Abundance of small cetaceans in waters of the central Spanish Mediterranean

Autores
Gómez de Segura, Amaia; Crespo, Enrique Alberto; Pedraza, Susana Noemi; Hammond, P. S.; Raga, J. A.
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Seasonal aerial surveys were conducted in the waters of the central Spanish Mediterranean from 2001 to 2003 using line transect sampling methodology to estimate cetacean abundance. The density of the three most abundant species, striped dolphin (Stenella coeruleoalba), bottlenose dolphin (Tursiops truncatus) and Risso’s dolphins (Grampus griseus) was estimated. In the case of the first two species, density was estimated accounting for the proportion of submerged animals, while for Risso’s dolphin only the surface density could be estimated. The striped dolphin was the most abundant species in the study area with a mean density of 0.489 dolphins km-2 (95% CI = 0.339 - 0.705) and a mean abundance of 15,778 dolphins (95% CI = 10,940 - 22,756). This density is comparable to that obtained in the International Ligurian Sea Cetacean Sanctuary. Striped dolphins were observed throughout the whole year and no seasonal changes in density were detected. The mean density of bottlenose dolphins was an order of magnitude lower than that of striped dolphin (0.041 dolphins km-2; 95% CI = 0.023 - 0.075) with a mean abundance of 1,333 dolphins (95% CI = 739 - 2,407). The Risso’s dolphin had a surface estimated density of 0.015 dolphins km-2 (95% CI = 0.005 - 0.046) and a mean abundance of 493 dolphins (95% CI = 162 - 1,498). These results provide valuable biological information useful to develop conservation plans and establish a baseline for future population trends studies.
Fil: Gómez de Segura, Amaia. Universidad de Valencia; España
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Pedraza, Susana Noemi. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Hammond, P. S.. University of St. Andrews; Reino Unido
Fil: Raga, J. A.. Universidad de Valencia; España
Materia
BOTTLENOSE DOLPHIN
DETECTION FUNCTION
AERIAL SURVEY
SCHOOL SIZE
SMALL SCHOOL
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:11336/103883
Acceder
id CONICETDig_4bbae376d5b1230b33273e0454955632
oai_identifier_str oai:ri.conicet.gov.ar:11336/103883
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Abundance of small cetaceans in waters of the central Spanish MediterraneanGómez de Segura, AmaiaCrespo, Enrique AlbertoPedraza, Susana NoemiHammond, P. S.Raga, J. A.BOTTLENOSE DOLPHINDETECTION FUNCTIONAERIAL SURVEYSCHOOL SIZESMALL SCHOOLhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Seasonal aerial surveys were conducted in the waters of the central Spanish Mediterranean from 2001 to 2003 using line transect sampling methodology to estimate cetacean abundance. The density of the three most abundant species, striped dolphin (Stenella coeruleoalba), bottlenose dolphin (Tursiops truncatus) and Risso’s dolphins (Grampus griseus) was estimated. In the case of the first two species, density was estimated accounting for the proportion of submerged animals, while for Risso’s dolphin only the surface density could be estimated. The striped dolphin was the most abundant species in the study area with a mean density of 0.489 dolphins km-2 (95% CI = 0.339 - 0.705) and a mean abundance of 15,778 dolphins (95% CI = 10,940 - 22,756). This density is comparable to that obtained in the International Ligurian Sea Cetacean Sanctuary. Striped dolphins were observed throughout the whole year and no seasonal changes in density were detected. The mean density of bottlenose dolphins was an order of magnitude lower than that of striped dolphin (0.041 dolphins km-2; 95% CI = 0.023 - 0.075) with a mean abundance of 1,333 dolphins (95% CI = 739 - 2,407). The Risso’s dolphin had a surface estimated density of 0.015 dolphins km-2 (95% CI = 0.005 - 0.046) and a mean abundance of 493 dolphins (95% CI = 162 - 1,498). These results provide valuable biological information useful to develop conservation plans and establish a baseline for future population trends studies.Fil: Gómez de Segura, Amaia. Universidad de Valencia; EspañaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Pedraza, Susana Noemi. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Hammond, P. S.. University of St. Andrews; Reino UnidoFil: Raga, J. A.. Universidad de Valencia; EspañaSpringer2006-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/103883Gómez de Segura, Amaia; Crespo, Enrique Alberto; Pedraza, Susana Noemi; Hammond, P. S.; Raga, J. A.; Abundance of small cetaceans in waters of the central Spanish Mediterranean; Springer; Marine Biology; 150; 1; 5-2006; 149-1600025-31621432-1793CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00227-006-0334-0info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-006-0334-0info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:38:31Zoai:ri.conicet.gov.ar:11336/103883instacron: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 10:38:31.51CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Abundance of small cetaceans in waters of the central Spanish Mediterranean
title Abundance of small cetaceans in waters of the central Spanish Mediterranean
spellingShingle Abundance of small cetaceans in waters of the central Spanish Mediterranean
Gómez de Segura, Amaia
BOTTLENOSE DOLPHIN
DETECTION FUNCTION
AERIAL SURVEY
SCHOOL SIZE
SMALL SCHOOL
title_short Abundance of small cetaceans in waters of the central Spanish Mediterranean
title_full Abundance of small cetaceans in waters of the central Spanish Mediterranean
title_fullStr Abundance of small cetaceans in waters of the central Spanish Mediterranean
title_full_unstemmed Abundance of small cetaceans in waters of the central Spanish Mediterranean
title_sort Abundance of small cetaceans in waters of the central Spanish Mediterranean
dc.creator.none.fl_str_mv Gómez de Segura, Amaia
Crespo, Enrique Alberto
Pedraza, Susana Noemi
Hammond, P. S.
Raga, J. A.
author Gómez de Segura, Amaia
author_facet Gómez de Segura, Amaia
Crespo, Enrique Alberto
Pedraza, Susana Noemi
Hammond, P. S.
Raga, J. A.
author_role author
author2 Crespo, Enrique Alberto
Pedraza, Susana Noemi
Hammond, P. S.
Raga, J. A.
author2_role author
author
author
author
dc.subject.none.fl_str_mv BOTTLENOSE DOLPHIN
DETECTION FUNCTION
AERIAL SURVEY
SCHOOL SIZE
SMALL SCHOOL
topic BOTTLENOSE DOLPHIN
DETECTION FUNCTION
AERIAL SURVEY
SCHOOL SIZE
SMALL SCHOOL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Seasonal aerial surveys were conducted in the waters of the central Spanish Mediterranean from 2001 to 2003 using line transect sampling methodology to estimate cetacean abundance. The density of the three most abundant species, striped dolphin (Stenella coeruleoalba), bottlenose dolphin (Tursiops truncatus) and Risso’s dolphins (Grampus griseus) was estimated. In the case of the first two species, density was estimated accounting for the proportion of submerged animals, while for Risso’s dolphin only the surface density could be estimated. The striped dolphin was the most abundant species in the study area with a mean density of 0.489 dolphins km-2 (95% CI = 0.339 - 0.705) and a mean abundance of 15,778 dolphins (95% CI = 10,940 - 22,756). This density is comparable to that obtained in the International Ligurian Sea Cetacean Sanctuary. Striped dolphins were observed throughout the whole year and no seasonal changes in density were detected. The mean density of bottlenose dolphins was an order of magnitude lower than that of striped dolphin (0.041 dolphins km-2; 95% CI = 0.023 - 0.075) with a mean abundance of 1,333 dolphins (95% CI = 739 - 2,407). The Risso’s dolphin had a surface estimated density of 0.015 dolphins km-2 (95% CI = 0.005 - 0.046) and a mean abundance of 493 dolphins (95% CI = 162 - 1,498). These results provide valuable biological information useful to develop conservation plans and establish a baseline for future population trends studies.
Fil: Gómez de Segura, Amaia. Universidad de Valencia; España
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Pedraza, Susana Noemi. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Hammond, P. S.. University of St. Andrews; Reino Unido
Fil: Raga, J. A.. Universidad de Valencia; España
description Seasonal aerial surveys were conducted in the waters of the central Spanish Mediterranean from 2001 to 2003 using line transect sampling methodology to estimate cetacean abundance. The density of the three most abundant species, striped dolphin (Stenella coeruleoalba), bottlenose dolphin (Tursiops truncatus) and Risso’s dolphins (Grampus griseus) was estimated. In the case of the first two species, density was estimated accounting for the proportion of submerged animals, while for Risso’s dolphin only the surface density could be estimated. The striped dolphin was the most abundant species in the study area with a mean density of 0.489 dolphins km-2 (95% CI = 0.339 - 0.705) and a mean abundance of 15,778 dolphins (95% CI = 10,940 - 22,756). This density is comparable to that obtained in the International Ligurian Sea Cetacean Sanctuary. Striped dolphins were observed throughout the whole year and no seasonal changes in density were detected. The mean density of bottlenose dolphins was an order of magnitude lower than that of striped dolphin (0.041 dolphins km-2; 95% CI = 0.023 - 0.075) with a mean abundance of 1,333 dolphins (95% CI = 739 - 2,407). The Risso’s dolphin had a surface estimated density of 0.015 dolphins km-2 (95% CI = 0.005 - 0.046) and a mean abundance of 493 dolphins (95% CI = 162 - 1,498). These results provide valuable biological information useful to develop conservation plans and establish a baseline for future population trends studies.
publishDate 2006
dc.date.none.fl_str_mv 2006-05
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/11336/103883
Gómez de Segura, Amaia; Crespo, Enrique Alberto; Pedraza, Susana Noemi; Hammond, P. S.; Raga, J. A.; Abundance of small cetaceans in waters of the central Spanish Mediterranean; Springer; Marine Biology; 150; 1; 5-2006; 149-160
0025-3162
1432-1793
CONICET Digital
CONICET
url http://hdl.handle.net/11336/103883
identifier_str_mv Gómez de Segura, Amaia; Crespo, Enrique Alberto; Pedraza, Susana Noemi; Hammond, P. S.; Raga, J. A.; Abundance of small cetaceans in waters of the central Spanish Mediterranean; Springer; Marine Biology; 150; 1; 5-2006; 149-160
0025-3162
1432-1793
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://link.springer.com/article/10.1007%2Fs00227-006-0334-0
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-006-0334-0
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 Springer
publisher.none.fl_str_mv Springer
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_ 1844614408104312832
score 13.070432

Publicaciones similares