Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic
The data collected from the RV ‘Kronprins Haakon’ work was supported by the Norwegian Ministry of Trade, Industry and Fisheries (NFD, via project number 15208), the Institute of Marine Research (IMR) and the IMR project Krill (project number 14246). The data collected from the FV ‘Cabo de Hornos’ wa...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | http://hdl.handle.net/10023/24364 https://doi.org/10.3354/meps13849 http://nora.nerc.ac.uk/id/eprint/530411/ |
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/24364 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands GC Oceanography QH301 Biology DAS GC QH301 |
spellingShingle |
Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands GC Oceanography QH301 Biology DAS GC QH301 Baines, Mick Kelly, Natalie Reichelt, Maren Lacey, Claire Pinder, Simon Fielding, Sophie Murphy, Eugene Trathan, Phil Biuw, Martin Lindstrøm, Ulf Krafft, Bjørn A. Jackson, Jennifer A. Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic |
topic_facet |
Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands GC Oceanography QH301 Biology DAS GC QH301 |
description |
The data collected from the RV ‘Kronprins Haakon’ work was supported by the Norwegian Ministry of Trade, Industry and Fisheries (NFD, via project number 15208), the Institute of Marine Research (IMR) and the IMR project Krill (project number 14246). The data collected from the FV ‘Cabo de Hornos’ was financed by the Association of Responsible Krill Harvesting Companies (ARK, www.ark-krill.org), Aker Biomarine AS (www.akerbiomarine.com), NFD via project number 15208 and the IMR project Krill. Following the cessation of whaling, South Atlantic populations of humpback Megaptera novaeangliae and some other baleen whale species are recovering, but there has been limited monitoring of their recovery in the Scotia Arc, a former whaling epicentre and a hotspot for Antarctic krill Euphausia superba. To inform the management of krill fisheries, up-to-date assessment of whale biomass and prey consumption is essential. Using a model-based approach, we provide the first estimates of whale abundance and krill consumption for South Georgia and the South Sandwich Islands and total abundance of humpback whales across their southwestern Atlantic feeding grounds, using data collected in 2019. Humpback whale abundance was estimated at 24543 (coefficient of variation, CV = 0.26; 95% CI = 14863-40528), similar to that measured in Brazil on the main wintering ground for this population. The abundance of baleen whales in South Georgia and the South Sandwich Islands, including those not identified to species level, was estimated at 43824 (CV = 0.15, 95% CI = 33509-59077). Based on the proportion of humpback whales identified during the surveys (83%), the majority of these are likely to be humpback whales. Annual krill consumption by baleen whales was estimated to be in the range 4.8 to 7.2 million tons, representing 7 to 10% of the estimated krill biomass in the region. However, there is a need to better understand feeding rates in baleen whales, and further research into this field should be a priority to improve the accuracy and ... |
author2 |
University of St Andrews. School of Biology University of St Andrews. Sea Mammal Research Unit |
format |
Article in Journal/Newspaper |
author |
Baines, Mick Kelly, Natalie Reichelt, Maren Lacey, Claire Pinder, Simon Fielding, Sophie Murphy, Eugene Trathan, Phil Biuw, Martin Lindstrøm, Ulf Krafft, Bjørn A. Jackson, Jennifer A. |
author_facet |
Baines, Mick Kelly, Natalie Reichelt, Maren Lacey, Claire Pinder, Simon Fielding, Sophie Murphy, Eugene Trathan, Phil Biuw, Martin Lindstrøm, Ulf Krafft, Bjørn A. Jackson, Jennifer A. |
author_sort |
Baines, Mick |
title |
Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic |
title_short |
Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic |
title_full |
Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic |
title_fullStr |
Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic |
title_full_unstemmed |
Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic |
title_sort |
population abundance of recovering humpback whales megaptera novaeangliae and other baleen whales in scotia arc, south atlantic |
publishDate |
2021 |
url |
http://hdl.handle.net/10023/24364 https://doi.org/10.3354/meps13849 http://nora.nerc.ac.uk/id/eprint/530411/ |
long_lat |
ENVELOPE(-33.000,-33.000,-56.000,-56.000) |
geographic |
Antarctic Sandwich Islands South Georgia South Sandwich Islands |
geographic_facet |
Antarctic Sandwich Islands South Georgia South Sandwich Islands |
genre |
Antarc* Antarctic Antarctic Krill baleen whale baleen whales Euphausia superba Humpback Whale Megaptera novaeangliae South Sandwich Islands |
genre_facet |
Antarc* Antarctic Antarctic Krill baleen whale baleen whales Euphausia superba Humpback Whale Megaptera novaeangliae South Sandwich Islands |
op_relation |
Marine Ecology Progress Series Baines , M , Kelly , N , Reichelt , M , Lacey , C , Pinder , S , Fielding , S , Murphy , E , Trathan , P , Biuw , M , Lindstrøm , U , Krafft , B A & Jackson , J A 2021 , ' Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic ' , Marine Ecology Progress Series , vol. 676 , pp. 77-94 . https://doi.org/10.3354/meps13849 0171-8630 PURE: 276280608 PURE UUID: 673ea2cd-260c-4d44-b89c-e8a0b93f6fca ORCID: /0000-0003-0541-8193/work/103511029 WOS: 000714439800005 http://hdl.handle.net/10023/24364 https://doi.org/10.3354/meps13849 http://nora.nerc.ac.uk/id/eprint/530411/ |
op_rights |
Copyright © 2021 Inter-Research. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.3354/meps13849 . |
op_doi |
https://doi.org/10.3354/meps13849 |
container_title |
Marine Ecology Progress Series |
container_volume |
676 |
container_start_page |
77 |
op_container_end_page |
94 |
_version_ |
1770272797273096192 |
spelling |
ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/24364 2023-07-02T03:29:49+02:00 Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic Baines, Mick Kelly, Natalie Reichelt, Maren Lacey, Claire Pinder, Simon Fielding, Sophie Murphy, Eugene Trathan, Phil Biuw, Martin Lindstrøm, Ulf Krafft, Bjørn A. Jackson, Jennifer A. University of St Andrews. School of Biology University of St Andrews. Sea Mammal Research Unit 2021-11-18T17:30:02Z application/pdf http://hdl.handle.net/10023/24364 https://doi.org/10.3354/meps13849 http://nora.nerc.ac.uk/id/eprint/530411/ eng eng Marine Ecology Progress Series Baines , M , Kelly , N , Reichelt , M , Lacey , C , Pinder , S , Fielding , S , Murphy , E , Trathan , P , Biuw , M , Lindstrøm , U , Krafft , B A & Jackson , J A 2021 , ' Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic ' , Marine Ecology Progress Series , vol. 676 , pp. 77-94 . https://doi.org/10.3354/meps13849 0171-8630 PURE: 276280608 PURE UUID: 673ea2cd-260c-4d44-b89c-e8a0b93f6fca ORCID: /0000-0003-0541-8193/work/103511029 WOS: 000714439800005 http://hdl.handle.net/10023/24364 https://doi.org/10.3354/meps13849 http://nora.nerc.ac.uk/id/eprint/530411/ Copyright © 2021 Inter-Research. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.3354/meps13849 . Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands GC Oceanography QH301 Biology DAS GC QH301 Journal article 2021 ftstandrewserep https://doi.org/10.3354/meps13849 2023-06-13T18:27:57Z The data collected from the RV ‘Kronprins Haakon’ work was supported by the Norwegian Ministry of Trade, Industry and Fisheries (NFD, via project number 15208), the Institute of Marine Research (IMR) and the IMR project Krill (project number 14246). The data collected from the FV ‘Cabo de Hornos’ was financed by the Association of Responsible Krill Harvesting Companies (ARK, www.ark-krill.org), Aker Biomarine AS (www.akerbiomarine.com), NFD via project number 15208 and the IMR project Krill. Following the cessation of whaling, South Atlantic populations of humpback Megaptera novaeangliae and some other baleen whale species are recovering, but there has been limited monitoring of their recovery in the Scotia Arc, a former whaling epicentre and a hotspot for Antarctic krill Euphausia superba. To inform the management of krill fisheries, up-to-date assessment of whale biomass and prey consumption is essential. Using a model-based approach, we provide the first estimates of whale abundance and krill consumption for South Georgia and the South Sandwich Islands and total abundance of humpback whales across their southwestern Atlantic feeding grounds, using data collected in 2019. Humpback whale abundance was estimated at 24543 (coefficient of variation, CV = 0.26; 95% CI = 14863-40528), similar to that measured in Brazil on the main wintering ground for this population. The abundance of baleen whales in South Georgia and the South Sandwich Islands, including those not identified to species level, was estimated at 43824 (CV = 0.15, 95% CI = 33509-59077). Based on the proportion of humpback whales identified during the surveys (83%), the majority of these are likely to be humpback whales. Annual krill consumption by baleen whales was estimated to be in the range 4.8 to 7.2 million tons, representing 7 to 10% of the estimated krill biomass in the region. However, there is a need to better understand feeding rates in baleen whales, and further research into this field should be a priority to improve the accuracy and ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill baleen whale baleen whales Euphausia superba Humpback Whale Megaptera novaeangliae South Sandwich Islands University of St Andrews: Digital Research Repository Antarctic Sandwich Islands South Georgia ENVELOPE(-33.000,-33.000,-56.000,-56.000) South Sandwich Islands Marine Ecology Progress Series 676 77 94 |