【摘要】 2010年9月在烟台养马岛后海海域开展了大型底栖动物调查,并进行了群落特征分析。结果表明,该海域内的大型底栖动物多毛类占绝对优势,群落间差异较小,可划分为4个群落,长叶索沙蚕(Lumbrinereis longiforlia)、钩毛虫(Sigambra sp.)、中蚓虫(Mediomastus sp.)等多毛类生物的丰度高低是构成群落差异的主要因素。栖息环境的差异是造成群落间差异的主要原因,Shannon-Wiener多样性指数为1.17～2.92,平均值为2.13。人为扰动是影响多样性水平的主要因素,在航道通过、养殖区分布的影响下,群落受到不同程度的扰动,整体稳定性较弱。更多还原

【Abstract】 Based on the data collected in the Yangma Island,Yan Tai in September 2010,the characteristics of macrobenthos community were studied.The results showed that polychaetes were numerical dominant in the area.The macrobenthos community could be divided into four groups,the abundance of Lumbrinereis longiforlia,Sigambra sp.and Mediomastus sp.Were the main differences in different groups.Such difference was mainly caused by the difference in habitat conditions.The range of Shannon-Wiener index of macrobenthos in the investigated area was 1.17 ～ 2.92,with an average of 2.13.Human disturbances were the main reasons for the differences in diversity between groups.The whole community structure of groups,which distributed in the main navigation route and mariculture area,were less stable,suggesting the sediment environment of investigated area may have been subjected to various degrees of deterioration.更多还原