摘要
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.
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 Septem- ber 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 consist of forty-two species in thirty-one genera and twenty-seven families. （2） The groups of ecological function include photosynthetic autotrophs （P groups ,4.76% ） , bacterium detritivores （B groups ,52.38%） , saprovores （ S groups ,4.76% ） , algivores （A groups, 21.43%） , nonselective omnivores （ N groups ,2.38% ） and raptors （R groups ,7.14% ）. （3） According to the characteristics of karst water, substrates and mosses, four ecological types of aquatic protozoa communities can be distinguished.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第1期98-102,共5页
Journal of Sichuan Normal University（Natural Science）
基金
国家自然科学基金(30460014)
国家人事部留学人员择优基金(国人部发(2003)50号)资助项目
关键词
岩溶溪流
原生动物群落
物种多样性
生态类群
Karst streams
Protozoan communities
Species biodiversity
Ecological groups
