Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter
This study was performed to aid the management of the fishery for Antarctic krill Euphausia superba. Krill are an important component of the Antarctic marine ecosystem, providing a key food source for many marine predators. Additionally, krill are the target of the largest commercial fishery in the...
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Springer Berlin Heidelberg
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9165435/ http://www.ncbi.nlm.nih.gov/pubmed/35673679 https://doi.org/10.1007/s00300-022-03039-y |
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ftpubmed:oai:pubmedcentral.nih.gov:9165435 2023-05-15T13:34:50+02:00 Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter Warwick-Evans, V. Fielding, S. Reiss, C. S. Watters, G. M. Trathan, P. N. 2022-04-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9165435/ http://www.ncbi.nlm.nih.gov/pubmed/35673679 https://doi.org/10.1007/s00300-022-03039-y en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9165435/ http://www.ncbi.nlm.nih.gov/pubmed/35673679 http://dx.doi.org/10.1007/s00300-022-03039-y © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Polar Biol Original Paper Text 2022 ftpubmed https://doi.org/10.1007/s00300-022-03039-y 2022-06-12T00:38:18Z This study was performed to aid the management of the fishery for Antarctic krill Euphausia superba. Krill are an important component of the Antarctic marine ecosystem, providing a key food source for many marine predators. Additionally, krill are the target of the largest commercial fishery in the Southern Ocean, for which annual catches have been increasing and concentrating in recent years. The krill fishery is managed by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), which has endorsed a new management framework that requires information about the spatial distribution and biomass of krill. Here, we use krill density estimates from acoustic surveys and a GAMM framework to model habitat properties associated with high krill biomass during summer and winter in the northern Antarctic Peninsula region, an area important to the commercial fishery. Our models show elevated krill density associated with the shelf break, increased sea surface temperature, moderate chlorophyll-a concentration and increased salinity. During winter, our models show associations with shallow waters (< 1500 m) with low sea-ice concentration, medium sea-level anomaly and medium current speed. Our models predict temporal averages of the distribution and density of krill, which can be used to aid CCAMLR’s revised ecosystem approach to fisheries management. Our models have the potential to help in the spatial and temporal design of future acoustic surveys that would preclude the need for modelled extrapolations. We highlight that the ecosystem approach to fisheries management of krill critically depends upon such field observations at relevant spatial and temporal scales. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00300-022-03039-y. Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Sea ice Southern Ocean PubMed Central (PMC) Antarctic Antarctic Peninsula Austral Southern Ocean The Antarctic Polar Biology 45 5 857 871 |
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English |
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Original Paper |
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Original Paper Warwick-Evans, V. Fielding, S. Reiss, C. S. Watters, G. M. Trathan, P. N. Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter |
topic_facet |
Original Paper |
description |
This study was performed to aid the management of the fishery for Antarctic krill Euphausia superba. Krill are an important component of the Antarctic marine ecosystem, providing a key food source for many marine predators. Additionally, krill are the target of the largest commercial fishery in the Southern Ocean, for which annual catches have been increasing and concentrating in recent years. The krill fishery is managed by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), which has endorsed a new management framework that requires information about the spatial distribution and biomass of krill. Here, we use krill density estimates from acoustic surveys and a GAMM framework to model habitat properties associated with high krill biomass during summer and winter in the northern Antarctic Peninsula region, an area important to the commercial fishery. Our models show elevated krill density associated with the shelf break, increased sea surface temperature, moderate chlorophyll-a concentration and increased salinity. During winter, our models show associations with shallow waters (< 1500 m) with low sea-ice concentration, medium sea-level anomaly and medium current speed. Our models predict temporal averages of the distribution and density of krill, which can be used to aid CCAMLR’s revised ecosystem approach to fisheries management. Our models have the potential to help in the spatial and temporal design of future acoustic surveys that would preclude the need for modelled extrapolations. We highlight that the ecosystem approach to fisheries management of krill critically depends upon such field observations at relevant spatial and temporal scales. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00300-022-03039-y. |
format |
Text |
author |
Warwick-Evans, V. Fielding, S. Reiss, C. S. Watters, G. M. Trathan, P. N. |
author_facet |
Warwick-Evans, V. Fielding, S. Reiss, C. S. Watters, G. M. Trathan, P. N. |
author_sort |
Warwick-Evans, V. |
title |
Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter |
title_short |
Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter |
title_full |
Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter |
title_fullStr |
Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter |
title_full_unstemmed |
Estimating the average distribution of Antarctic krill Euphausia superba at the northern Antarctic Peninsula during austral summer and winter |
title_sort |
estimating the average distribution of antarctic krill euphausia superba at the northern antarctic peninsula during austral summer and winter |
publisher |
Springer Berlin Heidelberg |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9165435/ http://www.ncbi.nlm.nih.gov/pubmed/35673679 https://doi.org/10.1007/s00300-022-03039-y |
geographic |
Antarctic Antarctic Peninsula Austral Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Sea ice Southern Ocean |
op_source |
Polar Biol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9165435/ http://www.ncbi.nlm.nih.gov/pubmed/35673679 http://dx.doi.org/10.1007/s00300-022-03039-y |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00300-022-03039-y |
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Polar Biology |
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45 |
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