서해 무안만에 서식하는 대형저서동물의 하계 공간분포

The Summer Spatial Distribution of Macrobenthic Fauna in Muan Bay, Korea

The macrobenthic faunal community of Muan Bay comprised 34 species and showed the overall mean density of 125.49 inds.m². Ploychaetes were the most important component of the macrofaunal community in species richness and abundance. The dominant species in abundance were a polychaete(Scoloplos armiger(13.8%)) and a mussel(Ruditapes philippinarum(11.80%)). Cluster analysis showed that the benthic community could be classified into three station groups A, B and C. Group A, located from the Aphae Island to Bok-gil pier and has dominant species including bivalves(Ruditapes philippinarum and Musculista senhousia), polychaetes(Glycera chirori and Nephtys caeca). Group C, located at the Topmeori Beach to near Hyogi Island, has dominant species including one echinoderm(Protandyra bidentata), four polychaetes(Scoloplos armiger, Nephtys ciliata, Lepidonotus helotypus and Lumbrineris heteropoda). Group B, between Aphae Island and Hyogi Island, has dominant species including a bivalve Musculista senhousia predominated.