Role of bivalve mollusks in the sediment balance of the Anapa Bay Bar

The sandy beaches of Anapa Bay Bar are a unique natural resource, but they are gradually being degrade under both natural and anthropogenic factors. The emissions of sand and shelly ground from the adjacent sea bottom partly compensate for this process. The concentration of carbonates may reach up t...

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Bibliographic Details
Published in:Oceanology (Washington. 1965) 2012-02, Vol.52 (1), p.72-78
Main Authors: Kosyan, A. R., Kucheruk, N. V., Flint, M. V.
Format: Article
Language:English
Subjects:
Anthropogenic factors
Beaches
Biomass
Bivalvia
Carbonates
Chamelea gallina
Donax trunculus
Earth and Environmental Science
Earth Sciences
Gastropoda
Marine
Marine Biology
Mollusks
Natural resources
Oceanography
Rapana venosa
Sediments
Shells
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Summary:The sandy beaches of Anapa Bay Bar are a unique natural resource, but they are gradually being degrade under both natural and anthropogenic factors. The emissions of sand and shelly ground from the adjacent sea bottom partly compensate for this process. The concentration of carbonates may reach up to 50% in the beach sands, and most of these carbonates are of mollusk origin. The major deposit formation role belongs to the key bivalve species: Chamelea gallina (Linnaeus, 1758). The average biomass of this mollusk species reaches up to 450 g/m 2 at the depths of 5–10 m. The other two subdominating mollusk species, the bivalve Donax trunculus (Linnaeus, 1758) and the gastropod Rapana venosa (Valenciennes, 1846), may impact as 16 g/m 2 and 6 g/m 2 , respectively. Annually, 350 kg of shelly ground per running meter are newly deposited on Anapa beach.
ISSN:0001-4370
1531-8508
DOI:10.1134/S0001437012010122