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根据 1995年 3月至 1996年 1月胶州湾北部水域调查资料 ,对调查区浮游植物种类组成、细胞数量、优势种组成和季节变化进行了分析研究 ,并与历史资料进行了比较。结果表明 ,浮游植物主要由硅、甲藻组成 ,其中硅藻在细胞数量和种类上都占优势 ;浮游植物细胞数量平面分布的总趋势依月份而异 ;季节变化属双周期类型 :高峰期出现在 1月和 9月 ,低谷期出现于 5月和 11月 ;与历史资料不同的是 ,网采浮游植物的种类和细胞数量都呈现出不同程度的下降趋势。
According to the survey data from March 1995 to January 1996 in the northern Jiaozhou Bay waters, phytoplankton species composition, cell numbers, dominant species composition and seasonal variation were analyzed and compared with historical data. The results showed that the phytoplankton mainly consisted of silicon and dinoflagellates, of which the diatoms predominated in both the number and the type of cells. The general trend of the distribution of phytoplankton cell numbers varied according to the month. The seasonal variation was a two-cycle type: the peak appeared In January and September, the low trough occurred in May and November. Unlike the historical data, the species and cell number of phytoplankton showed a downward trend in varying degrees.