Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses

Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses

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Special issue Advances in deep-sea biology: biodiversity, ecosystem functioning and conservation.-- 13 pages, 6 figures, 6 tables

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Main Authors: Preciado, Izaskun, Cartes, Joan Enric, Punzón, Antonio, Frutos, I., López-López, Lucía, Serrano, Alberto
Other Authors: European Commission
Format: artículo biblioteca
Published: Pergamon Press 2017-03
Subjects:Food webs, Stomach contents, Stable isotopes, Trophic levels, Deep sea, Seamounts, Galicia Bank, Northeast Atlantic, Northeastern Atlantic,
Online Access:http://hdl.handle.net/10261/151049
http://dx.doi.org/10.13039/501100000780
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spelling dig-icm-es-10261-1510492023-02-03T12:07:54Z Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses Preciado, Izaskun Cartes, Joan Enric Punzón, Antonio Frutos, I. López-López, Lucía Serrano, Alberto European Commission Food webs Stomach contents Stable isotopes Trophic levels Deep sea Seamounts Galicia Bank Northeast Atlantic Northeastern Atlantic Special issue Advances in deep-sea biology: biodiversity, ecosystem functioning and conservation.-- 13 pages, 6 figures, 6 tables Trophic interactions in the deep-sea fish community of the Galicia Bank seamount (NE Atlantic) were inferred by using stomach contents analyses (SCA) and stable isotope analyses (SIA) of 27 fish species and their main prey items. Samples were collected during three surveys performed in 2009, 2010 and 2011 between 625 and 1800 m depth. Three main trophic guilds were determined using SCA data: pelagic, benthopelagic and benthic feeders, respectively. Vertically migrating macrozooplankton and meso-bathypelagic shrimps were identified to play a key role as pelagic prey for the deep sea fish community of the Galicia Bank. Habitat overlap was hardly detected; as a matter of fact, when species coexisted most of them evidenced a low dietary overlap, indicating a high degree of resource partitioning. A high potential competition, however, was observed among benthopelagic feeders, i.e.: Etmopterus spinax, Hoplostethus mediterraneus and Epigonus telescopus. A significant correlation was found between δN and δC for all the analysed species. When calculating Trophic Levels (TLs) for the main fish species, using both the SCA and SIA approaches, some discrepancies arose: TLs calculated from SIA were significantly higher than those obtained from SCA, probably indicating a higher consumption of benthic-suprabenthic prey in the previous months. During the summer, food web functioning in the Galicia Bank was more influenced by the assemblages dwelling in the water column than by deep-sea benthos, which was rather scarce in the summer samples. These discrepancies demonstrate the importance of using both approaches, SCA (snapshot of diet) and SIA (assimilated food in previous months), when attempting trophic studies, if an overview of food web dynamics in different compartments of the ecosystem is to be obtained The present work was funded by the LIFE+INDEMARES project (EC contract INDEMARES-LIFE, 07/NAT/E/000732) Peer Reviewed 2017-06-08T07:23:24Z 2017-06-08T07:23:24Z 2017-03 2017-06-08T07:23:24Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/j.dsr2.2016.07.013 issn: 0967-0645 1879-0100 Deep-Sea Research Part II: Topical Studies in Oceanography 137: 56-68 (2017) http://hdl.handle.net/10261/151049 10.1016/j.dsr2.2016.07.013 http://dx.doi.org/10.13039/501100000780 https://dx.doi.org/10.1016/j.dsr2.2016.07.013 Sí none Pergamon Press
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Food webs
Stomach contents
Stable isotopes
Trophic levels
Deep sea
Seamounts
Galicia Bank
Northeast Atlantic
Northeastern Atlantic
Food webs
Stomach contents
Stable isotopes
Trophic levels
Deep sea
Seamounts
Galicia Bank
Northeast Atlantic
Northeastern Atlantic
spellingShingle Food webs
Stomach contents
Stable isotopes
Trophic levels
Deep sea
Seamounts
Galicia Bank
Northeast Atlantic
Northeastern Atlantic
Food webs
Stomach contents
Stable isotopes
Trophic levels
Deep sea
Seamounts
Galicia Bank
Northeast Atlantic
Northeastern Atlantic
Preciado, Izaskun
Cartes, Joan Enric
Punzón, Antonio
Frutos, I.
López-López, Lucía
Serrano, Alberto
Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
description Special issue Advances in deep-sea biology: biodiversity, ecosystem functioning and conservation.-- 13 pages, 6 figures, 6 tables
author2 European Commission
author_facet European Commission
Preciado, Izaskun
Cartes, Joan Enric
Punzón, Antonio
Frutos, I.
López-López, Lucía
Serrano, Alberto
format artículo
topic_facet Food webs
Stomach contents
Stable isotopes
Trophic levels
Deep sea
Seamounts
Galicia Bank
Northeast Atlantic
Northeastern Atlantic
author Preciado, Izaskun
Cartes, Joan Enric
Punzón, Antonio
Frutos, I.
López-López, Lucía
Serrano, Alberto
author_sort Preciado, Izaskun
title Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
title_short Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
title_full Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
title_fullStr Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
title_full_unstemmed Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
title_sort food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
publisher Pergamon Press
publishDate 2017-03
url http://hdl.handle.net/10261/151049
http://dx.doi.org/10.13039/501100000780
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