中街山列岛岩礁潮间带春季大型底栖动物的群落结构

于2011年春季(3月)在中街山列岛3个有居民海岛(青浜岛、庙子湖岛、东福山岛)岩礁潮间带设立4个断面,对大型底栖动物的群落结构进行了调查研究。共获得大型底栖动物17种,其中环节动物1种,节肢动物6种,软体动物10种。4个断面的平均生物量为9 651.97±3 911.92(±S.E.)g/m2,平均密度为1 804±232(±S.E.)ind./m2。优势种有厚壳贻贝(Mytilus coruscus)1种,常见种有日本笠藤壶(Tetraclita japonica)、龟足(Capitulum mitella)、嫁虫戚(Cellana toreuma)和紫贻贝(Mytilus edulis)4种。各断面丰富度指数(D)、物种多样性指数(H')、均匀度指数(J)的平均值分别为1.066±0.105(±S.E.)、1.560±0.085(±S.E.)、0.714±0.010(±S.E.)。

Community Structure of Macrobenthos in the Rocky Intertidal Zone of Zhongjieshan Archipelago in Spring

The community structure of macrobenthic fauna was investigated in the four stations in rocky intertidal zone of three inhabited islands(Miaozhihu Island,Qingbang Island and Dongfu Island) in Zhongjieshan archipelago in March 2010.17 species were found in the four stations,including 1 species of Coelenterata,6 species of Arthropoda and 10 species of Mollusca.The average biomass and density of the macrobenthic fauna in the four stations were 9 651.97±3 911.92(±S.E.) g/m2 and 1 804±232(±S.E.) ind/m2,respectively.And there was only 1 species(Mytilus coruscus) of dominant species,the common species were Tetraclita japonica,Capitulum mitella,Cellana toreuma and Mytilus edulis.In addition,the average Magelef species richness(D),Shannon-wiener diversity index(H′) and Pielou evenness index(J) were 1.066±0.105(±S.E.),1.560±0.085(±S.E.) and 0.714±0.010(±S.E.),respectively.