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Analysis of 70 years of change in benthic invertebrate biodiversity in the Prince’s Islands region, Istanbul
Huseyinoglu, M.F.; Tari, G.; Günay, M.E. (2021). Analysis of 70 years of change in benthic invertebrate biodiversity in the Prince’s Islands region, Istanbul. Regional Studies in Marine Science 48: 102003. https://dx.doi.org/10.1016/j.rsma.2021.102003
In: Regional Studies in Marine Science. Elsevier: Amsterdam. ISSN 2352-4855
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| Trefwoorden |
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| Author keywords |
Biodiversity analysis; Cnidaria; Echinodermata; Mollusca; Porifera; Istanbul |
| Auteurs | | Top |
- Huseyinoglu, M.F.
- Tari, G.
- Günay, M.E.
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| Abstract |
Capital of several empires through centuries, Istanbul has been a populated city in history. However, the population has increased by a factor of 13.3 over the last seven decades, which in turn has made this megacity a hotspot of domestic and industrial pollution. Marine biodiversity around Istanbul suffered from the increased pressures due to overfishing, extensive recreational usage, extreme habitat destruction and introduction of alien species via heavy maritime traffic. 70 years before, Muzaffer Demir published a colossal marine biodiversity study in 1952. We used the organization of this publication, and particularly employed it as a methodology, combined with Underwater Visual Census for a later study between 1997–1999 which involved more than 100 scuba dives. Our study investigated the abundance status of benthic species living mainly on rocky reefs as deep as 50 meters. The investigated species represented four phyla: Cnidaria, Echinodermata, Mollusca and Porifera. Approximately 40% of cnidarians, 40% of echinoderms, 65% of molluscs, and 80% of sponges recorded in the 1950s, were not recorded during our study, particularly due to methodological differences and population collapses or local extinctions. This paper aims to analyze and compare the temporal aspects of marine biodiversity in the Prince’s Islands and Bosphorus region using several time domains; historical records, Demir’s compendium in 1952, our field study in the closing of the previous millennium, combined efforts of the Turkish Journal of Zoology in 2014 of Turkey biodiversity checklists, and the most recent literature after that. |
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