湖泊科学2026，Vol.38Issue(5)：1860-1870,11.DOI:10.18307/2026.0512
微囊藻形态的种间差异及其对环境变化的响应
Inter-species differences in the morphology of Microcystis and their response to environ-mental changes
摘要
Abstract
Microcystis,the most frequently observed genus in cyanobacterial blooms,exhibits significant morphological diversity and pronounced spatiotemporal variation.However,the seasonal distribution patterns of its distinct morphological characteristics re-main unclear.This study systematically analyzed the morphological features,spatiotemporal distribution patterns,and coupling re-lationships with environmental factors(temperature,nutrients,etc.)of Microcystis in Lake Chaohu from 2022 to 2023.The results indicate that there are significant differences in colony size and cell diameter among Microcystis species.M.panniformis and M.aeruginosa have the largest colony sizes,which are significantly larger than those of M.flos-aquae and M.botrys.M.wesenbergii has the largest cell diameter,which is significantly larger than those of M.botrys,M.aeruginosa,and M.viridis,while M.flos-aquae and M.ichthyoblabe have the smallest diameters.This morphological differentiation was accompanied by differential respon-ses to nutrients(nitrogen and phosphorus)and temperature.Nitrogen and phosphorus were the key nutrients affecting the colony size and cell diameter of Microcystis,with significant differences in occurrence frequency of different species across total phosphorus and temperature ranges.During the cold season,M.viridis and M.pseudofilamentosa had higher frequencies.As water tempera-tures increased into the warm season,the community shifted toward higher frequencies of M.wesenbergii,M.novacekii,and M.aeruginosa.In the hot season,M.botrys and M.smithii became the most frequent species.Correlation analysis and regression models further revealed the regulatory effects of environmental factors on the cell diameter of Microcystis.Temperature and phos-phorus showed significant correlations with cell diameter in most species.This study aims to provide a scientific basis for under-standing the ecological adaptation mechanisms of Microcystis in Lake Chaohu and for the management of cyanobacteria in eutrophic lakes.关键词
巢湖/蓝藻水华/微囊藻/驱动因子Key words
Lake Chaohu/cyanobacterial blooms/Microcystis/driving factors引用本文复制引用
朱雨朦,罗雪娇,陆隽,朱睿,史小丽,阳振,乔云发,张民..微囊藻形态的种间差异及其对环境变化的响应[J].湖泊科学,2026,38(5):1860-1870,11.基金项目
国家重点研发计划项目(2024YFC3211700)、江苏省水利科技项目(2024004)和国家自然科学基金项目(32171546)联合资助. （2024YFC3211700）
