气候变化领域集成服务门户(CCPortal): Sedimentary ancient DNA metabarcoding delineates the contrastingly temporal change of lake cyanobacterial communities

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DOI	10.1016/j.watres.2020.116077
	Sedimentary ancient DNA metabarcoding delineates the contrastingly temporal change of lake cyanobacterial communities
	Cao, Xiaofeng; Xu, Xiaoyan; Bian, Rui; Wang, Yajun; Yu, Hongwei; Xu, Yan; Duan, Gaoqi; Bi, Lijiao; Chen, Pengfei; Gao, Shaopeng; Wang, Jie; Peng, Jianfeng; Qu, Jiuhui
通讯作者	Peng, JF (通讯作者)
发表日期	2020
ISSN	0043-1354
卷号	183
英文摘要	Harmful cyanobacterial blooms consisting of toxic taxa can produce a wide variety of toxins to threaten water quality, ecosystem functions and services. Of greater concern was the changing patterns of cyanobacterial assemblage were not well understood due to the lack of long-term monitoring data over the temporal scale. Biodiversity change in cyanobacterial community and paleoenvironmental variables over the past 170 years in Lake Chenghai were investigated based on sedimentary ancient DNA metabarcoding and traditional paleolimnological analysis. The results showed species richness and homogenization of cyanobacterial assemblage increased in the most recent decades, which were synchronized with the growth of artificial fertilization and decline in precipitation. Cyanobacterial co-occurrence network analysis revealed more complex interactions and weak community stability after the change point of similar to 1987, while the rare cyanobacterial genera such as Anabaena, Planktothrix, Oscillatoria and Microcystis were identified to be keystone taxa affecting cyanobacterial assemblage. Furthermore, an increase of toxin-producing cyanobacterial taxa was significantly and positively associated with TN and TP, as well as TN/IP and TN/TP, which was verified by quantitative real-time PCR of mcyA and rpoC1 genes. Threshold in total nitrogen (TN) concentration should be targeted no more than 0.60 mg/L to alleviate nuisance cyanobacterial blooms in Lake Chenghai. These findings reinforce the comprehensive understanding for the long-term dynamics of cyanobacterial assemblage responding to environmental change, which could contribute to proactively regulate environmental conditions for avoiding undesirable ecological consequences. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	ANTHROPOGENIC IMPACTS GEOCHEMICAL EVIDENCE MULTIPLE STRESSORS ORGANIC-MATTER WATER CLIMATE EUTROPHICATION RECORD BIODIVERSITY BLOOMS
英文关键词	Sedimentary ancient DNA; Metabarcoding; Cyanobacterial community; Change point; Ecological threshold
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS记录号	WOS:000572151800011
来源期刊	WATER RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259983
推荐引用方式 GB/T 7714	Cao, Xiaofeng,Xu, Xiaoyan,Bian, Rui,et al. Sedimentary ancient DNA metabarcoding delineates the contrastingly temporal change of lake cyanobacterial communities[J]. 中国科学院青藏高原研究所,2020,183.
APA	Cao, Xiaofeng.,Xu, Xiaoyan.,Bian, Rui.,Wang, Yajun.,Yu, Hongwei.,...&Qu, Jiuhui.(2020).Sedimentary ancient DNA metabarcoding delineates the contrastingly temporal change of lake cyanobacterial communities.WATER RESEARCH,183.
MLA	Cao, Xiaofeng,et al."Sedimentary ancient DNA metabarcoding delineates the contrastingly temporal change of lake cyanobacterial communities".WATER RESEARCH 183(2020).