Extreme drought impacts have been underestimated in grasslands and shrublands globally
- Autores
- Smith, Melinda D.; Wilkins, Kate D.; Holdrege, Martin C.; Wilfahrt, Peter; Collins, Scott L.; Knapp, Alan K.; Sala, Osvaldo Esteban; Dukes, Jeffrey S.; Phillips, Richard P.; Yahdjian, María Laura; Gherardi, Laureano; Ohlert, Timothy; Beier, Claus; Fraser, Lauchlan H.; Jentsch, Anke; Loik, Michael E.; Maestre, Fernando T.; Power, Sally A.; Yu, Qiang; Felton, Andrew J.; Munson, Seth M.; Bruschetti, Carlos Martin; Calvo, Dianela Alejandra; Leder, Cintia Vanesa; Loydi, Alejandro; Oñatibia, Gastón Rafael; Peri, Pablo Luis; Peter, Guadalupe; Zeiter, Michaela; Zhang, Fawei; Zhu, Juntao; Zong, Ning; Zuo, Xiaoan
- Año de publicación
- 2024
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
Fil: Smith, Melinda D.. State University of Colorado - Fort Collins; Estados Unidos
Fil: Wilkins, Kate D.. Denver Zoo; Estados Unidos
Fil: Holdrege, Martin C.. State University of Utah; Estados Unidos
Fil: Wilfahrt, Peter. University of Minnesota; Estados Unidos
Fil: Collins, Scott L.. University of New Mexico; Estados Unidos
Fil: Knapp, Alan K.. State University of Colorado - Fort Collins; Estados Unidos
Fil: Sala, Osvaldo Esteban. Arizona State University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Dukes, Jeffrey S.. Carnegie Institution for Science; Estados Unidos
Fil: Phillips, Richard P.. Indiana University; Estados Unidos
Fil: Yahdjian, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Gherardi, Laureano. University of California; Estados Unidos
Fil: Ohlert, Timothy. State University of Colorado - Fort Collins; Estados Unidos
Fil: Beier, Claus. Universidad de Copenhagen; Dinamarca
Fil: Fraser, Lauchlan H.. Thompson Rivers University; Canadá
Fil: Jentsch, Anke. University of Bayreuth; Alemania
Fil: Loik, Michael E.. University of California; Estados Unidos
Fil: Maestre, Fernando T.. Universidad de Alicante; España
Fil: Power, Sally A.. Hawkesbury Institute For The Environment; Australia. Western Sydney University; Australia
Fil: Yu, Qiang. Beijing Forestry University; China
Fil: Felton, Andrew J.. Montana State University; Estados Unidos
Fil: Munson, Seth M.. United States Geological Survey; Estados Unidos
Fil: Bruschetti, Carlos Martin. University of Minnesota; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Calvo, Dianela Alejandra. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Leder, Cintia Vanesa. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Loydi, Alejandro. University of Saskatchewan; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Oñatibia, Gastón Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Peter, Guadalupe. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zeiter, Michaela. University of Bern; Suiza
Fil: Zhang, Fawei. Chinese Academy of Sciences; República de China
Fil: Zhu, Juntao. Chinese Academy of Sciences; República de China
Fil: Zong, Ning. Chinese Academy of Sciences; República de China
Fil: Zuo, Xiaoan. Chinese Academy of Sciences; República de China - Materia
-
CLIMATE EXTREME
DROUGHT-NET
INTERNATIONAL DROUGHT EXPERIMENT
PRODUCTIVITY
CLIMATE EXTREME
PRODUCTIVITY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/240277
Ver los metadatos del registro completo
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Extreme drought impacts have been underestimated in grasslands and shrublands globallySmith, Melinda D.Wilkins, Kate D.Holdrege, Martin C.Wilfahrt, PeterCollins, Scott L.Knapp, Alan K.Sala, Osvaldo EstebanDukes, Jeffrey S.Phillips, Richard P.Yahdjian, María LauraGherardi, LaureanoOhlert, TimothyBeier, ClausFraser, Lauchlan H.Jentsch, AnkeLoik, Michael E.Maestre, Fernando T.Power, Sally A.Yu, QiangFelton, Andrew J.Munson, Seth M.Bruschetti, Carlos MartinCalvo, Dianela AlejandraLeder, Cintia VanesaLoydi, AlejandroOñatibia, Gastón RafaelPeri, Pablo LuisPeter, GuadalupeZeiter, MichaelaZhang, FaweiZhu, JuntaoZong, NingZuo, XiaoanCLIMATE EXTREMEDROUGHT-NETINTERNATIONAL DROUGHT EXPERIMENTPRODUCTIVITYCLIMATE EXTREMEPRODUCTIVITYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Climate 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.Fil: Smith, Melinda D.. State University of Colorado - Fort Collins; Estados UnidosFil: Wilkins, Kate D.. Denver Zoo; Estados UnidosFil: Holdrege, Martin C.. State University of Utah; Estados UnidosFil: Wilfahrt, Peter. University of Minnesota; Estados UnidosFil: Collins, Scott L.. University of New Mexico; Estados UnidosFil: Knapp, Alan K.. State University of Colorado - Fort Collins; Estados UnidosFil: Sala, Osvaldo Esteban. Arizona State University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Dukes, Jeffrey S.. Carnegie Institution for Science; Estados UnidosFil: Phillips, Richard P.. Indiana University; Estados UnidosFil: Yahdjian, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Gherardi, Laureano. University of California; Estados UnidosFil: Ohlert, Timothy. State University of Colorado - Fort Collins; Estados UnidosFil: Beier, Claus. Universidad de Copenhagen; DinamarcaFil: Fraser, Lauchlan H.. Thompson Rivers University; CanadáFil: Jentsch, Anke. University of Bayreuth; AlemaniaFil: Loik, Michael E.. University of California; Estados UnidosFil: Maestre, Fernando T.. Universidad de Alicante; EspañaFil: Power, Sally A.. Hawkesbury Institute For The Environment; Australia. Western Sydney University; AustraliaFil: Yu, Qiang. Beijing Forestry University; ChinaFil: Felton, Andrew J.. Montana State University; Estados UnidosFil: Munson, Seth M.. United States Geological Survey; Estados UnidosFil: Bruschetti, Carlos Martin. University of Minnesota; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Calvo, Dianela Alejandra. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Leder, Cintia Vanesa. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Loydi, Alejandro. University of Saskatchewan; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Oñatibia, Gastón Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaFil: Peter, Guadalupe. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zeiter, Michaela. University of Bern; SuizaFil: Zhang, Fawei. Chinese Academy of Sciences; República de ChinaFil: Zhu, Juntao. Chinese Academy of Sciences; República de ChinaFil: Zong, Ning. Chinese Academy of Sciences; República de ChinaFil: Zuo, Xiaoan. Chinese Academy of Sciences; República de ChinaNational Academy of Sciences2024-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/240277Smith, Melinda D.; Wilkins, Kate D.; Holdrege, Martin C.; Wilfahrt, Peter; Collins, Scott L.; et al.; Extreme drought impacts have been underestimated in grasslands and shrublands globally; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 121; 4; 1-2024; 1-100027-8424CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.pnas.org/doi/10.1073/pnas.2309881120info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2309881120info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:08:51Zoai:ri.conicet.gov.ar:11336/240277instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:08:51.489CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| title |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| spellingShingle |
Extreme drought impacts have been underestimated in grasslands and shrublands globally Smith, Melinda D. CLIMATE EXTREME DROUGHT-NET INTERNATIONAL DROUGHT EXPERIMENT PRODUCTIVITY CLIMATE EXTREME PRODUCTIVITY |
| title_short |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| title_full |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| title_fullStr |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| title_full_unstemmed |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| title_sort |
Extreme drought impacts have been underestimated in grasslands and shrublands globally |
| dc.creator.none.fl_str_mv |
Smith, Melinda D. Wilkins, Kate D. Holdrege, Martin C. Wilfahrt, Peter Collins, Scott L. Knapp, Alan K. Sala, Osvaldo Esteban Dukes, Jeffrey S. Phillips, Richard P. Yahdjian, María Laura Gherardi, Laureano Ohlert, Timothy Beier, Claus Fraser, Lauchlan H. Jentsch, Anke Loik, Michael E. Maestre, Fernando T. Power, Sally A. Yu, Qiang Felton, Andrew J. Munson, Seth M. Bruschetti, Carlos Martin Calvo, Dianela Alejandra Leder, Cintia Vanesa Loydi, Alejandro Oñatibia, Gastón Rafael Peri, Pablo Luis Peter, Guadalupe Zeiter, Michaela Zhang, Fawei Zhu, Juntao Zong, Ning Zuo, Xiaoan |
| author |
Smith, Melinda D. |
| author_facet |
Smith, Melinda D. Wilkins, Kate D. Holdrege, Martin C. Wilfahrt, Peter Collins, Scott L. Knapp, Alan K. Sala, Osvaldo Esteban Dukes, Jeffrey S. Phillips, Richard P. Yahdjian, María Laura Gherardi, Laureano Ohlert, Timothy Beier, Claus Fraser, Lauchlan H. Jentsch, Anke Loik, Michael E. Maestre, Fernando T. Power, Sally A. Yu, Qiang Felton, Andrew J. Munson, Seth M. Bruschetti, Carlos Martin Calvo, Dianela Alejandra Leder, Cintia Vanesa Loydi, Alejandro Oñatibia, Gastón Rafael Peri, Pablo Luis Peter, Guadalupe Zeiter, Michaela Zhang, Fawei Zhu, Juntao Zong, Ning Zuo, Xiaoan |
| author_role |
author |
| author2 |
Wilkins, Kate D. Holdrege, Martin C. Wilfahrt, Peter Collins, Scott L. Knapp, Alan K. Sala, Osvaldo Esteban Dukes, Jeffrey S. Phillips, Richard P. Yahdjian, María Laura Gherardi, Laureano Ohlert, Timothy Beier, Claus Fraser, Lauchlan H. Jentsch, Anke Loik, Michael E. Maestre, Fernando T. Power, Sally A. Yu, Qiang Felton, Andrew J. Munson, Seth M. Bruschetti, Carlos Martin Calvo, Dianela Alejandra Leder, Cintia Vanesa Loydi, Alejandro Oñatibia, Gastón Rafael Peri, Pablo Luis Peter, Guadalupe Zeiter, Michaela Zhang, Fawei Zhu, Juntao Zong, Ning Zuo, Xiaoan |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
CLIMATE EXTREME DROUGHT-NET INTERNATIONAL DROUGHT EXPERIMENT PRODUCTIVITY CLIMATE EXTREME PRODUCTIVITY |
| topic |
CLIMATE EXTREME DROUGHT-NET INTERNATIONAL DROUGHT EXPERIMENT PRODUCTIVITY CLIMATE EXTREME PRODUCTIVITY |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
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. Fil: Smith, Melinda D.. State University of Colorado - Fort Collins; Estados Unidos Fil: Wilkins, Kate D.. Denver Zoo; Estados Unidos Fil: Holdrege, Martin C.. State University of Utah; Estados Unidos Fil: Wilfahrt, Peter. University of Minnesota; Estados Unidos Fil: Collins, Scott L.. University of New Mexico; Estados Unidos Fil: Knapp, Alan K.. State University of Colorado - Fort Collins; Estados Unidos Fil: Sala, Osvaldo Esteban. Arizona State University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Dukes, Jeffrey S.. Carnegie Institution for Science; Estados Unidos Fil: Phillips, Richard P.. Indiana University; Estados Unidos Fil: Yahdjian, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Gherardi, Laureano. University of California; Estados Unidos Fil: Ohlert, Timothy. State University of Colorado - Fort Collins; Estados Unidos Fil: Beier, Claus. Universidad de Copenhagen; Dinamarca Fil: Fraser, Lauchlan H.. Thompson Rivers University; Canadá Fil: Jentsch, Anke. University of Bayreuth; Alemania Fil: Loik, Michael E.. University of California; Estados Unidos Fil: Maestre, Fernando T.. Universidad de Alicante; España Fil: Power, Sally A.. Hawkesbury Institute For The Environment; Australia. Western Sydney University; Australia Fil: Yu, Qiang. Beijing Forestry University; China Fil: Felton, Andrew J.. Montana State University; Estados Unidos Fil: Munson, Seth M.. United States Geological Survey; Estados Unidos Fil: Bruschetti, Carlos Martin. University of Minnesota; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Calvo, Dianela Alejandra. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Leder, Cintia Vanesa. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Loydi, Alejandro. University of Saskatchewan; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: Oñatibia, Gastón Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina Fil: Peter, Guadalupe. Universidad Nacional de Río Negro. Sede Atlántica. Centro de Estudios Ambientales desde la Norpatagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Zeiter, Michaela. University of Bern; Suiza Fil: Zhang, Fawei. Chinese Academy of Sciences; República de China Fil: Zhu, Juntao. Chinese Academy of Sciences; República de China Fil: Zong, Ning. Chinese Academy of Sciences; República de China Fil: Zuo, Xiaoan. Chinese Academy of Sciences; República de China |
| description |
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. |
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2024 |
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2024-01 |
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http://hdl.handle.net/11336/240277 Smith, Melinda D.; Wilkins, Kate D.; Holdrege, Martin C.; Wilfahrt, Peter; Collins, Scott L.; et al.; Extreme drought impacts have been underestimated in grasslands and shrublands globally; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 121; 4; 1-2024; 1-10 0027-8424 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/240277 |
| identifier_str_mv |
Smith, Melinda D.; Wilkins, Kate D.; Holdrege, Martin C.; Wilfahrt, Peter; Collins, Scott L.; et al.; Extreme drought impacts have been underestimated in grasslands and shrublands globally; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 121; 4; 1-2024; 1-10 0027-8424 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/url/https://www.pnas.org/doi/10.1073/pnas.2309881120 info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2309881120 |
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National Academy of Sciences |
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National Academy of Sciences |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
| reponame_str |
CONICET Digital (CONICET) |
| collection |
CONICET Digital (CONICET) |
| instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
| _version_ |
1846083235755327488 |
| score |
13.22299 |