湖泊科学2024，Vol.36Issue(5)：1479-1492,中插16-中插18,17.DOI:10.18307/2024.0534
武汉市汉阳水网中5个连通湖泊的轮虫群落结构与物种多样性
Community structure and species diversity of rotifers in five connected lakes in Hanyang water network,Wuhan
摘要
Abstract
Rotifers are closely related to the process of lake eutrophication and can rapidly respond to changes of water environment.In this study,we selected five small shallow lakes with different nutrient levels in Hanyang water network to explore the spatiotempo-ral changes of rotifer community structure and species diversity and its driving factors,in order to provide scientific basis for lake eco-logical restoration and biodiversity protection.Twenty-six sites were investigated in June(summer),September(autumn),December(winter)of 2021,and March(spring)of 2022,respectively.Most of the environmental and biological factors in the water network had significant spatiotemporal difference.In total,51 species of rotifers were collected and dominated by Anuraeopsis fissa,Filinia longiseta,Keratella cochlearis,Polyarthra trigla and Trichcoerca similis.The average annual density of the five lakes ranged from 109.65 to 995.92 ind./L,and the average annual Shannon-Wiener index and Margalef index ranged from 0.86 to 1.68 and 0.65 to 1.44,respectively.Non-metric multi-dimensional scale analysis revealed significant seasonal difference in rotifer community struc-tures,with relatively small spatial difference except for Lake Houguan.Multiple stepwise regression analysis showed that rotifer spe-cies number and Margalef index were mainly affected by protozoa density;rotifer density was mainly affected by phytoplankton densi-ty;Shannon-Wiener index was mainly affected by water temperature.Canonical correspondence analysis(CCA)showed that the spa-tiotemporal changes of rotifer community structure were related to water temperature,ammonia nitrogen(NH3-N),transparency(SD),total nitrogen(TN),phytoplankton density and cladocera density.Within a specific region,the segmented linear regression model demonstrated a positive correlation between the complete nutrient status index(TLI(∑))and the species,density,and diver-sity index of rotifers.When the TLI(∑)reached about 70,the species,density,and diversity index of rotifers showed a downward trend.关键词
轮虫/群落结构/多样性/富营养化/汉阳水网Key words
Rotifer/community/diversity/eutrophication/Hanyang water network引用本文复制引用
熊雪平,罗进勇,翟东东,刘红艳,陈元元,熊飞..武汉市汉阳水网中5个连通湖泊的轮虫群落结构与物种多样性[J].湖泊科学,2024,36(5):1479-1492,中插16-中插18,17.基金项目
江汉大学一流学科建设重大专项(2023XKZ025)、江汉大学科技创新专项项目(2021kjzx006)和湖北省高等学校优秀中青年科技创新团队计划项目(T2020034)联合资助. （2023XKZ025）
