Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest

Detalhes bibliográficos
Autor(a) principal: Siqueira, Flávia Freire
Data de Publicação: 2021
Outros Autores: Carvalho, Dulcineia de, Rhodes, Jonathan, Archibald, Carla L., Rezende, Vanessa Leite, Berg, Eduardo van den
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/49900
Resumo: The Atlantic Forest in Brazil is a biodiversity hotspot, yet its diverse ecosystems and species are becoming increasingly threatened by habitat loss and extreme habitat fragmentation. Most habitat patches of Atlantic Forest are dispersed across agricultural landscapes (e.g., grazing and cropping) in relatively small and isolated fragments (80% < 50 ha). Forest fragments < 1 ha, scattered trees in pastures, tree lines on trenches and fences, and remnant riparian forest, collectively called here Small Landscape Elements (SLEs), are very common in this context. While these SLEs make up much of the Atlantic Forests footprint, very little is known about their role or impact on the persistence and conservation of species. In this study, we investigate the role of SLEs on landscape configuration, particularly their contribution toward landscape connectivity of individual species and the genetic flow of species between larger forest fragments. We randomly selected 20 buffers of 707 hectares within a 411,670 hectare area of the Atlantic Forest that was completely covered by forest in the past located in the south of Minas Gerais State, Brazil. The forest cover randomly varied between these buffers. We used graph theory to measure landscape connectivity as the probability of connectivity for different disperser movement types between landscape knots (habitat patches). We used three estimated dispersal distances in the models: pollen disperser insect (50 m), low-mobility seed disperser bird (100 m) and high-mobility seed disperser bird (760 m). The SLEs together increased the probability of connection by roughly 50%, for all model dispersers, if compared to a theoretical baseline landscape containing no SLEs. Of all SLEs, riparian forests contribute the most toward enhancing landscape connectivity. In these highly fragmented landscapes, such as the Atlantic Forest (>70%), the position of SLEs within the landscapes was more important than their respective areas for connectivity. Although the landscapes were deeply fragmented, we showed that the presence of SLEs can increase connectivity and reduce further biodiversity loss in the Atlantic Forest.
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spelling Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic ForestTropical forestLandscape connectivityPrivate land conservationBiodiversity conservationRemote sensing-GISFragmentationHabitat lossFloresta tropicalConectividade da paisagemBiodiversidade - ConservaçãoSensoriamento RemotoSistemas de Informação Geográfica (SIG)Paisagens fragmentadasPerda de habitatThe Atlantic Forest in Brazil is a biodiversity hotspot, yet its diverse ecosystems and species are becoming increasingly threatened by habitat loss and extreme habitat fragmentation. Most habitat patches of Atlantic Forest are dispersed across agricultural landscapes (e.g., grazing and cropping) in relatively small and isolated fragments (80% < 50 ha). Forest fragments < 1 ha, scattered trees in pastures, tree lines on trenches and fences, and remnant riparian forest, collectively called here Small Landscape Elements (SLEs), are very common in this context. While these SLEs make up much of the Atlantic Forests footprint, very little is known about their role or impact on the persistence and conservation of species. In this study, we investigate the role of SLEs on landscape configuration, particularly their contribution toward landscape connectivity of individual species and the genetic flow of species between larger forest fragments. We randomly selected 20 buffers of 707 hectares within a 411,670 hectare area of the Atlantic Forest that was completely covered by forest in the past located in the south of Minas Gerais State, Brazil. The forest cover randomly varied between these buffers. We used graph theory to measure landscape connectivity as the probability of connectivity for different disperser movement types between landscape knots (habitat patches). We used three estimated dispersal distances in the models: pollen disperser insect (50 m), low-mobility seed disperser bird (100 m) and high-mobility seed disperser bird (760 m). The SLEs together increased the probability of connection by roughly 50%, for all model dispersers, if compared to a theoretical baseline landscape containing no SLEs. Of all SLEs, riparian forests contribute the most toward enhancing landscape connectivity. In these highly fragmented landscapes, such as the Atlantic Forest (>70%), the position of SLEs within the landscapes was more important than their respective areas for connectivity. Although the landscapes were deeply fragmented, we showed that the presence of SLEs can increase connectivity and reduce further biodiversity loss in the Atlantic Forest.Frontiers2022-05-09T21:07:40Z2022-05-09T21:07:40Z2021-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSIQUEIRA, F. F. et al. Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest. Frontiers in Ecology and Evolution, [S.I.], v. 9, May 2021. DOI: 10.3389/fevo.2021.614362.http://repositorio.ufla.br/jspui/handle/1/49900Frontiers in Ecology and Evolutionreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessSiqueira, Flávia FreireCarvalho, Dulcineia deRhodes, JonathanArchibald, Carla L.Rezende, Vanessa LeiteBerg, Eduardo van deneng2022-05-09T21:09:02Zoai:localhost:1/49900Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2022-05-09T21:09:02Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
title Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
spellingShingle Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
Siqueira, Flávia Freire
Tropical forest
Landscape connectivity
Private land conservation
Biodiversity conservation
Remote sensing-GIS
Fragmentation
Habitat loss
Floresta tropical
Conectividade da paisagem
Biodiversidade - Conservação
Sensoriamento Remoto
Sistemas de Informação Geográfica (SIG)
Paisagens fragmentadas
Perda de habitat
title_short Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
title_full Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
title_fullStr Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
title_full_unstemmed Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
title_sort Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest
author Siqueira, Flávia Freire
author_facet Siqueira, Flávia Freire
Carvalho, Dulcineia de
Rhodes, Jonathan
Archibald, Carla L.
Rezende, Vanessa Leite
Berg, Eduardo van den
author_role author
author2 Carvalho, Dulcineia de
Rhodes, Jonathan
Archibald, Carla L.
Rezende, Vanessa Leite
Berg, Eduardo van den
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Siqueira, Flávia Freire
Carvalho, Dulcineia de
Rhodes, Jonathan
Archibald, Carla L.
Rezende, Vanessa Leite
Berg, Eduardo van den
dc.subject.por.fl_str_mv Tropical forest
Landscape connectivity
Private land conservation
Biodiversity conservation
Remote sensing-GIS
Fragmentation
Habitat loss
Floresta tropical
Conectividade da paisagem
Biodiversidade - Conservação
Sensoriamento Remoto
Sistemas de Informação Geográfica (SIG)
Paisagens fragmentadas
Perda de habitat
topic Tropical forest
Landscape connectivity
Private land conservation
Biodiversity conservation
Remote sensing-GIS
Fragmentation
Habitat loss
Floresta tropical
Conectividade da paisagem
Biodiversidade - Conservação
Sensoriamento Remoto
Sistemas de Informação Geográfica (SIG)
Paisagens fragmentadas
Perda de habitat
description The Atlantic Forest in Brazil is a biodiversity hotspot, yet its diverse ecosystems and species are becoming increasingly threatened by habitat loss and extreme habitat fragmentation. Most habitat patches of Atlantic Forest are dispersed across agricultural landscapes (e.g., grazing and cropping) in relatively small and isolated fragments (80% < 50 ha). Forest fragments < 1 ha, scattered trees in pastures, tree lines on trenches and fences, and remnant riparian forest, collectively called here Small Landscape Elements (SLEs), are very common in this context. While these SLEs make up much of the Atlantic Forests footprint, very little is known about their role or impact on the persistence and conservation of species. In this study, we investigate the role of SLEs on landscape configuration, particularly their contribution toward landscape connectivity of individual species and the genetic flow of species between larger forest fragments. We randomly selected 20 buffers of 707 hectares within a 411,670 hectare area of the Atlantic Forest that was completely covered by forest in the past located in the south of Minas Gerais State, Brazil. The forest cover randomly varied between these buffers. We used graph theory to measure landscape connectivity as the probability of connectivity for different disperser movement types between landscape knots (habitat patches). We used three estimated dispersal distances in the models: pollen disperser insect (50 m), low-mobility seed disperser bird (100 m) and high-mobility seed disperser bird (760 m). The SLEs together increased the probability of connection by roughly 50%, for all model dispersers, if compared to a theoretical baseline landscape containing no SLEs. Of all SLEs, riparian forests contribute the most toward enhancing landscape connectivity. In these highly fragmented landscapes, such as the Atlantic Forest (>70%), the position of SLEs within the landscapes was more important than their respective areas for connectivity. Although the landscapes were deeply fragmented, we showed that the presence of SLEs can increase connectivity and reduce further biodiversity loss in the Atlantic Forest.
publishDate 2021
dc.date.none.fl_str_mv 2021-05
2022-05-09T21:07:40Z
2022-05-09T21:07:40Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv SIQUEIRA, F. F. et al. Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest. Frontiers in Ecology and Evolution, [S.I.], v. 9, May 2021. DOI: 10.3389/fevo.2021.614362.
http://repositorio.ufla.br/jspui/handle/1/49900
identifier_str_mv SIQUEIRA, F. F. et al. Small landscape elements double connectivity in highly fragmented areas of the brazilian Atlantic Forest. Frontiers in Ecology and Evolution, [S.I.], v. 9, May 2021. DOI: 10.3389/fevo.2021.614362.
url http://repositorio.ufla.br/jspui/handle/1/49900
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Frontiers
publisher.none.fl_str_mv Frontiers
dc.source.none.fl_str_mv Frontiers in Ecology and Evolution
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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