Investigation of phytoplankton community structure and formation mechanism: a case study of Lake Longhu in Jinjiang

Frontiers in Microbiology

Microbiology

Guanglong Liu¹  Yi Wang¹  Bin Zheng²  Yu Wen²  Yongcan Jiang³  Zekai Huang⁴ 

[1] College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China;PowerChina Huadong Engineering Corporation Ltd., Hangzhou, Zhejiang Province, China;PowerChina Huadong Engineering Corporation Ltd., Hangzhou, Zhejiang Province, China;College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China;

关键词: phytoplankton community;    structural characteristics;    spatial distance;    environmental factors;    formation mechanism;   

DOI  :  10.3389/fmicb.2023.1267299

 received in 2023-07-26, accepted in 2023-09-21,  发布年份 2023

来源: Frontiers

【 摘 要 】

In order to explore the species composition, spatial distribution and relationship between the phytoplankton community and environmental factors in Lake Longhu, the phytoplankton community structures and environmental factors were investigated in July 2020. Clustering analysis (CA) and analysis of similarities (ANOSIM) were used to identify differences in phytoplankton community composition. Generalized additive model (GAM) and variance partitioning analysis (VPA) were further analyzed the contribution of spatial distribution and environmental factors in phytoplankton community composition. The critical environmental factors influencing phytoplankton community were identified using redundancy analysis (RDA). The results showed that a total of 68 species of phytoplankton were found in 7 phyla in Lake Longhu. Phytoplankton density ranged from 4.43 × 105 to 2.89 × 106 ind./L, with the average density of 2.56 × 106 ind./L; the biomass ranged from 0.58–71.28 mg/L, with the average biomass of 29.38 mg/L. Chlorophyta, Bacillariophyta and Cyanophyta contributed more to the total density, while Chlorophyta and Cryptophyta contributed more to the total biomass. The CA and ANOSIM analysis indicated that there were obvious differences in the spatial distribution of phytoplankton communities. The GAM and VPA analysis demonstrated that the phytoplankton community had obvious distance attenuation effect, and environmental factors had spatial autocorrelation phenomenon, which significantly affected the phytoplankton community construction. There were significant distance attenuation effects and spatial autocorrelation of environmental factors that together drove the composition and distribution of phytoplankton community structure. In addition, pH, water temperature, nitrate nitrogen, nitrite nitrogen and chemical oxygen demand were the main environmental factors affecting the composition of phytoplankton species in Lake Longhu.

【 授权许可】

Unknown   
Copyright © 2023 Jiang, Wang, Huang, Zheng, Wen and Liu.