Identifying partners at sea from joint movement metrics of pelagic pair trawlers
Abstract Here, we present an approach to identify partners at sea based on fishing track analysis, and describe this behaviour in several fleets: pelagic pair trawlers, large and small bottom otter trawlers, mid-water otter trawlers, all in the North-East Atlantic Ocean, anchovy purse-seiners in the...
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2021
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsab068 http://academic.oup.com/icesjms/article-pdf/78/5/1758/40323494/fsab068.pdf |
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croxfordunivpr:10.1093/icesjms/fsab068 2023-11-05T03:44:13+01:00 Identifying partners at sea from joint movement metrics of pelagic pair trawlers Joo, Rocío Bez, Nicolas Etienne, Marie-Pierre Marin, Pablo Goascoz, Nicolas Roux, Jérôme Mahévas, Stéphanie Jaap Poos, Jan 2021 http://dx.doi.org/10.1093/icesjms/fsab068 http://academic.oup.com/icesjms/article-pdf/78/5/1758/40323494/fsab068.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 78, issue 5, page 1758-1768 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2021 croxfordunivpr https://doi.org/10.1093/icesjms/fsab068 2023-10-06T10:41:04Z Abstract Here, we present an approach to identify partners at sea based on fishing track analysis, and describe this behaviour in several fleets: pelagic pair trawlers, large and small bottom otter trawlers, mid-water otter trawlers, all in the North-East Atlantic Ocean, anchovy purse-seiners in the South-East Pacific Ocean, and tuna purse-seiners in the western Indian Ocean. This type of behaviour is known to exist within pair trawlers, since these vessels are in pairs at least during their fishing operations. To identify partners at sea, we used a heuristic approach based on joint-movement metrics computed from vessel monitoring system data and Gaussian mixture models. The models were fitted to joint-movement metrics of the pelagic pair trawlers, and subsequently used to identify partners at sea in other fleets. We found partners at sea in all of the fleets except for the tuna purse-seiners. We then analysed the connections between vessels and identified exclusive partners. Exclusiveness was more common in pelagic pair trawlers and small bottom otter trawlers, with 82% and 74% of the vessels involved in partnerships having exclusive partners. This work shows that there are collective tactics at least at a pairwise level in diverse fisheries in the world. Article in Journal/Newspaper North East Atlantic Oxford University Press (via Crossref) ICES Journal of Marine Science |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
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Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Joo, Rocío Bez, Nicolas Etienne, Marie-Pierre Marin, Pablo Goascoz, Nicolas Roux, Jérôme Mahévas, Stéphanie Identifying partners at sea from joint movement metrics of pelagic pair trawlers |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Here, we present an approach to identify partners at sea based on fishing track analysis, and describe this behaviour in several fleets: pelagic pair trawlers, large and small bottom otter trawlers, mid-water otter trawlers, all in the North-East Atlantic Ocean, anchovy purse-seiners in the South-East Pacific Ocean, and tuna purse-seiners in the western Indian Ocean. This type of behaviour is known to exist within pair trawlers, since these vessels are in pairs at least during their fishing operations. To identify partners at sea, we used a heuristic approach based on joint-movement metrics computed from vessel monitoring system data and Gaussian mixture models. The models were fitted to joint-movement metrics of the pelagic pair trawlers, and subsequently used to identify partners at sea in other fleets. We found partners at sea in all of the fleets except for the tuna purse-seiners. We then analysed the connections between vessels and identified exclusive partners. Exclusiveness was more common in pelagic pair trawlers and small bottom otter trawlers, with 82% and 74% of the vessels involved in partnerships having exclusive partners. This work shows that there are collective tactics at least at a pairwise level in diverse fisheries in the world. |
author2 |
Jaap Poos, Jan |
format |
Article in Journal/Newspaper |
author |
Joo, Rocío Bez, Nicolas Etienne, Marie-Pierre Marin, Pablo Goascoz, Nicolas Roux, Jérôme Mahévas, Stéphanie |
author_facet |
Joo, Rocío Bez, Nicolas Etienne, Marie-Pierre Marin, Pablo Goascoz, Nicolas Roux, Jérôme Mahévas, Stéphanie |
author_sort |
Joo, Rocío |
title |
Identifying partners at sea from joint movement metrics of pelagic pair trawlers |
title_short |
Identifying partners at sea from joint movement metrics of pelagic pair trawlers |
title_full |
Identifying partners at sea from joint movement metrics of pelagic pair trawlers |
title_fullStr |
Identifying partners at sea from joint movement metrics of pelagic pair trawlers |
title_full_unstemmed |
Identifying partners at sea from joint movement metrics of pelagic pair trawlers |
title_sort |
identifying partners at sea from joint movement metrics of pelagic pair trawlers |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/icesjms/fsab068 http://academic.oup.com/icesjms/article-pdf/78/5/1758/40323494/fsab068.pdf |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
ICES Journal of Marine Science volume 78, issue 5, page 1758-1768 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsab068 |
container_title |
ICES Journal of Marine Science |
_version_ |
1781703595382538240 |