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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Imprimir: 0018-8166
ISSN En Línea: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v36.i6.130
13 pages

Sinking Rates of Suspended Matter in Lakes of the Temperate Zone (Russia, Belorussia, and Lithuania)

L. P. Umnova
Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia


The process of sedimentation of seston, including suspended dry matter, suspended organic matter, and chlorophyll a, as well as their concentrations in water, were studied during fourteen years in eight lakes of the temperate zone by the method of sediment traps. The lakes studied differed in the content of suspended dry matter, suspended organic matter, and chlorophyll a by the factors of 40, 45 and 400 respectively. Sinking rates of these components of seston were measured. In all, 206 measurements were carried out. The values of sinking rates in the majority of cases ranged from 0.5 m/day to 1 m/day. Based on the original and literature data, it may be inferred that such sinking rates are typical of suspended matter naturally occurring in lakes of the temperate zone. Their values do not depend on the trophic level of lakes.

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