heterotrophic phase of plankton succession in the Japan Sea

The vertical structure, composition and productivity of a plankton community was studied in the Japan Sea in June, 1972 during a period of thermocline formation; the parameters measured were: phytoplankton production and biomass; number, biomass, and production of planktonic bacteria; biomass of pha...

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Bibliographic Details
Published in:Marine biology 1977-01, Vol.41 (2), p.107-117
Main Author: Sorokin, Yu.I
Format: Article
Language:English
Subjects:
Algae
Appendicularia
Bacteria
Ciliata
Crustacea
Diatomaceae
Flagellata
Marine
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Summary:The vertical structure, composition and productivity of a plankton community was studied in the Japan Sea in June, 1972 during a period of thermocline formation; the parameters measured were: phytoplankton production and biomass; number, biomass, and production of planktonic bacteria; biomass of phagotrophic flagellates, ciliates and remaining microzooplankton. The concn of micro-and mesozooplankton attained a basic maximum in a layer near the upper part of the thermocline. The biomass and calculated production of the heterotrophic part of the community exceeded considerably the amount of primary production. The heterotrophic phase of the seasonal succession of a plankton community in a temperate sea is described, when heterotrophic metabolism and production predominate. Heterotrophs at this stage use mostly energy from organic matter accumulated during the previous spring phytoplankton 'bloom'.
ISSN:0025-3162
1432-1793
DOI:10.1007/bf00394018