蛤蜊岗夏季大型底栖动物群落结构初步研究

2013年8月对蛤蜊岗潮间带开展了5条断面的大型底栖动物调查，每个断面布设6个站位，分析了不同调查断面的物种组成、栖息密度及生物量，并进行多样性指数、均匀度指数、聚类分析和ABC曲线分析，结果表明:(1)调查到大型底栖动物52种，各断面中，东北侧的T2断面物种数最高为33种，南部的T5断面物种数最低，为14种；(2)栖息密度、生物量均是西北部的T4断面最高，北部的T3断面最低；(3)通过聚类分析表明，各站位群落类型可主要分为4类；(4)ABC曲线分析表明，T2、T3、T5断面群落较稳定，受干扰程度较低，T1、T4断面受干扰程度较高。

Preliminary research of intertidal macrobenthic community structural features in Geligang,Liaohe estuary in summer

An investigation of macrobenthos of the intertidal zone was reported in this paper, which was carried out in Geligang, Liaohe estuary during August 2013.5 sections were set, and 6 stations are set for each section.Base on this, horizontal structures of the community species, density and biomass were analyzed.Biodiversity index, evenness index, cluster analysis, and ABC functions were carried out to describe the community structure.52 species of Macrobenthos were found in the 5 sections.The most species including 33 taxes appeared in section T2 on the northeast and the least species including 14 taxes appeared in section T5 on the south.The highest density and biomass occurred in section T4 on the northwest and the lowest density and biomass occurred in section T3 on the north.The community of each station can be divided into 4 categories according to the cluster analysis.ABC functions show that the T2, T3, and T5 sections are relatively stable, and suffered lower disturbance.On the contrary, T1 and T4 sections are highly interfered.