渤海底栖动物种类组成和数量分布

Species Composition and Quantitative Distributions of Biomass and Density of the Macrobenthic Infauna in the Bohai Sea

本文报道了渤海底栖动物的种类组成和数量分布。调查共获得276种底栖动物,其中腔肠动物9种,多毛类115种,软体动物75种,甲壳类59种,棘皮动物12种和脊索动物6种。生物量和栖息密度分布趋势基本一致,平均分别为22.76g/m^2和343个/m^2。生物量组成中主要是软体动物,平均为13.37g/m^2,占总生物量的58.7%。栖息密度组成中主要是甲壳类,平均为132个/m^2,占总栖息密度的38.6%。

This paper presents the results of the study of the macrobenthic infauna in the Bohai Sea. The materials for study were collected from 101 stations in June 1982—November 1983. The species composition and quantitative distributions of biomass and density were described and discussed. 276 species of macrobenthos were collected. They are Coelenterata 9 species,Polychaeta 115 species, Mollusca 75 species, Crustacea 59 species, Eehinodermata 12 species and Chordata 6 species The trends of the distributions of biomass and density were basically similar being X=22.76g·m^(-2) and (?)=343 ind·m^(-2) respectively. The biomass of Mollusca was the highest, being (?)=13,37g·m^(-2), constituting 58.7% of the total biomass. The density of Crustacea was the highest, being (?)=132 ind.m^(-2), constituting 38.6% of the total density of macrobenthic infauna.