水生态学杂志2026，Vol.47Issue(3)：214-225,12.DOI:10.15928/j.1674-3075.202404220152
高邮湖浮游植物优势种生态位及种间联结季节分析
Seasonal Analysis of Niche and Interspecific Connectivity of Dominant Phytoplankton Species in Gaoyou Lake
摘要
Abstract
Identification of dominant species is a good way to begin a study of the response of a biologi-cal community to their environment,and exploring differences in the ecological niches of dominant spe-cies and their interconnections is important for analyzing community change mechanisms.In this study,Gaoyou Lake in Jiangsu Province was selected for research,and we investigated the ecological niche and interspecies connectivity of dominant phytoplankton species in Gaoyou Lake across seasons.We aimed to reveal seasonal trends and adaptation mechanisms of the dominant phytoplankton categories and provide scientific and practical references for protecting water quality,controlling eutrophication,and restoring Gaoyou Lake.From April 2020 to December 2021,a field investigation of phytoplankton and water quality was carried out at 13 sampling sites in Gaoyou Lake.Ecological niche width and the niche overlap index were used to measure the distributions of dominant phytoplankton species in different seasons,and the variance ratio,chi-square,and other statistical methods were used to evaluate the interspecific associations of dominant phytoplankton species.A total of 14 dominant phytoplankton species were identified in the four monitoring seasons in Gaoyou Lake,with Cyclotella stelligera,Pseudanabaena lim-netica,Aphanizomenon flos-aquae,and Chroomonas acuta being primary.The ecological niche width of the dominant species ranged from 0.167 to 0.880,and seasonal differences were significant.The range of ecological niche overlap was 0.11-0.97,high in summer and low in winter.The results of the variance ra-tio showed significant positive associations among pairs of dominant species.Chi-square values showed that the ecosystem structure of Gaoyou Lake was relatively mature in spring and autumn,with ecological requirements varying among phytoplankton species.Competition for resources and space was not intense,and the community remained in a temporarily stable state.Interspecific associations among dominant phy-toplankton species in Gaoyou Lake were relatively weak,with relatively independent species distributions and a comparatively simple community structure.Overall,the phytoplankton community structure in Gaoyou Lake exhibited a pattern across seasons(spring to winter)of stable-unstable-stable-unstable.关键词
浮游植物/优势种/生态位/种间联结/高邮湖Key words
phytoplankton community/dominant species/niche/interspecific association/Gaoyou Lake分类
农业科技引用本文复制引用
马恩泽,胡晓东,徐季雄,黄睿,丰叶..高邮湖浮游植物优势种生态位及种间联结季节分析[J].水生态学杂志,2026,47(3):214-225,12.基金项目
江苏省水利科技项目(2022043) （2022043）
江苏省基础研究计划自然科学基金青年基金项目(BK20220705) （BK20220705）
江苏省水利科学研究院自主科研经费专项资金项目(2023z038) （2023z038）
江苏省水利科学研究院自主科研经费专项资金项目(2025z074). （2025z074）
