Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient

Detalhes bibliográficos
Autor(a) principal: Salgueiro, Pedro
Data de Publicação: 2018
Outros Autores: Mira, António, Rabaça, João E., Santos, Sara M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/24556
https://doi.org/10.1016/j.ecolind.2018.01.008
Resumo: Landscapes are showing increased fragmentation and habitat loss due to land-use conversion and intensification, leading to species-poor and homogeneous communities. The identification of ecological thresholds above which major changes in community composition take place, may prevent the critical downfall of biodiversity while improving the effectiveness of conservation, resource management and restoration practices. In this study, we provide a new insight on how species distribute along a highly variegated agro-ecosystem in the Mediterranean region. We aim to define the thresholds of occurrence of a bird community inhabiting a tree canopy gradient, and determine the patterns of community change. We fit Huisman-Olff-Fresco models to bird occurrence data (assuming non-linear responses) to identify species-specific responses to the gradient, species richness, and turnover patterns. The tree canopy gradient is responsible for major changes in bird community likely related to the variation of the tree stratum and canopy enclosure which reflect different niche segregation opportunities. Maximum species richness was reached at 10% canopy cover while total turnover rate was higher than expected from a null model up to 10% canopy cover. Ecological thresholds can be used as indicators of specific resource limits responsible for changes in community composition and species occurrence, identifying where populations may be more sensitive. Choosing a single management scheme will invariably result in winners and losers, but optimal levels of management can be explored in order to maximize species diversity across Mediterranean agroecosystems.
id RCAP_b2fff0257374b86bdb5e19bbf91110a6
oai_identifier_str oai:dspace.uevora.pt:10174/24556
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradientEcological thresholdsBird communityTurnover patternsTree canopy cover gradientAgroecosystemsVariegated landscapeHuisman-Olff-Fresco modelsLandscapes are showing increased fragmentation and habitat loss due to land-use conversion and intensification, leading to species-poor and homogeneous communities. The identification of ecological thresholds above which major changes in community composition take place, may prevent the critical downfall of biodiversity while improving the effectiveness of conservation, resource management and restoration practices. In this study, we provide a new insight on how species distribute along a highly variegated agro-ecosystem in the Mediterranean region. We aim to define the thresholds of occurrence of a bird community inhabiting a tree canopy gradient, and determine the patterns of community change. We fit Huisman-Olff-Fresco models to bird occurrence data (assuming non-linear responses) to identify species-specific responses to the gradient, species richness, and turnover patterns. The tree canopy gradient is responsible for major changes in bird community likely related to the variation of the tree stratum and canopy enclosure which reflect different niche segregation opportunities. Maximum species richness was reached at 10% canopy cover while total turnover rate was higher than expected from a null model up to 10% canopy cover. Ecological thresholds can be used as indicators of specific resource limits responsible for changes in community composition and species occurrence, identifying where populations may be more sensitive. Choosing a single management scheme will invariably result in winners and losers, but optimal levels of management can be explored in order to maximize species diversity across Mediterranean agroecosystems.Elsevier - Ecological Indicators2019-02-12T11:24:24Z2019-02-122018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/24556https://doi.org/10.1016/j.ecolind.2018.01.008http://hdl.handle.net/10174/24556https://doi.org/10.1016/j.ecolind.2018.01.008engSalgueiro, P., Mira, A., Rabaça, J.E. & Santos, S. 2018. Identifying critical thresholds to guide management practices in agro-ecosystems: Insights from bird community response to an open grassland-to-forest gradient. Ecological Indicators, 88: 2015-213.ICAAMpas@uevora.ptamira@uevora.ptjrabaca@uevora.ptsmsantos@uevora.pt221Salgueiro, PedroMira, AntónioRabaça, João E.Santos, Sara M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:17:05Zoai:dspace.uevora.pt:10174/24556Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:14:55.298126Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
title Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
spellingShingle Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
Salgueiro, Pedro
Ecological thresholds
Bird community
Turnover patterns
Tree canopy cover gradient
Agroecosystems
Variegated landscape
Huisman-Olff-Fresco models
title_short Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
title_full Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
title_fullStr Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
title_full_unstemmed Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
title_sort Identifying critical thresholds to guide management practices in agroecosystems: Insights from bird community response to an open grassland-to-forest gradient
author Salgueiro, Pedro
author_facet Salgueiro, Pedro
Mira, António
Rabaça, João E.
Santos, Sara M.
author_role author
author2 Mira, António
Rabaça, João E.
Santos, Sara M.
author2_role author
author
author
dc.contributor.author.fl_str_mv Salgueiro, Pedro
Mira, António
Rabaça, João E.
Santos, Sara M.
dc.subject.por.fl_str_mv Ecological thresholds
Bird community
Turnover patterns
Tree canopy cover gradient
Agroecosystems
Variegated landscape
Huisman-Olff-Fresco models
topic Ecological thresholds
Bird community
Turnover patterns
Tree canopy cover gradient
Agroecosystems
Variegated landscape
Huisman-Olff-Fresco models
description Landscapes are showing increased fragmentation and habitat loss due to land-use conversion and intensification, leading to species-poor and homogeneous communities. The identification of ecological thresholds above which major changes in community composition take place, may prevent the critical downfall of biodiversity while improving the effectiveness of conservation, resource management and restoration practices. In this study, we provide a new insight on how species distribute along a highly variegated agro-ecosystem in the Mediterranean region. We aim to define the thresholds of occurrence of a bird community inhabiting a tree canopy gradient, and determine the patterns of community change. We fit Huisman-Olff-Fresco models to bird occurrence data (assuming non-linear responses) to identify species-specific responses to the gradient, species richness, and turnover patterns. The tree canopy gradient is responsible for major changes in bird community likely related to the variation of the tree stratum and canopy enclosure which reflect different niche segregation opportunities. Maximum species richness was reached at 10% canopy cover while total turnover rate was higher than expected from a null model up to 10% canopy cover. Ecological thresholds can be used as indicators of specific resource limits responsible for changes in community composition and species occurrence, identifying where populations may be more sensitive. Choosing a single management scheme will invariably result in winners and losers, but optimal levels of management can be explored in order to maximize species diversity across Mediterranean agroecosystems.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01T00:00:00Z
2019-02-12T11:24:24Z
2019-02-12
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 http://hdl.handle.net/10174/24556
https://doi.org/10.1016/j.ecolind.2018.01.008
http://hdl.handle.net/10174/24556
https://doi.org/10.1016/j.ecolind.2018.01.008
url http://hdl.handle.net/10174/24556
https://doi.org/10.1016/j.ecolind.2018.01.008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Salgueiro, P., Mira, A., Rabaça, J.E. & Santos, S. 2018. Identifying critical thresholds to guide management practices in agro-ecosystems: Insights from bird community response to an open grassland-to-forest gradient. Ecological Indicators, 88: 2015-213.
ICAAM
pas@uevora.pt
amira@uevora.pt
jrabaca@uevora.pt
smsantos@uevora.pt
221
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier - Ecological Indicators
publisher.none.fl_str_mv Elsevier - Ecological Indicators
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799136630993321984