남해안 도장항(평일도)에서의 저서다모류군집의 시ㆍ공간적 변화

Temporal and spatial variation of benthic polychaetous community in Dojang harbor of Pyeongil is., southern coast of Korea

This study was carried to investigate the temporal variation of the benthic polychaetous community in Dojang Harbor of Pyeongil 1s., from August, 1999 to May, 2000. Polychaetes, the most dominant faunal group comprising 83.7% of the total number of benthic macrofauna, collected as a total of 62 species with a mean density of 2,448 ind./㎡. With the passage of time, the density increased toward the inner bay, and the species number increased toward the outer bay. The most abundant polychaete was Lumbrineris longifolia(58.2%), and followed by Tharyx sp.(10.8%), Praxillella affinis(6.2%), Terebellides horikoshii(3.6%) and so on. Comparing with the past studies investigated near Dojang Harbor, Glycera chirori, Ampharete arctica and Poecilochaetus johnsoni was importnat species. In the present study in the Dojang Harbor, L. longifolia and Tharyx sp. showed very high densities. The dominance of L. longifolia and Tharyx sp. as potential organic pollution indicator species in this study area mean the organic pollution of Dojang Harbor, due to the dicsharge of domestic sewage and waste ship oil.