Successional conditions of Dolichospermum and Microcystis in Taihu Lake,China
作者机构：College of Science and TechnologyHarbin Normal UniversityHarbin 150025China State Key Laboratory of Lake Science and EnvironmentNanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China
出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)
年 卷 期：2024年第42卷第6期
页 面：1777-1788页
核心收录：
基 金：Supported by the National Natural Science Foundation of China(No.42007159) the Network Security and Informatization Project of Chinese Academy of Sciences(No.CAS-WX2021SF-050402) the Water Science and Technology Project of Jiangsu Province(No.2020004) the Key Project of Nanjing Institute of Geography and Limnology Chinese Academy of Sciences(No.NIGLAS2022GS03)
主 题：shallow lake cyanobacteria bloom advantage genera meteorological condition nutrient
摘 要：Dolichospermum *** Microcystis *** two common cyanobacteria that form blooms in the Changjiang(Yangtze)River basin,but the environmental conditions for their succession in large lakes are still *** on daily monitoring data from Meiliang Bay in Taihu Lake from March to June,2016-2018,we studied the environmental conditions necessary for the succession of these two *** show that from March to June,the dominant genera of cyanobacteria experienced succession and co-dominated with *** succession process included three *** StageⅠ,the biomass of Dolichospermum and Microcystis was similar(March),but Dolichospermum was dominant for most of the *** StageⅡ,dominance alternated between Dolichospermum and Microcystis(April to mid-May).In StageⅢ,the biomass of Microcystis dominated(mid-May to June).In addition,temperature and nutrients across the three stages varied *** average temperature increased continuously from 10.9 to 18.4,and to 24.2℃.The total nitrogen content decreased from 2.87 to 2.40,and to 1.86 mg/*** total phosphorus content increased from 0.08 to 0.09,and to 0.12 mg/*** analysis revealed that Microcystis biomass was positively correlated with temperature and total *** biomass was positively correlated with total *** and regression tree displays that when the temperature was below 18.1℃,Dolichospermum dominated;above 18.1℃,Microcystis took *** analysis revealed that when temperature reached 18℃,the biomass of Microcystis increased exponentially,and the biomass of Dolichospermum exhibited a Gaussian distribution *** finding indicated that temperature was the key factor in the succession of Dolichospermum and Microcystis in nutrient-rich shallow *** nitrogen and phosphorus concentrations decrease,the dominant species of cyanobacteria will diversify its *** results of this study provide a foundation for risk p
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