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Seasonal variation of mixing depths and its influence on phytoplankton dynamics in Zeya Reservoir, southeast China
CHEN Xuec-hu, KONG Hai-nan
School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240 China
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Abstract  

In reservoirs or lakes, mixing depth affects growth and loss rates of phytoplankton. Based on data collected from Zeya Reservoir, China, we investigated the influence on phytoplankton dynamics using cluster analysis of the scaled mixing depth. According to the scaled mixing depth, a year could be divided into three different periods, including the thermally stratified period, the isothermally mixed period, and the transition period. Mixing depth had a significant correlation with phytoplankton biovolume. According to steady state assumption, a unimodal curve (mixing depth-phytoplankton biovolume) with a significant peak at the mixing depth of 2 m was observed, which is largely consistent with Diehl'prediction.

Key wordsmixing depth      phytoplankton dynamics      thermally stratified period      isothermally mixed period     
Received: 25 October 2008     
:  O948.8  
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CHEN Xuec-hu
KONG Hai-nan
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CHEN Xuec-hu,KONG Hai-nan. Seasonal variation of mixing depths and its influence on phytoplankton dynamics in Zeya Reservoir, southeast China[J]. , 2008, 27(5): 414-417.
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