摘要
报道山东半岛东部海域主要以威海市北面和南面８个岛屿春、秋两季期间带底栖海藻群落组成、生物量、季节变化及主要环境因子。在两季度月得到海藻８８种，秋季比春季种数多，北面４岛种类略多于南面４岛，群落构成都以红藻类为主。各岛平均生物量秋季高于春季，北面４岛高于南面４岛。就各岛生物量而言，北断面高于南断面。
Studies were undertaken on the benthic algae community composition, biomass and seasonal variation in the intertidal zone of & islands round the Shandong Penin sula. based on the collections in Nov. 1990 and May 1991. 88 species of benthic algae were collected. which are identified as: 16 Chlorophyta, 23 phaeophyta and 49Rhodophyta. The community of benthic algae was dominated by Rhodophyta. We found that the species in autumn are more than those in spring, and the species in the northern 4 islands are slightly more than those in the southern 4 islands. The average biomass in autumn is larger than in spring, and the biomass in the north section of each island is larger than in the south section of each island. The dominant species are the Sargassum thunbergii, Corallina,sp. Scytosiphon lomentarius and Sargassum fusiforme. The economic species are the Gloiopeltis furcata, Pelvetia siliquosa. Sargassum fursiforme and Gracilaria asiatica. The similarity index numbers of genera (Sg. ) are very similar among the 8 islands east to the Shandong Peninsula, which are also close to those in the Jinshanzui area of Qinhuangdao, and to those of the Muguan island and Mati Reef area of Qingdao. These similarity index numbers of genera (Sg. ) range from 0. 55 to 0. 71, which leads to the conclusion that the marine algae floras of the above-mentioned 3 areas all belong to the Yellow Sea Western Coast Flora.
