Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species

Differences in acoustic estimates of small pelagic fish biomass, due to data acquisition during daytime and night-time surveys, have been recognized as a problem in acoustic surveys for many years. In the absence of a single rule for all species and for all locations, some expert groups have identif...

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Autores: Bonanno, A., Barra, Marco, De Felice, A., Giannoulaki, Marianna, Iglesias, Magdalena, Leonori, I., Ventero, Ana, Aronica, S., Biagiotti, I., Tičina, Vjekoslav, Genovese, S.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/323024
Acceso en línea:http://hdl.handle.net/10261/323024
https://doi.org/10.12681/mms.25120
Access Level:acceso abierto
Palabra clave:Day-night acoustic comparison
Centro Oceanográfico de Baleares
Pesquerías
small pelagic species
Mediterranean Sea
MEDIAS
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repository_id_str
spelling Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic speciesBonanno, A.Barra, MarcoDe Felice, A.Giannoulaki, MariannaIglesias, MagdalenaLeonori, I.Ventero, AnaAronica, S.Biagiotti, I.Tičina, VjekoslavGenovese, S.Day-night acoustic comparisonCentro Oceanográfico de BalearesPesqueríassmall pelagic speciesMediterranean SeaMEDIASDifferences in acoustic estimates of small pelagic fish biomass, due to data acquisition during daytime and night-time surveys, have been recognized as a problem in acoustic surveys for many years. In the absence of a single rule for all species and for all locations, some expert groups have identified specific time intervals for acoustic data acquisition in relation to the schooling behavior of the target species. In the Mediterranean Sea, the research groups working in the MEDIAS (Mediterranean International Acoustic Survey) agreed on the necessity of acoustic sampling being conducted only during daytime. Only when available time does not permit to complete the survey during daytime, data collection might be extended. In this case, working on data collected during both daytime and night-time, a bias may occur in the biomass estimates. To evaluate and correct such bias, specific experiments were performed in some geographical subareas of the Mediterranean Sea. The data analysis allowed the estimation of a mean correction factor for the Strait of Sicily, where five surveys were carried out in different years. The correction factor was also estimated for the Adriatic Sea, Tyrrhenian Sea and northern Spain; the observed variability among areas highlighted the importance of the spatial and temporal coverage of the survey area to obtain reliable estimates of the correction factor. Further studies are necessary to improve the interpretation of the obtained estimates in relation to area-related peculiarities such as zooplankton composition and abundance along with small pelagic fish community structure.SIConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/323024https://doi.org/10.12681/mms.25120reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de BalearesSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3230242026-05-22T06:33:51Z
dc.title.none.fl_str_mv Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
title Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
spellingShingle Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
Bonanno, A.
Day-night acoustic comparison
Centro Oceanográfico de Baleares
Pesquerías
small pelagic species
Mediterranean Sea
MEDIAS
title_short Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
title_full Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
title_fullStr Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
title_full_unstemmed Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
title_sort Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species
dc.creator.none.fl_str_mv Bonanno, A.
Barra, Marco
De Felice, A.
Giannoulaki, Marianna
Iglesias, Magdalena
Leonori, I.
Ventero, Ana
Aronica, S.
Biagiotti, I.
Tičina, Vjekoslav
Genovese, S.
author Bonanno, A.
author_facet Bonanno, A.
Barra, Marco
De Felice, A.
Giannoulaki, Marianna
Iglesias, Magdalena
Leonori, I.
Ventero, Ana
Aronica, S.
Biagiotti, I.
Tičina, Vjekoslav
Genovese, S.
author_role author
author2 Barra, Marco
De Felice, A.
Giannoulaki, Marianna
Iglesias, Magdalena
Leonori, I.
Ventero, Ana
Aronica, S.
Biagiotti, I.
Tičina, Vjekoslav
Genovese, S.
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Day-night acoustic comparison
Centro Oceanográfico de Baleares
Pesquerías
small pelagic species
Mediterranean Sea
MEDIAS
topic Day-night acoustic comparison
Centro Oceanográfico de Baleares
Pesquerías
small pelagic species
Mediterranean Sea
MEDIAS
description Differences in acoustic estimates of small pelagic fish biomass, due to data acquisition during daytime and night-time surveys, have been recognized as a problem in acoustic surveys for many years. In the absence of a single rule for all species and for all locations, some expert groups have identified specific time intervals for acoustic data acquisition in relation to the schooling behavior of the target species. In the Mediterranean Sea, the research groups working in the MEDIAS (Mediterranean International Acoustic Survey) agreed on the necessity of acoustic sampling being conducted only during daytime. Only when available time does not permit to complete the survey during daytime, data collection might be extended. In this case, working on data collected during both daytime and night-time, a bias may occur in the biomass estimates. To evaluate and correct such bias, specific experiments were performed in some geographical subareas of the Mediterranean Sea. The data analysis allowed the estimation of a mean correction factor for the Strait of Sicily, where five surveys were carried out in different years. The correction factor was also estimated for the Adriatic Sea, Tyrrhenian Sea and northern Spain; the observed variability among areas highlighted the importance of the spatial and temporal coverage of the survey area to obtain reliable estimates of the correction factor. Further studies are necessary to improve the interpretation of the obtained estimates in relation to area-related peculiarities such as zooplankton composition and abundance along with small pelagic fish community structure.
publishDate 2021
dc.date.none.fl_str_mv 2021
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/10261/323024
https://doi.org/10.12681/mms.25120
url http://hdl.handle.net/10261/323024
https://doi.org/10.12681/mms.25120
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Baleares
Sí
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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score 15.811543

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