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Phytoplankton functional groups and their spatial and temporal distribution characteristics in a temperate seasonally stratified reservoir. |
HUANG Ting-lin, ZENG Ming-zheng, QIU Xiao-peng, SHI Jian-chao, ZHOU Shi-lei, LIU Fei |
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China |
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Abstract To explore phytoplankton community structure and seasonal variations in a temperate seasonally stratified reservoir in North China, water samples were collected twice a month from different depths of Zhoucun Reservoir, Zaozhuang City, Shandong Province, from July 2014 to June 2015. The phytoplankton community was divided into functional groups following the method described by Reynolds and Padisák. Hydrological and water quality patterns were considered to reveal the driving forces for the selection of phytoplankton functional groups. The results suggested that a total of 112 species of phytoplankton, belonging to seven families and 63 genera, were detected and could be sorted into nineteen functional groups. Phytoplankton dynamics in Zhoucun reservoir exhibited remarkable seasonal variations:The S1functional group(Lyngbya sp. and Spirulina sp.) was dominant during thermal stratification in summer and autumn; while C+D functional groups(Cyclotella meneghiniana and Synedra sp.) were dominant during the mixing period(winter) under conditions of low temperature and light level. The distribution of phytoplankton functional group showed unobvious difference in vertical. Redundancy analysis(RDA) showed that thermal stratification, precipitation and water temperature had a major influence on phytoplankton succession in Zhoucun Reservoir.
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Received: 12 August 2015
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