Population abundance of recovering humpback whales Megaptera novaeangliae and other baleen whales in Scotia Arc, South Atlantic
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 supe...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/population-abundance-of-recovering-humpback-whales-megaptera-novaeangliae-and-other-baleen-whales-in-scotia-arc-south-atlantic(673ea2cd-260c-4d44-b89c-e8a0b93f6fca).html https://doi.org/10.3354/meps13849 https://research-repository.st-andrews.ac.uk/bitstream/10023/24364/1/Baines_2021_Population_abundance_of_MEPS_AAM.pdf http://nora.nerc.ac.uk/id/eprint/530411/ |
id |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/673ea2cd-260c-4d44-b89c-e8a0b93f6fca |
---|---|
record_format |
openpolar |
spelling |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/673ea2cd-260c-4d44-b89c-e8a0b93f6fca 2023-05-15T13:39:30+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. 2021-10-14 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/population-abundance-of-recovering-humpback-whales-megaptera-novaeangliae-and-other-baleen-whales-in-scotia-arc-south-atlantic(673ea2cd-260c-4d44-b89c-e8a0b93f6fca).html https://doi.org/10.3354/meps13849 https://research-repository.st-andrews.ac.uk/bitstream/10023/24364/1/Baines_2021_Population_abundance_of_MEPS_AAM.pdf http://nora.nerc.ac.uk/id/eprint/530411/ eng eng info:eu-repo/semantics/openAccess 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 Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands article 2021 ftunstandrewcris https://doi.org/10.3354/meps13849 2022-07-21T07:01:29Z 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 precision of prey consumption rate estimation. 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: Research Portal Antarctic Sandwich Islands South Georgia ENVELOPE(-33.000,-33.000,-56.000,-56.000) South Sandwich Islands Marine Ecology Progress Series 676 77 94 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands |
spellingShingle |
Humpback whale Baleen whale Abundance Krill consumption South Georgia South Sandwich Islands 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 |
description |
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 precision of prey consumption rate estimation. |
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 |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/population-abundance-of-recovering-humpback-whales-megaptera-novaeangliae-and-other-baleen-whales-in-scotia-arc-south-atlantic(673ea2cd-260c-4d44-b89c-e8a0b93f6fca).html https://doi.org/10.3354/meps13849 https://research-repository.st-andrews.ac.uk/bitstream/10023/24364/1/Baines_2021_Population_abundance_of_MEPS_AAM.pdf 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_source |
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 |
op_rights |
info:eu-repo/semantics/openAccess |
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_ |
1766119768433098752 |