Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina

Autores
Lisnizer, Nora; Garcia Borboroglu, Jorge Pablo; Yorio, Pablo Martin
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Many populations of seabird species with opportunistic or generalist feeding habits have expanded worldwide, possibly because they are using additional food resources provided by human activities. The Kelp Gull (Larus dominicanus) is a generalist feeder that often feeds on urban and fish waste and its populations have been expanding in several regions of the southern hemisphere. In Patagonia, Argentina, it is the most abundant species of gull. However, population trends have been reported for only a few colonies and there has been no evaluation of population changes at a regional scale. In this study we provide an update on the distribution and size of Kelp Gull colonies along 1800km of coastline of northern Patagonia, and assess population trends over a period of 15 years (1994-2008) at different spatial scales (colony, coastal sector, region). In northern Patagonia, Kelp Gulls currently breed in 68 colonies, which range in size from a few to 11000 breeding pairs. Ten new sites were colonised in the study period. Most colonies (74%) are increasing and the overall population increased by 37% (from 52784 to 72616 pairs), at an annual growth rate of 2.7%. Two of the four coastal sectors showed significant annual increases (5%), whereas the other two remained stable. Our results confirm the expansion of populations of Kelp Gulls along a long section of the coast of northern Patagonia, although the observed trends varied with the spatial scale considered. © 2011 Royal Australasian Ornithologists Union.
Fil: Lisnizer, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. University of Washington; Estados Unidos
Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Argentina
Materia
Breeding Numbers
Larus Dominicanus
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78973
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, ArgentinaLisnizer, NoraGarcia Borboroglu, Jorge PabloYorio, Pablo MartinBreeding NumbersLarus Dominicanushttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Many populations of seabird species with opportunistic or generalist feeding habits have expanded worldwide, possibly because they are using additional food resources provided by human activities. The Kelp Gull (Larus dominicanus) is a generalist feeder that often feeds on urban and fish waste and its populations have been expanding in several regions of the southern hemisphere. In Patagonia, Argentina, it is the most abundant species of gull. However, population trends have been reported for only a few colonies and there has been no evaluation of population changes at a regional scale. In this study we provide an update on the distribution and size of Kelp Gull colonies along 1800km of coastline of northern Patagonia, and assess population trends over a period of 15 years (1994-2008) at different spatial scales (colony, coastal sector, region). In northern Patagonia, Kelp Gulls currently breed in 68 colonies, which range in size from a few to 11000 breeding pairs. Ten new sites were colonised in the study period. Most colonies (74%) are increasing and the overall population increased by 37% (from 52784 to 72616 pairs), at an annual growth rate of 2.7%. Two of the four coastal sectors showed significant annual increases (5%), whereas the other two remained stable. Our results confirm the expansion of populations of Kelp Gulls along a long section of the coast of northern Patagonia, although the observed trends varied with the spatial scale considered. © 2011 Royal Australasian Ornithologists Union.Fil: Lisnizer, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. University of Washington; Estados UnidosFil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; ArgentinaCsiro Publishing2011-08info: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/11336/78973Lisnizer, Nora; Garcia Borboroglu, Jorge Pablo; Yorio, Pablo Martin; Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina; Csiro Publishing; Emu; 111; 3; 8-2011; 259-2670158-4197CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1071/MU11001info:eu-repo/semantics/altIdentifier/doi/10.1071/MU11001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:24:16Zoai:ri.conicet.gov.ar:11336/78973instacron: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:34982025-09-17 11:24:16.717CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
title Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
spellingShingle Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
Lisnizer, Nora
Breeding Numbers
Larus Dominicanus
title_short Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
title_full Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
title_fullStr Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
title_full_unstemmed Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
title_sort Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina
dc.creator.none.fl_str_mv Lisnizer, Nora
Garcia Borboroglu, Jorge Pablo
Yorio, Pablo Martin
author Lisnizer, Nora
author_facet Lisnizer, Nora
Garcia Borboroglu, Jorge Pablo
Yorio, Pablo Martin
author_role author
author2 Garcia Borboroglu, Jorge Pablo
Yorio, Pablo Martin
author2_role author
author
dc.subject.none.fl_str_mv Breeding Numbers
Larus Dominicanus
topic Breeding Numbers
Larus Dominicanus
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Many populations of seabird species with opportunistic or generalist feeding habits have expanded worldwide, possibly because they are using additional food resources provided by human activities. The Kelp Gull (Larus dominicanus) is a generalist feeder that often feeds on urban and fish waste and its populations have been expanding in several regions of the southern hemisphere. In Patagonia, Argentina, it is the most abundant species of gull. However, population trends have been reported for only a few colonies and there has been no evaluation of population changes at a regional scale. In this study we provide an update on the distribution and size of Kelp Gull colonies along 1800km of coastline of northern Patagonia, and assess population trends over a period of 15 years (1994-2008) at different spatial scales (colony, coastal sector, region). In northern Patagonia, Kelp Gulls currently breed in 68 colonies, which range in size from a few to 11000 breeding pairs. Ten new sites were colonised in the study period. Most colonies (74%) are increasing and the overall population increased by 37% (from 52784 to 72616 pairs), at an annual growth rate of 2.7%. Two of the four coastal sectors showed significant annual increases (5%), whereas the other two remained stable. Our results confirm the expansion of populations of Kelp Gulls along a long section of the coast of northern Patagonia, although the observed trends varied with the spatial scale considered. © 2011 Royal Australasian Ornithologists Union.
Fil: Lisnizer, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. University of Washington; Estados Unidos
Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Argentina
description Many populations of seabird species with opportunistic or generalist feeding habits have expanded worldwide, possibly because they are using additional food resources provided by human activities. The Kelp Gull (Larus dominicanus) is a generalist feeder that often feeds on urban and fish waste and its populations have been expanding in several regions of the southern hemisphere. In Patagonia, Argentina, it is the most abundant species of gull. However, population trends have been reported for only a few colonies and there has been no evaluation of population changes at a regional scale. In this study we provide an update on the distribution and size of Kelp Gull colonies along 1800km of coastline of northern Patagonia, and assess population trends over a period of 15 years (1994-2008) at different spatial scales (colony, coastal sector, region). In northern Patagonia, Kelp Gulls currently breed in 68 colonies, which range in size from a few to 11000 breeding pairs. Ten new sites were colonised in the study period. Most colonies (74%) are increasing and the overall population increased by 37% (from 52784 to 72616 pairs), at an annual growth rate of 2.7%. Two of the four coastal sectors showed significant annual increases (5%), whereas the other two remained stable. Our results confirm the expansion of populations of Kelp Gulls along a long section of the coast of northern Patagonia, although the observed trends varied with the spatial scale considered. © 2011 Royal Australasian Ornithologists Union.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
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/11336/78973
Lisnizer, Nora; Garcia Borboroglu, Jorge Pablo; Yorio, Pablo Martin; Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina; Csiro Publishing; Emu; 111; 3; 8-2011; 259-267
0158-4197
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78973
identifier_str_mv Lisnizer, Nora; Garcia Borboroglu, Jorge Pablo; Yorio, Pablo Martin; Spatial and temporal variation in population trends of Kelp Gulls in northern Patagonia, Argentina; Csiro Publishing; Emu; 111; 3; 8-2011; 259-267
0158-4197
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1071/MU11001
info:eu-repo/semantics/altIdentifier/doi/10.1071/MU11001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Csiro Publishing
publisher.none.fl_str_mv Csiro Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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
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score 13.001348

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