| Title: | Impact of Fishing Capacity and Environmental Parameters on Landings of Hexanchus griseus in the Sea of Marmara |
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| Authors: | ID Kabasakal, Hakan (Author)
ID Uzer, Uğur (Author)
ID Karakulak, F. Saadet (Author) |
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| Files: |  PDF - Presentation file, download (1,66 MB)
MD5: 5701F88CBAC9BC5A01E97F3D0A17C46C
 URL - Source URL, visit https://zdjp.si/wp-content/uploads/2024/12/Annales-SHN-34-2024-2-Hakan-KABASAKAL-et-al.-Impact-of-Fishing-Capacity.pdf
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IRRIS - Institute IRRIS for Research, Development and Strategies of Society, Culture and Environment
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| Abstract: | Between July 1967 and December 2023, 136 bluntnose sixgill sharks, Hexanchus griseus, were caught in the Sea of Marmara (SoM). Although both a generalised linear model (GLM) and the Mann-Kendall trend test indicated an increasing trend in annual landings of H. griseus, the estimated smoothing splines of the GLM regression trend line revealed a sharp decline in landings after 2017. While the capture depths ranged from 10 to 1,000 m since the early 2000s, the majority of specimens were caught in the shallow waters of the continental shelf. Deteriorating environmental conditions and increasing deoxygenation in the deep waters of the SoM coincide with a reduction in the capture depth of bluntnose sixgill sharks over the continental shelf. The evidence suggests an ongoing process of vertical habitat compression, which appears to be increasing the vulnerability of H. griseus to commercial fisheries in the SoM. |
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| Keywords: | Sixgill shark, overfishing, vulnerability, pollution, oxygen, decline |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2024 |
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| Year of publishing: | 2024 |
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| Number of pages: | 257-272 |
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| Numbering: | 34, 2 |
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| PID: | 20.500.12556/DiRROS-30846  |
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| UDC: | 5 |
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| DOI: | 10.19233/ASHN.2024.31 |
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| Copyright: | Imetniki avtorskih pravic na prispevkih so avtorji. CC BY-NC 4.0 |
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| Publication date in DiRROS: | 07.07.2026 |
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| Views: | 134 |
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| Downloads: | 104 |
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| Metadata: |    |
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