Linking Forest Flammability and Plant Vulnerability to Drought

Globally, fire regimes are being altered by changing climatic conditions. New fire regimes have the potential to drive species extinctions and cause ecosystem state changes, with a range of consequences for ecosystem services. Despite the co-occurrence of forest fires with drought, current approache...

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Autores: Nolan, Rachael H., Blackman, Chris J., Resco de Dios, Víctor, Choat, Brendan, Medlyn, Belinda E., Li, Ximeng, Bradstock, Ross A., Boer, Matthias M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/69972
Acceso en línea:https://doi.org/10.3390/f11070779
http://hdl.handle.net/10459.1/69972
Access Level:acceso abierto
Palabra clave:Drought
Flammability
Fuel moisture
Leaf water potential
Plant traits
Wildfire
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spelling Linking Forest Flammability and Plant Vulnerability to DroughtNolan, Rachael H.Blackman, Chris J.Resco de Dios, VíctorChoat, BrendanMedlyn, Belinda E.Li, XimengBradstock, Ross A.Boer, Matthias M.DroughtFlammabilityFuel moistureLeaf water potentialPlant traitsWildfireGlobally, fire regimes are being altered by changing climatic conditions. New fire regimes have the potential to drive species extinctions and cause ecosystem state changes, with a range of consequences for ecosystem services. Despite the co-occurrence of forest fires with drought, current approaches to modelling flammability largely overlook the large body of research into plant vulnerability to drought. Here, we outline the mechanisms through which plant responses to drought may affect forest flammability, specifically fuel moisture and the ratio of dead to live fuels. We present a framework for modelling live fuel moisture content (moisture content of foliage and twigs) from soil water content and plant traits, including rooting patterns and leaf traits such as the turgor loss point, osmotic potential, elasticity and leaf mass per area. We also present evidence that physiological drought stress may contribute to previously observed fuel moisture thresholds in south-eastern Australia. Of particular relevance is leaf cavitation and subsequent shedding, which transforms live fuels into dead fuels, which are drier, and thus easier to ignite. We suggest that capitalising on drought research to inform wildfire research presents a major opportunity to develop new insights into wildfires, and new predictive models of seasonal fuel dynamics.We thank the New South Wales Government’s Department of Planning, Industry and Environment for providing funds to support this research via the NSW Bushfire Risk Management Research Hub; the Spanish Government (RYC-2012-10970, AGL2015-69151-R); an Australian Research Council Linkage grant with the New South Wales Department of Planning, Industry and Environment (LP140100232); and an Australian Research Council Future Fellowship (FT130101115).MDPI2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.3390/f11070779http://hdl.handle.net/10459.1/69972reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésMINECO/PN2013-2016/AGL2015-69151-RReproducció del document publicat a: https://doi.org/10.3390/f11070779Forests, 2020, vol. 11, núm. 7, article 779cc-by (c) Nolan, Rachael H. et al., 2020info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:repositori.udl.cat:10459.1/699722026-06-24T12:42:17Z
dc.title.none.fl_str_mv Linking Forest Flammability and Plant Vulnerability to Drought
title Linking Forest Flammability and Plant Vulnerability to Drought
spellingShingle Linking Forest Flammability and Plant Vulnerability to Drought
Nolan, Rachael H.
Drought
Flammability
Fuel moisture
Leaf water potential
Plant traits
Wildfire
title_short Linking Forest Flammability and Plant Vulnerability to Drought
title_full Linking Forest Flammability and Plant Vulnerability to Drought
title_fullStr Linking Forest Flammability and Plant Vulnerability to Drought
title_full_unstemmed Linking Forest Flammability and Plant Vulnerability to Drought
title_sort Linking Forest Flammability and Plant Vulnerability to Drought
dc.creator.none.fl_str_mv Nolan, Rachael H.
Blackman, Chris J.
Resco de Dios, Víctor
Choat, Brendan
Medlyn, Belinda E.
Li, Ximeng
Bradstock, Ross A.
Boer, Matthias M.
author Nolan, Rachael H.
author_facet Nolan, Rachael H.
Blackman, Chris J.
Resco de Dios, Víctor
Choat, Brendan
Medlyn, Belinda E.
Li, Ximeng
Bradstock, Ross A.
Boer, Matthias M.
author_role author
author2 Blackman, Chris J.
Resco de Dios, Víctor
Choat, Brendan
Medlyn, Belinda E.
Li, Ximeng
Bradstock, Ross A.
Boer, Matthias M.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Drought
Flammability
Fuel moisture
Leaf water potential
Plant traits
Wildfire
topic Drought
Flammability
Fuel moisture
Leaf water potential
Plant traits
Wildfire
description Globally, fire regimes are being altered by changing climatic conditions. New fire regimes have the potential to drive species extinctions and cause ecosystem state changes, with a range of consequences for ecosystem services. Despite the co-occurrence of forest fires with drought, current approaches to modelling flammability largely overlook the large body of research into plant vulnerability to drought. Here, we outline the mechanisms through which plant responses to drought may affect forest flammability, specifically fuel moisture and the ratio of dead to live fuels. We present a framework for modelling live fuel moisture content (moisture content of foliage and twigs) from soil water content and plant traits, including rooting patterns and leaf traits such as the turgor loss point, osmotic potential, elasticity and leaf mass per area. We also present evidence that physiological drought stress may contribute to previously observed fuel moisture thresholds in south-eastern Australia. Of particular relevance is leaf cavitation and subsequent shedding, which transforms live fuels into dead fuels, which are drier, and thus easier to ignite. We suggest that capitalising on drought research to inform wildfire research presents a major opportunity to develop new insights into wildfires, and new predictive models of seasonal fuel dynamics.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.3390/f11070779
http://hdl.handle.net/10459.1/69972
url https://doi.org/10.3390/f11070779
http://hdl.handle.net/10459.1/69972
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv MINECO/PN2013-2016/AGL2015-69151-R
Reproducció del document publicat a: https://doi.org/10.3390/f11070779
Forests, 2020, vol. 11, núm. 7, article 779
dc.rights.none.fl_str_mv cc-by (c) Nolan, Rachael H. et al., 2020
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by (c) Nolan, Rachael H. et al., 2020
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
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