A multi-species synthesis of physiological mechanisms in drought-induced tree mortality

Detalhes bibliográficos
Autor(a) principal: Adams, Henry D
Data de Publicação: 2017
Outros Autores: Zeppel, Melanie J B, Anderegg, William R L, Hartmann, Henrik, Landhäusser, Simon M, Tissue, David T, Huxman, Travis E, Hudson, Patrick J, Franz, Trenton E, Allen, Craig D, Anderegg, Leander D L, Barron-Gafford, Greg A, Beerling, David J, Breshears, David D, Brodribb, Timothy J, Bugmann, Harald, Cobb, Richard C, Collins, Adam D, Dickman, L Turin, Duan, Honglang, Ewers, Brent E, Galiano, Lucía, Galvez, David A, Forner, Nuria Garcia, Gaylord, Monica L, Germino, Matthew J, Gessler, Arthur, Hacke, Uwe G, Hakamada, Rodrigo, Hector, Andy, Jenkins, Michael W, Kane, Jeffrey M, Kolb, Thomas E, Law, Darin J, Lewis, James D, Limousin, Jean-Marc, Love, David M, Macalady, Alison K, Martínez-Vilalta, Jordi, Mencuccini, Maurizio, Mitchell, Patrick J, Muss, Jordan D, O'Brien, Michael J, O'Grady, Anthony P, Pangle, Robert E, Pinkard, Elizabeth A, Piper, Frida I, Plaut, Jennifer A, Pockman, William T, Quirk, Joe, Reinhardt, Keith, Ripullone, Francesco, Ryan, Michael G, Sala, Anna, Sevanto, Sanna, Sperry, John S, Vargas, Rodrigo, Vennetier, Michel, Way, Danielle A, Xu, Chonggang, Yepez, Enrico A, McDowell, Nate G
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/87201
https://doi.org/10.1038/s41559-017-0248-x
Resumo: Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere-atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality projections founded on robust physiological processes. However, the proposed mechanisms of drought-induced mortality, including hydraulic failure and carbon starvation, are unresolved. A growing number of empirical studies have investigated these mechanisms, but data have not been consistently analysed across species and biomes using a standardized physiological framework. Here, we show that xylem hydraulic failure was ubiquitous across multiple tree taxa at drought-induced mortality. All species assessed had 60% or higher loss of xylem hydraulic conductivity, consistent with proposed theoretical and modelled survival thresholds. We found diverse responses in non-structural carbohydrate reserves at mortality, indicating that evidence supporting carbon starvation was not universal. Reduced non-structural carbohydrates were more common for gymnosperms than angiosperms, associated with xylem hydraulic vulnerability, and may have a role in reducing hydraulic function. Our finding that hydraulic failure at drought-induced mortality was persistent across species indicates that substantial improvement in vegetation modelling can be achieved using thresholds in hydraulic function.
id RCAP_6ba3ed1d84b8bcb2fcb1ad194bb45d0d
oai_identifier_str oai:estudogeral.uc.pt:10316/87201
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling A multi-species synthesis of physiological mechanisms in drought-induced tree mortalityWidespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere-atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality projections founded on robust physiological processes. However, the proposed mechanisms of drought-induced mortality, including hydraulic failure and carbon starvation, are unresolved. A growing number of empirical studies have investigated these mechanisms, but data have not been consistently analysed across species and biomes using a standardized physiological framework. Here, we show that xylem hydraulic failure was ubiquitous across multiple tree taxa at drought-induced mortality. All species assessed had 60% or higher loss of xylem hydraulic conductivity, consistent with proposed theoretical and modelled survival thresholds. We found diverse responses in non-structural carbohydrate reserves at mortality, indicating that evidence supporting carbon starvation was not universal. Reduced non-structural carbohydrates were more common for gymnosperms than angiosperms, associated with xylem hydraulic vulnerability, and may have a role in reducing hydraulic function. Our finding that hydraulic failure at drought-induced mortality was persistent across species indicates that substantial improvement in vegetation modelling can be achieved using thresholds in hydraulic function.2017-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/87201http://hdl.handle.net/10316/87201https://doi.org/10.1038/s41559-017-0248-xpor2397-334X29046541Adams, Henry DZeppel, Melanie J BAnderegg, William R LHartmann, HenrikLandhäusser, Simon MTissue, David THuxman, Travis EHudson, Patrick JFranz, Trenton EAllen, Craig DAnderegg, Leander D LBarron-Gafford, Greg ABeerling, David JBreshears, David DBrodribb, Timothy JBugmann, HaraldCobb, Richard CCollins, Adam DDickman, L TurinDuan, HonglangEwers, Brent EGaliano, LucíaGalvez, David AForner, Nuria GarciaGaylord, Monica LGermino, Matthew JGessler, ArthurHacke, Uwe GHakamada, RodrigoHector, AndyJenkins, Michael WKane, Jeffrey MKolb, Thomas ELaw, Darin JLewis, James DLimousin, Jean-MarcLove, David MMacalady, Alison KMartínez-Vilalta, JordiMencuccini, MaurizioMitchell, Patrick JMuss, Jordan DO'Brien, Michael JO'Grady, Anthony PPangle, Robert EPinkard, Elizabeth APiper, Frida IPlaut, Jennifer APockman, William TQuirk, JoeReinhardt, KeithRipullone, FrancescoRyan, Michael GSala, AnnaSevanto, SannaSperry, John SVargas, RodrigoVennetier, MichelWay, Danielle AXu, ChonggangYepez, Enrico AMcDowell, Nate Ginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2019-06-17T20:40:03Zoai:estudogeral.uc.pt:10316/87201Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:08:10.613025Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
title A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
spellingShingle A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
Adams, Henry D
title_short A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
title_full A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
title_fullStr A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
title_full_unstemmed A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
title_sort A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
author Adams, Henry D
author_facet Adams, Henry D
Zeppel, Melanie J B
Anderegg, William R L
Hartmann, Henrik
Landhäusser, Simon M
Tissue, David T
Huxman, Travis E
Hudson, Patrick J
Franz, Trenton E
Allen, Craig D
Anderegg, Leander D L
Barron-Gafford, Greg A
Beerling, David J
Breshears, David D
Brodribb, Timothy J
Bugmann, Harald
Cobb, Richard C
Collins, Adam D
Dickman, L Turin
Duan, Honglang
Ewers, Brent E
Galiano, Lucía
Galvez, David A
Forner, Nuria Garcia
Gaylord, Monica L
Germino, Matthew J
Gessler, Arthur
Hacke, Uwe G
Hakamada, Rodrigo
Hector, Andy
Jenkins, Michael W
Kane, Jeffrey M
Kolb, Thomas E
Law, Darin J
Lewis, James D
Limousin, Jean-Marc
Love, David M
Macalady, Alison K
Martínez-Vilalta, Jordi
Mencuccini, Maurizio
Mitchell, Patrick J
Muss, Jordan D
O'Brien, Michael J
O'Grady, Anthony P
Pangle, Robert E
Pinkard, Elizabeth A
Piper, Frida I
Plaut, Jennifer A
Pockman, William T
Quirk, Joe
Reinhardt, Keith
Ripullone, Francesco
Ryan, Michael G
Sala, Anna
Sevanto, Sanna
Sperry, John S
Vargas, Rodrigo
Vennetier, Michel
Way, Danielle A
Xu, Chonggang
Yepez, Enrico A
McDowell, Nate G
author_role author
author2 Zeppel, Melanie J B
Anderegg, William R L
Hartmann, Henrik
Landhäusser, Simon M
Tissue, David T
Huxman, Travis E
Hudson, Patrick J
Franz, Trenton E
Allen, Craig D
Anderegg, Leander D L
Barron-Gafford, Greg A
Beerling, David J
Breshears, David D
Brodribb, Timothy J
Bugmann, Harald
Cobb, Richard C
Collins, Adam D
Dickman, L Turin
Duan, Honglang
Ewers, Brent E
Galiano, Lucía
Galvez, David A
Forner, Nuria Garcia
Gaylord, Monica L
Germino, Matthew J
Gessler, Arthur
Hacke, Uwe G
Hakamada, Rodrigo
Hector, Andy
Jenkins, Michael W
Kane, Jeffrey M
Kolb, Thomas E
Law, Darin J
Lewis, James D
Limousin, Jean-Marc
Love, David M
Macalady, Alison K
Martínez-Vilalta, Jordi
Mencuccini, Maurizio
Mitchell, Patrick J
Muss, Jordan D
O'Brien, Michael J
O'Grady, Anthony P
Pangle, Robert E
Pinkard, Elizabeth A
Piper, Frida I
Plaut, Jennifer A
Pockman, William T
Quirk, Joe
Reinhardt, Keith
Ripullone, Francesco
Ryan, Michael G
Sala, Anna
Sevanto, Sanna
Sperry, John S
Vargas, Rodrigo
Vennetier, Michel
Way, Danielle A
Xu, Chonggang
Yepez, Enrico A
McDowell, Nate G
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
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.contributor.author.fl_str_mv Adams, Henry D
Zeppel, Melanie J B
Anderegg, William R L
Hartmann, Henrik
Landhäusser, Simon M
Tissue, David T
Huxman, Travis E
Hudson, Patrick J
Franz, Trenton E
Allen, Craig D
Anderegg, Leander D L
Barron-Gafford, Greg A
Beerling, David J
Breshears, David D
Brodribb, Timothy J
Bugmann, Harald
Cobb, Richard C
Collins, Adam D
Dickman, L Turin
Duan, Honglang
Ewers, Brent E
Galiano, Lucía
Galvez, David A
Forner, Nuria Garcia
Gaylord, Monica L
Germino, Matthew J
Gessler, Arthur
Hacke, Uwe G
Hakamada, Rodrigo
Hector, Andy
Jenkins, Michael W
Kane, Jeffrey M
Kolb, Thomas E
Law, Darin J
Lewis, James D
Limousin, Jean-Marc
Love, David M
Macalady, Alison K
Martínez-Vilalta, Jordi
Mencuccini, Maurizio
Mitchell, Patrick J
Muss, Jordan D
O'Brien, Michael J
O'Grady, Anthony P
Pangle, Robert E
Pinkard, Elizabeth A
Piper, Frida I
Plaut, Jennifer A
Pockman, William T
Quirk, Joe
Reinhardt, Keith
Ripullone, Francesco
Ryan, Michael G
Sala, Anna
Sevanto, Sanna
Sperry, John S
Vargas, Rodrigo
Vennetier, Michel
Way, Danielle A
Xu, Chonggang
Yepez, Enrico A
McDowell, Nate G
description Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere-atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality projections founded on robust physiological processes. However, the proposed mechanisms of drought-induced mortality, including hydraulic failure and carbon starvation, are unresolved. A growing number of empirical studies have investigated these mechanisms, but data have not been consistently analysed across species and biomes using a standardized physiological framework. Here, we show that xylem hydraulic failure was ubiquitous across multiple tree taxa at drought-induced mortality. All species assessed had 60% or higher loss of xylem hydraulic conductivity, consistent with proposed theoretical and modelled survival thresholds. We found diverse responses in non-structural carbohydrate reserves at mortality, indicating that evidence supporting carbon starvation was not universal. Reduced non-structural carbohydrates were more common for gymnosperms than angiosperms, associated with xylem hydraulic vulnerability, and may have a role in reducing hydraulic function. Our finding that hydraulic failure at drought-induced mortality was persistent across species indicates that substantial improvement in vegetation modelling can be achieved using thresholds in hydraulic function.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/87201
http://hdl.handle.net/10316/87201
https://doi.org/10.1038/s41559-017-0248-x
url http://hdl.handle.net/10316/87201
https://doi.org/10.1038/s41559-017-0248-x
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 2397-334X
29046541
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133974192193536