EFFECTS OF HYDROLOGICAL CONNECTIVITY ON PLANKTON COMMUNITY STRUCTURE IN BAIDANG LAKE BASIN

ZHAO Shigao; DONG Weiping; WANG Qing; LIU Yeling; YANG Wei

doi:10.13205/j.hjgc.202301001

Volume 41 Issue 1

Jan. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(1): 1-9,111

WANG Chao, WANG Yuan, DOU Peng, WANG Zhenmei, MENG Qingyi, YANG Moyuan, TAO Haijun. SIMULATION OF WATER BLOOM CONTROL EFFECT OF LANDSCAPE SLOW-MOVING WATER BODIES BY VELOCITY UNDER ECOLOGICAL WATER REPLENISHMENT[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 195-203. doi: 10.13205/j.hjgc.202301024

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ZHAO Shigao, DONG Weiping, WANG Qing, LIU Yeling, YANG Wei. EFFECTS OF HYDROLOGICAL CONNECTIVITY ON PLANKTON COMMUNITY STRUCTURE IN BAIDANG LAKE BASIN[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 1-9,111. doi: 10.13205/j.hjgc.202301001

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EFFECTS OF HYDROLOGICAL CONNECTIVITY ON PLANKTON COMMUNITY STRUCTURE IN BAIDANG LAKE BASIN

doi: 10.13205/j.hjgc.202301001

1. School of Environment, Beijing Normal University, Beijing 100875, China;
2. Municipal and Environmental Engineering, Hebei Institute of Civil Engineering, Zhangjiakou 075024, China;
3. Research and Development Center for Watershed Environmental Eco-Engineering, Beijing Normal University, Zhuhai 519087, China

Received Date: 2022-06-13
Available Online: 2023-03-23

Abstract

Abstract

Three field investigations of water level, velocity, water quality, phytoplankton and zooplankton were carried out in Baidang Lake Basin, Anhui Province in November 2020, and March and June 2021. The key environmental factors affecting the plankton community structure in the Baidang Lake Basin were explored and evaluated for hydrological connectivity. The results showed that the river-lake connectivity of the Baidang Lake Basin was highest in the wet season (June), followed by the normal season (March), and then dry season (November). The dominant species, abundance and biomass of phytoplankton and zooplankton communities showed significant seasonal differences, in which the dominant species of phytoplankton were green algae, diatoms and cyanobacteria, and the dominant species of zooplankton were rotifers and cladocerans. There was a trend of wet season>normal season>dry season in biomass and abundance. The Shannon Wiener and Margalef index of phytoplankton were lowest in the lake area, and highest in the upper reaches of the Yangshi River; while the lowest value of Pielou index was in the lake area, and the highest value was at the entrance of the Luochang River. For the zooplankton, the lowest values of Shannon Wiener index and Margalef index were in the middle reaches of the Luochang River, and the highest value was in the upper reaches of the Luochang River; while Pielou index was the lowest at the entrance of the Yangshi River and the highest at the upper reaches of the Luochang River. Redundancy analysis showed that the key environmental factors affecting the dominant species of phytoplankton were T, DO and TN, while that of the dominant species of zooplankton were TP and HCI. This study clarified the characteristics of the plankton community structure in the Baidang Lake Basin, and revealed the impact of hydrological connectivity on plankton community structure, which provided a scientific basis for further study of ecological health, and protection and restoration of the lake basin.
- hydrological connectivity,
- phytoplankton,
- zooplankton,
- RDA,
- Baidang Lake Basin

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