Journal of Dalian Ocean University  2024, Vol. 39 Issue (1): 101-113 DOI: 10.16535/j.cnki.dlhyxb.2023-175 |
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| Seasonal differences and functional group characteristics of plankton community structure in Cetian Reservoir in Shanxi Province |
| GENG Zhiyuan，ZHAO Lele，JIA Xin，HU Yafei，LIU Shaozhen，LIU Qing，SONG Jing*
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| College of Animal Science，Shanxi Agricultural University，Jinzhong 030801，China |
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Abstract In order to evaluate the seasonal differences and functional group characteristics of plankton community structure in Cetian Reservoir in Shanxi Province, in the Haihe River, and contribute to reservoir protection and utilization,the characteristics of functional groups of plankton including species composition, biomass, density, spatial and temporal distribution, and their relationships with water environmental factors were investigated and analyzed in samples collected in Cetian Reservoir on October 12, 2020 (autumn), and March 27 (winter), June 21 (spring), and September 2 (summer), 2021. The results showed that 122 species of phytoplankton in 63 genera, 8 phyla, were identified, biomass and density were ranged from 7.31 mg/L to 45.69 mg/L and from 6 500.21 ind./L to 15 183.93 ind./L, with 30 functional groups of phytoplankton, including representative functional groups N, J and W1. A total of 21 species of zooplankton in 13 genera including 4 groups were identified, with biomass ranging from 1.49 mg/L to 25.53 mg/L and density varying from 2 128.90 ind./L to 17 699.72 ind./L. The zooplankton was divided into 9 functional groups, with representative functional groups RF and LCF. The average values of comprehensive trophic status index (TLI) were shown to be 53.45, 40.19, 52.66 and 48.87 in different seasons, with Shannon-Wiener diversity index (H′) of 0.80-1.54 and Pielou evenness index (J) of 0.17-0.32 in phytoplankton and 0.24-1.00 and 0.08-0.32 in zooplankton. There was Margalef index (d) of 12.81-16.18 in phytoplankton and 2.08-2.87 in zooplankton. The Simpson dominance Index (D) was 0.40-0.77 in phytoplankton and 0.10-0.54 in zooplankton. Pearson correlation analysis, Mental correlation analysis and redundancy analysis (RDA) showed that temperature, and contents of dissolved oxygen, phosphorus, nitrogen and chlorophyll a were the most important factors affecting the plankton community structure in Cetian Reservoir. The significant seasonal differences in species composition, functional group structure, biomass and density of plankton were observed in Cetian Reservoir, indicating that the water quality of Cetian Reservoir was in a state of heavy pollution, and that filter-feeding fishes are suggested to be stocked increasingly for control plankton population.
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Published: 13 March 2024
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ZHAO Junhui, WANG Yang, WANG Yakun, WU Pengju, HUANG Na, CHEN Liping, LIU Qigen, HU Zhongjun. Phytoplankton community structure, functional groups and their relationship with environmental factors in Dongguan Ecological Park[J]. Journal of Dalian Ocean University, 2023, 38(6): 1020-1031. |
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