FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016
An instrumental aerial survey was conducted in the Russian part of the Chukchi Sea and the eastern East-Siberian Sea in the spring of 2016 to investigate new technical capabilities for estimating abundance and distribution of ringed and bearded seals on the spring ice. Density of both species decrea...
Published in: | Izvestiya TINRO |
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Format: | Article in Journal/Newspaper |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2019
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Online Access: | https://doi.org/10.26428/1606-9919-2019-199-152-162 https://doaj.org/article/9f2f359a47b14f679dc5214dae7a8119 |
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ftdoajarticles:oai:doaj.org/article:9f2f359a47b14f679dc5214dae7a8119 2023-10-09T21:50:44+02:00 FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 V. I. Chernook I. S. Trukhanova A. N. Vasiliev D. I. Litovka D. M. Glazov V. N. Burkanov 2019-12-01T00:00:00Z https://doi.org/10.26428/1606-9919-2019-199-152-162 https://doaj.org/article/9f2f359a47b14f679dc5214dae7a8119 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/517 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2019-199-152-162 https://doaj.org/article/9f2f359a47b14f679dc5214dae7a8119 Известия ТИНРО, Vol 199, Iss 4, Pp 152-162 (2019) инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа лахтак морской заяц чукотское море восточно-сибирское море Aquaculture. Fisheries. Angling SH1-691 article 2019 ftdoajarticles https://doi.org/10.26428/1606-9919-2019-199-152-162 2023-09-10T00:44:26Z An instrumental aerial survey was conducted in the Russian part of the Chukchi Sea and the eastern East-Siberian Sea in the spring of 2016 to investigate new technical capabilities for estimating abundance and distribution of ringed and bearded seals on the spring ice. Density of both species decreased with distance to the mainland; the largest concentrations of ringed seals were detected in coastal waters, including the Koluchinskaya and Chaunskaya Bays. Taking into account the portion of seals in the water (on average 32 %) and the portion of seals that were disturbed by the aircraft engine noise and dove (on average 30.2 % of ringed seals and 5.9 % of bearded seals), the number of ringed seals in the surveyed area was estimated as 50,839 (СI 95 %: 25,400–73,859; CV = 23.8 %), and the number of bearded seals as 14,590 (CI 95 %: 6,404–24,560; CV = 31.1 %). These estimates are considered to be biased low, primarily due to asynchronic collapse of the ringed seal snow lairs in different parts of the surveyed area, which caused a highly variable detection probability of this species that was difficult to account for. Article in Journal/Newspaper Chukchi Chukchi Sea East Siberian Sea Erignathus barbatus Pusa hispida ringed seal Кольчатая нерпа Чукотское море Directory of Open Access Journals: DOAJ Articles Chaunskaya ENVELOPE(170.617,170.617,68.883,68.883) Chukchi Sea East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Izvestiya TINRO 199 152 162 |
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 лахтак морской заяц чукотское море восточно-сибирское море Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа лахтак морской заяц чукотское море восточно-сибирское море Aquaculture. Fisheries. Angling SH1-691 V. I. Chernook I. S. Trukhanova A. N. Vasiliev D. I. Litovka D. M. Glazov V. N. Burkanov FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 |
topic_facet |
инструментальные авиационные учеты ледовые формы тюленей численность распределение акиба кольчатая нерпа лахтак морской заяц чукотское море восточно-сибирское море Aquaculture. Fisheries. Angling SH1-691 |
description |
An instrumental aerial survey was conducted in the Russian part of the Chukchi Sea and the eastern East-Siberian Sea in the spring of 2016 to investigate new technical capabilities for estimating abundance and distribution of ringed and bearded seals on the spring ice. Density of both species decreased with distance to the mainland; the largest concentrations of ringed seals were detected in coastal waters, including the Koluchinskaya and Chaunskaya Bays. Taking into account the portion of seals in the water (on average 32 %) and the portion of seals that were disturbed by the aircraft engine noise and dove (on average 30.2 % of ringed seals and 5.9 % of bearded seals), the number of ringed seals in the surveyed area was estimated as 50,839 (СI 95 %: 25,400–73,859; CV = 23.8 %), and the number of bearded seals as 14,590 (CI 95 %: 6,404–24,560; CV = 31.1 %). These estimates are considered to be biased low, primarily due to asynchronic collapse of the ringed seal snow lairs in different parts of the surveyed area, which caused a highly variable detection probability of this species that was difficult to account for. |
format |
Article in Journal/Newspaper |
author |
V. I. Chernook I. S. Trukhanova A. N. Vasiliev D. I. Litovka D. M. Glazov V. N. Burkanov |
author_facet |
V. I. Chernook I. S. Trukhanova A. N. Vasiliev D. I. Litovka D. M. Glazov V. N. Burkanov |
author_sort |
V. I. Chernook |
title |
FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 |
title_short |
FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 |
title_full |
FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 |
title_fullStr |
FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 |
title_full_unstemmed |
FIRST INSTRUMENTAL AERIAL SURVEY OF RINGED SEALS (PUSA HISPIDA) AND BEARDED SEALS (ERIGNATHUS BARBATUS) IN THE RUSSIAN ZONE OF THE CHUKCHI AND EAST-SIBERIAN SEAS IN SPRING 2016 |
title_sort |
first instrumental aerial survey of ringed seals (pusa hispida) and bearded seals (erignathus barbatus) in the russian zone of the chukchi and east-siberian seas in spring 2016 |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2019 |
url |
https://doi.org/10.26428/1606-9919-2019-199-152-162 https://doaj.org/article/9f2f359a47b14f679dc5214dae7a8119 |
long_lat |
ENVELOPE(170.617,170.617,68.883,68.883) ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Chaunskaya Chukchi Sea East Siberian Sea |
geographic_facet |
Chaunskaya Chukchi Sea East Siberian Sea |
genre |
Chukchi Chukchi Sea East Siberian Sea Erignathus barbatus Pusa hispida ringed seal Кольчатая нерпа Чукотское море |
genre_facet |
Chukchi Chukchi Sea East Siberian Sea Erignathus barbatus Pusa hispida ringed seal Кольчатая нерпа Чукотское море |
op_source |
Известия ТИНРО, Vol 199, Iss 4, Pp 152-162 (2019) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/517 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2019-199-152-162 https://doaj.org/article/9f2f359a47b14f679dc5214dae7a8119 |
op_doi |
https://doi.org/10.26428/1606-9919-2019-199-152-162 |
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Izvestiya TINRO |
container_volume |
199 |
container_start_page |
152 |
op_container_end_page |
162 |
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1779313806018609152 |