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Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v38.i3.10
12 pages

Influence of Physical and Biological Factors on the Formation of the Small-Scale Structure of Bioluminescent and Acoustic Fields in the Black and Mediterranean Seas

Yu. N. Tokarev
Institute of Biology of South Seas National Academy of Sciences of Ukraine Sevastopol, Ukraine
B. G. Sokolov
Institute of Biology of the Southern Seas National Academy of Science of Ukraine Sevastopol, Ukraine

ABSTRACT

Physical and biological mechanisms giving rise to the marine planktonic aggregations and their inner structure are analyzed. In the daytime, the spatial structure of such "spots" is formed mainly under the action of physical factors. At dark hours, the role of biological (reproductive, migratory) factors in forming the heterogeneity of constituents aggregated within the "spots" increases. Biophysical methods using bioluminescence and sound volume backscattering strength are highly effective for characterizing the small-scale (tens of meter volume) structure of planktonic communities.


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