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On the High Density of a Phytoplankton Population Found in a Lake under Ice
Author(s) -
Maeda Osamu,
Ichimura ShunEi
Publication year - 1973
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19730580507
Subject(s) - phytoplankton , photosynthesis , oceanography , environmental science , heterotroph , population , organic matter , ecology , biology , geology , botany , nutrient , bacteria , paleontology , demography , sociology
The growth of phytoplankton in an ice‐covered lake was investigated with special reference to their photosynthetic and heterotrophic activities. Under transparent ice the photosynthetic production of organic matter was maintained enough to hold a high density of phytoplankton. When the light penetration to the water was diminished strongly by the ice‐sheet, heterotrophy contributed largely to the growth of phytoplankton.