Temporal and spatial changes of phytoplankton communities and their relationship with environmental factors in Qiandao Lake

doi:10.12024/jsou.20240204435

Home > Archive>Volume 33, Issue 5, 2024 >1176-1186. DOI:10.12024/jsou.20240204435

Temporal and spatial changes of phytoplankton communities and their relationship with environmental factors in Qiandao Lake
DOI:
                        10.12024/jsou.20240204435
                    
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                        TONG LuTONG Lu
Centre for Research on Environmental Ecology and Fish Nutrition of the Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
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LIU DanLIU Dan
Centre for Research on Environmental Ecology and Fish Nutrition of the Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
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DUAN JiaoyangDUAN Jiaoyang
Centre for Research on Environmental Ecology and Fish Nutrition of the Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
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HU ZhongjunHU Zhongjun
Centre for Research on Environmental Ecology and Fish Nutrition of the Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
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PAN JiayongPAN Jiayong
Hangzhou Qiandao Lake Group Co. Ltd, Hangzhou 311700, Zhejiang, China
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LU XiaoliLU Xiaoli
Hangzhou Qiandao Lake Group Co. Ltd, Hangzhou 311700, Zhejiang, China
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CUI ShuaikangCUI Shuaikang
Hangzhou Qiandao Lake Group Co. Ltd, Hangzhou 311700, Zhejiang, China
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LIU QigenLIU Qigen
Centre for Research on Environmental Ecology and Fish Nutrition of the Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
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Clc Number:Q142;S932.7;X131.3
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Abstract:

The dynamic changes of phytoplankton community and its relationship with major environmental factors are important for understanding the changes of lake and reservoir water environment and carrying out water environmental quality assessment. In this study, a monthly survey of phytoplankton and water environmental factors in Qiandao Lake was conducted from 2021 to 2022, and the characteristics of phytoplankton community structure, spatial and temporal distribution pattern and main environmental driving factors were analyzed, in order to provide important basic data for understanding the latest water environment changes and ecosystem evolution in Qiandao Lake. The results showed that a total of 240 species belonging to 8 phyla were identified, with Chlorophyta (51.67%), Bacillariophyta (21.67%) and Cyanophyta (17.84%) as the main species, and Cyanophyta and Bacillariophyta as the main dominant species. The average annual biological density from 2021 to 2022 was (404.21±116.59)×10⁴ cells/L, and the average annual biomass was (0.84±0.22) mg/L, showing significant spatio-temporal differences in both biological density and biomass. Cyanophyta had the highest biological density and biomass of phytoplankton. Shannon diversity index showed significant seasonal differences, but no significant spatial differences, and there was no spatio-temporal difference in other indices. Spearman correlation analysis showed that phytoplankton density and biomass were significantly positively correlated with water temperature, ammonia nitrogen and permanganate index, and negatively correlated with transparency. RDA analysis showed that water temperature, ammonia nitrogen and nitrite were the main environmental factors affecting the distribution of phytoplankton dominant species in Qiandao Lake.

Key words:Qiandao Lake;phytoplankton;environmental factors;community structure;correlation analysis

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童璐,刘丹,段娇阳,胡忠军,盘家永,卢小利,崔帅康,刘其根.千岛湖浮游植物群落时空变化及其与环境因子的关系[J].上海海洋大学学报,2024,33(5):1176-1186.
TONG Lu, LIU Dan, DUAN Jiaoyang, HU Zhongjun, PAN Jiayong, LU Xiaoli, CUI Shuaikang, LIU Qigen. Temporal and spatial changes of phytoplankton communities and their relationship with environmental factors in Qiandao Lake[J]. Journal of Shanghai Ocean University,2024,33(5):1176-1186.

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Received:February 29,2024
Revised:May 14,2024
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Online: September 05,2024
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