Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report
Abstract Elasmobranchs, encompassing an array of sharks and rays, confront a threat of extinction on a global scale. The Sea of Marmara (SoM) stands out as a critical refuge for these endangered species. This study harnesses data derived from comprehensive trawl surveys, representing the first area‐...
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Online Access: | http://dx.doi.org/10.1002/aqc.4121 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.4121 |
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crwiley:10.1002/aqc.4121 2024-06-02T08:05:46+00:00 Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report Karadurmuş, Uğur Sarı, Mustafa 2024 http://dx.doi.org/10.1002/aqc.4121 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.4121 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Aquatic Conservation: Marine and Freshwater Ecosystems volume 34, issue 3 ISSN 1052-7613 1099-0755 journal-article 2024 crwiley https://doi.org/10.1002/aqc.4121 2024-05-03T10:37:34Z Abstract Elasmobranchs, encompassing an array of sharks and rays, confront a threat of extinction on a global scale. The Sea of Marmara (SoM) stands out as a critical refuge for these endangered species. This study harnesses data derived from comprehensive trawl surveys, representing the first area‐based evaluation of the elasmobranchs inhabiting the SoM. Sampling protocols were carried out at 10 separate stations along the 980‐km coastline of the SoM, each bounded by different ecological characteristics and anthropogenic influences. A total of eight shark species and six ray species were caught in the towed area of the entire the SoM. Notably, Scyliorhinus canicula and near‐threatened Raja clavata constitute more than 50% of the total abundance. Additionally, rare, and critically endangered species, including the Oxynotus centrina , Squatina squatina , Dipturus batis , and Myliobatis aquila , were documented, expanding our knowledge of their presence in the region. Spatial distribution heterogeneity was pronounced within species. Size distributions were species‐specific, and the presence of both juvenile and adult individuals suggested successful reproduction and growth. Records expand the known size range in the SoM for six shark and three ray species. It also provides first‐size information based on the total length of the S. stellaris and D. batis . Additionally, the urgent need for field‐based conservation efforts is highlighted, citing a previously unidentified important sensitive areas located in the southern part of the SoM. Article in Journal/Newspaper Dipturus batis Wiley Online Library Canicula ENVELOPE(-58.515,-58.515,-63.717,-63.717) Aquatic Conservation: Marine and Freshwater Ecosystems 34 3 |
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English |
description |
Abstract Elasmobranchs, encompassing an array of sharks and rays, confront a threat of extinction on a global scale. The Sea of Marmara (SoM) stands out as a critical refuge for these endangered species. This study harnesses data derived from comprehensive trawl surveys, representing the first area‐based evaluation of the elasmobranchs inhabiting the SoM. Sampling protocols were carried out at 10 separate stations along the 980‐km coastline of the SoM, each bounded by different ecological characteristics and anthropogenic influences. A total of eight shark species and six ray species were caught in the towed area of the entire the SoM. Notably, Scyliorhinus canicula and near‐threatened Raja clavata constitute more than 50% of the total abundance. Additionally, rare, and critically endangered species, including the Oxynotus centrina , Squatina squatina , Dipturus batis , and Myliobatis aquila , were documented, expanding our knowledge of their presence in the region. Spatial distribution heterogeneity was pronounced within species. Size distributions were species‐specific, and the presence of both juvenile and adult individuals suggested successful reproduction and growth. Records expand the known size range in the SoM for six shark and three ray species. It also provides first‐size information based on the total length of the S. stellaris and D. batis . Additionally, the urgent need for field‐based conservation efforts is highlighted, citing a previously unidentified important sensitive areas located in the southern part of the SoM. |
format |
Article in Journal/Newspaper |
author |
Karadurmuş, Uğur Sarı, Mustafa |
spellingShingle |
Karadurmuş, Uğur Sarı, Mustafa Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report |
author_facet |
Karadurmuş, Uğur Sarı, Mustafa |
author_sort |
Karadurmuş, Uğur |
title |
Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report |
title_short |
Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report |
title_full |
Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report |
title_fullStr |
Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report |
title_full_unstemmed |
Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report |
title_sort |
distribution and diversity of elasmobranchs in the sea of marmara: a 2023 status report |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1002/aqc.4121 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.4121 |
long_lat |
ENVELOPE(-58.515,-58.515,-63.717,-63.717) |
geographic |
Canicula |
geographic_facet |
Canicula |
genre |
Dipturus batis |
genre_facet |
Dipturus batis |
op_source |
Aquatic Conservation: Marine and Freshwater Ecosystems volume 34, issue 3 ISSN 1052-7613 1099-0755 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/aqc.4121 |
container_title |
Aquatic Conservation: Marine and Freshwater Ecosystems |
container_volume |
34 |
container_issue |
3 |
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1800750646177038336 |