Spatial variability of the chlorophyll a and the specific structure of the phytoplankton in the northwestern part of the Sea of Japan during the winter period

Autor: T. N. Gordeichuk, Vyacheslav Lobanov, S. P. Zakharkov, T. V. Morozova, E. A. Shtraikhert
Rok vydání: 2012
Předmět:
Zdroj: Oceanology. 52:354-363
ISSN: 1531-8508
0001-4370
Popis: To evaluate the structure and photosynthetic activity of the phytoplankton of the northwestern part of the Sea of Japan, the results of the surveys conducted from February 26 to March 9, 2003, during the 30th cruise of the R/V Akademik Lavrentyev were used. The species composition was considered taking into account the influences of the hydrological conditions. In particular, the studied water area was divided into four zones with various sizes of the mixed layer depth (MLD). An inverse relationship between the MLD and the content of chlorophyll a (Chl a) in various zones was established. The diatom algae were the basic dominants of the composite structure of the phytoplankton everywhere. It is revealed that, at a MLD increase, smaller forms of microalgae receive development. The intrapopulation relations are caused by the adaptation of various species of phytoplankton to the influence of external factors, among which the size of MLD is fundamental.
Databáze: OpenAIRE
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