Abstract
The relationships between the occurrence of phytoplankton and salinity or water temperature have been investigated for 8 years from 1979 to 1986 in brackish Lake Nakanoumi. Fourteen species such as Skeletonema costatum, Prorocentrum minimum and Cyclotella nana were dominant in this lake. Five among the 14 species bloomed in conditions of water temperature less than optimal for their growth, whereas every species bloomed in optimum salinity conditions. This fact indicates that the occurrence of dominant species in the lake is more strongly controlled by salinity than water temperature.The result of comparison of weighted mean value of water temperature and salinity for the two periods of 1974-1978 and 1979-1986 also indicated the greater importance of salinity than water temperature.
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Schedule a callMore From: Japanese Journal of Limnology (Rikusuigaku Zasshi)
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