First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway
This study was supported by funds from the Norwegian Polar Institute, the Norwegian Research Council (ICE-WHALES, TIGRIF and GLAERE programmes), the Norwegian Polar Institute’s ICE Centre and the Fram Centre’s Fjord and Coast Flagship. T.A.M. was partially supported by CEAUL (funded by FCT - Fundaçã...
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Online Access: | https://hdl.handle.net/10023/19740 https://doi.org/10.3354/esr01016 |
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/19740 2024-09-15T17:59:04+00:00 First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway Vacquié-garcia, J Lydersen, C Marques, T.A. Andersen, M Kovacs, Km University of St Andrews.Scottish Oceans Institute University of St Andrews.Centre for Research into Ecological & Environmental Modelling University of St Andrews.School of Mathematics and Statistics 2020-04-01T15:30:02Z 1668158 application/pdf https://hdl.handle.net/10023/19740 https://doi.org/10.3354/esr01016 eng eng Endangered Species Research 267169374 4b3dda6d-affa-4033-bc6d-de162ac2bf4d 000535262100020 Vacquié-garcia , J , Lydersen , C , Marques , T A , Andersen , M & Kovacs , K 2020 , ' First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway ' , Endangered Species Research , vol. 41 , pp. 253-263 . https://doi.org/10.3354/esr01016 1863-5407 crossref: 10.3354/esr01016 ORCID: /0000-0002-2581-1972/work/71559569 https://hdl.handle.net/10023/19740 doi:10.3354/esr01016 Copyright © The authors 2020. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are unrestricted. Authors and original publication must be credited. Beluga Arctic Baseline population estimate Climate change Environmental change Space use Adaptation Prey shifting QH301 Biology GE Environmental Sciences DAS SDG 13 - Climate Action QH301 GE Journal article 2020 ftstandrewserep https://doi.org/10.3354/esr01016 2024-08-28T00:12:18Z This study was supported by funds from the Norwegian Polar Institute, the Norwegian Research Council (ICE-WHALES, TIGRIF and GLAERE programmes), the Norwegian Polar Institute’s ICE Centre and the Fram Centre’s Fjord and Coast Flagship. T.A.M. was partially supported by CEAUL (funded by FCT - Fundação para a Ciência e a Tecnologia, Portugal, through the project UID/MAT/00006/2019). The Svalbard Archipelago (Norway) is experiencing rapid declines in the seasonal duration and extent of sea-ice cover, and local tidewater glaciers are melting. These environmental changes represent a threat to ice-associated species in the region, including white whales Delphinapterus leucas. However, no estimates of stock size or trends are available for this stock. An aerial survey was conducted during the summer of 2018, covering the coastlines of all major islands in Svalbard, as well fjords and open ocean areas. A total count was attempted for the coastlines, while coverage of the fjords and open ocean areas was designed as distance-sampling line transects. In total, 265 white whales were detected in 22 groups along the 4965 km of coastline coverage. No whales were observed on fjord (1481 km) or open ocean transects (535 km). After correcting for surface availability using behavioural data from the same area (in summer) and making adjustments for small areas not flown during the survey, the stock size was estimated to be 549 individuals (95% CI: 436-723). This estimate is surprisingly low given that this species is one of the most frequently observed cetaceans in the area, but it confirms suspicions based on difficulties in finding animals when operating white whale tagging programmes over the past decade. This first population estimate is important in the context of the rapid environmental change taking place in the Arctic and for providing a baseline for comparison with future estimates. Peer reviewed Article in Journal/Newspaper Beluga Beluga* Climate change Delphinapterus leucas Norwegian Polar Institute Sea ice Svalbard White whale University of St Andrews: Digital Research Repository Endangered Species Research 41 253 263 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Beluga Arctic Baseline population estimate Climate change Environmental change Space use Adaptation Prey shifting QH301 Biology GE Environmental Sciences DAS SDG 13 - Climate Action QH301 GE |
spellingShingle |
Beluga Arctic Baseline population estimate Climate change Environmental change Space use Adaptation Prey shifting QH301 Biology GE Environmental Sciences DAS SDG 13 - Climate Action QH301 GE Vacquié-garcia, J Lydersen, C Marques, T.A. Andersen, M Kovacs, Km First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway |
topic_facet |
Beluga Arctic Baseline population estimate Climate change Environmental change Space use Adaptation Prey shifting QH301 Biology GE Environmental Sciences DAS SDG 13 - Climate Action QH301 GE |
description |
This study was supported by funds from the Norwegian Polar Institute, the Norwegian Research Council (ICE-WHALES, TIGRIF and GLAERE programmes), the Norwegian Polar Institute’s ICE Centre and the Fram Centre’s Fjord and Coast Flagship. T.A.M. was partially supported by CEAUL (funded by FCT - Fundação para a Ciência e a Tecnologia, Portugal, through the project UID/MAT/00006/2019). The Svalbard Archipelago (Norway) is experiencing rapid declines in the seasonal duration and extent of sea-ice cover, and local tidewater glaciers are melting. These environmental changes represent a threat to ice-associated species in the region, including white whales Delphinapterus leucas. However, no estimates of stock size or trends are available for this stock. An aerial survey was conducted during the summer of 2018, covering the coastlines of all major islands in Svalbard, as well fjords and open ocean areas. A total count was attempted for the coastlines, while coverage of the fjords and open ocean areas was designed as distance-sampling line transects. In total, 265 white whales were detected in 22 groups along the 4965 km of coastline coverage. No whales were observed on fjord (1481 km) or open ocean transects (535 km). After correcting for surface availability using behavioural data from the same area (in summer) and making adjustments for small areas not flown during the survey, the stock size was estimated to be 549 individuals (95% CI: 436-723). This estimate is surprisingly low given that this species is one of the most frequently observed cetaceans in the area, but it confirms suspicions based on difficulties in finding animals when operating white whale tagging programmes over the past decade. This first population estimate is important in the context of the rapid environmental change taking place in the Arctic and for providing a baseline for comparison with future estimates. Peer reviewed |
author2 |
University of St Andrews.Scottish Oceans Institute University of St Andrews.Centre for Research into Ecological & Environmental Modelling University of St Andrews.School of Mathematics and Statistics |
format |
Article in Journal/Newspaper |
author |
Vacquié-garcia, J Lydersen, C Marques, T.A. Andersen, M Kovacs, Km |
author_facet |
Vacquié-garcia, J Lydersen, C Marques, T.A. Andersen, M Kovacs, Km |
author_sort |
Vacquié-garcia, J |
title |
First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway |
title_short |
First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway |
title_full |
First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway |
title_fullStr |
First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway |
title_full_unstemmed |
First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway |
title_sort |
first abundance estimate for white whales delphinapterus leucas in svalbard, norway |
publishDate |
2020 |
url |
https://hdl.handle.net/10023/19740 https://doi.org/10.3354/esr01016 |
genre |
Beluga Beluga* Climate change Delphinapterus leucas Norwegian Polar Institute Sea ice Svalbard White whale |
genre_facet |
Beluga Beluga* Climate change Delphinapterus leucas Norwegian Polar Institute Sea ice Svalbard White whale |
op_relation |
Endangered Species Research 267169374 4b3dda6d-affa-4033-bc6d-de162ac2bf4d 000535262100020 Vacquié-garcia , J , Lydersen , C , Marques , T A , Andersen , M & Kovacs , K 2020 , ' First abundance estimate for white whales Delphinapterus leucas in Svalbard, Norway ' , Endangered Species Research , vol. 41 , pp. 253-263 . https://doi.org/10.3354/esr01016 1863-5407 crossref: 10.3354/esr01016 ORCID: /0000-0002-2581-1972/work/71559569 https://hdl.handle.net/10023/19740 doi:10.3354/esr01016 |
op_rights |
Copyright © The authors 2020. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are unrestricted. Authors and original publication must be credited. |
op_doi |
https://doi.org/10.3354/esr01016 |
container_title |
Endangered Species Research |
container_volume |
41 |
container_start_page |
253 |
op_container_end_page |
263 |
_version_ |
1810436004032544768 |