贵州香纸沟岩溶藓类附生水生原生动物群落生态特征

岩溶藓类是一种独特的生态系统类型,维持了丰富的附生水生原生动物群落多样性。2006年11月26日至2007年1月26日, 对贵阳市香纸沟岩溶沉积环境中8种藓类附生水生原生动物群落进行了野外生态调查,采集样品和标本48份。经室内对附生水生原生动物培养、分离和鉴定, 揭示了该区岩溶藓类附生水生原生动物群落具有下述特征: ( 1)水生原生动物群落物种组成含24科26属36种。( 2)水生原生动物群落含6个功能营养群。其中,原生动物光合营养群( P群, Photosy nthetic auto tro phs) , 占总数的25% ; 细菌取食者群( B群, Bactivores detritivores) , 占总数的44. 44% ; 腐生营养类群( S群, Saprotrophs) ,占总数的2. 78% ;食藻者类群( A群, Algivores) ,占总数的11. 11% ; 非选择性杂食者群( N 群,Nonselective omnivores) , 占总数的11. 11% ;食肉者群( R群, Raptor s) ,占总数的5. 56%。( 3)根据岩溶水流、基质和藓类植物特征,划分该区附生水生原生动物生态群落为4个类型和8个亚类型。 

Eco-feature of epiphyte aquatic protozoan communityon karst moss in Xiangzhigou, Guizhou

Karst moss is a unique ecosystem,which provide good environment for abundant biodiversity of epiphyte aquatic protozoan community.Forty-eight samples and specimens of epiphyte aquatic protozoan were collected from 8 aquatic mosses at active karst deposit sites in Xiangzhigou area of Guiyang from 26 November 2006 to 26 January 2007.It is found that(1) the aquatic protozoa communities consists of thirty-six taxa in twenty-six genera and twenty-four families;(2) the groups of ecological function include: Photosynthetic autotrophs(P groups,25%),Bactivores detritivores(B groups,44.44%),Saprotrophs(S groups,2.78%),Algivores(A groups,11.11%),Nonselective omnivores(N groups,11.11%) and Raptors(R groups,5.56%);(3) according to the characteristics of karst water,substrates and mosses,four ecological types and eight sub-types of aquatic protozoa communities can be distinguished.