Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage

Molluscan assemblages of circalittoral and bathyal soft bottoms of the northern Alboran Sea were studied using an experimental otter trawl. Samples of fauna were collected from 190 hauls during four MEDITS surveys carried out in spring between 2012 and 2015 at depths ranging from 30 to 800 m. Measur...

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Authors: Ciércoles, Cristina, García-Ruiz, Cristina, González-Aguilar, María, Ortiz-de-Urbina-Gutiérrez, José María, López-González, Nieves, Urra, Javier, Rueda, José Luis
Format: article
Status:Versión aceptada para publicación
Publication Date:2018
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/325955
Online Access:http://hdl.handle.net/10261/325955
Access Level:Open access
Keyword:Mollusc
Centro Oceanográfico de Málaga
Pesquerías
Assemblages
Demersal
Biodiversity
Alboran Sea
Fisheries
http://metadata.un.org/sdg/15
Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
geographical distribution
ecological associations
distribution
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oai_identifier_str oai:digital.csic.es:10261/325955
network_acronym_str ES
network_name_str España
repository_id_str
spelling Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkageCiércoles, CristinaGarcía-Ruiz, CristinaGonzález-Aguilar, MaríaOrtiz-de-Urbina-Gutiérrez, José MaríaLópez-González, NievesUrra, JavierRueda, José LuisMolluscCentro Oceanográfico de MálagaPesqueríasAssemblagesDemersalBiodiversityAlboran SeaFisherieshttp://metadata.un.org/sdg/15Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity lossgeographical distributionecological associationsdistributionMolluscan assemblages of circalittoral and bathyal soft bottoms of the northern Alboran Sea were studied using an experimental otter trawl. Samples of fauna were collected from 190 hauls during four MEDITS surveys carried out in spring between 2012 and 2015 at depths ranging from 30 to 800 m. Measurements of water column variables (temperature and salinity) and sediment samples were taken in the same locations where faunistic sampling was carried out. A total of 101 species grouped in 55 families were recorded. Cephalopods were the most abundant group, with Abralia veranyi dominating in abundance, Octopus vulgaris in biomass and Illex coindetii and Todarodes sagittatus being the most frequently collected species. Multivariate analyses carried out separately with abundance data of demersal species, benthic species, bivalves, gastropods and cephalopods as well as of all molluscs, generally resulted in three main molluscan assemblages corresponding to a shelf assemblage (30-200 m depth), an upper slope assemblage (201-350 m depth), and a middle slope assemblage (351-800 m depth). PERMANOVA test revealed that significant differences of different groups of molluscs in relation to depth were more acute than to geographical sectors of the Alboran Sea (eastern, central, eastern and insular sectors). Abundance, biomass and species richness decreased with depth with a clear dominance of cephalopods in the slope. Significant geographical differences were mainly detected for demersal and benthic species as well as for gastropods and cephalopods between the insular sector (Alboran Island) and the western and eastern continental sectors. Both depth and temperature were the most influencing variables in the different CCA analyses using datasets of molluscs with different life styles and from different classes, but sedimentological variables displayed a more acute significant relationship with the benthic molluscs than with the demersal ones.SI202320232018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/325955reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Málagainfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3259552026-05-22T06:33:51Z
dc.title.none.fl_str_mv Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
title Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
spellingShingle Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
Ciércoles, Cristina
Mollusc
Centro Oceanográfico de Málaga
Pesquerías
Assemblages
Demersal
Biodiversity
Alboran Sea
Fisheries
http://metadata.un.org/sdg/15
Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
geographical distribution
ecological associations
distribution
title_short Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
title_full Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
title_fullStr Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
title_full_unstemmed Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
title_sort Molluscs collected with otter trawl in the northern Alboran Sea: main assemblages, spatial distribution and environmental linkage
dc.creator.none.fl_str_mv Ciércoles, Cristina
García-Ruiz, Cristina
González-Aguilar, María
Ortiz-de-Urbina-Gutiérrez, José María
López-González, Nieves
Urra, Javier
Rueda, José Luis
author Ciércoles, Cristina
author_facet Ciércoles, Cristina
García-Ruiz, Cristina
González-Aguilar, María
Ortiz-de-Urbina-Gutiérrez, José María
López-González, Nieves
Urra, Javier
Rueda, José Luis
author_role author
author2 García-Ruiz, Cristina
González-Aguilar, María
Ortiz-de-Urbina-Gutiérrez, José María
López-González, Nieves
Urra, Javier
Rueda, José Luis
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Mollusc
Centro Oceanográfico de Málaga
Pesquerías
Assemblages
Demersal
Biodiversity
Alboran Sea
Fisheries
http://metadata.un.org/sdg/15
Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
geographical distribution
ecological associations
distribution
topic Mollusc
Centro Oceanográfico de Málaga
Pesquerías
Assemblages
Demersal
Biodiversity
Alboran Sea
Fisheries
http://metadata.un.org/sdg/15
Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
geographical distribution
ecological associations
distribution
description Molluscan assemblages of circalittoral and bathyal soft bottoms of the northern Alboran Sea were studied using an experimental otter trawl. Samples of fauna were collected from 190 hauls during four MEDITS surveys carried out in spring between 2012 and 2015 at depths ranging from 30 to 800 m. Measurements of water column variables (temperature and salinity) and sediment samples were taken in the same locations where faunistic sampling was carried out. A total of 101 species grouped in 55 families were recorded. Cephalopods were the most abundant group, with Abralia veranyi dominating in abundance, Octopus vulgaris in biomass and Illex coindetii and Todarodes sagittatus being the most frequently collected species. Multivariate analyses carried out separately with abundance data of demersal species, benthic species, bivalves, gastropods and cephalopods as well as of all molluscs, generally resulted in three main molluscan assemblages corresponding to a shelf assemblage (30-200 m depth), an upper slope assemblage (201-350 m depth), and a middle slope assemblage (351-800 m depth). PERMANOVA test revealed that significant differences of different groups of molluscs in relation to depth were more acute than to geographical sectors of the Alboran Sea (eastern, central, eastern and insular sectors). Abundance, biomass and species richness decreased with depth with a clear dominance of cephalopods in the slope. Significant geographical differences were mainly detected for demersal and benthic species as well as for gastropods and cephalopods between the insular sector (Alboran Island) and the western and eastern continental sectors. Both depth and temperature were the most influencing variables in the different CCA analyses using datasets of molluscs with different life styles and from different classes, but sedimentological variables displayed a more acute significant relationship with the benthic molluscs than with the demersal ones.
publishDate 2018
dc.date.none.fl_str_mv 2018
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/325955
url http://hdl.handle.net/10261/325955
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Málaga
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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
_version_ 1869419118094974976
score 15,812429

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