Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations

Detalhes bibliográficos
Autor(a) principal: Reino, Luís
Data de Publicação: 2009
Outros Autores: Beja, Pedro, Osborne, Patrick, Morgado, Rui, Fabião, António, Rotenberry, John
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/9019
Resumo: Afforestation often causes direct habitat losses for farmland birds of conservation concern, but it is uncertain whether negative effects also extend significantly into adjacent open land. Information is thus required on how these species react to wooded edges, and how their responses are affected by edge and landscape characteristics. These issues were examined in Mediterranean arable farmland, using bird counts at 0, 100, 200, 300 and >300 m from oak, pine and eucalyptus edges, embedded in landscapes with variable amounts and spatial configurations of forest plantations. Bird diversity declined away from edges, including that of woodland, farmland and ground-nesting birds. Positive edge responses were also found for overall and woodland bird abundances, and for five of the nine most widespread and abundant species (Galerida larks, stonechat, linnet, goldfinch and corn bunting). Strong negative edge effects were only recorded for steppe birds, with reduced abundances near edges of calandra larks and short-toed larks, but not of little bustards and tawny pipits. Edge contrast affected the magnitude of edge effects, with a tendency for stronger responses to old and tall eucalyptus plantations (hard edges) than to young and short oak plantations (soft edges). There were also species-specific interactions between edge and fragmentation effects, with positive edge responses tending to be strongest in less fragmented landscapes, whereas steppe birds tended to increase faster away from edges and to reach the highest species richness and abundances in large arable patches. Results suggest that forest plantations may increase overall bird diversity and abundance in adjacent farmland, at the expenses of steppe birds of conservation concern
id RCAP_d603aa56a8b1bad05ec4370c0a64c350
oai_identifier_str oai:www.repository.utl.pt:10400.5/9019
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantationsafforestationedge effectslandscape managementgrasslandmediterranean farmlandsteppe birdsAfforestation often causes direct habitat losses for farmland birds of conservation concern, but it is uncertain whether negative effects also extend significantly into adjacent open land. Information is thus required on how these species react to wooded edges, and how their responses are affected by edge and landscape characteristics. These issues were examined in Mediterranean arable farmland, using bird counts at 0, 100, 200, 300 and >300 m from oak, pine and eucalyptus edges, embedded in landscapes with variable amounts and spatial configurations of forest plantations. Bird diversity declined away from edges, including that of woodland, farmland and ground-nesting birds. Positive edge responses were also found for overall and woodland bird abundances, and for five of the nine most widespread and abundant species (Galerida larks, stonechat, linnet, goldfinch and corn bunting). Strong negative edge effects were only recorded for steppe birds, with reduced abundances near edges of calandra larks and short-toed larks, but not of little bustards and tawny pipits. Edge contrast affected the magnitude of edge effects, with a tendency for stronger responses to old and tall eucalyptus plantations (hard edges) than to young and short oak plantations (soft edges). There were also species-specific interactions between edge and fragmentation effects, with positive edge responses tending to be strongest in less fragmented landscapes, whereas steppe birds tended to increase faster away from edges and to reach the highest species richness and abundances in large arable patches. Results suggest that forest plantations may increase overall bird diversity and abundance in adjacent farmland, at the expenses of steppe birds of conservation concernElsevierRepositório da Universidade de LisboaReino, LuísBeja, PedroOsborne, PatrickMorgado, RuiFabião, AntónioRotenberry, John2015-07-20T15:47:24Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/9019eng"Biological Conservation". ISSN 0006-3207. 142 (2009) 824-83810.1016/j.biocon.2008.12.011info: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:RCAAP2023-03-06T14:39:32Zoai:www.repository.utl.pt:10400.5/9019Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:55:52.166382Repositório 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 Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
title Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
spellingShingle Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
Reino, Luís
afforestation
edge effects
landscape management
grassland
mediterranean farmland
steppe birds
title_short Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
title_full Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
title_fullStr Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
title_full_unstemmed Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
title_sort Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations
author Reino, Luís
author_facet Reino, Luís
Beja, Pedro
Osborne, Patrick
Morgado, Rui
Fabião, António
Rotenberry, John
author_role author
author2 Beja, Pedro
Osborne, Patrick
Morgado, Rui
Fabião, António
Rotenberry, John
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Reino, Luís
Beja, Pedro
Osborne, Patrick
Morgado, Rui
Fabião, António
Rotenberry, John
dc.subject.por.fl_str_mv afforestation
edge effects
landscape management
grassland
mediterranean farmland
steppe birds
topic afforestation
edge effects
landscape management
grassland
mediterranean farmland
steppe birds
description Afforestation often causes direct habitat losses for farmland birds of conservation concern, but it is uncertain whether negative effects also extend significantly into adjacent open land. Information is thus required on how these species react to wooded edges, and how their responses are affected by edge and landscape characteristics. These issues were examined in Mediterranean arable farmland, using bird counts at 0, 100, 200, 300 and >300 m from oak, pine and eucalyptus edges, embedded in landscapes with variable amounts and spatial configurations of forest plantations. Bird diversity declined away from edges, including that of woodland, farmland and ground-nesting birds. Positive edge responses were also found for overall and woodland bird abundances, and for five of the nine most widespread and abundant species (Galerida larks, stonechat, linnet, goldfinch and corn bunting). Strong negative edge effects were only recorded for steppe birds, with reduced abundances near edges of calandra larks and short-toed larks, but not of little bustards and tawny pipits. Edge contrast affected the magnitude of edge effects, with a tendency for stronger responses to old and tall eucalyptus plantations (hard edges) than to young and short oak plantations (soft edges). There were also species-specific interactions between edge and fragmentation effects, with positive edge responses tending to be strongest in less fragmented landscapes, whereas steppe birds tended to increase faster away from edges and to reach the highest species richness and abundances in large arable patches. Results suggest that forest plantations may increase overall bird diversity and abundance in adjacent farmland, at the expenses of steppe birds of conservation concern
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-01-01T00:00:00Z
2015-07-20T15:47:24Z
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/10400.5/9019
url http://hdl.handle.net/10400.5/9019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Biological Conservation". ISSN 0006-3207. 142 (2009) 824-838
10.1016/j.biocon.2008.12.011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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_ 1799131040112967680