Mesopelagic fish avoidance from the vessel dynamic positioning system

The study of marine organism behaviour and vertical distribution requires the use of techniques that do not disturb their natural state. This study analyses the mesopelagic fishes behaviour influenced by the presence of a research vessel. Acoustic data recorded on board the RV “A´ngeles Alvarino” du...

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Detalhes bibliográficos
Autor: Peña Saenz, Marian
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/318624
Acesso em linha:https://academic.oup.com/icesjms/article-pdf/76/3/734/31238769/fsy157.pdf
http://hdl.handle.net/10261/318624
Access Level:acceso abierto
Palavra-chave:Medio Marino y Protección Ambiental
avoidance
Centro Oceanográfico de Baleares
dynamic positioning system
mesopelagic fish
migration
scattering layers.
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repository_id_str
spelling Mesopelagic fish avoidance from the vessel dynamic positioning systemPeña Saenz, MarianMedio Marino y Protección AmbientalavoidanceCentro Oceanográfico de Balearesdynamic positioning systemmesopelagic fishmigrationscattering layers.The study of marine organism behaviour and vertical distribution requires the use of techniques that do not disturb their natural state. This study analyses the mesopelagic fishes behaviour influenced by the presence of a research vessel. Acoustic data recorded on board the RV “A´ngeles Alvarino” during the RAPROCAN 2017 survey showed a clear pattern of mesopelagic fishes migrating deeper in the water col- ~ umn at night when the DP system was connected. Details on how the scatterers changed their trajectory when migrating to the surface at night and the progressive increase in avoidance depth when dawn approached is shown. An experiment was carried out to discern fish reaction to vessel lights and to the DP system. While a dispersed diving was detected when the lights were switched on, a more acute reaction to the DP system was registered with not only vertical displacement, but also an increment in scattering produced by an aggregating behaviour. Both vessel DP-noise and light modify the mesopelagic fish behaviour, which needs to be accounted for when studying mesopelagic layers close to the surface. Surveys aiming at estimating abundance and biomass from these species are encouraged to do so at day time.SíOxford University Press202320232019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501https://academic.oup.com/icesjms/article-pdf/76/3/734/31238769/fsy157.pdfhttp://hdl.handle.net/10261/318624reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Balearesinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3186242026-05-22T06:33:51Z
dc.title.none.fl_str_mv Mesopelagic fish avoidance from the vessel dynamic positioning system
title Mesopelagic fish avoidance from the vessel dynamic positioning system
spellingShingle Mesopelagic fish avoidance from the vessel dynamic positioning system
Peña Saenz, Marian
Medio Marino y Protección Ambiental
avoidance
Centro Oceanográfico de Baleares
dynamic positioning system
mesopelagic fish
migration
scattering layers.
title_short Mesopelagic fish avoidance from the vessel dynamic positioning system
title_full Mesopelagic fish avoidance from the vessel dynamic positioning system
title_fullStr Mesopelagic fish avoidance from the vessel dynamic positioning system
title_full_unstemmed Mesopelagic fish avoidance from the vessel dynamic positioning system
title_sort Mesopelagic fish avoidance from the vessel dynamic positioning system
dc.creator.none.fl_str_mv Peña Saenz, Marian
author Peña Saenz, Marian
author_facet Peña Saenz, Marian
author_role author
dc.subject.none.fl_str_mv Medio Marino y Protección Ambiental
avoidance
Centro Oceanográfico de Baleares
dynamic positioning system
mesopelagic fish
migration
scattering layers.
topic Medio Marino y Protección Ambiental
avoidance
Centro Oceanográfico de Baleares
dynamic positioning system
mesopelagic fish
migration
scattering layers.
description The study of marine organism behaviour and vertical distribution requires the use of techniques that do not disturb their natural state. This study analyses the mesopelagic fishes behaviour influenced by the presence of a research vessel. Acoustic data recorded on board the RV “A´ngeles Alvarino” during the RAPROCAN 2017 survey showed a clear pattern of mesopelagic fishes migrating deeper in the water col- ~ umn at night when the DP system was connected. Details on how the scatterers changed their trajectory when migrating to the surface at night and the progressive increase in avoidance depth when dawn approached is shown. An experiment was carried out to discern fish reaction to vessel lights and to the DP system. While a dispersed diving was detected when the lights were switched on, a more acute reaction to the DP system was registered with not only vertical displacement, but also an increment in scattering produced by an aggregating behaviour. Both vessel DP-noise and light modify the mesopelagic fish behaviour, which needs to be accounted for when studying mesopelagic layers close to the surface. Surveys aiming at estimating abundance and biomass from these species are encouraged to do so at day time.
publishDate 2019
dc.date.none.fl_str_mv 2019
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 https://academic.oup.com/icesjms/article-pdf/76/3/734/31238769/fsy157.pdf
http://hdl.handle.net/10261/318624
url https://academic.oup.com/icesjms/article-pdf/76/3/734/31238769/fsy157.pdf
http://hdl.handle.net/10261/318624
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Baleares
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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 15,811543

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