Responses of cyanobacteria to climate and human activities at Lake Chenghai over the past 100 years

doi:10.1016/j.ecolind.2019.03.019

	Responses of cyanobacteria to climate and human activities at Lake Chenghai over the past 100 years
	Yan, Dongna 1,2,6; Xu, Hai 1; Yang, Ming 5; Lan, Jianghu 2; Hou, Weiguo 4; Wang, Fushun 5; Zhang, Jixiao 2,6; Zhou, Kangen 2,6; An, Zhisheng 2; Goldsmith, Yonaton 3
刊名	ECOLOGICAL INDICATORS
	2019-09-01
卷号	104 页码:755-763
关键词	DNA Cyanobacteria Phosphorus Lake sediments Lake Chenghai
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2019.03.019
通讯作者	Xu, Hai(xuhai@tju.edu.cn)
英文摘要	Cyanobacteria play important roles in carbon and nutrient cycling in aquatic systems. Cyanobacteria biomass in most lakes has increased over recent decades, threatening both water quality and ecosystem management. However, due to lack of long-term monitoring, the factors that control the interannual variability and diversity of cyanobacteria are poorly known. In this study, we used genetics and geochemical record of a vertical-down sediment core to investigate the impacts of climate changes and human activities on the long-term (100-year) abundance and diversity of cyanobacteria at Lake Chenghai, southwestern China. The results show that before 1980 CE, the nutrient level of Lake Chenghai was in a generally natural state, and human impacts were relatively weak; whereas after 1980 CE the cyanobacterial biomass inferred from both qPCR and Miseq sequencing have significantly increased compared with the average of the past 100 years, suggesting that major changes in both human activities and hydrological conditions might have occurred since then. The phosphorus (P) concentration and lake level changes are thought to have significant impacts on the cyanobacterial biomass in this lake. We contend that both human activities and the decrease in lake water level (which could lead to enrichment of nutrients in the water) could have resulted in an increase in cyanobacterial biomass and total phosphorus (TP) in lake sediments. The results of this study suggest that controls on nutrient inputs and lake levels are necessary to ensure the sustainability of Lake Chenghai, especially under a continuous global warming scenario.
资助项目	joint NSFC-ISF research program[41761144070] ; ISF[2487/17] ; National Natural Science Foundation of China[41672169]
WOS关键词	DNA ; EUTROPHICATION ; SEDIMENTS ; SHALLOW ; WATER ; PHYTOPLANKTON ; PHOSPHORUS ; DIVERSITY ; COMMUNITIES ; DOMINANCE
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470966000075
资助机构	joint NSFC-ISF research program ; ISF ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13855]
专题	地球环境研究所_现代环境研究室
通讯作者	Xu, Hai
作者单位	1.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel 4.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 5.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yan, Dongna,Xu, Hai,Yang, Ming,et al. Responses of cyanobacteria to climate and human activities at Lake Chenghai over the past 100 years[J]. ECOLOGICAL INDICATORS,2019,104:755-763.
APA	Yan, Dongna.,Xu, Hai.,Yang, Ming.,Lan, Jianghu.,Hou, Weiguo.,...&Goldsmith, Yonaton.(2019).Responses of cyanobacteria to climate and human activities at Lake Chenghai over the past 100 years.ECOLOGICAL INDICATORS,104,755-763.
MLA	Yan, Dongna,et al."Responses of cyanobacteria to climate and human activities at Lake Chenghai over the past 100 years".ECOLOGICAL INDICATORS 104(2019):755-763.