闽江口浮游桡足类生态研究

１９９０年５月至１９９１年１月对闽江口进行了调查，共鉴定浮游桡足类３７种，其中近岸类群的种类最多，河口种的数量占优势，并制约了桡足类总量的季节变化。数量密集区主要出现在调查区西部的岛屿及近岸水域，东部近岸水域的种类较西部丰富。多样性的分布趋势为由河口向海洋愈趋稳定。暖温带种虫肢歪水蚤和暖水种右突歪水蚤等分别在闽江口区和九龙江口区的分布，似可指示闽江口区的暖水性生态略弱于九龙江口区。

Ecological study on planktonic copepoda in Minjiang Estuary

Minjiang River is the largest river in Fujian. Its estuary was surveyed from May, 1990 to January, 1991. 37 species of planktonic copepoda were found, among them, neritic species took a higher percentage in the species composition of planktonic copepoda. The quantity of estuarine species was the most dominant and determinant in the seasonal variation of the total number of planktonic copepoda. The main aggregation of copepoda occurred at the waters around the is1ets in the west of the survey region. In the waters of east of the survey region,the species was richer than that in the west. The distribution trend of diversity showed that the nearer to the coast,the steadier, the diversity. The distribution of Tortanus vermiculus, a warm temperate species, in Minjiang Estuary and T. dextrilobatus, a warm water species,distributed in Jiulong Estuary, may well indicate attenuater warm water ecology of Mlnjiang Estuary than that of Jiulong Estuary.