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| Página principal > Artículos > Artículos publicados > Extreme drought impacts have been underestimated in grasslands and shrublands globally |
(Colorado State University. Department of Biology) (Utah State University. Department of Wildland Resource) (University of New Mexico. Department of Biology) (Colorado State University. Department of Biology) (Arizona State University) (Carnegie Institution for Science (Washington, Estats Units d'Amèrica)) (Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura) (University of Copenhagen. Department of Geosciences and Natural Resource Management) (Thompson Rivers University. Department of Natural Resource Science) (University of Bayreuth. Department of Disturbance Ecology and Vegetation Dynamics) (University of California. Department of Environmental Studies) (Universidad de Alicante. Departamento de Ecología) (Southwest Biological Science Center) (Cornell University. School of Integrative Plant Science) (Tarbiat Modares University. Department of Range Management) (Tarbiat Modares University. Department of Range Management) (Instituto Pirenaico de Ecología. Departamento de Biodiversidad y Restauración) (Consejo Nacional de Investigación Ciencia y Técnica) (Tel Aviv University) (Tarbiat Modares University. Department of Range Management) (University of Innsbruck. Department of Ecology) (University of Alberta. Department of Biological Sciences) (Cornell University) (University of Bonn. Department of Plant Nutrition.) (University of Greifswald. Department of Experimental Plant Ecology.) (University of Buenos Aires) (University of Buenos Aires) (University of Minnesota. Department of Ecology, Evolution, Behavior) (University of Alberta. Department of Agricultural, Food and Nutritional Science) (Universidad Nacional de Mar del Plata) (California State Polytechnic University. Department of Environmental Science and Management) (Universidad Nacional de Río Negro. Centro de Estudios Ambientales desde la NorPatagonia) (University of Parma. Department of Chemistry) (University of Alberta. Department of Agricultural. Food and Nutritional Science) (Instituto Pirenaico de Ecología) (Universidade Federal de Goiás. Department of Ecology) (Colorado State University. Department of Ecosystem Science and Sustainability) (University of California. Department of Ecology, Evolution, Marine Biology) (US Army Engineer Research and Development Center) (Institute of Biology. Leipzig University) (Universitat Valencia. Centro de Investigaciones sobre Desertificación) (University of Parma. Department of Chemistry) (University of Freiburg) (Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef") (Universidade Federal de Goiás. Department of Ecology) (University of Bergen. Department of Biological Sciences) (Utrecht University. Department of Biology) (Universidade Federal do Rio Grande do Sul. Department of Ecology) (Behavior. University of Minnesota. Department of Ecology. Evolution) (Institute of Botany and Landscape Ecology) (Universidad Nacional del Comahue. Departamento de Gestión Agropecuaria) (Utah State University. Department of Wildland Resource and the Ecology Center) (University of Saskatchewan. Department of Plant Sciences) (University of Copenhagen. Department of Geosciences and Natural Resource Management) (Eastern Oregon Agricultural Research Center. US Department of Agriculture) (Universidad Nacional de Río Negro. Centro de Estudios Ambientales desde la NorPatagonia) (University of Potsdam. Department of Biodiversity Research and Systematic Botany) (Chinese Academy of Forestry) (Universidade Federal da Paraíba) (Universidad Nacional del Sur. Departamento de Biología. Bioquímica y Farmacia.) (International Centre for Bamboo and Rattan) (Institute of Botany) (Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef") (Yokohama National University. Graduate School of Environment and Information Sciences) (University of Oklahoma. School of Biological Sciences) (Western Sydney University) (University of Bayreuth. Department of Disturbance Ecology and Vegetation Dynamics) (Universidade Federal de Goiás. Department of Ecology) (Centre de Recerca Ecològica i d'Aplicacions Forestals) (University of Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura) (University of Winnipeg. Department of Biology) (University of Tartu. Institute of Ecology and Earth Sciences) (Centre de Recerca Ecològica i d'Aplicacions Forestals) (Universidad Nacional d ela Patagonia Austral) (Universidad Nacional de Río Negro. Centro de Estudios Ambientales desde la NorPatagonia) (University of Parma. Department of Chemistry) (Universidade Federal do Rio Grande do Sul. Department of Ecology) (Universidade Federal da Paraíba. Departamento de Sistemática e Ecologia) (University of Texas. Brackenridge Field Laboratory) (Instituto Pirenaico de Ecología. Consejo Superior de Investigaciones Científicas) (Southwest Biological Science Center) (Deakin University. Centre for Integrative Ecology) (Universidad Nacional del Sur. Departamento de Biología. Bioquímica y Farmacia.) (Texas A&M University. Department of Ecology and Conservation Biology) (Rey Juan Carlos University. Department of Biology and Geology) (Universidade Federal da Paraíba. Departamento de Sistemática e Ecologia) (University of Minnesota. Department of Ecology, Evolution, Behavior) (Northeast Normal University) (University of Oklahoma. Oklahoma Biological Survey) (University of Bern. Oeschger Center for Climate Change Research) (Murdoch University. Environmental and Conservation Sciences) (Tel Aviv University. School of Plant Sciences and Food Security) (Norwegian Institute of Bioeconomy Research. Department of Landscape and Biodiversity) (Universidad de Alicante) (University of Bergen. Department of Biological Sciences) (Møreforsking) (University of Sydney. School of Life and Environmental Sciences) (Albert-Ludwig-University of Freiburg.) (Chinese Academy of Sciences) (University of British Columbia. Department of Geography and Biodiversity Research Centre) (University of Bern)| Fecha: | 2024 |
| Resumen: | Climate change is increasing the frequency and severity of short-term (~1 y) drought events-the most common duration of drought-globally. Yet the impact of this intensification of drought on ecosystem functioning remains poorly resolved. This is due in part to the widely disparate approaches ecologists have employed to study drought, variation in the severity and duration of drought studied, and differences among ecosystems in vegetation, edaphic and climatic attributes that can mediate drought impacts. To overcome these problems and better identify the factors that modulate drought responses, we used a coordinated distributed experiment to quantify the impact of short-term drought on grassland and shrubland ecosystems. With a standardized approach, we imposed ~a single year of drought at 100 sites on six continents. Here we show that loss of a foundational ecosystem function-aboveground net primary production (ANPP)-was 60% greater at sites that experienced statistically extreme drought (1-in-100-y event) vs. those sites where drought was nominal (historically more common) in magnitude (35% vs. 21%, respectively). This reduction in a key carbon cycle process with a single year of extreme drought greatly exceeds previously reported losses for grasslands and shrublands. Our global experiment also revealed high variability in drought response but that relative reductions in ANPP were greater in drier ecosystems and those with fewer plant species. Overall, our results demonstrate with unprecedented rigor that the global impacts of projected increases in drought severity have been significantly underestimated and that drier and less diverse sites are likely to be most vulnerable to extreme drought. |
| Ayudas: | Agència de Gestió d'Ajuts Universitaris i de Recerca SGR/2921-1333 Agencia Estatal de Investigación PID2022-140808NB-I00 Agencia Estatal de Investigación PID2021-126927NB-I00 European Commission 777803 European Commission 647038 |
| Nota: | Altres Ajuts: Fundación Ramón Areces grant CIVP20A6621 |
| Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.  |
| Lengua: | Anglès |
| Documento: | Article ; recerca ; Versió publicada |
| Publicado en: | PNAS, Vol. 121, Issue 4 (January 2024) , art. e2309881120 |
