Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx
The Antarctic krill (Euphausia superba) fishery is the largest fishery in the Southern Ocean, and it has been operating for over 45 years. In the past decade, the spatial distribution of the krill fishery has focused on the Bransfield Strait off the Antarctic Peninsula (subarea 48.1). However, the h...
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ftfrontimediafig:oai:figshare.com:article/16962766 2023-05-15T13:53:13+02:00 Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx Rui Wang Puqing Song Yuan Li Longshan Lin 2021-11-09T11:21:02Z https://doi.org/10.3389/fmars.2021.710544.s001 https://figshare.com/articles/dataset/Data_Sheet_1_An_Integrated_Size-Structured_Stock_Assessment_of_Antarctic_Krill_Euphausia_superba_docx/16962766 unknown doi:10.3389/fmars.2021.710544.s001 https://figshare.com/articles/dataset/Data_Sheet_1_An_Integrated_Size-Structured_Stock_Assessment_of_Antarctic_Krill_Euphausia_superba_docx/16962766 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic krill integrated size-structured model stock assessment Antarctic Peninsula data weighting climate change Dataset 2021 ftfrontimediafig https://doi.org/10.3389/fmars.2021.710544.s001 2021-11-10T23:59:45Z The Antarctic krill (Euphausia superba) fishery is the largest fishery in the Southern Ocean, and it has been operating for over 45 years. In the past decade, the spatial distribution of the krill fishery has focused on the Bransfield Strait off the Antarctic Peninsula (subarea 48.1). However, the high fishing effort and climate change have placed great pressure on krill resources in this region, and conservation concerns have been raised. Because aging krill is difficult and uncertain, we developed an integrated size-structured model to estimate the fishing mortality, recruitment and spawning biomass of krill. The results indicated that in 1992–2011, the average spawning biomass of krill ranged from 1.14 × 10 6 to 1.45 × 10 6 tons, the estimated biomass of the maximum sustainable yield (BMSY) ranged from 3.96 × 10 5 to 4.90 × 10 5 tons and the estimated average recruitment ranged from 2.3 × 10 12 to 5.03 × 10 12 individuals in the research area. We explored the effect of different data weighting schemes for the length data on the assessment output. However, our estimates also have uncertainties. In addition, an attempt was made to analyze the correlation between model-estimated recruitment and mature biomass with climate change. Future stock assessments of krill resources should be comprehensive and multimethod, and the management of krill resources should be based on science that considers the demand of fishing communities and ecosystem protection. Dataset Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba Southern Ocean Frontiers: Figshare Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic krill integrated size-structured model stock assessment Antarctic Peninsula data weighting climate change |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic krill integrated size-structured model stock assessment Antarctic Peninsula data weighting climate change Rui Wang Puqing Song Yuan Li Longshan Lin Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic krill integrated size-structured model stock assessment Antarctic Peninsula data weighting climate change |
description |
The Antarctic krill (Euphausia superba) fishery is the largest fishery in the Southern Ocean, and it has been operating for over 45 years. In the past decade, the spatial distribution of the krill fishery has focused on the Bransfield Strait off the Antarctic Peninsula (subarea 48.1). However, the high fishing effort and climate change have placed great pressure on krill resources in this region, and conservation concerns have been raised. Because aging krill is difficult and uncertain, we developed an integrated size-structured model to estimate the fishing mortality, recruitment and spawning biomass of krill. The results indicated that in 1992–2011, the average spawning biomass of krill ranged from 1.14 × 10 6 to 1.45 × 10 6 tons, the estimated biomass of the maximum sustainable yield (BMSY) ranged from 3.96 × 10 5 to 4.90 × 10 5 tons and the estimated average recruitment ranged from 2.3 × 10 12 to 5.03 × 10 12 individuals in the research area. We explored the effect of different data weighting schemes for the length data on the assessment output. However, our estimates also have uncertainties. In addition, an attempt was made to analyze the correlation between model-estimated recruitment and mature biomass with climate change. Future stock assessments of krill resources should be comprehensive and multimethod, and the management of krill resources should be based on science that considers the demand of fishing communities and ecosystem protection. |
format |
Dataset |
author |
Rui Wang Puqing Song Yuan Li Longshan Lin |
author_facet |
Rui Wang Puqing Song Yuan Li Longshan Lin |
author_sort |
Rui Wang |
title |
Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx |
title_short |
Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx |
title_full |
Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx |
title_fullStr |
Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx |
title_full_unstemmed |
Data_Sheet_1_An Integrated, Size-Structured Stock Assessment of Antarctic Krill, Euphausia superba.docx |
title_sort |
data_sheet_1_an integrated, size-structured stock assessment of antarctic krill, euphausia superba.docx |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.710544.s001 https://figshare.com/articles/dataset/Data_Sheet_1_An_Integrated_Size-Structured_Stock_Assessment_of_Antarctic_Krill_Euphausia_superba_docx/16962766 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba Southern Ocean |
op_relation |
doi:10.3389/fmars.2021.710544.s001 https://figshare.com/articles/dataset/Data_Sheet_1_An_Integrated_Size-Structured_Stock_Assessment_of_Antarctic_Krill_Euphausia_superba_docx/16962766 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.710544.s001 |
_version_ |
1766258195336003584 |