Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea
Abstract The first assessment of cetacean density and abundance by linear transect survey was conducted in 2016 and 2017 in the shallowest coastal area of the Ukrainian sector of the north-western Black Sea, in the Dzharylgach Gulf and the northern Karkinit Gulf, total area up to 259 km2. Three ceta...
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Walter de Gruyter GmbH
2017
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crdegruyter:10.1515/vzoo-2017-0038 2024-09-09T19:43:50+00:00 Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea Gladilina, E. V. Vishnyakova, K. A. Neprokin, O. O. Ivanchikova, Yu. F. Derkacheva, T. A. Kryukova, A. A. Savenko, O. V. Gol’din, P. E. 2017 http://dx.doi.org/10.1515/vzoo-2017-0038 http://content.sciendo.com/view/journals/vzoo/51/4/article-p335.xml http://www.degruyter.com/view/j/vzoo.2017.51.issue-4/vzoo-2017-0038/vzoo-2017-0038.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/4.0 Vestnik Zoologii volume 51, issue 4, page 335-342 ISSN 2073-2333 journal-article 2017 crdegruyter https://doi.org/10.1515/vzoo-2017-0038 2024-06-17T04:08:45Z Abstract The first assessment of cetacean density and abundance by linear transect survey was conducted in 2016 and 2017 in the shallowest coastal area of the Ukrainian sector of the north-western Black Sea, in the Dzharylgach Gulf and the northern Karkinit Gulf, total area up to 259 km2. Three cetacean species were found present in the area in summer, and the harbour porpoise was the most abundant species with the abundance of at least a few hundred animals (estimated as 175 individuals in the Dzharylgach Gulf), whereas the common dolphins (59) and bottlenose dolphins (31) were present in lesser numbers. Common and bottlenose dolphins showed the clearest patterns of habitat preferences, being restricted respectively to the Dzharylgach and the northern Karkinit Gulf; an unusual trait is the preference of the shallowest habitat by common dolphins. Recorded density of harbour porpoises in the Dzharylgach Gulf is among the highest in the whole Black Sea. Thus, the studied area may be an important summer habitat for cetaceans. Article in Journal/Newspaper Harbour porpoise De Gruyter Vestnik Zoologii 51 4 335 342 |
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unknown |
description |
Abstract The first assessment of cetacean density and abundance by linear transect survey was conducted in 2016 and 2017 in the shallowest coastal area of the Ukrainian sector of the north-western Black Sea, in the Dzharylgach Gulf and the northern Karkinit Gulf, total area up to 259 km2. Three cetacean species were found present in the area in summer, and the harbour porpoise was the most abundant species with the abundance of at least a few hundred animals (estimated as 175 individuals in the Dzharylgach Gulf), whereas the common dolphins (59) and bottlenose dolphins (31) were present in lesser numbers. Common and bottlenose dolphins showed the clearest patterns of habitat preferences, being restricted respectively to the Dzharylgach and the northern Karkinit Gulf; an unusual trait is the preference of the shallowest habitat by common dolphins. Recorded density of harbour porpoises in the Dzharylgach Gulf is among the highest in the whole Black Sea. Thus, the studied area may be an important summer habitat for cetaceans. |
format |
Article in Journal/Newspaper |
author |
Gladilina, E. V. Vishnyakova, K. A. Neprokin, O. O. Ivanchikova, Yu. F. Derkacheva, T. A. Kryukova, A. A. Savenko, O. V. Gol’din, P. E. |
spellingShingle |
Gladilina, E. V. Vishnyakova, K. A. Neprokin, O. O. Ivanchikova, Yu. F. Derkacheva, T. A. Kryukova, A. A. Savenko, O. V. Gol’din, P. E. Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea |
author_facet |
Gladilina, E. V. Vishnyakova, K. A. Neprokin, O. O. Ivanchikova, Yu. F. Derkacheva, T. A. Kryukova, A. A. Savenko, O. V. Gol’din, P. E. |
author_sort |
Gladilina, E. V. |
title |
Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea |
title_short |
Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea |
title_full |
Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea |
title_fullStr |
Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea |
title_full_unstemmed |
Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea |
title_sort |
linear transect surveys of abundance and density of cetaceans in the area near the dzharylgach island in the north-western black sea |
publisher |
Walter de Gruyter GmbH |
publishDate |
2017 |
url |
http://dx.doi.org/10.1515/vzoo-2017-0038 http://content.sciendo.com/view/journals/vzoo/51/4/article-p335.xml http://www.degruyter.com/view/j/vzoo.2017.51.issue-4/vzoo-2017-0038/vzoo-2017-0038.pdf |
genre |
Harbour porpoise |
genre_facet |
Harbour porpoise |
op_source |
Vestnik Zoologii volume 51, issue 4, page 335-342 ISSN 2073-2333 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0 |
op_doi |
https://doi.org/10.1515/vzoo-2017-0038 |
container_title |
Vestnik Zoologii |
container_volume |
51 |
container_issue |
4 |
container_start_page |
335 |
op_container_end_page |
342 |
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1809913511165296640 |