Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés

Autores
Sueyro, Nicolás; Crespo, Enrique Alberto; Arias, Magdalena; Coscarella, Mariano Alberto
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Right Whale (Eubalaena australis) population of the South–western Atlantic Ocean is recovering. In the breeding ground of Peninsula Valdés, because of the population growth, expansion to new areas by some types of groups and a change in the habitat use patterns at the coastal area were recorded. We analysed information gathered from aerial surveys conducted along the coast of Peninsula Valdés in 15 years of effective sampling in a 19-year span. These surveys were divided into four periods (1999–2000; 2004–2007; 2008–2012 and 2013–2016) and estimated the density of whales in a 620 km of coast divided into segments of five km. Information on the group composition was recorded, including Mother-calf pairs, Solitary Individuals or Breeding groups. For the analysis in this work Solitary Individuals and Breeding groups were pooled in Other groups, as a group category opposite to the Mother-calf pairs. Preliminary examination of data led us to define two high densities zones, one inside Golfo Nuevo and other inside Golfo San José, defining the low-density zones as those outside the high-density zones. The density of the whales increased to near three whales per km2 (averaged over each period) in the high-density areas. When this mean density was reached, significant changes in density in the adjacent areas were detected in the following period. These changes were a decrease in density in the high-density areas and an increase of density in the low-density areas. We propose that a threshold in density elicits a response in habitat use, with the Mother-calf pairs remaining in the area, while the other groups are displaced to new areas.
Fil: Sueyro, Nicolás. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Crespo, Enrique Alberto. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Arias, Magdalena. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Coscarella, Mariano Alberto. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Intersessional Workshop on the IWC Conservation Management Plan for the Southwest Atlantic Southern Right Whale Population (SWA-RW)
Cambridge
Reino Unido
International Whaling Commission
Materia
EUBALAENA AUSTRALIS
SOUTHERN RIGHT WHALES
DENSITY-DEPENDENT
CHANGES IN THE DISTRIBUTION
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:11336/181521
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula ValdésSueyro, NicolásCrespo, Enrique AlbertoArias, MagdalenaCoscarella, Mariano AlbertoEUBALAENA AUSTRALISSOUTHERN RIGHT WHALESDENSITY-DEPENDENTCHANGES IN THE DISTRIBUTIONhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1Right Whale (Eubalaena australis) population of the South–western Atlantic Ocean is recovering. In the breeding ground of Peninsula Valdés, because of the population growth, expansion to new areas by some types of groups and a change in the habitat use patterns at the coastal area were recorded. We analysed information gathered from aerial surveys conducted along the coast of Peninsula Valdés in 15 years of effective sampling in a 19-year span. These surveys were divided into four periods (1999–2000; 2004–2007; 2008–2012 and 2013–2016) and estimated the density of whales in a 620 km of coast divided into segments of five km. Information on the group composition was recorded, including Mother-calf pairs, Solitary Individuals or Breeding groups. For the analysis in this work Solitary Individuals and Breeding groups were pooled in Other groups, as a group category opposite to the Mother-calf pairs. Preliminary examination of data led us to define two high densities zones, one inside Golfo Nuevo and other inside Golfo San José, defining the low-density zones as those outside the high-density zones. The density of the whales increased to near three whales per km2 (averaged over each period) in the high-density areas. When this mean density was reached, significant changes in density in the adjacent areas were detected in the following period. These changes were a decrease in density in the high-density areas and an increase of density in the low-density areas. We propose that a threshold in density elicits a response in habitat use, with the Mother-calf pairs remaining in the area, while the other groups are displaced to new areas.Fil: Sueyro, Nicolás. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Crespo, Enrique Alberto. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Arias, Magdalena. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; ArgentinaFil: Coscarella, Mariano Alberto. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaIntersessional Workshop on the IWC Conservation Management Plan for the Southwest Atlantic Southern Right Whale Population (SWA-RW)CambridgeReino UnidoInternational Whaling CommissionInternational Whaling Commission2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectWorkshopJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/181521Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés; Intersessional Workshop on the IWC Conservation Management Plan for the Southwest Atlantic Southern Right Whale Population (SWA-RW); Cambridge; Reino Unido; 2021; 10-10CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://archive.iwc.int/pages/view.php?search=&k=7406fd9425&modal=&display=list&order_by=field74&offset=0&per_page=240&archive=0&sort=DESC&restypes=&recentdaylimit=&foredit=&ref=19188Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:50Zoai:ri.conicet.gov.ar:11336/181521instacron: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 09:48:50.411CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
title Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
spellingShingle Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
Sueyro, Nicolás
EUBALAENA AUSTRALIS
SOUTHERN RIGHT WHALES
DENSITY-DEPENDENT
CHANGES IN THE DISTRIBUTION
title_short Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
title_full Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
title_fullStr Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
title_full_unstemmed Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
title_sort Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés
dc.creator.none.fl_str_mv Sueyro, Nicolás
Crespo, Enrique Alberto
Arias, Magdalena
Coscarella, Mariano Alberto
author Sueyro, Nicolás
author_facet Sueyro, Nicolás
Crespo, Enrique Alberto
Arias, Magdalena
Coscarella, Mariano Alberto
author_role author
author2 Crespo, Enrique Alberto
Arias, Magdalena
Coscarella, Mariano Alberto
author2_role author
author
author
dc.subject.none.fl_str_mv EUBALAENA AUSTRALIS
SOUTHERN RIGHT WHALES
DENSITY-DEPENDENT
CHANGES IN THE DISTRIBUTION
topic EUBALAENA AUSTRALIS
SOUTHERN RIGHT WHALES
DENSITY-DEPENDENT
CHANGES IN THE DISTRIBUTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Right Whale (Eubalaena australis) population of the South–western Atlantic Ocean is recovering. In the breeding ground of Peninsula Valdés, because of the population growth, expansion to new areas by some types of groups and a change in the habitat use patterns at the coastal area were recorded. We analysed information gathered from aerial surveys conducted along the coast of Peninsula Valdés in 15 years of effective sampling in a 19-year span. These surveys were divided into four periods (1999–2000; 2004–2007; 2008–2012 and 2013–2016) and estimated the density of whales in a 620 km of coast divided into segments of five km. Information on the group composition was recorded, including Mother-calf pairs, Solitary Individuals or Breeding groups. For the analysis in this work Solitary Individuals and Breeding groups were pooled in Other groups, as a group category opposite to the Mother-calf pairs. Preliminary examination of data led us to define two high densities zones, one inside Golfo Nuevo and other inside Golfo San José, defining the low-density zones as those outside the high-density zones. The density of the whales increased to near three whales per km2 (averaged over each period) in the high-density areas. When this mean density was reached, significant changes in density in the adjacent areas were detected in the following period. These changes were a decrease in density in the high-density areas and an increase of density in the low-density areas. We propose that a threshold in density elicits a response in habitat use, with the Mother-calf pairs remaining in the area, while the other groups are displaced to new areas.
Fil: Sueyro, Nicolás. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Crespo, Enrique Alberto. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Arias, Magdalena. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Coscarella, Mariano Alberto. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Intersessional Workshop on the IWC Conservation Management Plan for the Southwest Atlantic Southern Right Whale Population (SWA-RW)
Cambridge
Reino Unido
International Whaling Commission
description Right Whale (Eubalaena australis) population of the South–western Atlantic Ocean is recovering. In the breeding ground of Peninsula Valdés, because of the population growth, expansion to new areas by some types of groups and a change in the habitat use patterns at the coastal area were recorded. We analysed information gathered from aerial surveys conducted along the coast of Peninsula Valdés in 15 years of effective sampling in a 19-year span. These surveys were divided into four periods (1999–2000; 2004–2007; 2008–2012 and 2013–2016) and estimated the density of whales in a 620 km of coast divided into segments of five km. Information on the group composition was recorded, including Mother-calf pairs, Solitary Individuals or Breeding groups. For the analysis in this work Solitary Individuals and Breeding groups were pooled in Other groups, as a group category opposite to the Mother-calf pairs. Preliminary examination of data led us to define two high densities zones, one inside Golfo Nuevo and other inside Golfo San José, defining the low-density zones as those outside the high-density zones. The density of the whales increased to near three whales per km2 (averaged over each period) in the high-density areas. When this mean density was reached, significant changes in density in the adjacent areas were detected in the following period. These changes were a decrease in density in the high-density areas and an increase of density in the low-density areas. We propose that a threshold in density elicits a response in habitat use, with the Mother-calf pairs remaining in the area, while the other groups are displaced to new areas.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Workshop
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/181521
Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés; Intersessional Workshop on the IWC Conservation Management Plan for the Southwest Atlantic Southern Right Whale Population (SWA-RW); Cambridge; Reino Unido; 2021; 10-10
CONICET Digital
CONICET
url http://hdl.handle.net/11336/181521
identifier_str_mv Density-dependent changes in the distribution of Southern Right Whales (Eubalaena australis) in the breeding ground Peninsula Valdés; Intersessional Workshop on the IWC Conservation Management Plan for the Southwest Atlantic Southern Right Whale Population (SWA-RW); Cambridge; Reino Unido; 2021; 10-10
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Whaling Commission
publisher.none.fl_str_mv International Whaling Commission
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repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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