Study on biodiversity of macrobenthic fauna in the rocky intertidal zone of Qingdao

Survey of macrobenthic fauna at the 2 sections in the rocky intertidal zones of Qingdao (the east of the second bathing beach section and the small Qingdao island section) was carried out monthly from August, 2004 to May, 2005. Seventy-four species of nine phyla were collected. The biomass of the two sections were 3498.80 and 3 512.00 gm-2 (wet weight), respectively, and the density of the two sections were 2 620.44 and 1 552 indm-2, respectively. Mytilus edulis dominated the biomass and density of the macrobenthic fauna on the two sections. The biomass and density of the mid intertidal zone were greater than those of the low zone. The average Shannon-Wiener indices and Pielou's evenness index of the two sections in this study were not high, but the indices of the small Qingdao island section were higher than those of the east of the second bathing beach section.