九龙江口红树林区底栖动物的生态

Studies on benthic ecology in mangrove in Jiulong River Estuary,Fujian

根据1987年2、5、8、11月的调查资料,研究了福建九龙江口红树林区底栖动物生态。结果表明,该区共有底栖动物172种,主要由多毛类、软体动物和甲壳动物组成,以近岸广盐性种类占优势。平均生物量和栖息密度分别为48.03g/m^2和311个/m^2,以甲壳动物占优势;数量的季节变化显著;中潮区数量较大。潮汐、盐度和沉积物是影响本区底栖动物分布的主要因素。

This paper studies the ecological characteristics of composition,distribution and seasonal variationof benthic fauna,based on the data obtained from mangrove regions in the Jiulong River Estuary inFeb.to Nov.,1987.In all,172 species indentified,the main components were polychaeta,crustacea and mollusca.The neritic euryhaline species were dominant.The average biomass(wet weight)and density were48.03g/m^2 and 311 ind./m^2 respectively.The biomass and density and sediment were the major fac-tors which influence the ecological characteristics of benthic fauna in this area.