Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption
Abstract Since the first observation of snow crab (Chionoecetes opilio) in the Barents Sea in 1996, the population has increased significantly, supporting a commercial fishery on the Norwegian shelf since 2012. To investigate whether the availability of benthic prey organisms may support a continued...
Published in: | ICES Journal of Marine Science |
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Oxford University Press (OUP)
2022
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsac192 https://academic.oup.com/icesjms/article-pdf/79/9/2524/49361831/fsac192.pdf |
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croxfordunivpr:10.1093/icesjms/fsac192 2024-05-12T08:01:40+00:00 Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption Holte, Børge Fuhrmann, Mona M Tandberg, Anne Helene S Hvingel, Carsten Hjelset, Ann Merete Rodil, Ivan Norwegian Institute for Water Research 2022 http://dx.doi.org/10.1093/icesjms/fsac192 https://academic.oup.com/icesjms/article-pdf/79/9/2524/49361831/fsac192.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 79, issue 9, page 2524-2539 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2022 croxfordunivpr https://doi.org/10.1093/icesjms/fsac192 2024-04-18T08:17:15Z Abstract Since the first observation of snow crab (Chionoecetes opilio) in the Barents Sea in 1996, the population has increased significantly, supporting a commercial fishery on the Norwegian shelf since 2012. To investigate whether the availability of benthic prey organisms may support a continued geographical snow crab expansion, benthic invertebrate production was studied across the central parts of the Barents Sea and around Svalbard, where snow crabs are currently absent or at low densities. Annual productivity (P/B ratio) from 66 stations collected by grab and beam trawl was estimated using a multiparameter artificial neural network model. Mean infaunal productivity and production were 0.43 yr−1 and 38.4 g ww m−2 yr−1, respectively, while the epifaunal production was considerably lower with 2.5 g ww m−2 yr−1. The proportions of epi- and infaunal production suitable as prey for snow crab were 98 and 96%, respectively. Areas close to the Polar Front represent the most attractive snow crab foraging region, having the highest benthic secondary production, high estimated primary production, and bottom water temperatures within the snow crab’s preferences. At snow crab densities of 12800 ind. km−2, high enough to support commercial fishing, their mean consumption rate was estimated to be around 1.5 g ww m−2 yr−1, which amounts to 4% of mean infaunal prey production. Food availability is, therefore, not expected to be a hindrance to further population expansion of the snow crab in the Barents Sea. Article in Journal/Newspaper Barents Sea Chionoecetes opilio Snow crab Svalbard Oxford University Press Svalbard Barents Sea ICES Journal of Marine Science 79 9 2524 2539 |
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Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Holte, Børge Fuhrmann, Mona M Tandberg, Anne Helene S Hvingel, Carsten Hjelset, Ann Merete Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Since the first observation of snow crab (Chionoecetes opilio) in the Barents Sea in 1996, the population has increased significantly, supporting a commercial fishery on the Norwegian shelf since 2012. To investigate whether the availability of benthic prey organisms may support a continued geographical snow crab expansion, benthic invertebrate production was studied across the central parts of the Barents Sea and around Svalbard, where snow crabs are currently absent or at low densities. Annual productivity (P/B ratio) from 66 stations collected by grab and beam trawl was estimated using a multiparameter artificial neural network model. Mean infaunal productivity and production were 0.43 yr−1 and 38.4 g ww m−2 yr−1, respectively, while the epifaunal production was considerably lower with 2.5 g ww m−2 yr−1. The proportions of epi- and infaunal production suitable as prey for snow crab were 98 and 96%, respectively. Areas close to the Polar Front represent the most attractive snow crab foraging region, having the highest benthic secondary production, high estimated primary production, and bottom water temperatures within the snow crab’s preferences. At snow crab densities of 12800 ind. km−2, high enough to support commercial fishing, their mean consumption rate was estimated to be around 1.5 g ww m−2 yr−1, which amounts to 4% of mean infaunal prey production. Food availability is, therefore, not expected to be a hindrance to further population expansion of the snow crab in the Barents Sea. |
author2 |
Rodil, Ivan Norwegian Institute for Water Research |
format |
Article in Journal/Newspaper |
author |
Holte, Børge Fuhrmann, Mona M Tandberg, Anne Helene S Hvingel, Carsten Hjelset, Ann Merete |
author_facet |
Holte, Børge Fuhrmann, Mona M Tandberg, Anne Helene S Hvingel, Carsten Hjelset, Ann Merete |
author_sort |
Holte, Børge |
title |
Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption |
title_short |
Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption |
title_full |
Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption |
title_fullStr |
Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption |
title_full_unstemmed |
Infaunal and epifaunal secondary production in the Barents Sea, with focus on snow crab ( Chionoecetes opilio ) prey resources and consumption |
title_sort |
infaunal and epifaunal secondary production in the barents sea, with focus on snow crab ( chionoecetes opilio ) prey resources and consumption |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/icesjms/fsac192 https://academic.oup.com/icesjms/article-pdf/79/9/2524/49361831/fsac192.pdf |
geographic |
Svalbard Barents Sea |
geographic_facet |
Svalbard Barents Sea |
genre |
Barents Sea Chionoecetes opilio Snow crab Svalbard |
genre_facet |
Barents Sea Chionoecetes opilio Snow crab Svalbard |
op_source |
ICES Journal of Marine Science volume 79, issue 9, page 2524-2539 ISSN 1054-3139 1095-9289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsac192 |
container_title |
ICES Journal of Marine Science |
container_volume |
79 |
container_issue |
9 |
container_start_page |
2524 |
op_container_end_page |
2539 |
_version_ |
1798843782090719232 |