ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013
Abundance and density distribution of four seal species (ringed, ribbon, spotted, and bearded) on spring ice was estimated based on the data from two instrumental aerial surveys in the western Bering Sea in April-May 2012 and April 2013 and compared with the previously published values. The number o...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2018
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Online Access: | https://doi.org/10.26428/1606-9919-2018-192-74-88 https://doaj.org/article/02be7b21754e41708327e9ad3aa2961f |
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ftdoajarticles:oai:doaj.org/article:02be7b21754e41708327e9ad3aa2961f 2023-10-09T21:44:31+02:00 ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 V. I. Chernook I. S. Trukhanova A. N. Vasiliev A. I. Grachev D. I. Litovka V. N. Burkanov S. V. Zagrebelny 2018-03-01T00:00:00Z https://doi.org/10.26428/1606-9919-2018-192-74-88 https://doaj.org/article/02be7b21754e41708327e9ad3aa2961f RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/359 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2018-192-74-88 https://doaj.org/article/02be7b21754e41708327e9ad3aa2961f Известия ТИНРО, Vol 192, Iss 1, Pp 74-88 (2018) инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа крылатка лахтак ларга берингово море Aquaculture. Fisheries. Angling SH1-691 article 2018 ftdoajarticles https://doi.org/10.26428/1606-9919-2018-192-74-88 2023-09-10T00:41:26Z Abundance and density distribution of four seal species (ringed, ribbon, spotted, and bearded) on spring ice was estimated based on the data from two instrumental aerial surveys in the western Bering Sea in April-May 2012 and April 2013 and compared with the previously published values. The number of ringed seals on ice was about 61,000, they were rather evenly distributed in the southern, middle and northern parts of the Russian EEZ in the Bering Sea. The estimated number of ribbon seals was about 62,000 in 2012, but only 15,000 in 2013. The number of bearded seals was estimated as 42,000 animals. The abundance and density distribution of spotted seals was shown to be a subject of significant interannual fluctuations with the maximum of about 97,000 individuals. The spotted or ribbon seals were not found in the Anadyr Bay, but importance of the Karaginsky Bay for reproduction of the phocid seals was confirmed. A large population of spotted seals was concentrated there and the ringed and bearded seals were presented there in the highest recorded density. Effectiveness of the instrumental aerial survey method application for assessing abundance and distribution of seals on sea ice was demonstrated. However, in order to estimate the real population abundance, it is essential to apply correction coefficients allowing to account for behavioural and migration processes predefining the proportion of seals available for detection. Article in Journal/Newspaper Anadyr Anadyr' Bering Sea Sea ice Берингов* Кольчатая нерпа Directory of Open Access Journals: DOAJ Articles Anadyr ENVELOPE(177.510,177.510,64.734,64.734) Anadyr’ ENVELOPE(176.233,176.233,64.882,64.882) Bering Sea Izvestiya TINRO 192 74 88 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа крылатка лахтак ларга берингово море Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа крылатка лахтак ларга берингово море Aquaculture. Fisheries. Angling SH1-691 V. I. Chernook I. S. Trukhanova A. N. Vasiliev A. I. Grachev D. I. Litovka V. N. Burkanov S. V. Zagrebelny ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 |
topic_facet |
инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа крылатка лахтак ларга берингово море Aquaculture. Fisheries. Angling SH1-691 |
description |
Abundance and density distribution of four seal species (ringed, ribbon, spotted, and bearded) on spring ice was estimated based on the data from two instrumental aerial surveys in the western Bering Sea in April-May 2012 and April 2013 and compared with the previously published values. The number of ringed seals on ice was about 61,000, they were rather evenly distributed in the southern, middle and northern parts of the Russian EEZ in the Bering Sea. The estimated number of ribbon seals was about 62,000 in 2012, but only 15,000 in 2013. The number of bearded seals was estimated as 42,000 animals. The abundance and density distribution of spotted seals was shown to be a subject of significant interannual fluctuations with the maximum of about 97,000 individuals. The spotted or ribbon seals were not found in the Anadyr Bay, but importance of the Karaginsky Bay for reproduction of the phocid seals was confirmed. A large population of spotted seals was concentrated there and the ringed and bearded seals were presented there in the highest recorded density. Effectiveness of the instrumental aerial survey method application for assessing abundance and distribution of seals on sea ice was demonstrated. However, in order to estimate the real population abundance, it is essential to apply correction coefficients allowing to account for behavioural and migration processes predefining the proportion of seals available for detection. |
format |
Article in Journal/Newspaper |
author |
V. I. Chernook I. S. Trukhanova A. N. Vasiliev A. I. Grachev D. I. Litovka V. N. Burkanov S. V. Zagrebelny |
author_facet |
V. I. Chernook I. S. Trukhanova A. N. Vasiliev A. I. Grachev D. I. Litovka V. N. Burkanov S. V. Zagrebelny |
author_sort |
V. I. Chernook |
title |
ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 |
title_short |
ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 |
title_full |
ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 |
title_fullStr |
ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 |
title_full_unstemmed |
ABUNDANCE AND DISTRIBUTION OF PHOCID SEALS ON ICE IN THE WESTERN BERING SEA IN SPRING, 2012–2013 |
title_sort |
abundance and distribution of phocid seals on ice in the western bering sea in spring, 2012–2013 |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2018 |
url |
https://doi.org/10.26428/1606-9919-2018-192-74-88 https://doaj.org/article/02be7b21754e41708327e9ad3aa2961f |
long_lat |
ENVELOPE(177.510,177.510,64.734,64.734) ENVELOPE(176.233,176.233,64.882,64.882) |
geographic |
Anadyr Anadyr’ Bering Sea |
geographic_facet |
Anadyr Anadyr’ Bering Sea |
genre |
Anadyr Anadyr' Bering Sea Sea ice Берингов* Кольчатая нерпа |
genre_facet |
Anadyr Anadyr' Bering Sea Sea ice Берингов* Кольчатая нерпа |
op_source |
Известия ТИНРО, Vol 192, Iss 1, Pp 74-88 (2018) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/359 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2018-192-74-88 https://doaj.org/article/02be7b21754e41708327e9ad3aa2961f |
op_doi |
https://doi.org/10.26428/1606-9919-2018-192-74-88 |
container_title |
Izvestiya TINRO |
container_volume |
192 |
container_start_page |
74 |
op_container_end_page |
88 |
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1779310938039517184 |