Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover

Subtropical Argentinean Chaco forests have been severely deforested and fragmented due to agriculture during the last six decades. The most affected forests are located in areas that are most favorable for crops. This is the case of the semi-deciduous "bosque de tres quebrachos" (three que...

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Detalhes bibliográficos
Autores: Torrella, Sebastián, Ginzburg, Rubén, Adamoli, Jorge Miguel, Galetto, Leonardo
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2013
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositório:CONICET Digital (CONICET)
Idioma:inglês
OAI Identifier:oai:ri.conicet.gov.ar:11336/12655
Acesso em linha:http://hdl.handle.net/11336/12655
Access Level:Acceso aberto
Palavra-chave:Forest Fragmentation
Land Use Changes
Chaco Forest
Tree Recruitment
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
title Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
spellingShingle Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
Torrella, Sebastián
Forest Fragmentation
Land Use Changes
Chaco Forest
Tree Recruitment
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
title_full Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
title_fullStr Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
title_full_unstemmed Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
title_sort Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover
dc.creator.none.fl_str_mv Torrella, Sebastián
Ginzburg, Rubén
Adamoli, Jorge Miguel
Galetto, Leonardo
author Torrella, Sebastián
author_facet Torrella, Sebastián
Ginzburg, Rubén
Adamoli, Jorge Miguel
Galetto, Leonardo
author_role author
author2 Ginzburg, Rubén
Adamoli, Jorge Miguel
Galetto, Leonardo
author2_role author
author
author
dc.subject.none.fl_str_mv Forest Fragmentation
Land Use Changes
Chaco Forest
Tree Recruitment
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic Forest Fragmentation
Land Use Changes
Chaco Forest
Tree Recruitment
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description Subtropical Argentinean Chaco forests have been severely deforested and fragmented due to agriculture during the last six decades. The most affected forests are located in areas that are most favorable for crops. This is the case of the semi-deciduous "bosque de tres quebrachos" (three quebrachos forest) in southwest of Chaco Province (Argentina), where this study was carried out. The aim of this work was to analyze the fragmentation process, considering spatial (fragments and landscape levels) and temporal (land use changes) scales, studying the effects on the forest structure (density and basal area) and tree recruitment. All trees (adults and saplings) were recorded and measured in 112 plots (400 m2) distributed in 28 forest fragments (0.9-160 ha) located at four different landscape samples (4500 ha) in one environmentally homogeneous zone (72,804 ha). The four landscape samples have different current forest cover (low/high) and different land use history (low/high). Using linear mixed models, we evaluated the effects of current and historic fragment size, landscape forest cover and land use changes on the density and basal area at stand level, and considering the two different strata (upper and middle). Results showed that fragmentation did not severely affect the structure of the older age classes of trees in the remaining fragments but affect the tree recruitment, which could influence over the ability of the forest to perpetuate itself. We found positive relationships between sapling density and fragment size for the tree species of middle stratum, and between sapling density and forest cover at landscape level for the species of upper stratum. Regarding adults, we found a negative relationship between density and historic fragment size, probably related to the past timber harvesting. We concluded that even small fragments of three quebrachos forest and those located in highly deforested landscapes have high conservation value since their structure does not differ from that of the larger fragments or landscapes with higher forest cover. Our results reveal the importance of considering landscape and fragment scales simultaneously to better understand the fragmentation process and improve the recommendations for the management of fragmented landscapes.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
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/11336/12655
Torrella, Sebastián; Ginzburg, Rubén; Adamoli, Jorge Miguel; Galetto, Leonardo; Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover; Elsevier Science; Forest Ecology And Management; 307; 5-2013; 147-154
0378-1127
url http://hdl.handle.net/11336/12655
identifier_str_mv Torrella, Sebastián; Ginzburg, Rubén; Adamoli, Jorge Miguel; Galetto, Leonardo; Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover; Elsevier Science; Forest Ecology And Management; 307; 5-2013; 147-154
0378-1127
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.foreco.2013.07.016
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378112713004490
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
_version_ 1799196470843277312
spelling Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest coverTorrella, SebastiánGinzburg, RubénAdamoli, Jorge MiguelGaletto, LeonardoForest FragmentationLand Use ChangesChaco ForestTree Recruitmenthttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Subtropical Argentinean Chaco forests have been severely deforested and fragmented due to agriculture during the last six decades. The most affected forests are located in areas that are most favorable for crops. This is the case of the semi-deciduous "bosque de tres quebrachos" (three quebrachos forest) in southwest of Chaco Province (Argentina), where this study was carried out. The aim of this work was to analyze the fragmentation process, considering spatial (fragments and landscape levels) and temporal (land use changes) scales, studying the effects on the forest structure (density and basal area) and tree recruitment. All trees (adults and saplings) were recorded and measured in 112 plots (400 m2) distributed in 28 forest fragments (0.9-160 ha) located at four different landscape samples (4500 ha) in one environmentally homogeneous zone (72,804 ha). The four landscape samples have different current forest cover (low/high) and different land use history (low/high). Using linear mixed models, we evaluated the effects of current and historic fragment size, landscape forest cover and land use changes on the density and basal area at stand level, and considering the two different strata (upper and middle). Results showed that fragmentation did not severely affect the structure of the older age classes of trees in the remaining fragments but affect the tree recruitment, which could influence over the ability of the forest to perpetuate itself. We found positive relationships between sapling density and fragment size for the tree species of middle stratum, and between sapling density and forest cover at landscape level for the species of upper stratum. Regarding adults, we found a negative relationship between density and historic fragment size, probably related to the past timber harvesting. We concluded that even small fragments of three quebrachos forest and those located in highly deforested landscapes have high conservation value since their structure does not differ from that of the larger fragments or landscapes with higher forest cover. Our results reveal the importance of considering landscape and fragment scales simultaneously to better understand the fragmentation process and improve the recommendations for the management of fragmented landscapes.Fil: Torrella, Sebastián. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; ArgentinaFil: Ginzburg, Rubén. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; ArgentinaFil: Adamoli, Jorge Miguel. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Galetto, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); ArgentinaElsevier Science2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12655Torrella, Sebastián; Ginzburg, Rubén; Adamoli, Jorge Miguel; Galetto, Leonardo; Changes in forest structure and tree recruitment in Argentinean Chaco: Effects of fragment size and landscape forest cover; Elsevier Science; Forest Ecology And Management; 307; 5-2013; 147-1540378-1127enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.foreco.2013.07.016info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378112713004490info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:29:03Zoai:ri.conicet.gov.ar:11336/12655instacron: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 14:29:03.476CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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