贵州羊昌河夏季PFU岩溶水生原生动物群落生态研究

Ecology of PFU Protozoa Communities from Yangchang Karst River in Summer,Guizhou

采用PFU法,于2004年夏季采集贵州羊昌河岩溶水生原生动物群落。生物样和水样进行室内岩溶水生原生动物培养、分离和鉴定,研究羊昌河岩溶水生原生动物群落的组成、功能营养类群及其生态类群特征。结果得出,羊昌河岩溶水生原生动物群落物种组成含17目33属36种;该岩溶水生原生动物群落含5个功能营养群,其中,光合营养群含有3个种,占总数的8.33%,细菌碎屑取食者群含有19个种,占总数的52.78%,食藻者类群含有11个种,占总数的30.56%,非选择性杂食者群含有1个种,占总数的2.78%,食肉者群含有2个种,占总数的5.56%;该岩溶水生原生动物群落的Maglaef多样性指数和异养性指数,分别是3.52和103。

By the method of PFU, 48 samples and specimens of aquatic protozoa communities were collected from Yanchang karst rivers in Guizhou in summer, 2004. The results show.1）The aquatic protozoa communities consists of thirty-six taxa in thirty-three genera and seventeen orders; （2） Maglaef Diversity Index （MDI） and Hetero-trophic Index （HI） of aquatic protozoa communities are analysed in this paper; （3）The groups of ecological function include Photosynthetic autotrophs （P groups, 8.33%）, Bactivores detritivores （B groups, 52.78%）, Algivores （A groups, 30.56%）, Nonselective omnivores （N groups, 1.78%） and Raptors （R groups, 5.56 %）.