秋季乳山湾潮间带大型底栖动物的群落结构特征

Community Structure Characters of the Macrobenthos in the Intertidal Zone of Rushan Bay in Autumn

于2011年10月对乳山湾潮间带进行了8条断面的大型底栖动物定量调查,在调查潮间带共鉴定出大型底栖动物104种,其中多毛类45种、软体动物14种,甲壳动物37种、棘皮动物2种和其他类6种。调查潮间带大型底栖动物总平均丰度为817.22 ind/m^2,总平均生物量为14.01g/m^2。调查潮间带多样性指数在1.173~4.332,平均值为2.770。以40%相似性尺度,可将所调查潮间带站点划分为4个站组。

Macrobenthos were investigated at 8 transects in the intertidal zone of Rushan Bay in October2011. A total of 104 macrobenthic species were identified in the survey intertidal zone, of which 45 species were Polychaeta, 37 were Crustacea, 2 were Mollusca, 2 were Echinodermata, and the rest 6 species were other taxonomical groups. The average abundances and biomasses were estimated to be817.22ind./m2 and 14.01g/m2respectively. Shannon-Wiener＇s diversity index ranged between 1. 173-4. 332, with the mean value of 2. 770. Four macrobenthic station groups could be identified at the 40%similarity level according to CLUSTER.