Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline?
- Autores
- Coscarella, Mariano Alberto; Dans, Silvana Laura; Degrati, Mariana; Garaffo, Griselda Valeria; Crespo, Enrique Alberto
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The management scheme of Marine Protected Areas (MPAs) includes monitoring protocols but such activities are not always carried out. This is the case for Golfo San Jose ´, a MPA in northern Patagonia, Argentina. It was created in 1975 for the protection of the southern right whale (Eubalaena australis) breeding grounds. Other components of the system, such as dolphin populations have received little attention. This study is the first attempt to estimate sighting rates, group size and overall abundance of a bottlenose dolphin (Tursiops truncatus) population in Golfo San Jose and adjacent areas after 30 years. An analysis of the seasonal sighting rates indicates that bottlenose dolphins were present in the study area throughout the year but a decline in group size and abundance and major shift in distribution was detected when compared with previous published reports. The settlement of the MPA failed to secure the persistence of the bottlenose dolphin population within its boundaries. Possible explanations for the detected decline are addressed including increased natural mortality, human induced mortality and disturbance, resources depletion and environmental shift.
Fil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Degrati, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Garaffo, Griselda Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina - Materia
-
BOTTLENOSE DOLPHINS
LOCAL POPULATION DECLINE
MARINE PROTECTED AREAS
TURSIOPS TRUNCATUS - 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:11336/268927
Ver los metadatos del registro completo
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Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline?Coscarella, Mariano AlbertoDans, Silvana LauraDegrati, MarianaGaraffo, Griselda ValeriaCrespo, Enrique AlbertoBOTTLENOSE DOLPHINSLOCAL POPULATION DECLINEMARINE PROTECTED AREASTURSIOPS TRUNCATUShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The management scheme of Marine Protected Areas (MPAs) includes monitoring protocols but such activities are not always carried out. This is the case for Golfo San Jose ´, a MPA in northern Patagonia, Argentina. It was created in 1975 for the protection of the southern right whale (Eubalaena australis) breeding grounds. Other components of the system, such as dolphin populations have received little attention. This study is the first attempt to estimate sighting rates, group size and overall abundance of a bottlenose dolphin (Tursiops truncatus) population in Golfo San Jose and adjacent areas after 30 years. An analysis of the seasonal sighting rates indicates that bottlenose dolphins were present in the study area throughout the year but a decline in group size and abundance and major shift in distribution was detected when compared with previous published reports. The settlement of the MPA failed to secure the persistence of the bottlenose dolphin population within its boundaries. Possible explanations for the detected decline are addressed including increased natural mortality, human induced mortality and disturbance, resources depletion and environmental shift.Fil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Degrati, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Garaffo, Griselda Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaCambridge University Press2011-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268927Coscarella, Mariano Alberto; Dans, Silvana Laura; Degrati, Mariana; Garaffo, Griselda Valeria; Crespo, Enrique Alberto; Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline?; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 92; 8; 12-2011; 1843-18490025-3154CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315411001901info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:46Zoai:ri.conicet.gov.ar:11336/268927instacron: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:34982025-09-29 10:02:47.053CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
title |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
spellingShingle |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? Coscarella, Mariano Alberto BOTTLENOSE DOLPHINS LOCAL POPULATION DECLINE MARINE PROTECTED AREAS TURSIOPS TRUNCATUS |
title_short |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
title_full |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
title_fullStr |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
title_full_unstemmed |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
title_sort |
Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline? |
dc.creator.none.fl_str_mv |
Coscarella, Mariano Alberto Dans, Silvana Laura Degrati, Mariana Garaffo, Griselda Valeria Crespo, Enrique Alberto |
author |
Coscarella, Mariano Alberto |
author_facet |
Coscarella, Mariano Alberto Dans, Silvana Laura Degrati, Mariana Garaffo, Griselda Valeria Crespo, Enrique Alberto |
author_role |
author |
author2 |
Dans, Silvana Laura Degrati, Mariana Garaffo, Griselda Valeria Crespo, Enrique Alberto |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
BOTTLENOSE DOLPHINS LOCAL POPULATION DECLINE MARINE PROTECTED AREAS TURSIOPS TRUNCATUS |
topic |
BOTTLENOSE DOLPHINS LOCAL POPULATION DECLINE MARINE PROTECTED AREAS TURSIOPS TRUNCATUS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The management scheme of Marine Protected Areas (MPAs) includes monitoring protocols but such activities are not always carried out. This is the case for Golfo San Jose ´, a MPA in northern Patagonia, Argentina. It was created in 1975 for the protection of the southern right whale (Eubalaena australis) breeding grounds. Other components of the system, such as dolphin populations have received little attention. This study is the first attempt to estimate sighting rates, group size and overall abundance of a bottlenose dolphin (Tursiops truncatus) population in Golfo San Jose and adjacent areas after 30 years. An analysis of the seasonal sighting rates indicates that bottlenose dolphins were present in the study area throughout the year but a decline in group size and abundance and major shift in distribution was detected when compared with previous published reports. The settlement of the MPA failed to secure the persistence of the bottlenose dolphin population within its boundaries. Possible explanations for the detected decline are addressed including increased natural mortality, human induced mortality and disturbance, resources depletion and environmental shift. Fil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Degrati, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Garaffo, Griselda Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina |
description |
The management scheme of Marine Protected Areas (MPAs) includes monitoring protocols but such activities are not always carried out. This is the case for Golfo San Jose ´, a MPA in northern Patagonia, Argentina. It was created in 1975 for the protection of the southern right whale (Eubalaena australis) breeding grounds. Other components of the system, such as dolphin populations have received little attention. This study is the first attempt to estimate sighting rates, group size and overall abundance of a bottlenose dolphin (Tursiops truncatus) population in Golfo San Jose and adjacent areas after 30 years. An analysis of the seasonal sighting rates indicates that bottlenose dolphins were present in the study area throughout the year but a decline in group size and abundance and major shift in distribution was detected when compared with previous published reports. The settlement of the MPA failed to secure the persistence of the bottlenose dolphin population within its boundaries. Possible explanations for the detected decline are addressed including increased natural mortality, human induced mortality and disturbance, resources depletion and environmental shift. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-12 |
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/11336/268927 Coscarella, Mariano Alberto; Dans, Silvana Laura; Degrati, Mariana; Garaffo, Griselda Valeria; Crespo, Enrique Alberto; Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline?; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 92; 8; 12-2011; 1843-1849 0025-3154 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/268927 |
identifier_str_mv |
Coscarella, Mariano Alberto; Dans, Silvana Laura; Degrati, Mariana; Garaffo, Griselda Valeria; Crespo, Enrique Alberto; Bottlenose dolphins at the southern extreme of the south-western Atlantic: local population decline?; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 92; 8; 12-2011; 1843-1849 0025-3154 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315411001901 |
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 application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Cambridge University Press |
publisher.none.fl_str_mv |
Cambridge University Press |
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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1844613835356372992 |
score |
13.070432 |