福建红树林区底栖生物生态研究

分析了福建沿岸红树林区底栖生物的群落结构、区系特点及其与环境因子的关系。从８个断面共采集到２７８种底栖生物，其中藻类１１种，多毛类４７种，贝类７２种，甲壳类８８种，棘皮动物１１种，鱼类２７种，其他类２２种。其优势种和习见种多为广温广布种和亚热带暖水性种类。短尾类和贝类为优势类群。平均总生物量为３３．７４ｇ／ｍ＾２，平均栖息密度为１３６个／ｍ＾２。生物种类的丰度及群落的特产我样性与海水的平均盐度呈正

The ecology of benthos in Fujian mangrove swamps

The paper describes the community structure,the characters of fauna and the relationship between the distribution and inhabiting environments of the benthic fauna in the mangrove regions along the coast of Fujian during October,1984 and May,1985.Among the total 278 species,we found algae with 11 species,Polychaeta with 47 species,Mollusca 72 species,Crustacea 88 species,Echinodermata 11 species,fishes 27 species,and other animal groups 22 species.The dominant and common species are mainly the eurythermic and eurytopic species and also the subtropical warmwater species.Brachyura crabs and Mollusca are major animal groups.The averages of the biomass and the densities of the benthic fauna in all 8 sections are 33.74g/m 2 and 136ind/m 2 respectively.the species abundance and polymorphism in the community are positively corelated to the mean salinity of the sea water,but are negatively interretated to the development of mangrove.The density of the benthic animals are positively corelated to the development of the mangrove.