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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Online Access: | http://hdl.handle.net/10508/16139 http://hdl.handle.net/10261/323024 https://doi.org/10.12681/mms.25120 |
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ftcsic:oai:digital.csic.es:10261/323024 2024-02-11T10:06:37+01:00 Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species Bonanno, A. Barra, M. De Felice, A. Giannoulaki, M. Iglesias, Magdalena Leonori, I. Ventero, Ana Aronica, S. Biagiotti, I. Ticina, V. Genovese, S. Océan atlantique Atlantique Nord Atlantic Ocean Atlántico Norte Océano Atlántico ICES North Atlantic 2021-12-27 http://hdl.handle.net/10508/16139 http://hdl.handle.net/10261/323024 https://doi.org/10.12681/mms.25120 en eng Centro Oceanográfico de Baleares Postprint Mediterranean Marine Science, 22/4. 2021: 784-799 1108-393X http://hdl.handle.net/10508/16139 http://hdl.handle.net/10261/323024 https://doi.org/10.12681/mms.25120 50431 1791-6763 open Day-night acoustic comparison Pesquerías Centro Oceanográfico de Baleares small pelagic species Mediterranean Sea MEDIAS artículo http://purl.org/coar/resource_type/c_6501 2021 ftcsic https://doi.org/10.12681/mms.25120 2024-01-16T11:46:57Z 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. SI Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Mediterranean Marine Science 22 4 784 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Day-night acoustic comparison Pesquerías Centro Oceanográfico de Baleares small pelagic species Mediterranean Sea MEDIAS |
spellingShingle |
Day-night acoustic comparison Pesquerías Centro Oceanográfico de Baleares small pelagic species Mediterranean Sea MEDIAS Bonanno, A. Barra, M. De Felice, A. Giannoulaki, M. Iglesias, Magdalena Leonori, I. Ventero, Ana Aronica, S. Biagiotti, I. Ticina, V. Genovese, S. Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species |
topic_facet |
Day-night acoustic comparison Pesquerías Centro Oceanográfico de Baleares 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. SI |
format |
Article in Journal/Newspaper |
author |
Bonanno, A. Barra, M. De Felice, A. Giannoulaki, M. Iglesias, Magdalena Leonori, I. Ventero, Ana Aronica, S. Biagiotti, I. Ticina, V. Genovese, S. |
author_facet |
Bonanno, A. Barra, M. De Felice, A. Giannoulaki, M. Iglesias, Magdalena Leonori, I. Ventero, Ana Aronica, S. Biagiotti, I. Ticina, V. Genovese, S. |
author_sort |
Bonanno, A. |
title |
Acoustic correction factor estimate for compensating the vertical diel migration of small pelagic species |
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 |
publishDate |
2021 |
url |
http://hdl.handle.net/10508/16139 http://hdl.handle.net/10261/323024 https://doi.org/10.12681/mms.25120 |
op_coverage |
Océan atlantique Atlantique Nord Atlantic Ocean Atlántico Norte Océano Atlántico ICES North Atlantic |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Centro Oceanográfico de Baleares Postprint Mediterranean Marine Science, 22/4. 2021: 784-799 1108-393X http://hdl.handle.net/10508/16139 http://hdl.handle.net/10261/323024 https://doi.org/10.12681/mms.25120 50431 1791-6763 |
op_rights |
open |
op_doi |
https://doi.org/10.12681/mms.25120 |
container_title |
Mediterranean Marine Science |
container_volume |
22 |
container_issue |
4 |
container_start_page |
784 |
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1790604450875834368 |