Restoration of Some Parameters in the Development of Benthos After Reduction of Anthropogenous Loading in the Ecosystem of the Sevastopol Bay in the Black Sea

Author: Shalovenkov, Nickolai

Source: Mitigation and Adaptation Strategies for Global Change, Volume 10, Number 1, January 2005 , pp. 105-113(9)

Publisher: Springer

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Abstract:

Research on benthic communities have been carried out in the Sevastopol Bay of the Black Sea for a hundred years. The anthropogenous influence began to have an effect already in the 20–30th. In this period, all oyster-banks were lost and the mussel-silt and mellina-silt communities have begun to degrade and were not found during almost seventy years in the Bay. The worst state of benthic communities was observed in the 60–90th, when species of bottom animals were not found over some parts of the sea. In this period, only 10 macrozoobenthic species were registered in the Bay. Mollusks: Nassarius reticulatus, Bittium reticulatum, Cerastoderma glaucum and polychaetes: Nephtys hombergii, Neanthes succinea have proved the most ‘enduring’ at high anthropogenous loadings The faunistic complex of benthic species registered in 1913 had the greatest similarity to the benthic species complex of 2002. Return of mussel, Melinna palmata polychaete and Ascidiella aspersa sea squirt in benthic communities of the Sevastopol Bay are responsible for the similarity between these faunistic complexes. The restoration of local populations of these benthic species has followed the significant decrease of the anthropogenous loading on the sea ecosystems as a result of the significant reduction of the military naval base in the Bay during the last five to ten years.

Keywords: Black Sea; Sevastopol Bay; Zoobenthos; abundance; biomass

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s11027-005-7833-z

Affiliations: Institute of Biology of the Southern Seas, 2 Nakhimov av. 335011 Sevastopol, Ukraine, Email: shaloven@ibss.iuf.net

Publication date: January 1, 2005

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