Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds

To study the highly complex deep-sea habitats of the Cantabrian Sea and their macro-epibenthic communities a new towed underwater sled was designed to carry out quantitative visual transects based on photogrammetric analysis. The main objective of the study was undertaken to provide a first approach...

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Detalles Bibliográficos
Autores: Sánchez, Francisco, Serrano López, Alberto, Gómez-Ballesteros, María
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/326789
Acceso en línea:http://hdl.handle.net/10261/326789
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Santander
Pesquerías
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spelling Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard groundsSánchez, FranciscoSerrano López, AlbertoGómez-Ballesteros, MaríaCentro Oceanográfico de SantanderPesqueríasTo study the highly complex deep-sea habitats of the Cantabrian Sea and their macro-epibenthic communities a new towed underwater sled was designed to carry out quantitative visual transects based on photogrammetric analysis. The main objective of the study was undertaken to provide a first approach for gaining a better understanding of the correlation between hard substrates, depth and ecology in this region; thereby enabling researchers to determine the extent to which benthic communities depend on physical factors. The results were compared from two areas with different characteristics and methodological problems: one in the central Cantabrian Sea outer shelf (150 m depth), near the head of the Lastres Canyon, and another at the summit of the Le Danois Bank (555 m depth). Two image databases corresponding to two transects were analysed, with every photo being linked to a faunal list and a set of environmental variables. To assess the amount of variation in faunal densities related to the set of habitat environmental characteristics, a redundancy analysis (RDA) was used. The set of environmental variables comprised depth, temperature, salinity, substrate type and seafloor reflectivity. Using the hierarchical classification proposed by EUNIS, three habitats were identified from a Cantabrian Sea shelf visual transect: A4.12—Sponge communities on circalittoral rock (14.5% coverage), A5.35—Circalittoral sandy mud (56.8%) and A5.44—Circalittoral mixed sediments (28.7%). A typical community appeared on the rocky habitat, made up of yellow coral Dendrophyllia cornigera and the cup sponge Phakellia ventilabrum. On Le Danois Bank, three habitats were identified and the cnidarians (Caryophyllia smithii and Callogorgia verticillata) and the sponges (Asconema setubalense, Aplysilla sp., hexactinellids) characterized rocky habitats and patchy rock-sand habitats. This study provided groundtruthing for the existing surficial seafloor features and very valuable information about the autoecology of sessile and vulnerable species, since the scale used was more appropriate for this kind of study than the macroscale of trawling, with several microhabitats being sampled in the same sample. Also, the use of this non-extractive methodology, which does not cause damage or alterations to benthic communities, is particularly necessary in vulnerable ecosystem studies and Marine Protected Areas monitoring.No202320232009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/326789reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Santanderhttps://doi.org/10.1016/j.csr.2009.01.004info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3267892026-05-22T06:33:51Z
dc.title.none.fl_str_mv Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
title Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
spellingShingle Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
Sánchez, Francisco
Centro Oceanográfico de Santander
Pesquerías
title_short Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
title_full Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
title_fullStr Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
title_full_unstemmed Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
title_sort Photogrammetric quantitative study of habitat and benthic communities of deep Cantabrian Sea hard grounds
dc.creator.none.fl_str_mv Sánchez, Francisco
Serrano López, Alberto
Gómez-Ballesteros, María
author Sánchez, Francisco
author_facet Sánchez, Francisco
Serrano López, Alberto
Gómez-Ballesteros, María
author_role author
author2 Serrano López, Alberto
Gómez-Ballesteros, María
author2_role author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Santander
Pesquerías
topic Centro Oceanográfico de Santander
Pesquerías
description To study the highly complex deep-sea habitats of the Cantabrian Sea and their macro-epibenthic communities a new towed underwater sled was designed to carry out quantitative visual transects based on photogrammetric analysis. The main objective of the study was undertaken to provide a first approach for gaining a better understanding of the correlation between hard substrates, depth and ecology in this region; thereby enabling researchers to determine the extent to which benthic communities depend on physical factors. The results were compared from two areas with different characteristics and methodological problems: one in the central Cantabrian Sea outer shelf (150 m depth), near the head of the Lastres Canyon, and another at the summit of the Le Danois Bank (555 m depth). Two image databases corresponding to two transects were analysed, with every photo being linked to a faunal list and a set of environmental variables. To assess the amount of variation in faunal densities related to the set of habitat environmental characteristics, a redundancy analysis (RDA) was used. The set of environmental variables comprised depth, temperature, salinity, substrate type and seafloor reflectivity. Using the hierarchical classification proposed by EUNIS, three habitats were identified from a Cantabrian Sea shelf visual transect: A4.12—Sponge communities on circalittoral rock (14.5% coverage), A5.35—Circalittoral sandy mud (56.8%) and A5.44—Circalittoral mixed sediments (28.7%). A typical community appeared on the rocky habitat, made up of yellow coral Dendrophyllia cornigera and the cup sponge Phakellia ventilabrum. On Le Danois Bank, three habitats were identified and the cnidarians (Caryophyllia smithii and Callogorgia verticillata) and the sponges (Asconema setubalense, Aplysilla sp., hexactinellids) characterized rocky habitats and patchy rock-sand habitats. This study provided groundtruthing for the existing surficial seafloor features and very valuable information about the autoecology of sessile and vulnerable species, since the scale used was more appropriate for this kind of study than the macroscale of trawling, with several microhabitats being sampled in the same sample. Also, the use of this non-extractive methodology, which does not cause damage or alterations to benthic communities, is particularly necessary in vulnerable ecosystem studies and Marine Protected Areas monitoring.
publishDate 2009
dc.date.none.fl_str_mv 2009
2023
2023
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/10261/326789
url http://hdl.handle.net/10261/326789
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Santander
https://doi.org/10.1016/j.csr.2009.01.004
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
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