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Hydrobiological Journal
SJR: 0.217 SNIP: 0.575 CiteScore™: 0.24

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

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v40.i5.10
12 pages

Primary Production of Phytoplankton of Various Dimensional Fractions

L. A. Shchur
Institute of Biophysics, Siberian Branch, Akademgorodok; Institute of Computerized Simulation Siberian Department Russian Academy of Sciences; Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia
A. D. Aponasenko
Institute of Computerized Simulation Siberian Department Russian Academy of Sciences; Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia
V. N. Lopatin
Institute of Computerized Simulation, Siberian Department, Russian Academy of Sciences; and Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia
P. V. Pozhilenkova
Institute of Computerized Simulation, Siberian Department, Russian Academy of Sciences; and Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia

ABSTRAKT

The contribution of small fractions of phytoplankton to its specific primary production was investigated. Primary production was determined in the samples containing various dimensional fractions of algae. Samples were filtered through the miller's gauze N 72, and also through the nucleopore filters with 4.5 μm sieve openings. It has been found that the contribution of small fractions of phytoplankton to the total production of organic matter is rather high. A high specific production of small fractions of algae (22.2−567 days−1) is conditioned by a relatively high content of chlorophyll in their cells (1.4−9.8 %) as compared to larger fractions (2.5−320 days−1 and 0.37−5.40 %, respectively), and also by a higher intensity of transformation of the absorbed energy.


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