Study On The Biodiversity Of Macrobenthos In The Yellow Sea And The East China Sea

This paper presents the results of ecological study of the macrobenthic fauna in the Yellow Sea and the East China Sea. The materials for study were collected from 49 stations in the shelf area west of 1270E between 260 ~ 360N, in October-November 2000 and March-April 2001. A total of 543 species of macrobenthos were collected. The specie-number of Polychaeta is 147 species, Mollusca 182 species, Crustacea 144 species, and Echinodermata 70 species. The distribution of species of macrobenthos, their biomass and density , and biodiversity indices were described and discussed.Based upon the analysis of the data obtained during the survey, it can be concluded that: 1) The number of biomass of macrobenthos in the Yellow Sea and the East China Sea in autuma is higher than that in spring, while the number of density of macrobenthos in autumn is lower than that in spring; 2) The number of biomass of macrobenthos in the Yellow Sea is higher than that in the East China Sea; 3) The number of species in the Yellow Sea is lower than that in the East China Sea; 4) One of the characteristics of distribution of macrobenthos in the East China Sea is that the species richness increased from the coastal waters to the offshore deep waters, from the north to the south. 5) The species composition in the deeper part occupied by the cold water mass of the Yellow Sea is more stable than that in the coastal part of the Yellow Sea in the late 40~50 years...