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Warming favors subtropical lake cyanobacterial biomass increasing

文献类型：期刊论文

作者Yan, Dongna4; Xu, Hai3; Lan, Jianghu4,5; Yang, Ming2; Wang, Fushun2; Hou, Weiguo1; Zhou, Kangen4; An, Zhisheng4
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2020-07-15
卷号726页码:7
关键词DNA Cyanobacteria Temperature Precipitation Last millennium
ISSN号0048-9697
DOI10.1016/j.scitotenv.2020.138606
通讯作者Xu, Hai(xuhai@tju.edu.cn)
英文摘要Subtropical lakes are increasingly subject to cyanobacterial blooms resulting from climate change and anthropogenic activities, but the lack of long-term historical data limits understanding of how climate changes have affected cyanobacterial growth in deep subtropical lakes. Using high-resolution DNA data derived from a sediment core from a deep lake in southwestern China, together with analysis of other sedimentary hydroclimatic proxies, we investigated cyanobacterial biomass and microbial biodiversity in relation to climate changes during the last millennium. Our results show that both cyanobacterial abundance and microbial biodiversity were higher during warmer periods, including the Medieval Warm Period (930-1350 CE) and the Current Warm Period (1900 CE-present), but lower during cold periods, including the Little Ice Age (1400-1850 CE). The significant increases in cyanobacterial abundance and microbial biodiversity during warmer intervals are probably because warm climate not only favors cyanobacterial growth but also concentrates lake water nutrients through water budgets between evaporation and precipitation. Furthermore, because rising temperatures result in greater vertical stratification in deep lakes, cyanobacteria may have exploited these stratified conditions and accumulated in dense surface blooms. We anticipate that under anthropogenic warming conditions, cyanobacterial biomass may continue to increase in subtropical deep lakes. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词CLIMATE-CHANGE ; PRECIPITATION CHANGES ; SEDIMENTS ; CHINA ; EUTROPHICATION ; TEMPERATURE ; VARIABILITY ; DIVERSITY ; CHENGHAI ; PATTERNS
资助项目National Natural Science Foundation of China[41672169] ; National Natural Science Foundation of China[41991253] ; National Natural Science Foundation of China (NSFC)-Israel Science Foundation (ISF) research program[41761144070]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000537422200007
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC)-Israel Science Foundation (ISF) research program
源URL[http://ir.ieecas.cn/handle/361006/14880]  
专题地球环境研究所_现代环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Xu, Hai
作者单位1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
2.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
3.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Dongna,Xu, Hai,Lan, Jianghu,et al. Warming favors subtropical lake cyanobacterial biomass increasing[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,726:7.
APA Yan, Dongna.,Xu, Hai.,Lan, Jianghu.,Yang, Ming.,Wang, Fushun.,...&An, Zhisheng.(2020).Warming favors subtropical lake cyanobacterial biomass increasing.SCIENCE OF THE TOTAL ENVIRONMENT,726,7.
MLA Yan, Dongna,et al."Warming favors subtropical lake cyanobacterial biomass increasing".SCIENCE OF THE TOTAL ENVIRONMENT 726(2020):7.

入库方式： OAI收割

来源：地球环境研究所

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