Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system

doi:10.1016/j.jhydrol.2020.124633

	Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system
	Jia, Junjie 1,3; Gao, Yang 1,2; Zhou, Feng 4; Shi, Kun 2; Johnes, Penny J.5; Dungait, Jennifer A. J.6; Ma, Mingzhen 1,2; Lu, Yao 1,2
刊名	JOURNAL OF HYDROLOGY
	2020-04-01
卷号	583 页码:13
关键词	Phytoplankton community Gross primary productivity Biodiversity Environmental factor Poyang Lake
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.124633
通讯作者	Gao, Yang(gaoyang@igsnrr.ac.cn)
英文摘要	The management of river-lake systems is hindered by limitations in the applicability of existing models that describe the relationship between environmental factors and phytoplankton community characteristics but rarely include common and indirect effects on algae dynamics. In this study, we assumed that the interaction of light, water, temperature, pH, and nutrients, including direct and indirect effects, are the potential factors affecting phytoplankton dynamics. We determined which of these are the main drivers of phytoplankton community structure and production in a river-lake system by using three different models based on the partial least squares structural equation modeling method. Our results indicated that the models achieved more than 60% of the overall explanatory power of various environmental factors on phytoplankton characteristics, including indirect and direct effects. In particular, light, pH, and nutrient content and ratios commonly control phytoplankton dynamic characteristics rather than a single nutrient, but light is the main driving force of phytoplankton community characteristics. Controlling the underwater light conditions, and nitrogen and phosphorus pollution load could effectively regulate algal blooms, increase productivity, promote ecological balance, and reduce water pollution. Our findings provide a scientific and theoretical basis for water resource management and pollution control.
资助项目	National Nature Science Foundation of China[41922003] ; National Nature Science Foundation of China[41871080] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
WOS关键词	DISSOLVED ORGANIC-CARBON ; POYANG LAKE ; ENVIRONMENTAL-FACTORS ; SPATIAL VARIATIONS ; NUTRIENT FLUXES ; WET DEPOSITION ; PLS-SEM ; DIVERSITY ; DYNAMICS ; CHINA
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000527388300047
资助机构	National Nature Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159884]
专题	中国科学院地理科学与资源研究所
通讯作者	Gao, Yang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing, Peoples R China 5.Univ Bristol, Sch Geog Sci, Univ Rd, Bristol BS8 1SS, Avon, England 6.Univ Exeter, CLES, Geog, Amory Bldg,Rennes Dr, Exeter EX4 4RJ, Devon, England
推荐引用方式 GB/T 7714	Jia, Junjie,Gao, Yang,Zhou, Feng,et al. Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system[J]. JOURNAL OF HYDROLOGY,2020,583:13.
APA	Jia, Junjie.,Gao, Yang.,Zhou, Feng.,Shi, Kun.,Johnes, Penny J..,...&Lu, Yao.(2020).Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system.JOURNAL OF HYDROLOGY,583,13.
MLA	Jia, Junjie,et al."Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system".JOURNAL OF HYDROLOGY 583(2020):13.