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| Community structure of zooplankton and its relationship with water environmental factors in Baiyangdian Lake |
| Received:April 01, 2020 |
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| KeyWord:zooplankton;community structure;niche index;water environmental factor;redundancy analysis;Baiyangdian Lake |
| Author Name | Affiliation | E-mail | | FU Xian-ting | State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China | | | YANG Wei | State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China | yangwei@bnu.edu.cn | | ZHAO Yan-wei | State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China | | | XU Fei | Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China | |
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| Abstract: |
| This study aims to understand the dynamic characteristics of zooplankton community and its relationship with water environmental factors in Baiyangdian Lake. Six surveys of zooplankton and water environmental factors were conducted from August 2009 to March 2010 and November 2018 to June 2019 in the lake. Based on the niche index and redundancy analysis(RDA), we analyzed the dynamic structure and niche differentiation among the dominant species of zooplankton and their relationship with water environmental factors. The results recognized a total of 56 species of zooplankton in 2009 and 43 species in 2019. Meanwhile, the individuals were reduced to 1.70×103 ind·L-1 in 2019 from 3.64×103 ind·L-1 in 2009, and their composition varied greatly. Polyarthra trigla, Brachionus angularis, and Keratella cochlearis were the dominant species in the two periods and their niche breadth increased by 7.79%, 9.76%, and 22.11%, respectively. The average niche overlap of the dominant species increased by 35.26% and the species pairs with Oik>0.6 increased by 30.08%. Results of RDA demonstrated that pH, total nitrogen, and dissolved oxygen were the significant factors directly affecting zooplankton community structures in Baiyangdian Lake. |
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