广西山口红树林保护区大型底栖动物及其生态学的研究

A Study on the Benthic Macrofauna and Its Ecology in Shangkou Mangrove Reserve Area of Guangxi

关键词:  红树林  大型底栖动物  生态学

Key words:  mangroves  benthic macrofauna  ecology

摘要:

山口红树林区有111种大型底栖动物。49种贝类,44种甲壳类,11种鱼类和7种其它动物。群落平均鲜重生物量147.20g/m²。靠陆林区76.14g/m²,中部林区164.69g/m²,靠海林区200.76g/m²。54.5%生物量是贝类,23.07%是甲壳类。林区群落平均密度为301.33No./m²,靠陆林区220No./m²,中部林区282No./m²,靠海林区402No./m²。按生境划分,林区有8种附着动物,13种树栖动物,27种泥栖动物,92种土表动物,48种穴居动物。按食性划分,林区有25种食泥动物,53种食浮游生物动物,53种食植物动物,46种食肉动物,19种杂食动物。

Abstract:

There are 111 species of benthic macrofauna in Shankou mangrove reserve area, Guangxi,China.The community consists of 49 species of Mollusca,44 species of Crusracea,11 species of fishes and 7 other species.The mean fresh biomass of the community is 147. 20g/m²,being comprised of 76.14g/m² in landward forest region,164.69g/m² in middle forest region and 200.76g/m² in seaward forest region,respectively.54.5% of the biomass is occupied by Mollusea and 23.07% by Crustacea.The average density of benthic macrofauna of the community is 301.33No./m²,which consists of 220No./m² in landward forest region,282 No./m² in middle forest region and 402 No./m² in seaward forest region, respectively.According to living habitat,8 species are fouling animals,13 species arboreal animals,27 species infaunal animals,92 species epifaunat animals and 48 species cave animals.According to food preference,the benthic macrofauna can be divided into 25 species of soil-phagous animals,53 soecies of planktonphagous animals,53 species of phytophagous animals,46 species of carnivorous animals and 19 species of omnivorous animals.