Trophic ecology of seven Antarctic gorgonian species

16 páginas, 4 figuras, 5 tablas

Detalles Bibliográficos
Autores: Elias-Piera, Francyne, Rossi, Sergio, Gili, Josep Maria, Orejas, Covadonga
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/75399
Acceso en línea:http://hdl.handle.net/10261/75399
Access Level:acceso abierto
Palabra clave:Weddell Sea
Benthic-pelagic coupling
Stable isotope
Biochemical balance
Lipids
Energy storage
Octocoral
Passive suspension feeder
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spelling Trophic ecology of seven Antarctic gorgonian speciesElias-Piera, FrancyneRossi, SergioGili, Josep MariaOrejas, CovadongaWeddell SeaBenthic-pelagic couplingStable isotopeBiochemical balanceLipidsEnergy storageOctocoralPassive suspension feeder16 páginas, 4 figuras, 5 tablasThe trophic ecology of Antarctic anthozoans and their role in benthic-pelagic coupling processes is poorly understood. We studied 7 gorgonian species (Primnoisis sp., Fannyella nodosa, Ainigmaptilon antarcticum, Notisis sp., Primnoella sp., Dasystenella sp. and Thouarella sp.) in 2 Antarctic regions: the Eastern Weddell Sea and the Bransfield Strait (Antarctic Peninsula) in austral autumn 2000, a period in which primary productivity drastically decreases. We aimed at finding the main food sources for these gorgonians and to elucidate the strategies of the 7 species in this season, relating the obtained data with their biology and ecology. Stable isotope data of the 7 gorgonian species was virtually the same as that measured in the phytodetritus of the so called ‘green carpets’ and in microzooplankton (δ13C from -27.7 to -24.8‰; δ15N from 4.1 to 7.5‰). A large proportion of the gorgonian’s diet seems to be based on sedimented and resuspended material, which supports the hypothesis that some suspension feeders deal successfully with the Antarctic winter by consuming phytoplankton sedimented in the ‘green carpets’. While stable isotope analysis suggested similar food sources for 7 species, the biochemical balance indicated different energy storage as lipid values (mean ±SD) ranged from 105.1 ± 99 to 776.4 ± 354.1 µg lipids mg-1 organic matter depending on the species. Our results contribute to a better understanding of the trophic ecology of benthic Antarctic gorgonians and their strategies for coping with autumn conditions in this polar environmentWe thank P. López-González for the species classification. F. Pagés, N. Teixidó and E. Isla are acknowledged for helping on-board. We thank the staff of RV ‘Polarstern’ and the science party of ANT XVII/3 for their help. This study was funded by a CICYT (ANT99-1608-E) project (EASIZ project) and the BENTOLARV (CTM2009-10007) project. We are grateful to C. Hughet for her suggestions to the manuscript. F.E.P. receives a grant from the National Research Council (CNPq, process 237677/2012-1). S.R. was financed with a Ramón y Cajal Contract (RyC-2007-01327). We dedicate this work to our colleague and friend F. Pagès, who was an enthusiastic Antarctic researcherPeer reviewedInter Research201320132013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/75399reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3354/meps10152info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/753992026-05-22T06:33:51Z
dc.title.none.fl_str_mv Trophic ecology of seven Antarctic gorgonian species
title Trophic ecology of seven Antarctic gorgonian species
spellingShingle Trophic ecology of seven Antarctic gorgonian species
Elias-Piera, Francyne
Weddell Sea
Benthic-pelagic coupling
Stable isotope
Biochemical balance
Lipids
Energy storage
Octocoral
Passive suspension feeder
title_short Trophic ecology of seven Antarctic gorgonian species
title_full Trophic ecology of seven Antarctic gorgonian species
title_fullStr Trophic ecology of seven Antarctic gorgonian species
title_full_unstemmed Trophic ecology of seven Antarctic gorgonian species
title_sort Trophic ecology of seven Antarctic gorgonian species
dc.creator.none.fl_str_mv Elias-Piera, Francyne
Rossi, Sergio
Gili, Josep Maria
Orejas, Covadonga
author Elias-Piera, Francyne
author_facet Elias-Piera, Francyne
Rossi, Sergio
Gili, Josep Maria
Orejas, Covadonga
author_role author
author2 Rossi, Sergio
Gili, Josep Maria
Orejas, Covadonga
author2_role author
author
author
dc.subject.none.fl_str_mv Weddell Sea
Benthic-pelagic coupling
Stable isotope
Biochemical balance
Lipids
Energy storage
Octocoral
Passive suspension feeder
topic Weddell Sea
Benthic-pelagic coupling
Stable isotope
Biochemical balance
Lipids
Energy storage
Octocoral
Passive suspension feeder
description 16 páginas, 4 figuras, 5 tablas
publishDate 2013
dc.date.none.fl_str_mv 2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/75399
url http://hdl.handle.net/10261/75399
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3354/meps10152
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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