Population fragmentation and extinction in the Iberian lynx

We studied the relationship between extinction frequencies of Iberian lynx subpopulations (Lynx pardinus) and their size and isolation during a 35-year period of strong geographic range contraction. At the end of this period there were fewer fragmentation events, fewer lynx populations of small size...

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Detalles Bibliográficos
Autores: Rodríguez, Alejandro, Delibes, M.
Tipo de recurso: artículo
Fecha de publicación:2003
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/41346
Acceso en línea:http://hdl.handle.net/10261/41346
Access Level:acceso abierto
Palabra clave:Extinction
Fragmentation
Geographic range contraction
Lynx pardinus
Metapopulation dynamics
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spelling Population fragmentation and extinction in the Iberian lynxRodríguez, AlejandroDelibes, M.ExtinctionFragmentationGeographic range contractionLynx pardinusMetapopulation dynamicsWe studied the relationship between extinction frequencies of Iberian lynx subpopulations (Lynx pardinus) and their size and isolation during a 35-year period of strong geographic range contraction. At the end of this period there were fewer fragmentation events, fewer lynx populations of small size, and less isolation between them, than in simulated geographic ranges derived from a random distribution of local extinctions. Only small populations occupying < 500 km2 went extinct. Local extinction in large, self- sustainable populations probably resulted from the sole action of deterministic factors, e.g. widespread prey decline. As compared with large populations, small ones experienced increased contraction per unit occupied area, which may reflect demographic unstability. The consistent effect of isolation on extinction suggests that such unstability was often prompted by reduced immigra- tion and the subsequent disruption of metapopulation equilibrium. Several practical recommendations could be derived. Provided that habitat quality was adequate, a lynx population should avoid extinction within 35 years if it occupied an area of at least 500 km2. The persistence of small populations will also be enhanced by minimizing the distances to neighbouring populations within 30 km, and by maximizing the area occupied by these neighbours. Therefore, habitat management, or any other restoration action, directed to expand the area occupied by a small lynx population should be best located at points of its boundaries oriented towards other existing nearby populations.Peer reviewedElsevier201120112003info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/41346reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/S0006-3207(02)00158-1info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/413462026-05-22T06:33:51Z
dc.title.none.fl_str_mv Population fragmentation and extinction in the Iberian lynx
title Population fragmentation and extinction in the Iberian lynx
spellingShingle Population fragmentation and extinction in the Iberian lynx
Rodríguez, Alejandro
Extinction
Fragmentation
Geographic range contraction
Lynx pardinus
Metapopulation dynamics
title_short Population fragmentation and extinction in the Iberian lynx
title_full Population fragmentation and extinction in the Iberian lynx
title_fullStr Population fragmentation and extinction in the Iberian lynx
title_full_unstemmed Population fragmentation and extinction in the Iberian lynx
title_sort Population fragmentation and extinction in the Iberian lynx
dc.creator.none.fl_str_mv Rodríguez, Alejandro
Delibes, M.
author Rodríguez, Alejandro
author_facet Rodríguez, Alejandro
Delibes, M.
author_role author
author2 Delibes, M.
author2_role author
dc.subject.none.fl_str_mv Extinction
Fragmentation
Geographic range contraction
Lynx pardinus
Metapopulation dynamics
topic Extinction
Fragmentation
Geographic range contraction
Lynx pardinus
Metapopulation dynamics
description We studied the relationship between extinction frequencies of Iberian lynx subpopulations (Lynx pardinus) and their size and isolation during a 35-year period of strong geographic range contraction. At the end of this period there were fewer fragmentation events, fewer lynx populations of small size, and less isolation between them, than in simulated geographic ranges derived from a random distribution of local extinctions. Only small populations occupying < 500 km2 went extinct. Local extinction in large, self- sustainable populations probably resulted from the sole action of deterministic factors, e.g. widespread prey decline. As compared with large populations, small ones experienced increased contraction per unit occupied area, which may reflect demographic unstability. The consistent effect of isolation on extinction suggests that such unstability was often prompted by reduced immigra- tion and the subsequent disruption of metapopulation equilibrium. Several practical recommendations could be derived. Provided that habitat quality was adequate, a lynx population should avoid extinction within 35 years if it occupied an area of at least 500 km2. The persistence of small populations will also be enhanced by minimizing the distances to neighbouring populations within 30 km, and by maximizing the area occupied by these neighbours. Therefore, habitat management, or any other restoration action, directed to expand the area occupied by a small lynx population should be best located at points of its boundaries oriented towards other existing nearby populations.
publishDate 2003
dc.date.none.fl_str_mv 2003
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/41346
url http://hdl.handle.net/10261/41346
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/S0006-3207(02)00158-1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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