Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina

Autores
Svendsen, Guillermo; Romero, Maria Alejandra; Williams, Gabriela Noemí; Gagliardini, Domingo Antonio; Crespo, Enrique Alberto; Dans, Silvana Laura; González, Raul Alberto Candido
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Research on the ecology of sympatric dolphins has increased worldwide in recent decades. However, many dolphin associations such as that between common dolphins (Delphinus delphis) and dusky dolphins (Lagenorhynchus obscurus) are poorly understood. The present study was conducted in the San Matías Gulf (SMG) ecosystem (North Patagonia, Argentina) where a high diet overlap among both species was found. The main objective of the present work was to explore the niche overlap of common and dusky dolphins in the habitat and temporal dimensions. The specific aims were (a) to evaluate the habitat use strategies of both species through a comparison of their group attributes (social composition, size and activity), and (b) to evaluate their habitat preferences and habitat overlap through Environmental Niche modeling considering two oceanographic seasons. To accomplish these aims, we used a historic database of opportunistic and systematic records collected from 1983 to 2011. Common and dusky dolphins exhibited similar patterns of group size (from less than 10 to more than 100 individuals), activity (both species use the area to feed, nurse, and copulate), and composition (adults, juveniles, and mothers with calves were observed for both species). Also, both species were observed travelling and feeding in mixed-species groups. Specific overlap indices were higher for common dolphins than for dusky dolphins, but all indices were low, suggesting that they are mainly segregated in the habitat dimension. In the case of common dolphins, the best habitats were located in the northwest of the gulf far from the coast. In the warm season they prefer areas with temperate sea surface and in the cold season they prefer areas with relatively high variability of sea surface temperature. Meanwhile, dusky dolphins prefer areas with steep slopes close to the coast in the southwestern sector of the gulf in both seasons.
Fil: Svendsen, Guillermo. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Romero, Maria Alejandra. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Williams, Gabriela Noemí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Gagliardini, Domingo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: González, Raul Alberto Candido. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina
Materia
DELPHINUS DELPHIS
ENVIRONMENTAL NICHE MODELS
LAGENORHYNCHUS OBSCURUS
MAXENT MIXED-SPECIES GROUPS
NICHE OVERLAP
PATAGONIAN SHELF ECOSYSTEM
SYMPATRIC DOLPHINS
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:11336/117611
Acceder
id CONICETDig_6ef2d4269fbdc3592a93830a429f4ee5
oai_identifier_str oai:ri.conicet.gov.ar:11336/117611
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Environmental niche overlap between common and dusky dolphins in North Patagonia, ArgentinaSvendsen, GuillermoRomero, Maria AlejandraWilliams, Gabriela NoemíGagliardini, Domingo AntonioCrespo, Enrique AlbertoDans, Silvana LauraGonzález, Raul Alberto CandidoDELPHINUS DELPHISENVIRONMENTAL NICHE MODELSLAGENORHYNCHUS OBSCURUSMAXENT MIXED-SPECIES GROUPSNICHE OVERLAPPATAGONIAN SHELF ECOSYSTEMSYMPATRIC DOLPHINShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Research on the ecology of sympatric dolphins has increased worldwide in recent decades. However, many dolphin associations such as that between common dolphins (Delphinus delphis) and dusky dolphins (Lagenorhynchus obscurus) are poorly understood. The present study was conducted in the San Matías Gulf (SMG) ecosystem (North Patagonia, Argentina) where a high diet overlap among both species was found. The main objective of the present work was to explore the niche overlap of common and dusky dolphins in the habitat and temporal dimensions. The specific aims were (a) to evaluate the habitat use strategies of both species through a comparison of their group attributes (social composition, size and activity), and (b) to evaluate their habitat preferences and habitat overlap through Environmental Niche modeling considering two oceanographic seasons. To accomplish these aims, we used a historic database of opportunistic and systematic records collected from 1983 to 2011. Common and dusky dolphins exhibited similar patterns of group size (from less than 10 to more than 100 individuals), activity (both species use the area to feed, nurse, and copulate), and composition (adults, juveniles, and mothers with calves were observed for both species). Also, both species were observed travelling and feeding in mixed-species groups. Specific overlap indices were higher for common dolphins than for dusky dolphins, but all indices were low, suggesting that they are mainly segregated in the habitat dimension. In the case of common dolphins, the best habitats were located in the northwest of the gulf far from the coast. In the warm season they prefer areas with temperate sea surface and in the cold season they prefer areas with relatively high variability of sea surface temperature. Meanwhile, dusky dolphins prefer areas with steep slopes close to the coast in the southwestern sector of the gulf in both seasons.Fil: Svendsen, Guillermo. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Romero, Maria Alejandra. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Williams, Gabriela Noemí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Gagliardini, Domingo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: González, Raul Alberto Candido. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; ArgentinaPublic Library of Science2015-06info: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/11336/117611Svendsen, Guillermo; Romero, Maria Alejandra; Williams, Gabriela Noemí; Gagliardini, Domingo Antonio; Crespo, Enrique Alberto; et al.; Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina; Public Library of Science; Plos One; 10; 6; 6-2015; 1-201932-6203CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0126182info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0126182info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:56Zoai:ri.conicet.gov.ar:11336/117611instacron: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 09:33:57.031CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
title Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
spellingShingle Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
Svendsen, Guillermo
DELPHINUS DELPHIS
ENVIRONMENTAL NICHE MODELS
LAGENORHYNCHUS OBSCURUS
MAXENT MIXED-SPECIES GROUPS
NICHE OVERLAP
PATAGONIAN SHELF ECOSYSTEM
SYMPATRIC DOLPHINS
title_short Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
title_full Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
title_fullStr Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
title_full_unstemmed Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
title_sort Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina
dc.creator.none.fl_str_mv Svendsen, Guillermo
Romero, Maria Alejandra
Williams, Gabriela Noemí
Gagliardini, Domingo Antonio
Crespo, Enrique Alberto
Dans, Silvana Laura
González, Raul Alberto Candido
author Svendsen, Guillermo
author_facet Svendsen, Guillermo
Romero, Maria Alejandra
Williams, Gabriela Noemí
Gagliardini, Domingo Antonio
Crespo, Enrique Alberto
Dans, Silvana Laura
González, Raul Alberto Candido
author_role author
author2 Romero, Maria Alejandra
Williams, Gabriela Noemí
Gagliardini, Domingo Antonio
Crespo, Enrique Alberto
Dans, Silvana Laura
González, Raul Alberto Candido
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv DELPHINUS DELPHIS
ENVIRONMENTAL NICHE MODELS
LAGENORHYNCHUS OBSCURUS
MAXENT MIXED-SPECIES GROUPS
NICHE OVERLAP
PATAGONIAN SHELF ECOSYSTEM
SYMPATRIC DOLPHINS
topic DELPHINUS DELPHIS
ENVIRONMENTAL NICHE MODELS
LAGENORHYNCHUS OBSCURUS
MAXENT MIXED-SPECIES GROUPS
NICHE OVERLAP
PATAGONIAN SHELF ECOSYSTEM
SYMPATRIC DOLPHINS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Research on the ecology of sympatric dolphins has increased worldwide in recent decades. However, many dolphin associations such as that between common dolphins (Delphinus delphis) and dusky dolphins (Lagenorhynchus obscurus) are poorly understood. The present study was conducted in the San Matías Gulf (SMG) ecosystem (North Patagonia, Argentina) where a high diet overlap among both species was found. The main objective of the present work was to explore the niche overlap of common and dusky dolphins in the habitat and temporal dimensions. The specific aims were (a) to evaluate the habitat use strategies of both species through a comparison of their group attributes (social composition, size and activity), and (b) to evaluate their habitat preferences and habitat overlap through Environmental Niche modeling considering two oceanographic seasons. To accomplish these aims, we used a historic database of opportunistic and systematic records collected from 1983 to 2011. Common and dusky dolphins exhibited similar patterns of group size (from less than 10 to more than 100 individuals), activity (both species use the area to feed, nurse, and copulate), and composition (adults, juveniles, and mothers with calves were observed for both species). Also, both species were observed travelling and feeding in mixed-species groups. Specific overlap indices were higher for common dolphins than for dusky dolphins, but all indices were low, suggesting that they are mainly segregated in the habitat dimension. In the case of common dolphins, the best habitats were located in the northwest of the gulf far from the coast. In the warm season they prefer areas with temperate sea surface and in the cold season they prefer areas with relatively high variability of sea surface temperature. Meanwhile, dusky dolphins prefer areas with steep slopes close to the coast in the southwestern sector of the gulf in both seasons.
Fil: Svendsen, Guillermo. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Romero, Maria Alejandra. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Williams, Gabriela Noemí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Gagliardini, Domingo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: González, Raul Alberto Candido. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina
description Research on the ecology of sympatric dolphins has increased worldwide in recent decades. However, many dolphin associations such as that between common dolphins (Delphinus delphis) and dusky dolphins (Lagenorhynchus obscurus) are poorly understood. The present study was conducted in the San Matías Gulf (SMG) ecosystem (North Patagonia, Argentina) where a high diet overlap among both species was found. The main objective of the present work was to explore the niche overlap of common and dusky dolphins in the habitat and temporal dimensions. The specific aims were (a) to evaluate the habitat use strategies of both species through a comparison of their group attributes (social composition, size and activity), and (b) to evaluate their habitat preferences and habitat overlap through Environmental Niche modeling considering two oceanographic seasons. To accomplish these aims, we used a historic database of opportunistic and systematic records collected from 1983 to 2011. Common and dusky dolphins exhibited similar patterns of group size (from less than 10 to more than 100 individuals), activity (both species use the area to feed, nurse, and copulate), and composition (adults, juveniles, and mothers with calves were observed for both species). Also, both species were observed travelling and feeding in mixed-species groups. Specific overlap indices were higher for common dolphins than for dusky dolphins, but all indices were low, suggesting that they are mainly segregated in the habitat dimension. In the case of common dolphins, the best habitats were located in the northwest of the gulf far from the coast. In the warm season they prefer areas with temperate sea surface and in the cold season they prefer areas with relatively high variability of sea surface temperature. Meanwhile, dusky dolphins prefer areas with steep slopes close to the coast in the southwestern sector of the gulf in both seasons.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
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/11336/117611
Svendsen, Guillermo; Romero, Maria Alejandra; Williams, Gabriela Noemí; Gagliardini, Domingo Antonio; Crespo, Enrique Alberto; et al.; Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina; Public Library of Science; Plos One; 10; 6; 6-2015; 1-20
1932-6203
CONICET Digital
CONICET
url http://hdl.handle.net/11336/117611
identifier_str_mv Svendsen, Guillermo; Romero, Maria Alejandra; Williams, Gabriela Noemí; Gagliardini, Domingo Antonio; Crespo, Enrique Alberto; et al.; Environmental niche overlap between common and dusky dolphins in North Patagonia, Argentina; Public Library of Science; Plos One; 10; 6; 6-2015; 1-20
1932-6203
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0126182
info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0126182
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 Public Library of Science
publisher.none.fl_str_mv Public Library of Science
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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