岩溶溪流原生动物群落生态初步研究

岩溶山区溪流具有一种独特的生态系统类型,维持了丰富的原生动物群落多样性.2006年7-9月在长江重要支流乌江上游8条岩溶山区溪流中,采集原生动物群落标本及水样72份.经室内对水生原生动物培养、分离和鉴定,揭示了该区岩溶溪流原生动物群落具有下述特征:(1)原生动物群落物种组成含27科31属42种.(2)原生动物群落含6个功能营养群,其中,原生动物光合营养群(P群),占总数的4.76%;细菌取食者群(B群)占52.38%;腐生营养类群(S群)占4.76%;食藻者类群(A群)占21.43%;非选择性杂食者群(N群)占2.38%;食肉者群(R群)占7.14%.(3)根据岩溶基质特征,划分该区水生原生动物群落为灰华附生原生动物群落、白云岩附生原生动物群落、水生植物附生原生动物群落和浮游原生动物群落4种生态类型.

Primary Study on the Ecology of Protozoan Communities from Karst Streams

Streams in karst mountainous area are unique ecosystems,which provide some nice environments for rich biodiversity of aquatic communities of protozoan.A investigation was conducted at Xianzhigou area in Guizhou Province of China from July to September in 2006,and 72 water samples and specimens of aquatic protozoan were collected from 8 streams.After isolation,culture and identification of aquatic protozoan from karst streams in the laboratory,the results show as follows:(1) The aquatic protozoa communities ...