Warming favors subtropical lake cyanobacterial biomass increasing | |
Yan, Dongna1; Xu, Hai2; Lan, Jianghu1,3; Yang, Ming4; Wang, Fushun4; Hou, Weiguo5; Zhou, Kangen1; An, Zhisheng1 | |
通讯作者 | Xu, Hai(xuhai@tju.edu.cn) |
2020-07-15 | |
发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
ISSN | 0048-9697 |
卷号 | 726页码:7 |
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. |
关键词 | DNA Cyanobacteria Temperature Precipitation Last millennium |
DOI | 10.1016/j.scitotenv.2020.138606 |
关键词[WOS] | CLIMATE-CHANGE ; PRECIPITATION CHANGES ; SEDIMENTS ; CHINA ; EUTROPHICATION ; TEMPERATURE ; VARIABILITY ; DIVERSITY ; CHENGHAI ; PATTERNS |
收录类别 | SCI ; SCI |
语种 | 英语 |
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 |
项目资助者 | National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC)-Israel Science Foundation (ISF) research program |
WOS类目 | Environmental Sciences |
WOS记录号 | WOS:000537422200007 |
出版者 | ELSEVIER |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/14881 |
专题 | 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.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China 5.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, 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. |
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