How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi
- Autores
- Millones, Ana; Frere, Esteban
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- For seabirds, nest site features are an important factor that determines reproductive success. During three breeding seasons (2010-2012), we visited two coastal cliff colonies of Red-legged Cormorants halacrocorax gaimardi in the Ría Deseado, Argentina, and studied how nest site characteristics influenced their breeding success. We measured six physical characteristics at 46 nest sites, and we counted the number of fledglings produced each year from each nest (breeding success). We also related nest site temperature and wind exposure with nest site orientation. Breeding success was higher at nest sites with a broad base (greater capacity for holding young) and at nests that were less exposed to winds greater than 25 knots (46.25 km/h), which were sites with a north orientation. The lowest breeding success was observed in nest sites that were exposed to the strongest winds (i.e., sites with a south orientation). Strong winds often blow eggs and chicks away from the nests and increase opportunistic predation by gulls Larus sp. No significant relationship was found between nest site orientation and nest site temperature. Breeding success decreased with the distance to the nearest nest, which agrees with the idea that higher density of reproductive individuals reduces effectiveness of predators. Nest cover, distance from the top of the cliff, and distance from the tide line had no effect on breeding success at this study scale. Our results suggested that nest site haracteristics that were related to protection against adverse weather conditions (e.g., strong winds) and avian predation, in combination with a suitable nest space, determined the breeding success of Red-legged Cormorants.
Fil: Millones, Ana. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina
Fil: Frere, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina - Materia
-
ARGENTINA
MICROCLIMATE CONDITIONS
NEST SITE FEATURES
NEST SUCCESS
PRODUCTIVITY
RED-LEGGED CORMORANTS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/100448
Ver los metadatos del registro completo
id |
CONICETDig_936ee3b0150164f8e5e23d2bd1f7e0e6 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/100448 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardiMillones, AnaFrere, EstebanARGENTINAMICROCLIMATE CONDITIONSNEST SITE FEATURESNEST SUCCESSPRODUCTIVITYRED-LEGGED CORMORANTShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1For seabirds, nest site features are an important factor that determines reproductive success. During three breeding seasons (2010-2012), we visited two coastal cliff colonies of Red-legged Cormorants halacrocorax gaimardi in the Ría Deseado, Argentina, and studied how nest site characteristics influenced their breeding success. We measured six physical characteristics at 46 nest sites, and we counted the number of fledglings produced each year from each nest (breeding success). We also related nest site temperature and wind exposure with nest site orientation. Breeding success was higher at nest sites with a broad base (greater capacity for holding young) and at nests that were less exposed to winds greater than 25 knots (46.25 km/h), which were sites with a north orientation. The lowest breeding success was observed in nest sites that were exposed to the strongest winds (i.e., sites with a south orientation). Strong winds often blow eggs and chicks away from the nests and increase opportunistic predation by gulls Larus sp. No significant relationship was found between nest site orientation and nest site temperature. Breeding success decreased with the distance to the nearest nest, which agrees with the idea that higher density of reproductive individuals reduces effectiveness of predators. Nest cover, distance from the top of the cliff, and distance from the tide line had no effect on breeding success at this study scale. Our results suggested that nest site haracteristics that were related to protection against adverse weather conditions (e.g., strong winds) and avian predation, in combination with a suitable nest space, determined the breeding success of Red-legged Cormorants.Fil: Millones, Ana. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; ArgentinaFil: Frere, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; ArgentinaPolish Academy of Sciences. Museum and Institute of Zoology2018-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100448Millones, Ana; Frere, Esteban; How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi; Polish Academy of Sciences. Museum and Institute of Zoology; Acta Ornithologica; 52; 2; 1-2018; 239-2440001-6454CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/Acta-Ornithologica/volume-52/issue-2/00016454AO2017.52.2.011/How-Nest-Site-Characteristics-Influence-Breeding-Success-in-Red-legged/10.3161/00016454AO2017.52.2.011.shortinfo:eu-repo/semantics/altIdentifier/doi/10.3161/00016454AO2017.52.2.011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:56Zoai:ri.conicet.gov.ar:11336/100448instacron: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:34982025-09-03 10:04:57.064CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
title |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
spellingShingle |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi Millones, Ana ARGENTINA MICROCLIMATE CONDITIONS NEST SITE FEATURES NEST SUCCESS PRODUCTIVITY RED-LEGGED CORMORANTS |
title_short |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
title_full |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
title_fullStr |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
title_full_unstemmed |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
title_sort |
How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi |
dc.creator.none.fl_str_mv |
Millones, Ana Frere, Esteban |
author |
Millones, Ana |
author_facet |
Millones, Ana Frere, Esteban |
author_role |
author |
author2 |
Frere, Esteban |
author2_role |
author |
dc.subject.none.fl_str_mv |
ARGENTINA MICROCLIMATE CONDITIONS NEST SITE FEATURES NEST SUCCESS PRODUCTIVITY RED-LEGGED CORMORANTS |
topic |
ARGENTINA MICROCLIMATE CONDITIONS NEST SITE FEATURES NEST SUCCESS PRODUCTIVITY RED-LEGGED CORMORANTS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
For seabirds, nest site features are an important factor that determines reproductive success. During three breeding seasons (2010-2012), we visited two coastal cliff colonies of Red-legged Cormorants halacrocorax gaimardi in the Ría Deseado, Argentina, and studied how nest site characteristics influenced their breeding success. We measured six physical characteristics at 46 nest sites, and we counted the number of fledglings produced each year from each nest (breeding success). We also related nest site temperature and wind exposure with nest site orientation. Breeding success was higher at nest sites with a broad base (greater capacity for holding young) and at nests that were less exposed to winds greater than 25 knots (46.25 km/h), which were sites with a north orientation. The lowest breeding success was observed in nest sites that were exposed to the strongest winds (i.e., sites with a south orientation). Strong winds often blow eggs and chicks away from the nests and increase opportunistic predation by gulls Larus sp. No significant relationship was found between nest site orientation and nest site temperature. Breeding success decreased with the distance to the nearest nest, which agrees with the idea that higher density of reproductive individuals reduces effectiveness of predators. Nest cover, distance from the top of the cliff, and distance from the tide line had no effect on breeding success at this study scale. Our results suggested that nest site haracteristics that were related to protection against adverse weather conditions (e.g., strong winds) and avian predation, in combination with a suitable nest space, determined the breeding success of Red-legged Cormorants. Fil: Millones, Ana. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina Fil: Frere, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina |
description |
For seabirds, nest site features are an important factor that determines reproductive success. During three breeding seasons (2010-2012), we visited two coastal cliff colonies of Red-legged Cormorants halacrocorax gaimardi in the Ría Deseado, Argentina, and studied how nest site characteristics influenced their breeding success. We measured six physical characteristics at 46 nest sites, and we counted the number of fledglings produced each year from each nest (breeding success). We also related nest site temperature and wind exposure with nest site orientation. Breeding success was higher at nest sites with a broad base (greater capacity for holding young) and at nests that were less exposed to winds greater than 25 knots (46.25 km/h), which were sites with a north orientation. The lowest breeding success was observed in nest sites that were exposed to the strongest winds (i.e., sites with a south orientation). Strong winds often blow eggs and chicks away from the nests and increase opportunistic predation by gulls Larus sp. No significant relationship was found between nest site orientation and nest site temperature. Breeding success decreased with the distance to the nearest nest, which agrees with the idea that higher density of reproductive individuals reduces effectiveness of predators. Nest cover, distance from the top of the cliff, and distance from the tide line had no effect on breeding success at this study scale. Our results suggested that nest site haracteristics that were related to protection against adverse weather conditions (e.g., strong winds) and avian predation, in combination with a suitable nest space, determined the breeding success of Red-legged Cormorants. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01 |
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/11336/100448 Millones, Ana; Frere, Esteban; How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi; Polish Academy of Sciences. Museum and Institute of Zoology; Acta Ornithologica; 52; 2; 1-2018; 239-244 0001-6454 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/100448 |
identifier_str_mv |
Millones, Ana; Frere, Esteban; How Nest Site Characteristics Influence Breeding Success in Red-legged Cormorants Phalacrocorax gaimardi; Polish Academy of Sciences. Museum and Institute of Zoology; Acta Ornithologica; 52; 2; 1-2018; 239-244 0001-6454 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://bioone.org/journals/Acta-Ornithologica/volume-52/issue-2/00016454AO2017.52.2.011/How-Nest-Site-Characteristics-Influence-Breeding-Success-in-Red-legged/10.3161/00016454AO2017.52.2.011.short info:eu-repo/semantics/altIdentifier/doi/10.3161/00016454AO2017.52.2.011 |
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 |
dc.publisher.none.fl_str_mv |
Polish Academy of Sciences. Museum and Institute of Zoology |
publisher.none.fl_str_mv |
Polish Academy of Sciences. Museum and Institute of Zoology |
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 |
_version_ |
1842269882483212288 |
score |
13.13397 |