The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
INVESTIGATION AND ANALYSIS ON PLANKTON AND FISH RESOURCES IN THE SOURCE AREA OF LHASA RIVER, TIBET, CHINA
Author(s): 
Pages: 407-413
Year: Issue:  2
Journal: Oceanologia et Limnologia Sinica

Keyword:  Lhasa Riveraquatic biological surveysspecies diversityunique and protective fish;
Abstract: Lhasa River is one of the major rivers in the central-southern Tibet. We conducted a survey in 11 sites in the upstream region, in which plankton, aquatic plants, and fish were sampled and statistically analyzed. In total, 76 species of phytoplankton were identified, of which 48 were from Bacillariophyta, taking 63.2% of the total number of species; 12 from Chlorophyta, 15.8%; and 6 from Cyanophyta, 7.9%; 4 from Chrysophyta, 5.3; 3 from Cryptophyta 3.9%; and 1 each from Xanthophyta and Euglenophyta, 1.3% each. Four zooplankton categories including 50 species were found, of which 24 were protozoa for taking 48% of the total species; 12 were Rotifers, 24%; 10 Cladocera members, 20%; and 4 Copepods, 8%. Only five fish species were found, all Cypriniformes: 3 endemic, and 2 alien species. Schizopygopsis younghusbandi Regan and Ptychobarbus dipogon(Regan) are the Brahmaputra endemic fish. The alien species were Abbottina and Misgurnus anguillicaudatus. Overall, the biodiversity in the Lhasa River headwater basin was slightly poor and primitive, as reflected especially by simple composition of fish species. To protect the natural environment, we must take effective countermeasures against two major challenges, i.e., alien species invasion and fish stock decrease due to overfishing
Related Articles
No related articles found