Subtidal Underwater Rock Communities of the White Sea: Structure and Interaction with Bottom Flow |
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Authors: | A S Plotkin A I Railkin E I Gerasimova A Yu Pimenov T M Sipenkova |
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Institution: | (1) S. Petersburg State University, S. Petersburg, 199034, Russia |
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Abstract: | The taxonomic composition and quantitative characteristics of typical subtidal rock communities of the White Sea (biocenosis of Laminaria and biocenosis of Lithothamnion and the sponges Polymastia arctica) were studied. The hydrodynamic activity of the near-bottom water layer within and beyond the communities was estimated using the plaster structures technique. A comparative analysis of our results and the literature data revealed three main types of interactions between the benthic community and the water flow: turbulation of the water flow (mussel banks), smoothing of turbulent pulsations (Laminaria community), and an insignificant effect on the water flow (community of Lithothamnion and sponges). |
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Keywords: | benthic communities underwater rocks near-bottom layer hydrodynamic activity White Sea Laminaria Lithothamnion Polymastia arctica |
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