Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions

Iberian dehesas and montados are agroforestry systems protected by the European Habitats Directive due to high levels of biological diversity associated to their savannah-like structure. Tree scattering in dehesas, montados and other agroforestry systems is, however, known to compromise tree regener...

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Detalles Bibliográficos
Autores: Díaz, Mario, Sánchez Mejía, Teresa, Morán López, Teresa
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/183585
Acceso en línea:http://hdl.handle.net/11336/183585
Access Level:acceso abierto
Palabra clave:CLIMATE CHANGE
DEHESA
DROUGHT
LANDSCAPE-SCALE MANAGEMENT
MONTADO
REGENERATION CYCLE
TREE SCATTERING
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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spelling Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic ConditionsDíaz, MarioSánchez Mejía, TeresaMorán López, TeresaCLIMATE CHANGEDEHESADROUGHTLANDSCAPE-SCALE MANAGEMENTMONTADOREGENERATION CYCLETREE SCATTERINGhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Iberian dehesas and montados are agroforestry systems protected by the European Habitats Directive due to high levels of biological diversity associated to their savannah-like structure. Tree scattering in dehesas, montados and other agroforestry systems is, however, known to compromise tree regeneration, although recent work suggests that it may protect tree populations from climate warming by alleviating plant-plant competition. We analyze how climatic conditions, tree isolation and their interactions influence the outcomes of regeneration stages, from flower production to early seedling establishment, using data gathered during the long-term monitoring (2001–2018) of ca. 300 Holm oak Quercus ilex trees located in central Spain. Holm oak reproductive effort, predispersal seed losses, and early seedling recruitment were sensitive to climate change, especially to year-round drought. Effort and early seedling recruitment decreased, while abortion and predispersal seed predation increased, with higher drought intensity. Spring warming increases pollination effectiveness, but had no further effect on acorn crops. Forest clearing seemed to have little scope to ameliorate these negative effects, as shown by weak or no interactive effects between the spatial configuration of trees (cover or isolation) and climate variables (spring temperature or drought intensity). Forest opening aimed at decreasing adult tree mortality under climate change scenarios would then have little or no effects on tree recruitment. Landscape-scale rotations alternating shrub encroachment and thinning along periods adapted to changing climate are proposed as the main management option to preserve both oak forests and dehesas in the long term.Fil: Díaz, Mario. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; EspañaFil: Sánchez Mejía, Teresa. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; EspañaFil: Morán López, Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFrontiers Media2021-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/183585Díaz, Mario; Sánchez Mejía, Teresa; Morán López, Teresa; Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions; Frontiers Media; Frontiers in Ecology and Evolution; 9; 3-2021; 1-112296-701XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fevo.2021.640143/fullinfo:eu-repo/semantics/altIdentifier/doi/10.3389/fevo.2021.640143info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:09:55Zoai:ri.conicet.gov.ar:11336/183585instacron: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:34982024-05-08 14:09:55.808CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
title Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
spellingShingle Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
Díaz, Mario
CLIMATE CHANGE
DEHESA
DROUGHT
LANDSCAPE-SCALE MANAGEMENT
MONTADO
REGENERATION CYCLE
TREE SCATTERING
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
title_full Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
title_fullStr Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
title_full_unstemmed Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
title_sort Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions
dc.creator.none.fl_str_mv Díaz, Mario
Sánchez Mejía, Teresa
Morán López, Teresa
author Díaz, Mario
author_facet Díaz, Mario
Sánchez Mejía, Teresa
Morán López, Teresa
author_role author
author2 Sánchez Mejía, Teresa
Morán López, Teresa
author2_role author
author
dc.subject.none.fl_str_mv CLIMATE CHANGE
DEHESA
DROUGHT
LANDSCAPE-SCALE MANAGEMENT
MONTADO
REGENERATION CYCLE
TREE SCATTERING
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic CLIMATE CHANGE
DEHESA
DROUGHT
LANDSCAPE-SCALE MANAGEMENT
MONTADO
REGENERATION CYCLE
TREE SCATTERING
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description Iberian dehesas and montados are agroforestry systems protected by the European Habitats Directive due to high levels of biological diversity associated to their savannah-like structure. Tree scattering in dehesas, montados and other agroforestry systems is, however, known to compromise tree regeneration, although recent work suggests that it may protect tree populations from climate warming by alleviating plant-plant competition. We analyze how climatic conditions, tree isolation and their interactions influence the outcomes of regeneration stages, from flower production to early seedling establishment, using data gathered during the long-term monitoring (2001–2018) of ca. 300 Holm oak Quercus ilex trees located in central Spain. Holm oak reproductive effort, predispersal seed losses, and early seedling recruitment were sensitive to climate change, especially to year-round drought. Effort and early seedling recruitment decreased, while abortion and predispersal seed predation increased, with higher drought intensity. Spring warming increases pollination effectiveness, but had no further effect on acorn crops. Forest clearing seemed to have little scope to ameliorate these negative effects, as shown by weak or no interactive effects between the spatial configuration of trees (cover or isolation) and climate variables (spring temperature or drought intensity). Forest opening aimed at decreasing adult tree mortality under climate change scenarios would then have little or no effects on tree recruitment. Landscape-scale rotations alternating shrub encroachment and thinning along periods adapted to changing climate are proposed as the main management option to preserve both oak forests and dehesas in the long term.
publishDate 2021
dc.date.none.fl_str_mv 2021-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/183585
Díaz, Mario; Sánchez Mejía, Teresa; Morán López, Teresa; Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions; Frontiers Media; Frontiers in Ecology and Evolution; 9; 3-2021; 1-11
2296-701X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/183585
identifier_str_mv Díaz, Mario; Sánchez Mejía, Teresa; Morán López, Teresa; Long-Term Tree Regeneration of Fragmented Agroforestry Systems Under Varying Climatic Conditions; Frontiers Media; Frontiers in Ecology and Evolution; 9; 3-2021; 1-11
2296-701X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fevo.2021.640143/full
info:eu-repo/semantics/altIdentifier/doi/10.3389/fevo.2021.640143
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
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score 15,223283

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