Open AccessCanonical correspondence analysis of relationship between characteristics of phytoplankton community and environmental factors in Wolong Lake
Author(s) -
Shaoping Ma,
X. Lv,
Shicong Geng,
Guofeng Wang,
Shuo Yang,
Yu Gao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/621/1/012107
Subject(s) - phytoplankton , chlorophyta , canonical correspondence analysis , species richness , diversity index , environmental science , community structure , ecology , biodiversity , sampling (signal processing) , water quality , oceanography , biology , algae , geology , nutrient , physics , detector , optics
For the purpose of exploring the evolution process of aquatic ecosystem in Wolong Lake, the phytoplankton community structure and water quality were surveyed at 20 sampling sites around the lake in April, August and October, 2019. The results showed that Chlorophyta, Cyanophyta and Bacillariophyta accounted for 39.7%, 26.5%, 20.6% of all the species, respectively. The species biodiversity indices (included Shannon-Wiener index, Margalef species richness index and Pielou index) increased first and then decreased from April to October, while the phytoplankton density decreased simultaneously. CCA revealed that pH, Turb, TP, T, NH 3 -N, COD Mn , TDS and TN were the main environmental factors affecting the community structure of phytoplankton in Wolong Lake, among which TP, T and pH had a greater impact on Chlorophyta , Cyanophyta and Bacillariophyta , respectively.