling (1 month old at plantation time); Large seedling (2 months old at plantation time). Condition = % healthy seedlings. Growth = stem growth.Table 4_Environmental data_Exp 2Table 4: Environmental conditions in hummocks with contrasting shrub density and tree canopy in Experiment 2: No Trees - Low Shrub biomass (NTLS), No Trees - High Shrub biomass (NTHS), Present Trees - Low Shrub biomass (PTLS) and Present Trees - High shrub biomass (PTHS).Table 4 and Table S5a_seedling performance_Exp 2Table 4: Seedling performance in hummocks with contrasting shrub density and tree canopy in Experiment 2: No Trees - Low Shrub biomass (NTLS), No Trees - High Shrub biomass (NTHS), Present Trees - Low Shrub biomass (PTLS) and Present Trees - High shrub biomass (PTHS). Seedling emergence, condition and survival from seeds inserted below the moss (SB), and from small planted seedlings.Table S3_cox regression (survival analysis)_Exp 1Table S3: Data for Cox survival analysis for experimental pine seedlings in hummocks (circular and bands) versus adjacent lawns during 2010-2013. ST: Seedlings from seeds inserted on top of moss; SB: Seedlings from seeds inserted below moss; Small seedling (1 month old, 10 cm tall at plantation time); Large seedling (2 months old, 30 cm tall at plantation time).Table S4_ regression seedling-environment 2011_Exp 1Table S4: Data for generalized linear models assessing the responses of experimental pine seedlings in hummocks (circular and bands) and adjacent lawns for Experiment 1 in 2011. Small seedling (1 month old, 10 cm tall at plantation time); Large seedling (2 months old, 30 cm tall at plantation time). Condition = % healthy seedlings. Growth = stem growth. Boreal ecosystems are warming roughly twice as fast as the global average, resulting in woody expansion that could further speed up the climate warming. Boreal peatbogs are waterlogged systems that store more than 30% of the global soil carbon. Facilitative effects of shrubs and trees on the establishment of new individuals could increase tree cover with profound consequences for the structure and functioning of boreal peatbogs, carbon sequestration and climate. We conducted two field experiments in boreal peatbogs to assess the mechanisms that explain tree seedling recruitment and to estimate the strength of positive feedbacks between shrubs and trees. We planted seeds and seedlings of Pinus sylvestris in microsites with contrasting water-tables and woody cover and manipulated both shrub canopy and root competition. We monitored seedling emergence, growth and survival for up to four growing seasons and assessed how seedling responses related to abiotic and biotic conditions. We found that tree recruitment is more successful in drier topographical microsites with deeper water-tables. On these hummocks, shrubs have both positive and negative effects on tree seedling establishment. Shrub cover improved tree seedling condition, growth and survival during the warmest growing season. In turn, higher tree basal area correlates positively with soil nutrient availability, shrub biomass and abundance of tree juveniles. Synthesis. Our results suggest that shrubs facilitate tree colonization of peatbogs which further increases shrub growth. These facilitative effects seem to be stronger under warmer conditions suggesting that a higher frequency of warmer and dry summers may lead to stronger positive interactions between shrubs and trees that could eventually facilitate a shift from moss to tree-dominated systems.
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For further information contact us at helpdesk@openaire.eu2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
visibility 26visibility views 26 download downloads 11 Powered bymore_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.
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For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2017Embargo end date: 26 Sep 2017 SpainPublisher:Digital.CSIC Ramirez F; Rodriguez C; Seoane J; Figuerola J; Bustamante J;handle: 10261/155634
Global warming and direct anthropogenic impacts, such as water extraction, are largely affecting water budgets in Mediterranean wetlands, thereby increasing wetland salinities and isolation, and decreasing water depths and hydroperiods (duration of the inundation period). These wetland features are key elements structuring waterbird communities. However, the ultimate and net consequences of these dynamic conditions on waterbird assemblages are largely unknown. We combined a regular sampling on waterbird presence through the 2008 annual cycle with in-situ data on these relevant environmental predictors of waterbird distribution to model habitat selection for 69 individual species in a typical Mediterranean wetland network in south-western Spain. Species association with environmental features were subsequently used to predict changes in habitat suitability for each species under three climate change scenarios (encompassing changes in environment that ranged from 10% to 50% change as predicted by climatic models). Waterbirds distributed themselves unevenly throughout environmental gradients and water salinity was the most important gradient structuring the distribution of the community. Environmental suitability for the guilds of diving birds and vegetation gleaners will be reduced according to future climate scenarios, while most small wading birds will benefit from changing conditions. Resident species and those that breed in this wetland network will be also more impacted than those using this area for wintering or stopover. We provide here a tool that can be used in a horizon-scanning framework to identify emerging issues on waterbird conservation and to anticipate suitable management actions : Datasets as supporting information to article “How will climate change affect endangered Mediterranean waterbirds?” to be published in PLOS ONE. Address questions to Francisco Ramírez: ramirez@ub.edu
Digital.CSIC arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
visibility 85visibility views 85 download downloads 13 Powered bymore_vert Digital.CSIC arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.euResearch data keyboard_double_arrow_right Dataset 2023Publisher:Zenodo Authors: Laurens P. Stoop;Energy Climate dataset consistent with ENTSO-E Pan-European Climatic Database (PECD 2021.3) in CSV and netCDF format TL;DR: this is a nationally aggregated hourly dataset for the capacity factors per unit installed capacity for storage hydropower plants and run-of-river hydropower plants in the European region. All the data is provided for 30 climatic years (1981-2010). Method Description The hydro inflow data is based on historical river runoff reanalysis data simulated by the E-HYPE model. E-HYPE is a pan-European model developed by The Swedish Meteorological and Hydrological Institute (SMHI), which describes hydrological processes including flow paths at the subbasin level. E-hype only provides the time series of daily river runoff entering the inlet of each European subbasin over 1981-2010. To match the operational resolution of the dispatch model, we linearly downscale these time series to hourly. By summing up runoff associated with the inlet subbasins of each country, we also obtain the country-level river runoff. The hydro inflow time series per country is defined as the normalized energy inflows (per unit installed capacity of hydropower) embodied in the country-level river runoff. A dispatch model can be used to decides whether the energy inflows are actually used for electricity generation, stored, or spilled (in case the storage reservoir is already full). Data coverage This dataset considers two types of hydropower plants, namely storage hydropower plant (STO) and run-of-river hydropower plant (ROR). Not all countries have both types of hydropower plants installed (see table). The countries and their acronyms for both technologies included in this dataset are: Country Run-of-River Storage Austria AT_ROR AT_STO Belgium BE_ROR BE_STO Bulgaria BG_ROR BG_STO Switzerland CH_ROR CH_STO Cyprus CZ_ROR CZ_STO Germany DE_ROR DE_STO Denmark DK_ROR Estonia EE_ROR Greece EL_ROR EL_STO Spain ES_ROR ES_STO Finland FI_ROR FI_STO France FR_ROR FR_STO Great Britain GB_ROR GB_STO Croatia HR_ROR HR_STO Hungary HU_ROR HU_STO Ireland IE_ROR IE_STO Italy IT_ROR IT_STO Luxembourg LU_ROR Latvia LV_ROR the Netherlands NL_ROR Norway NO_ROR NO_STO Poland PL_ROR PL_STO Portugal PT_ROR PT_STO Romania RO_ROR RO_STO Sweden SE_ROR SE_STO Slovenia SI_ROR SI_STO Slovakia SK_ROR SK_STO Data structure description The files is provided in CSV (.csv) format with a comma (,) as separator and double-quote mark (") as text indicator. The first row stores the column labels. The columns contain the following: first column (or A) contains the row number Label: unlabeled Contents: interger range [1,262968] second column (or B) contains the valid-time Label: T1h Contents represent time with text as [DD/MM/YYYY HH:MM]) column 3-52 (or C-AY) each contain the capacity factor for each valid combination of a country and hydropower plant type Label: XX_YYY the two letter country code (XX) and the hydropower plant type (YYY) acronym for storage hydropower plant (STO) and run-of-river hydropower plant (ROR) Contents represent the capacity factor as a floating value in the range [0,1], the decimal separator is a point (.). DISCLAIMER: the content of this dataset has been created with the greatest possible care. However, we invite to use the original data for critical applications and studies. The raw hydro data was generated as part of 'Evaluating sediment Delivery Impacts on Reservoirs in changing climaTe and society across scales and sectors (DIRT-X)', this project and therefor, Jing hu, received funding from the European Research Area Network (ERA-NET) under grant number 438.19.902. Laurens P. Stoop received funding from the Netherlands Organization for Scientific Research (NWO) under Grant No. 647.003.005.
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visibility 45visibility views 45 download downloads 41 Powered bymore_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.
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For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2010Embargo end date: 12 Apr 2010 SpainPublisher:Digital.CSIC Authors: Beguería, Santiago; Vicente Serrano, Sergio M.;handle: 10261/23051
Format: raw binary. The raw binary archive is composed of 576 zipped files, corresponding to the SPEI index at time scales between 1 and 48 months for the whole World and divided by decades (except the last file, containing only data for the period 2001-2006). Each zipped file contains three files, one with the data itselt (.img), and two headers (.doc and .hdr). The information contained in the header files is equivalent, and allows direct access to the data using some widely used commercial programs. Naming convention: spei[tempscale]_[decade].zip, where [tempscale] is a number between 1 and 48 indicating the temporal scale of the index (months), and [decade] indicates the years of data contained in the file. Example: spei12_1910-1919.zip. All currently available gridded drought datasets at continental and global scales are based on either the PDSI or the sc-PDSI. A new global drought dataset based on the Standardised Precipitation-Evapotranspiration Index (SPEI) has been developed, which covers time scales from 1-48 months at a spatial resolution of 0.5°, and provides temporal coverage for the period 1901-2006. This dataset represents an improvement in spatial resolution and operative capability of previous gridded drought datasets based on the PDSI, and enables identification of various drought types. A monthly global dataset of a multiscalar drought index is presented and compared in terms of spatial and temporal variability with the existing continental and global drought datasets based on the Palmer drought severity index (PDSI, scPDSI). The new dataset is based on the standardized precipitation evapotranspiration index (SPEI). The index was obtained from the CRU TS3.0 data, covering time scales from 1 to 48 months for the period 1901-2006, and has a spatial resolution of 0.5°. The advantages of the new dataset are that: i) it improves the spatial resolution of the unique global drought dataset at a global scale; ii) it is spatially and temporally comparable to other datasets, given the probabilistic nature of the SPEI, and, in particular; iii) it enables identification of various drought types, given the multiscalar character of the SPEI. More details at: http://www.eead.csic.es/spei/spei.html A monthly global dataset of a multiscalar drought index is presented and compared in terms of spatial and temporal variability with the existing continental and global drought datasets based on the Palmer drought severity index (PDSI, scPDSI). The new dataset is based on the standardized precipitation evapotranspiration index (SPEI). The index was obtained from the CRU TS3.0 data, covering time scales from 1 to 48 months for the period 1901-2006, and has a spatial resolution of 0.5°. The advantages of the new dataset are that: i) it improves the spatial resolution of the unique global drought dataset at a global scale; ii) it is spatially and temporally comparable to other datasets, given the probabilistic nature of the SPEI, and, in particular; iii) it enables identification of various drought types, given the multiscalar character of the SPEI. More details at: http://www.eead.csic.es/spei/spei.html All currently available gridded drought datasets at continental and global scales are based on either the PDSI or the sc-PDSI. A new global drought dataset based on the Standardised Precipitation-Evapotranspiration Index (SPEI) has been developed, which covers time scales from 1-48 months at a spatial resolution of 0.5°, and provides temporal coverage for the period 1901-2006. This dataset represents an improvement in spatial resolution and operative capability of previous gridded drought datasets based on the PDSI, and enables identification of various drought types. The Global 0.5° gridded SPEI dataset is made available under the Open Database License. Any rights in individual contents of the database are licensed under the Database Contents License. Users of the dataset are free to share, create and adapt under the conditions of attribution and share-alike. Use of the newest version is recommended. Older versions are still available to allow replicability. The dataset is freely available on the web repository of the Spanish National Research Council (CSIC) in three different formats (NetCDF, binary raster, and plain text).
Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2010Data sources: Recolector de Ciencia Abierta, RECOLECTAadd 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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visibility 145visibility views 145 download downloads 296 Powered bymore_vert Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2010Data sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.euResearch data keyboard_double_arrow_right Dataset 2020Embargo end date: 16 Jun 2020Publisher:Dryad Funded by:EC | SOS.aquaterra, AKA | Global Water Scarcity Atl..., SNSF | Mountain water resources ... +1 projectsEC| SOS.aquaterra ,AKA| Global Water Scarcity Atlas: understanding resource pressure, causes, consequences, and opportunities (WASCO) ,SNSF| Mountain water resources under climate change: A comprehensive highland-lowland assessment ,AKA| Global green-blue water scarcity trajectories and measures for adaptation: linking the Holocene to the Anthropocene (SCART)Viviroli, Daniel; Kummu, Matti; Meybeck, Michel; Kallio, Marko; Wada, Yoshihide;Water resources index W quantifies the potential dependence of the world's lowland areas on water resources originating in mountain areas upstream. The data cover the timeframe from the 1960s (1961–1970) to the 2040s (2041–2050) in decadal steps. Data for projections from the 2010s onwards are available for three scenario pathways (SSP1-RCP4.5, SSP2-RCP6.0, SSP3-RCP6.0) and show median results from 5 CMIP5 GCMs (GFDL-ESM2M, HadGEM2-ES, IPSL-CM5A-LR, MIROC-ESM-CHEM, NorESM1‑M). The files are GeoTIFF formatted and in a regular raster of 5’×5’ (arc minutes in WGS 1984 coordinate system) The values of W can be classified using the following ranges: W ≤ -2 → Essential but vastly insufficient -2 < W < -1 → Essential but insufficient -1 ≤ W < 0 → Essential and sufficient W = 0 → No surplus from mountains 0 < W ≤ 1 → Supportive 1 < W < 2 → Minor W ≥ 2 → Negligible The values of W are rounded to four decimal places and limited to a range of -1110 to 9998. Values falling outside of that range are set to the nearest limit. he following flag values apply to W: -5555 indicates that there is no water balance surplus from the mountain area upstream, but a lowland water balance surplus; -6666 indicates that there is no water balance surplus from the mountain area upstream, and a lowland water balance deficit. Mountain areas and oceans are NODATA, large ice shields are omitted (Greenland: NODATA, Antarctica: not covered in extent). Mountain areas provide disproportionally high runoff in many parts of the world, and here we quantify for the first time their importance for water resources and food production from the viewpoint of the lowland areas downstream. The dataset maps the degree to which lowland areas potentially depend on runoff contributions from mountain areas (39% of land mass) between the 1960s and the 2040s.
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For further information contact us at helpdesk@openaire.eu2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
visibility 25visibility views 25 download downloads 2 Powered bymore_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.
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For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2023Embargo end date: 19 Jul 2023 SpainPublisher:DIGITAL.CSIC Authors: Trullenque Blanco, Víctor; Beguería, Santiago; Vicente Serrano, Sergio M.; Peña-Angulo, Dhais; +1 AuthorsTrullenque Blanco, Víctor; Beguería, Santiago; Vicente Serrano, Sergio M.; Peña-Angulo, Dhais; González Hidalgo, José Carlos;handle: 10261/331384
[ES] La base de datos consta de dos archivos en formato .txt con las mallas de anomalías de precipitación (Standardized Precipitation Index) calculadas a 1 y 12 meses sobre el dominio peninsular español, cubriendo el periodo 12/2015_12/2020. Estas han sido calculadas a partir de los datos mensuales de la malla de precipitación MOPREDAScentury (https://doi.org/10.20350/digitalCSIC/15136). Además, se incluye un análisis descriptivo de los 40 episodios de sequía identificados según los criterios de intensidad de la sequía (SPI12 =20 % de la superficie de la malla). Para cada episodio se incluyen las series temporales del SPI01 y SPI12 promedio de toda la malla (expresadas en anomalías); el área de la malla en condiciones de sequía (SPI12 =< -0.84) (expresada en tanto por uno); los mapas integrales del episodio atendiendo a su duración (expresada en número de meses) e intensidad (promedio de las celdas en condiciones de sequía); y los mapas que representan la propagación espacial del episodio. Este registro se corresponde con la versión 1.0.0 del conjunto de datos. La base de datos se distribuye bajo una licencia abierta (Open Data Commons Attribution, ODC-By). [EN] The database consists of two files in .txt format with the precipitation anomaly grids (Standardized Precipitation Index) calculated at 1 and 12 months over the Spanish peninsular domain, covering the period 2015/12_2020/12. These have been calculated from the monthly data of the MOPREDAScentury precipitation grid (https://doi.org/10.20350/digitalCSIC/15136). In addition, a descriptive analysis of the 40 drought episodes identified according to the criteria of drought intensity (SPI12 =20 % of the grid area) is included. For each episode we include the time series of the SPI01 and SPI12 average of the whole grid (expressed in anomalies); the area of the grid under drought conditions (SPI12 =< -0.84) (expressed in percent per one); the integral maps of the episode according to its duration (expressed in number of months) and intensity (average of the cells under drought conditions); and the maps representing the spatial propagation of the episode. This record corresponds to version 1.0.0 of the dataset. The database is distributed under an open license (Open Data Commons Attribution, ODC-By). [ES] Malla SPI01: texto plano. 5219 filas -descontando el encabezado- y 1261 columnas -descontando las coordenadas X e Y-. Malla SPI12: texto plano. 5219 filas -descontando el encabezado- y 1250 columnas -descontando las coordenadas X e Y-. Archivos descriptivos de los episodios: mapas integrales de duración e intensidad, promedios de SPI’1 y SPI12 y mapas de la propagación espacial. [EN] SPI01 grid: plain text. 5219 rows (excluding the header) and 1261 columns (excluding the X and Y coordinates). SPI12 grid: plain text. 5219 rows (excluding the header) and 1250 columns (excluding the X and Y coordinates). Episode descriptive files: duration and intensity integral maps, SPI01 and SPI12 averages, and spatial propagation maps. Project PID2020-116860RB-C22: Extremos térmicos y pluviométricos en la España peninsular 1916-2020), funded by the Spanish Ministry of Science. Open Data Commons Attribution (ODC-By 1.0). Peer reviewed
Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2023 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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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visibility 176visibility views 176 download downloads 35 Powered bymore_vert Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTADataset . 2023 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd 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.euResearch data keyboard_double_arrow_right Dataset 2021Publisher:Zenodo Authors: Sepehr Eslami; Jannis M. Hoch; Edwin H. Sutanudjaja; Hal E. Voepel;Projections of Sea Level Rise (SLR) under RCP 4.5 and RCP 8.5 (AR5) along the Mekong Coast, Published1 by the Ministry of Natural Resources and Environment (MONRE), Hanoi, Vietnam. Projections of Mekong River discharge during the dry season under RCP 4.5 and RCP 8.5 at Kratie, Cambodia. The data contains the cumulative, minimum and maximum dry season (January-1st to April-30th) discharge from 5 different climate models. PCR-GLOBWB2 was run at 5 arc-min spatial resolution and forced with the data based on output from five ISIMIP CMIP5 global climate models (HadGEM2-ES, GFDL-ESM2, IPSL-CM5A-LR, MIROC-ESM-CHEM, NorESM1-M). 1. Ministry of Natural Resources and Environment (MONRE), V. Climate change and sea level rise scenarios for Vietnam, Ministry of Natural Resources and Environment. (2016). 2. Sutanudjaja, E. H. et al. PCR-GLOBWB 2: a 5 arcmin global hydrological and water resources model. Geosci. Model Dev. 11, 2429–2453 (2018). {"references": ["Sutanudjaja et al. (2018)", "Ministry of Natural Resources and Environment (2016)"]}
ZENODO arrow_drop_down Smithsonian figshareDataset . 2021License: CC BYData 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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visibility 162visibility views 162 download downloads 75 Powered bymore_vert ZENODO arrow_drop_down Smithsonian figshareDataset . 2021License: CC BYData 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.euResearch data keyboard_double_arrow_right Dataset 2023Embargo end date: 15 Sep 2023Publisher:Dryad Carlson, Stephanie; Ruhí, Albert; Bogan, Michael; Wölfle Hazard, Cleo; Ayers, Jessica; Grantham, Theodore; Batalla, Ramon; Garcia, Celso;# Meta-data and results for our trend and breakpoint analyses [https://doi.org/10.5061/dryad.d7wm37q6m](https://doi.org/10.5061/dryad.d7wm37q6m) To document flow change, we compiled gauge records from five Mediterranean-climate regions of the world, including California (U.S.), Chile, South Africa, Spain, and Western Australia. For each gauge, we downloaded daily discharge records from public sources (see Open Research Statement and WebTable 1). Next, we limited our analysis to gauges located in Mediterranean-climates zones by retaining the subset of gauges located in Köppen-Geiger climate classes Csa, Csb, Csc (i.e., areas with a dry summer) using maps from Beck et al. 2018. Second, we identified gauges located in minimally disturbed basins. In the US and Australia, we used “reference” gauges identified by the USGS and Bureau of Meteorology, respectively. In South Africa, Chile, and Spain - where reference gauges have not been designated by agencies - we instead used aerial image analysis of upstream watershed conditions to identify basins with no evidence of significant reservoirs or large water infrastructure projects. We note that our determination of “reference-quality” gauges in Spain [excluding Catalonia] is consistent with Messager et al. 2021. Third, we identified gauges with daily data from 1980-2019 (i.e., most recent 40 years in common across the five regions) and no more than one year of missing data. Overall, we identified 158 gauges that met our criteria for inclusion (i.e., Mediterranean-climate, reference-quality, 40 years of data from 1980-2019, and no more than one year of missing data, see WebPanel 1 and WebFigure1). To reduce noise in zero-flow conditions, we defined “zero flows” as flows < 0.1 cfs. Finally, for our analysis of zero-flow trends, we used a liberal definition of “intermittent” and included the subset of streams with ≥ to 1 day/year of zero-flow on average, i.e., ≥ 40 days across the 40 year study, following Messager et al. 2021. Using the population of gauges that met our criteria for inclusion, we conducted trend analyses on daily discharge (for each gauge in our population) and on the annual number of zero-flow days (for the subset of intermittent gauges) across the time series by means of non-parametric Mann-Kendall tests (McLeod 2022). We next explored evidence of flow regime shifts. Specifically, we conducted a breakpoint analysis on the zero-flow days per year using the ‘strucchange’ package in R (Zeileis et al. 2002). We constrained the analysis to test for evidence of a maximum of one breakpoint (indicating a state shift). The meta-data used to run our trend and breakpoint analyses, and the results of those analyses, are presented in this file. **References** Beck HE, Zimmermann NE, McVicar TR, et al. 2018. Present and future Köppen-Geiger climate classification maps at 1-km resolution. Sci Data 5: 180214. McLeod, A.I. (2022). "Kendall: Kendall Rank Correlation and Mann-Kendall trend test". R package version 2.2.1. Available at: [http://cran.r-project.org/package=Kendall](http://cran.r-project.org/package=Kendall). Messager ML, Lehner B, Cockburn C, et al. 2021. Global prevalence of non-perennial rivers and streams. Nature 594: 391–7. Zeileis A, Leisch F, Hornik K, Kleiber C (2002). “strucchange: An R Package for Testing for Structural Change in Linear Regression Models.” Journal of Statistical Software, 7(2), 1–38. doi:10.18637/jss.v007.i02 ## Description of the data and file structure This data file includes columns for meta-data for our analyses ("region", "ID", "latitude", "longitude", "drainage\_area\_km2", "NA\_count"), as well as the results of our trend analyses ("discharge\_tau", "discharge\_p\_value", "zeros\_tau", "zeros\_p\_value") and the results of our breakpoint analyses ("total\_zero\_flow\_days", "BreakpointTime", "MeanZerosBefore", "MeanZerosAfter"). Further detail is provided below. * Region - specifies the Mediterranean-climate region from where the data originated (AU - Australia; CA - California, USA; CH - Chile; SA - South Africa; SP - Spain); * ID - regional ID associated with each gauge record; * latitude - latitude of gauge site; * longitude - longitude of gauge site; * drainage\_area\_km2 - drainage area upstream of each gauge, standardized to units of km2; * discharge\_tau - trend on daily discharge across the time series by means of non-parametric Mann-Kendall tests; * discharge\_p\_value - p-value associated with the trend analysis on daily discharge across the time series by means of non-parametric Mann-Kendall tests; * zeros\_tau - trend on number of annual zero-flow days across the time series by means of non-parametric Mann-Kendall tests; * zeros\_p\_value - p-value associated with the trend analysis on the annual number of zero-flow days across the time series by means of non-parametric Mann-Kendall tests; * NA\_count - a check that we included only gauge records with less than one year of missing data (i.e., for all gauge records included in our analyses, the count of missing data or "NAs" < 365); * total\_zero\_flow\_days - the total number of zero-flow days across the time series, used to identify the subset of "intermittent" and "perennial" gauges (we used a liberal definition of “intermittent” and included the subset of streams with ≥ to 1 day/year of zero-flow on average, i.e., ≥ 40 days across the 40 year study, following Messager et al. 2021); * BreakpointTime - we conducted a breakpoint analysis on the zero-flow days per year and constrained the analysis to test for evidence of a maximum of one breakpoint (indicating a state shift). For the subset of gauges showing evidence of a state shift, we report the year (ranging from the 1st to the 40th year across the time series) associated with the shift as the "BreakpointTime"; * MeanZerosBefore - For the subset of gauges showing evidence of a state shift, we further report the mean number of zero-flow days before the state shift; * MeanZerosAfter - For the subset of gauges showing evidence of a state shift, we further report the mean number of zero-flow days after the state shift. ## Sharing/Access information The gauge data sets utilized for this research were retrieved from the following sources: * Australia - Australian Government, Bureau of Meteorology, Water data online ([http://www.bom.gov.au/waterdata](http://www.bom.gov.au/waterdata)); * California, USA - USGS National Water Information System, USGS Water Data for California ([https://waterdata.usgs.gov/ca/nwis/](https://waterdata.usgs.gov/ca/nwis/)); * Chile - CAMELS-CL explorer (CR)2 ([https://camels.cr2.cl/](https://urldefense.com/v3/__https:/camels.cr2.cl/__;!!D9dNQwwGXtA!VUyljJtmgJsBqSnUMlOHRpds_SLFQHcPi6yYQCph6JPABduySWBpXgy_GBdu1mOihz82D--9A4bnOUyP_Jq79JQ3$)) from Alvarez-Garreton et al. 2018; * South Africa - Republic of South Africa, Department Water and Sanitation, Hydrological Services - Surface Water ([https://www.dws.gov.za/Hydrology/Verified/hymain.aspx](https://urldefense.com/v3/__https:/www.dws.gov.za/Hydrology/Verified/hymain.aspx__;!!D9dNQwwGXtA!VXV4ikJ5GqtpAPzYvj7lfVPS4xbEFbmw4ZNdI8Wtz5pCrLk7OYMIVdetRnWSyctJIh_1bydu4pggv63bc_fSHasLgQ$)); * Spain - Centro de Estudios Hidrográficos (CEDEX) ([https://ceh.cedex.es/anuarioaforos/default.asp](https://ceh.cedex.es/anuarioaforos/default.asp)) and Agència Catalana de l’Aigua: [https://aplicacions.aca.gencat.cat/sdim21/seleccioXarxes.do](https://urldefense.com/v3/__https:/aplicacions.aca.gencat.cat/sdim21/seleccioXarxes.do__;!!D9dNQwwGXtA!VUyljJtmgJsBqSnUMlOHRpds_SLFQHcPi6yYQCph6JPABduySWBpXgy_GBdu1mOihz82D--9A4bnOUyP_G5pTfaN$). ## To document flow change, we compiled gauge records from five Mediterranean-climate regions of the world, including California (U.S.), Chile, South Africa, Spain, and Western Australia. For each gauge, we downloaded daily discharge records from public sources. Next, we limited our analysis to gauges located in Mediterranean-climates zones by retaining the subset of gauges located in Köppen-Geiger climate classes Csa, Csb, Csc (i.e., areas with a dry summer) using maps from Beck et al. 2018. Second, we identified gauges located in minimally disturbed basins. In the US and Australia, we used “reference” gauges identified by the USGS and Bureau of Meteorology, respectively. In South Africa, Chile, and Spain - where reference gauges have not been designated by agencies – we instead used aerial image analysis of upstream watershed conditions to identify basins with no evidence of significant reservoirs or large water infrastructure projects. We note that our determination of “reference-quality” gauges in Spain [excluding Catalonia] is consistent with Messager et al. 2021. Third, we identified gauges with daily data from 1980-2019 (i.e., most recent 40 years in common across the five regions) and no more than one year of missing data. Overall, we identified 158 gauges that met our criteria for inclusion (i.e., Mediterranean-climate, reference-quality, 40 years of data from 1980-2019, and no more than one year of missing data, WebPanel 1, WebFigure1). To reduce noise in zero-flow conditions, we defined “zero flows” as flows < 0.1 cfs. Finally, for our analysis of zero-flow trends, we used a liberal definition of “intermittent” and included the subset of streams with ≥ to 1 day/year of zero-flow on average, i.e., ≥ 40 days across the 40 year study, following Messager et al. 2021. Using the population of gauges that met our criteria for inclusion, we conducted trend analyses on daily discharge (for each gauge in our population) and on the annual number of zero-flow days (for the subset of intermittent gauges) across the time series by means of non-parametric Mann-Kendall tests. We next explored evidence of flow regime shifts. Specifically, we conducted a breakpoint analysis on the zero-flow days per year using the ‘strucchange’ package in R. We constrained the analysis to test for evidence of a maximum of one breakpoint (indicating a state shift). Stream drying is happening globally, with significant ecological and social consequences. Most examples of stream drying come from systems influenced by dam operations or those with highly exploited aquifers. Stream drying is also thought to be happening due to climate change, but examples are surprisingly limited. We explored flow trends from the five Mediterranean-climate regions with a focus on unregulated streams with long-term gauge records. We found consistent evidence of decreasing discharge trends, increasing zero-flow days, and steeper downward discharge trends in smaller basins. Beyond directional trends, many systems recently shifted flow state, including some streams that shifted from perennial to intermittent flow states. Our analyses provide evidence of stream drying consistent with climate change, but also highlight knowledge gaps and challenges in empirically and statistically documenting flow regime shifts. We discuss the myriad consequences of losing flow and propose strategies for improving detection and adapting to flow change.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Bachelor thesis 2018 SpainAuthors: Zabala Prieto, Mikele;[EN] Abiotic stresses such as drought and salinity, not only compromise crop quality and limit yield, but also limit the geographical range in which crops can be arisen. Nowadays, yield loss due to the salinization of the soils has become a major concern all over the world, as the 7% of the world´s land surface is saline. As a consequence of global climate change, the percent of saltaffected land surface has increased in the last 45 years. Thereby, climate change and its effect on soil salinization and drought induction have aroused on an approach to mitigate this problem. A solution could be the use of halophytic plant species, which are able to tolerate high salt concentrations in soil such as Chenopodium quinoa. For that reason, the aim of this study is to determine and study the response of the nitrogen metabolism to drought and high salt stresses in quinoa plants, comparing the effect of drought and severe salinity stresses in these plants and determining the salt concentration in which quinoa plants suffer no stress. So, plants were exposed to drought, 0, 60, 120, 240 and 500 mM of NaCl. Optimal growth was achieved under 0, 60 and 120 mM NaCl and from 240 mM NaCl on it decreased significantly. However, the total biomass was not equally distributed on plant organs, as root:shoot ratio was only significantly bigger under drought conditions. A higher nitrate content was favoured under drought treatment, but not in any salinity treatments, where gradual decrease in nitrate concentration was observed as salt concentration increased. A decrease in NR activity was observed in drought and 240-500 mM NaCl, but remained in optimal values for 0-120 mM NaCl. However, a descent for drought treated plants was observed in the NR activation state. As this was not observed for 500 mM NaCl, where the highest activation levels where measured, negative effects on protein biosynthesis or degradation due to Na+ and Cltoxicity could be suggested. Even though nitrogen assimilation was reduced in quinoa plants, the GS and GDH activities were maintained in all treatments. High ammonium production in leaves by photorespiration and phenolic compound synthesis could be a suggested explanation for the high GS and GDH activities in quinoa leaves. Proteins levels were distinct under drought and salinity. Whereas drought maintained high protein levels in leaves, plants exposed to salinity showed the opposite, leading to hypothesize that proteins and aminoacids could be used to fight osmotic adjustment induced by the studied stresses. Quinoa plants seemed to tolerate NaCl concentrations up to 120 mM, in which stress did not affect the plant growth and nitrogen metabolism development. The plasticity of the plants to tolerate high salt concentrations could have allowed them a more efficient response under the presence of high salinity, ensuring a better performance of the nitrogen metabolism. [EUS] Estres abiotikoek, hala nola, lehortea eta gazitasuna, ez dute soilik uzten kalitatea eta kantitatea baldintzatzen baizik eta hauen esparru geografikoaren mugatzaileak ere izan daitezke. Gaur egun, gazitasunak eragiten duen etekin galera berebiziko garrantzia hartu duen kezka da, izan ere, munduko lurrazaleko %7-a gazia da. Hortaz, aldaketa klimatikoak eta honek duen efektua lurzoruaren gazitze eta lehortzean, arazo honen aurrean konponbide bat bilatzekotan, ikerketa arlo garrantzitsua bilakatu da. Hots, gazitasun eta lehorteak eragindako efektu negatiboei aurre egiteko, gazitasunarekiko tolerantea den Chenopodium quinoa-ren erabilpena proposatzen da labore landare ordezko bezala. Hori dela eta, ikerketa honen helburua quinoa landareek lehorte eta gazitasunaren aurrean duten nitrogeno metabolismoaren erantzuna aztertzea da, lehorte eta gazitasun altuek induzitzen duten erantzunaren konparaketa eginez, halaber, landareek tolera dezaketen gazitasun kontzentraziorik altuena aurkitzea zeinetan estresik ez den antzematen. Beraz, landareak lehorte, 0, 60, 120, 240 eta 500 mM NaCl baldintzetan hazi ziren. Hazkuntza optimoa 0, 60 eta 120 mM NaCl tratamenduetan lortu zen , 240 mM NaCl kontzentraziotik gorako tratamenduentan ostera, murriztu. Hala ere, biomasaren banaketa ez zen berdina izan sustrai zein zurtoin eta hostoetan. Lehortearekin trataturiko landareek sustraietako biomasa altuago bat erakutsi zuten, 500 mM NaCl tratamenduan ikusi ez zena, alegia. Nitrato edukia mantendu egin zen lehortearekin trataturiko landareetan, hala ere, beherakada graduala eman zen gazitasun kontzentrazioa igo ahala. Honekin loturik, NR aktibitateak modu esangarrian behera egin zuela lehorte, 240 eta 500 mM NaCl tratamenduetan behatu zen, baina honen mantentzea eman zen 0- 120 mM NaCl tratamenduetan. Hortaz, NR-aren aktibatze egoera soilik murriztu zen gazitasun tratamenduak jasotako landareetan, minimoak 500 mM NaCl landareetan izanik. Honen erantzule, Na+ eta Cl- ioiek eragindako toxizitateak entzimaren integritate morfologiko zein funtzionalean duten eragin negatiboa izan daitekeela proposatzen da. Nahiz eta nitrogenoaren asimilazioan murrizte metabolikoa jasan, GS eta GDH aktibitatean mantenduak izan dira quinoa landareetan aplikaturiko tratamendu guztietan. Bai lehorte eta gazitasun egoerek, landareek sufritu zezaketen estres osmotikoa dela eta, fotoarnasketa eta konposatu fenolikoen sintesia faboratuko lukete landareetan, amonio kontzentrazio altuak sortaraziz. Proteinak, nitrogeno metabolismoaren azken produktua, maila ezberdinak erakutsi zituen aplikaturiko tratamenduetan. Zenbat eta gazitasun maila altuagoa aplikatu tratamenduetan, proteina kantitateen beheraka gradual negatiboagoa erakusten zuten. Lehortean, ostera, proteina maila altuak mantenduak izan ziren. Kasurik kasu, proteinen erabilpen ezberdinak estres osmotikoari aurre egiteko mekanismo ezberdin posible moduan interpretatuak izan daitezke. Quinoa landareek, tolerantzia maila altua erakutsi dute 120 mM NaCl-ko kontzentrazioetaraino, non estresik ez dute pairatzen. Estres hauen aurrean, landare hauek duten plastikotasun maila altua dela eta, nitrogeno metabolismoan erantzun eraginkorrago bat izatea baimendu die.
ARCHIVO DIGITAL PARA... arrow_drop_down ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONBachelor thesis . 2018Data sources: ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONadd 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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more_vert ARCHIVO DIGITAL PARA... arrow_drop_down ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONBachelor thesis . 2018Data sources: ARCHIVO DIGITAL PARA LA DOCENCIA Y LA INVESTIGACIONadd 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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