%0 Journal Article
%T Comparative study on macroinvertebrate communities along a reservoir cascade in Xiangxi River Basin<br>
%A Meiling Shao
%A Xinqin Han
%A Zhicai Xie
%A Xinghuan Ji
%A Ruiqiu Liu
%A Qinghua Cai
%A <br>
%J 生态学报
%D 2007
%I 
%X Three cascade reservoirs (Gudongkou Reservoir 1 (GR1), Gudongkou Reservoir 2 (GR2), and Xiangxi Bay of Three-Gorge Reservoir in Xiangxi River Basin, China were selected to investigate macroinvertebrate ecology in a cascade reservoir system. Principal Components Analysis (PCA) implied that water quality was degrading along the reservoir cascade. Non-metric Multidimensional Scaling (NMS) showed that sampling stations located in the lacustrine zone of a reservoir are representatives in comparing macroinvertebrate assemblages along the reservoir cascade. Oligochaetes were numerically dominant in both GR1 and Xiangxi Bay, and chironomids were dominant in GR2. A similar pattern was also exhibited in taxon composition. Benthic assemblages of the 3 reservoirs were all dominated by pollution-tolerant taxa in spite of their differences in water quality. Canonical Correspondence Analysis (CCA) disclosed that turbidity influenced the benthic assemblages significantly. Total organic carbon (TOC)/Turbidity was applied to determine the influence of organic matter on turbidity. The ratio in GR2 was the lowest among the 3 reservoirs, which implicated that the influence of organic matter on turbidity was smaller in GR2 than in the other 2 reservoirs, suggesting that inorganic matter contributed substantially to the turbidity of GR2.
%K Xiangxi River Basin
%K cascade reservoirs
%K macroinvertebrate
%K ecology
%K turbidity<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=DE81FF42D7336A3ACCF787310D84DFBA&yid=A732AF04DDA03BB3&iid=59906B3B2830C2C5&sid=50C0CF333412FCB7&eid=FDE2B9809AF7EA4E&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=0