Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate

Plants have evolved different strategies to cope with drought, involving alternative ecophysiologies and different levels of plasticity. These strategies are critical for species of limited distribution, which are especially vulnerable to the current rates of rapid environmental change. The aim of t...

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Autores: Lázaro-Nogal, Ana, Forner, Alicia, Traveset, Anna, Valladares Ros, Fernando
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/101888
Acceso en línea:http://hdl.handle.net/10261/101888
Access Level:acceso abierto
Palabra clave:Limited-range species
Drought
Phenotypic plasticity
Stomatal conductance
Water-use efficiency
Climate change
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spelling Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climateLázaro-Nogal, AnaForner, AliciaTraveset, AnnaValladares Ros, FernandoLimited-range speciesDroughtPhenotypic plasticityStomatal conductanceWater-use efficiencyClimate changePlants have evolved different strategies to cope with drought, involving alternative ecophysiologies and different levels of plasticity. These strategies are critical for species of limited distribution, which are especially vulnerable to the current rates of rapid environmental change. The aim of this study was to assess the water strategy of two species with limited distribution, Cneorum tricoccon L. and Rhamnus ludovici-salvatoris Chodat., and evaluate their interpopulation variability along an aridity gradient to estimate their vulnerability to a drier climate. We measured different ecophysiological traits influenced by drought - stomatal conductance, maximum photochemical efficiency of photosynthesis II, carbon isotope ratio and chlorophyll concentration - in two climatically contrasting years, before and during summer drought. Both species were vulnerable to drought at the aridity limit of the gradient, but showed contrasting water strategies: while C. tricoccon was consistent in its water conservation strategy across the aridity gradient, R. ludovici-salvatoris was not, displaying higher and more variable stomatal conductances and being able to increase water-use efficiency at the most xeric sites. Changes in length and intensity of drought events may favor one species' strategy to the detriment of the other: C. tricoccon is more vulnerable to chronic and prolonged droughts, whereas short but acute droughts might have a stronger effect on R. ludovici-salvatoris. In those communities where these two species coexist, such different strategies might lead to changes in community structure under climate change scenarios, with unknown cascade effects on ecosystem functioning. © 2013 The Author 2013. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.Funding was provided by the Spanish Ministry for Innovation and Science with the grants Consolider Montes (CSD2008_00040), VULGLO (CGL2010-22180-C03-03), PATSIMON (CGL2010-18759) and REMEDINAL II (CM-S2009/AMB-1783)Peer ReviewedHeron PublishingMinisterio de Ciencia e Innovación (España)20132014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/101888reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1093/treephys/tpt103info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1018882026-05-22T06:33:51Z
dc.title.none.fl_str_mv Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
title Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
spellingShingle Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
Lázaro-Nogal, Ana
Limited-range species
Drought
Phenotypic plasticity
Stomatal conductance
Water-use efficiency
Climate change
title_short Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
title_full Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
title_fullStr Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
title_full_unstemmed Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
title_sort Contrasting water strategies of two Mediterranean shrubs of limited distribution: Uncertain future under a drier climate
dc.creator.none.fl_str_mv Lázaro-Nogal, Ana
Forner, Alicia
Traveset, Anna
Valladares Ros, Fernando
author Lázaro-Nogal, Ana
author_facet Lázaro-Nogal, Ana
Forner, Alicia
Traveset, Anna
Valladares Ros, Fernando
author_role author
author2 Forner, Alicia
Traveset, Anna
Valladares Ros, Fernando
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
dc.subject.none.fl_str_mv Limited-range species
Drought
Phenotypic plasticity
Stomatal conductance
Water-use efficiency
Climate change
topic Limited-range species
Drought
Phenotypic plasticity
Stomatal conductance
Water-use efficiency
Climate change
description Plants have evolved different strategies to cope with drought, involving alternative ecophysiologies and different levels of plasticity. These strategies are critical for species of limited distribution, which are especially vulnerable to the current rates of rapid environmental change. The aim of this study was to assess the water strategy of two species with limited distribution, Cneorum tricoccon L. and Rhamnus ludovici-salvatoris Chodat., and evaluate their interpopulation variability along an aridity gradient to estimate their vulnerability to a drier climate. We measured different ecophysiological traits influenced by drought - stomatal conductance, maximum photochemical efficiency of photosynthesis II, carbon isotope ratio and chlorophyll concentration - in two climatically contrasting years, before and during summer drought. Both species were vulnerable to drought at the aridity limit of the gradient, but showed contrasting water strategies: while C. tricoccon was consistent in its water conservation strategy across the aridity gradient, R. ludovici-salvatoris was not, displaying higher and more variable stomatal conductances and being able to increase water-use efficiency at the most xeric sites. Changes in length and intensity of drought events may favor one species' strategy to the detriment of the other: C. tricoccon is more vulnerable to chronic and prolonged droughts, whereas short but acute droughts might have a stronger effect on R. ludovici-salvatoris. In those communities where these two species coexist, such different strategies might lead to changes in community structure under climate change scenarios, with unknown cascade effects on ecosystem functioning. © 2013 The Author 2013. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/101888
url http://hdl.handle.net/10261/101888
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1093/treephys/tpt103
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Heron Publishing
publisher.none.fl_str_mv Heron Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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