雷州半岛红树林海区底栖动物多样性的研究

Studies on the biodiversity of benthic macrofauna of mangrove area in the Leizhou Peninsula,China

2002年7～9月，对雷州半岛7个主要红树林区生物多样性进行了调查，采集到底栖动物共188种，其中软体动物有110种，节肢动物门48种，鱼类18种，星虫门3种，多毛类8种，腕足动物门1种。高潮区以甲壳类为优势种，中低潮区以软体动物为优势种类。总平均生物量和总平均栖息息密度分别为106．8g／m^2和320个／m^2；底栖动物的种类、生物量和栖息密度与底质和潮位线有密切的关系，与平均盐度呈正相关。并提出一批经济价值高和可开发利用的种类。

Between July and September 2002, areas of the Leizhou Peninsula. Totally 188 kinds of we made a survey on species diversity in 7 main mangrove benthos were digged out, among them 110 kinds belong to Mollusk, 48 kinds to Arthropods, 18 kinds to Fish, 3 kinds to Sipunculan, 8 kinds to Polychaete, and 1 kind to Brachiopoda. Crustaceans as the dominant species grows in the high tide area, while Mollusks as the dominant species grows in mid low tide area. The average biomass and density are in turn 106.8 g/m^2 and 320 ind. / m^2. Species, biomass and density of benthos are closely correlated to the sediment type and tide level, further more positivey correlated to the average salinity. Finally, some species with high economic value and exploitation foreground are discussed in the paper.