Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.

González de Andrés, Ester; Camarero, Jesús Julio; Blanco Vaca, Juan Antonio; Imbert Rodríguez, Bosco; Lo, Yueh-Hsin; Sangüesa Barreda, G.; Castillo Martínez, Federico

Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.

Mixed conifer-hardwood forests can be more productive than pure forests and they are increasingly considered as ecosystems that could provide adaptation strategies in the face of global change. However, the combined effects of tree-to-tree competition, rising atmospheric CO2 concentrations and clima...

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Autores:	González de Andrés, Ester, Camarero, Jesús Julio, Blanco Vaca, Juan Antonio, Imbert Rodríguez, Bosco, Lo, Yueh-Hsin, Sangüesa Barreda, G., Castillo Martínez, Federico
Tipo de recurso:	artículo
Estado:	Versión aceptada para publicación
Fecha de publicación:	2018
País:	España
Institución:	Universidad Pública de Navarra
Repositorio:	Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:	oai:academica-e.unavarra.es:2454/47385
Acceso en línea:	https://hdl.handle.net/2454/47385
Access Level:	acceso abierto
Palabra clave:	Atmospheric CO2 concentration Basal area increment Biotic interactions Drought Fagus sylvatica Pinus sylvestris Stable carbon isotopes

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spelling	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.González de Andrés, EsterCamarero, Jesús JulioBlanco Vaca, Juan AntonioImbert Rodríguez, BoscoLo, Yueh-HsinSangüesa Barreda, G.Castillo Martínez, FedericoAtmospheric CO2 concentrationBasal area incrementBiotic interactionsDroughtFagus sylvaticaPinus sylvestrisStable carbon isotopesMixed conifer-hardwood forests can be more productive than pure forests and they are increasingly considered as ecosystems that could provide adaptation strategies in the face of global change. However, the combined effects of tree-to-tree competition, rising atmospheric CO2 concentrations and climate on such mixtures remain poorly characterized and understood.2. To fill this research gap, we reconstructed 34-year series (1980-2013) of growth (basal area increment, BAI) and intrinsic water-use efficiency (iWUE) of Scots pine (Pinus sylvestris L.)-European beech (Fagus sylvatica L.) mixed stands at two climati-cally contrasting sites located in the southwestern Pyrenees. We also gathered data on tree-to-tree competition and climate variables in order to test the hypotheses that (1) radial growth will be greater when exposed to inter- than to intraspecific competition, that is, when species complementarity occurs and (2) enhanced iWUE could be linked to improved stem radial growth.3. Growth of both species was reduced when intraspecific competition increased. Species complementarity was linked to improved growth of Scots pine at the continental site, while competition overrode any complementarity advantage at the drought-prone Mediterranean site. Beech growth did not show any significant response to pine admixture likely due to shade tolerance and the highly competitive nature of this species. Increasing interspecific competition drove recent iWUE changes, which increased in Scots pine but decreased in European beech. The iWUE enhancement did not involve any growth improvement in Scots pine. However, the positive BAIiWUE relationship found for beech suggests an enhanced beech growth in drought-prone sites due to improved water use.4. Synthesis. Complementarity may enhance growth in mixed forests. However, water scarcity can constrict light-related complementarity for shade intolerant species (Scots pine) in drought-prone sites. Basal area increment-intrinsic water-use efficiency relationships were negative for Scots pine and positive for European beech. These contrasting behaviours have got implications for coping with the expected increasing drought events in Scots pine-European beech mixtures located near ecological limit of the two species. Complementarity effects between tree species should be considered to avoid overestimating the degree of future carbon uptake by mixed conifer¿broadleaf forests.Ministerio de Ciencia y Tecnología, Grant/Award Number: RYC-2011-08082; Seventh Framework Programme, Grant/Award Number: CIG-2012-326718-ECOPYREN3; Ministerio de Economía y Competitividad, Grant/Award Number: AGL2012-33465 and BES-2013-066705WileyBritish Ecological SocietyCiencias del Medio NaturalNatura Ingurunearen Zientziak2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2454/47385reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/MICINN//RYC-2011-08082info:eu-repo/grantAgreement/MINECO//AGL2012-33465info:eu-repo/grantAgreement/MINECO//BES-2013-066705info:eu-repo/grantAgreement/European Commission/FP7/326718© 2017 The Authors © 2017 British Ecological Societyinfo:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/473852026-06-17T12:41:47Z
dc.title.none.fl_str_mv	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
title	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
spellingShingle	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition. González de Andrés, Ester Atmospheric CO2 concentration Basal area increment Biotic interactions Drought Fagus sylvatica Pinus sylvestris Stable carbon isotopes
title_short	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
title_full	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
title_fullStr	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
title_full_unstemmed	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
title_sort	Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.
dc.creator.none.fl_str_mv	González de Andrés, Ester Camarero, Jesús Julio Blanco Vaca, Juan Antonio Imbert Rodríguez, Bosco Lo, Yueh-Hsin Sangüesa Barreda, G. Castillo Martínez, Federico
author	González de Andrés, Ester
author_facet	González de Andrés, Ester Camarero, Jesús Julio Blanco Vaca, Juan Antonio Imbert Rodríguez, Bosco Lo, Yueh-Hsin Sangüesa Barreda, G. Castillo Martínez, Federico
author_role	author
author2	Camarero, Jesús Julio Blanco Vaca, Juan Antonio Imbert Rodríguez, Bosco Lo, Yueh-Hsin Sangüesa Barreda, G. Castillo Martínez, Federico
author2_role	author author author author author author
dc.contributor.none.fl_str_mv	Ciencias del Medio Natural Natura Ingurunearen Zientziak
dc.subject.none.fl_str_mv	Atmospheric CO2 concentration Basal area increment Biotic interactions Drought Fagus sylvatica Pinus sylvestris Stable carbon isotopes
topic	Atmospheric CO2 concentration Basal area increment Biotic interactions Drought Fagus sylvatica Pinus sylvestris Stable carbon isotopes
description	Mixed conifer-hardwood forests can be more productive than pure forests and they are increasingly considered as ecosystems that could provide adaptation strategies in the face of global change. However, the combined effects of tree-to-tree competition, rising atmospheric CO2 concentrations and climate on such mixtures remain poorly characterized and understood.2. To fill this research gap, we reconstructed 34-year series (1980-2013) of growth (basal area increment, BAI) and intrinsic water-use efficiency (iWUE) of Scots pine (Pinus sylvestris L.)-European beech (Fagus sylvatica L.) mixed stands at two climati-cally contrasting sites located in the southwestern Pyrenees. We also gathered data on tree-to-tree competition and climate variables in order to test the hypotheses that (1) radial growth will be greater when exposed to inter- than to intraspecific competition, that is, when species complementarity occurs and (2) enhanced iWUE could be linked to improved stem radial growth.3. Growth of both species was reduced when intraspecific competition increased. Species complementarity was linked to improved growth of Scots pine at the continental site, while competition overrode any complementarity advantage at the drought-prone Mediterranean site. Beech growth did not show any significant response to pine admixture likely due to shade tolerance and the highly competitive nature of this species. Increasing interspecific competition drove recent iWUE changes, which increased in Scots pine but decreased in European beech. The iWUE enhancement did not involve any growth improvement in Scots pine. However, the positive BAIiWUE relationship found for beech suggests an enhanced beech growth in drought-prone sites due to improved water use.4. Synthesis. Complementarity may enhance growth in mixed forests. However, water scarcity can constrict light-related complementarity for shade intolerant species (Scots pine) in drought-prone sites. Basal area increment-intrinsic water-use efficiency relationships were negative for Scots pine and positive for European beech. These contrasting behaviours have got implications for coping with the expected increasing drought events in Scots pine-European beech mixtures located near ecological limit of the two species. Complementarity effects between tree species should be considered to avoid overestimating the degree of future carbon uptake by mixed conifer¿broadleaf forests.
publishDate	2018
dc.date.none.fl_str_mv	2018
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion
format	article
status_str	acceptedVersion
dc.identifier.none.fl_str_mv	https://hdl.handle.net/2454/47385
url	https://hdl.handle.net/2454/47385
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
dc.relation.none.fl_str_mv	info:eu-repo/grantAgreement/MICINN//RYC-2011-08082 info:eu-repo/grantAgreement/MINECO//AGL2012-33465 info:eu-repo/grantAgreement/MINECO//BES-2013-066705 info:eu-repo/grantAgreement/European Commission/FP7/326718
dc.rights.none.fl_str_mv	© 2017 The Authors © 2017 British Ecological Society info:eu-repo/semantics/openAccess
rights_invalid_str_mv	© 2017 The Authors © 2017 British Ecological Society
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.publisher.none.fl_str_mv	Wiley British Ecological Society
publisher.none.fl_str_mv	Wiley British Ecological Society
dc.source.none.fl_str_mv	reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname:Universidad Pública de Navarra
instname_str	Universidad Pública de Navarra
reponame_str	Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection	Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score	15,81155

Tree-to-tree competition in mixed European beech-Scots pine forests has different impacts on growth and water-use efficiency depending on site condition.

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