胶州湾北部软底大型底栖动物丰度和生物量的研究

Study on the Abundance and Biomass ofMacrobenthos in the Muddy Bottom in the Northern Partof Jiaozhou Bay

1995年3～11月对胶州湾北部软底海域进行了 两月一次的大型底栖动物调查。调查期间，大型底栖动物总平均丰度和总平均生物量分别为 1891.3 inds./m2和41.9 g.w.w/m2。与该海域有关大型底栖动物丰度和生物量的历史 资料相比较，本研究所得到的大型底栖动物丰度值显著增加，生物量值则有较明显的下降， 初步分析了发生这些变化主要原因。丰度和生物量比较曲线表明，所研究海域底栖生物群落 处于中等干扰(即污染的影响 )状态。

The muddy bottom macrobenthos in the northern part of Ji aozhou Bay was investigated from March to November 1995 bimonthly. The total me an abundance and biomass are 1891.3 inds./m2 and 41.9 g*w*w/m2. Compared w ith the data published in this area on the abundance and biomass of macrobenthos , there is an increase in the present abundance and a remarkable decrease in the biomass. The comparison curves of the abundance and biomass indicate that the m acrobenthic community in this area has been disturbed (i. e. effected by polluti on) moderately.