[Impacts of large hydropower station on benthic algal communities].
To investigate the impacts of large hydropower station in Gufu River on benthic algae, monthly samplings were conducted from September 2004 to June 2007 at the site GF04 which was impacted by the hydropower station, with the site GL03 in Gaolan River as reference. During sampling period, no significant differences were observed in the main physicochemical variables between GF04 and GL03, but the hydrodynamics differed significantly. GL03 was basically at a status of slow flow; while GF04, owing to the discharging from the reservoir, was at a riffle status during more than 60% of the sampling period. Such a difference in hydrodynamics induced significant differences in the community similarity of benthic algae and the relative abundance of unattached diatoms, erect diatoms, and stalked diatoms between GF04 and GL03, which could better reflect the impacts of irregular draw-off by large hydropower station on river eco-system.
Jia
Xing-Huan
XH
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. jiaxh_2005@yahoo.com.cn
Jiang
Wan-Xiang
WX
Li
Feng-Qing
FQ
Tang
Tao
T
Duan
Shu-Gui
SG
Cai
Qing-Hua
QH
D002681:China; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D056890:Eukaryota / Q000145:classification / Q000254:growth & development*; D005618:Fresh Water / Q000032:analysis*; D011157:Population Dynamics; D011210:Power Plants; D045483:Rivers