ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE
Data on the distribution dynamics of the Atlantic subspecies of the walrus and the status of its habitats on islands within the Nenetsky Strict Nature Reserve were compiled and analyzed. According to the results of monitoring, walrus abundance on coastal haul-outs on the reserved islands demonstrate...
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ftdoajarticles:oai:doaj.org/article:a0c21002ce2b49049fcf159fda61c29e 2023-05-15T18:47:07+02:00 ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE Vladimir Anufriev Andrey Glotov Stanislav Zolotoi 2017-04-01T00:00:00Z https://doi.org/10.17076/them542 https://doaj.org/article/a0c21002ce2b49049fcf159fda61c29e EN RU eng rus Karelian Research Centre of the Russian Academy of Sciences http://journals.krc.karelia.ru/index.php/thematic/article/view/542 https://doaj.org/toc/1997-3217 https://doaj.org/toc/2312-4504 1997-3217 2312-4504 doi:10.17076/them542 https://doaj.org/article/a0c21002ce2b49049fcf159fda61c29e Transactions of the Karelian Research Centre of the Russian Academy of Sciences, Iss 4, Pp 15-25 (2017) морж баренцево море ненецкий заповедник динамика распространения состояние среды обитания Science Q article 2017 ftdoajarticles https://doi.org/10.17076/them542 2022-12-31T03:09:48Z Data on the distribution dynamics of the Atlantic subspecies of the walrus and the status of its habitats on islands within the Nenetsky Strict Nature Reserve were compiled and analyzed. According to the results of monitoring, walrus abundance on coastal haul-outs on the reserved islands demonstrated an upward trend in the period from 1991 to 2015. It is possible that this trend ensued not from population growth, but from the increasing role of coasts because of a reduction in ice extent and ice cover duration in the region caused by climate change, as well as because anthropogenic activities are causing more and more nuisance in marine habitats. For more reliable estimates of trends in abundance of the walrus it is necessary to develop and improve approaches to the study of the age and sex structure of the species population. Analysis of samples of near-surface seawater and bottom sediments for the content of petroleum and polycyclic aromatic hydrocarbons, mineral forms of nutrients and heavy metals in the coastal zone of the protected islands in 2014 and 2015 did not reveal concentrations in excess of allowable levels for most pollutants. At the same time, there is evidence of high concentrations of polychlorinated biphenyls in a single sample of adipose tissue of walrus from the region. It is recommended to study samples of benthic organisms, on which this species preys, for the concentration of pollutants. Walruses use haul-outs on the coast of the protected islands from July to October, with the highest concentrations observed in September and October. In this regard, in order to avoid negative impact on marine animals, it is recommended to conduct geophysical surveys at the protected islands in the first half of the navigation season, i. e. from July to mid-August. Article in Journal/Newspaper Ненец* walrus* Морж Directory of Open Access Journals: DOAJ Articles Proceedings of the Karelian Research Centre of the Russian Academy of Sciences 4 15 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
морж баренцево море ненецкий заповедник динамика распространения состояние среды обитания Science Q |
spellingShingle |
морж баренцево море ненецкий заповедник динамика распространения состояние среды обитания Science Q Vladimir Anufriev Andrey Glotov Stanislav Zolotoi ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE |
topic_facet |
морж баренцево море ненецкий заповедник динамика распространения состояние среды обитания Science Q |
description |
Data on the distribution dynamics of the Atlantic subspecies of the walrus and the status of its habitats on islands within the Nenetsky Strict Nature Reserve were compiled and analyzed. According to the results of monitoring, walrus abundance on coastal haul-outs on the reserved islands demonstrated an upward trend in the period from 1991 to 2015. It is possible that this trend ensued not from population growth, but from the increasing role of coasts because of a reduction in ice extent and ice cover duration in the region caused by climate change, as well as because anthropogenic activities are causing more and more nuisance in marine habitats. For more reliable estimates of trends in abundance of the walrus it is necessary to develop and improve approaches to the study of the age and sex structure of the species population. Analysis of samples of near-surface seawater and bottom sediments for the content of petroleum and polycyclic aromatic hydrocarbons, mineral forms of nutrients and heavy metals in the coastal zone of the protected islands in 2014 and 2015 did not reveal concentrations in excess of allowable levels for most pollutants. At the same time, there is evidence of high concentrations of polychlorinated biphenyls in a single sample of adipose tissue of walrus from the region. It is recommended to study samples of benthic organisms, on which this species preys, for the concentration of pollutants. Walruses use haul-outs on the coast of the protected islands from July to October, with the highest concentrations observed in September and October. In this regard, in order to avoid negative impact on marine animals, it is recommended to conduct geophysical surveys at the protected islands in the first half of the navigation season, i. e. from July to mid-August. |
format |
Article in Journal/Newspaper |
author |
Vladimir Anufriev Andrey Glotov Stanislav Zolotoi |
author_facet |
Vladimir Anufriev Andrey Glotov Stanislav Zolotoi |
author_sort |
Vladimir Anufriev |
title |
ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE |
title_short |
ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE |
title_full |
ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE |
title_fullStr |
ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE |
title_full_unstemmed |
ATLANTIC WALRUS MONITORING IN THE NENETSKY STRICT NATURE RESERVE |
title_sort |
atlantic walrus monitoring in the nenetsky strict nature reserve |
publisher |
Karelian Research Centre of the Russian Academy of Sciences |
publishDate |
2017 |
url |
https://doi.org/10.17076/them542 https://doaj.org/article/a0c21002ce2b49049fcf159fda61c29e |
genre |
Ненец* walrus* Морж |
genre_facet |
Ненец* walrus* Морж |
op_source |
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, Iss 4, Pp 15-25 (2017) |
op_relation |
http://journals.krc.karelia.ru/index.php/thematic/article/view/542 https://doaj.org/toc/1997-3217 https://doaj.org/toc/2312-4504 1997-3217 2312-4504 doi:10.17076/them542 https://doaj.org/article/a0c21002ce2b49049fcf159fda61c29e |
op_doi |
https://doi.org/10.17076/them542 |
container_title |
Proceedings of the Karelian Research Centre of the Russian Academy of Sciences |
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4 |
container_start_page |
15 |
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