Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.

Pinela, Ana M.; Borrell Thió, Assumpció; Cardona Pascual, Luis; Aguilar, Àlex

Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.

Stable isotope abundances of carbon (δ13C) and nitrogen (δ15N) in the bone of 13 species of marine mammals from the northwest coast of Africa were investigated to assess their positions in the local trophic web and their preferred habitats. Also, samples of primary producers and potential prey speci...

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Detalles Bibliográficos
Autores:	Pinela, Ana M., Borrell Thió, Assumpció, Cardona Pascual, Luis, Aguilar, Àlex
Tipo de recurso:	artículo
Estado:	Versión publicada
Fecha de publicación:	2010
País:	España
Institución:	Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:	Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:	oai:recercat.cat:2445/58413
Acceso en línea:	https://hdl.handle.net/2445/58413
Access Level:	acceso abierto
Palabra clave:	Mamífers marins Biologia de poblacions Biologia marina Animals en perill d'extinció Marine mammals Population biology Marine biology Rare animals

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spelling	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.Pinela, Ana M.Borrell Thió, AssumpcióCardona Pascual, LuisAguilar, ÀlexMamífers marinsBiologia de poblacionsBiologia marinaAnimals en perill d'extincióMarine mammalsPopulation biologyMarine biologyRare animalsStable isotope abundances of carbon (δ13C) and nitrogen (δ15N) in the bone of 13 species of marine mammals from the northwest coast of Africa were investigated to assess their positions in the local trophic web and their preferred habitats. Also, samples of primary producers and potential prey species from the study area were collected to characterise the local isotopic landscape. This characterisation indicated that δ13C values increased from offshore to nearshore and that δ15N was a good proxy for trophic level. Therefore, the most coastal species were Monachus monachus and Sousa teuszii, whereas the most pelagic were Physeter macrocephalus and Balaenoptera acutorostrata. δ15N values indicated that marine mammals located at the lowest trophic level were B. acutorostrata, Stenella coeruleoalba and Delphinus sp., and those occupying the highest trophic level were M. monachus and P. macrocephalus. The trophic level of Orcinus orca was similar to that of M. monachus, suggesting that O. orca preys on fish. Conservation of coastal and threatened species (M. monachus and S. teuszii) off NW Africa should be a priority because these species, as the main apex predators, cannot be replaced by other marine mammals.Inter-Research2014201620102014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion12 p.application/pdfhttps://hdl.handle.net/2445/58413Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: http://dx.doi.org/10.3354/meps08790Marine Ecology Progress Series, 2010, vol. 416, p. 295-306http://dx.doi.org/10.3354/meps08790(c) Inter-Research, 2010info:eu-repo/semantics/openAccessoai:recercat.cat:2445/584132026-05-29T05:05:01Z
dc.title.none.fl_str_mv	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
title	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
spellingShingle	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species. Pinela, Ana M. Mamífers marins Biologia de poblacions Biologia marina Animals en perill d'extinció Marine mammals Population biology Marine biology Rare animals
title_short	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
title_full	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
title_fullStr	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
title_full_unstemmed	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
title_sort	Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.
dc.creator.none.fl_str_mv	Pinela, Ana M. Borrell Thió, Assumpció Cardona Pascual, Luis Aguilar, Àlex
author	Pinela, Ana M.
author_facet	Pinela, Ana M. Borrell Thió, Assumpció Cardona Pascual, Luis Aguilar, Àlex
author_role	author
author2	Borrell Thió, Assumpció Cardona Pascual, Luis Aguilar, Àlex
author2_role	author author author
dc.subject.none.fl_str_mv	Mamífers marins Biologia de poblacions Biologia marina Animals en perill d'extinció Marine mammals Population biology Marine biology Rare animals
topic	Mamífers marins Biologia de poblacions Biologia marina Animals en perill d'extinció Marine mammals Population biology Marine biology Rare animals
description	Stable isotope abundances of carbon (δ13C) and nitrogen (δ15N) in the bone of 13 species of marine mammals from the northwest coast of Africa were investigated to assess their positions in the local trophic web and their preferred habitats. Also, samples of primary producers and potential prey species from the study area were collected to characterise the local isotopic landscape. This characterisation indicated that δ13C values increased from offshore to nearshore and that δ15N was a good proxy for trophic level. Therefore, the most coastal species were Monachus monachus and Sousa teuszii, whereas the most pelagic were Physeter macrocephalus and Balaenoptera acutorostrata. δ15N values indicated that marine mammals located at the lowest trophic level were B. acutorostrata, Stenella coeruleoalba and Delphinus sp., and those occupying the highest trophic level were M. monachus and P. macrocephalus. The trophic level of Orcinus orca was similar to that of M. monachus, suggesting that O. orca preys on fish. Conservation of coastal and threatened species (M. monachus and S. teuszii) off NW Africa should be a priority because these species, as the main apex predators, cannot be replaced by other marine mammals.
publishDate	2010
dc.date.none.fl_str_mv	2010 2014 2014 2016
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	https://hdl.handle.net/2445/58413
url	https://hdl.handle.net/2445/58413
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
dc.relation.none.fl_str_mv	Reproducció del document publicat a: http://dx.doi.org/10.3354/meps08790 Marine Ecology Progress Series, 2010, vol. 416, p. 295-306 http://dx.doi.org/10.3354/meps08790
dc.rights.none.fl_str_mv	(c) Inter-Research, 2010 info:eu-repo/semantics/openAccess
rights_invalid_str_mv	(c) Inter-Research, 2010
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	12 p. application/pdf
dc.publisher.none.fl_str_mv	Inter-Research
publisher.none.fl_str_mv	Inter-Research
dc.source.none.fl_str_mv	Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str	Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str	Recercat. Dipósit de la Recerca de Catalunya
collection	Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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Stable isotopes unveil habitat partitioning among the marine mammals off NW Africa and reveal unique trophic niches for two globally threatened species.

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