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ALGAE > Volume 6(2); 1991 > Article
ALGAE 1991;6(2): 123-129.
The Variation of Algal Cell Volume in the Monospecific Dinoflagellate Blooms in the Southeastern Coastal Waters of Korea
Hak Gyoon Kim, Joo Suck Park, Sam Geun Lee
National Fisheries Research and Development Agency
ABSTRACT
Marine flagellates responsible for the monospecific bloom in the coastal waters of Korea were consisted of 15 genera and 21 species, of which 17 species were dinoflagellates. Another 4 species were composed of 2 species of Raphidophyceae, and one each species of Chrysophyceae and Euglenophyceae. Their species specific cell volume is varied from 1,30μm super(3)/cell to 49,235 μm super(3)/cell, and is direct proportional to cell size. In dinoflagellate bloom, the lowest algal cell volume concentration is in the range of 1.3-69 ppm with the mean of 17 ppm and 5.1-1,962 ppm with the mean of 210 ppm for the highest density in the monospecific dinoflagellate blooms. It is evident that algal cell volume concentration is more rational than the cell density for the determinism of red tide, and 1ppm for nannoplankton and 5ppm for microplankton are recommendable criteria for the lowest value of red tide. In dinoflagellate blooms, the environmental capacity is maximized either by high density in small cell size species or by high species specific cell volume in large cell size species.
Key words: cell volume, dinoflagellate blooms, nannoplankton, microplankton


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