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

	Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system
	Jia, Junjie; Gao, Yang; Zhou, Feng; Shi, Kun; Johnes, Penny J.; Dungait, Jennifer A. J.; Ma, Mingzhen; Lu, Yao
刊名	JOURNAL OF HYDROLOGY
	2020
卷号	583
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.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20142]
专题	中国科学院南京地理与湖泊研究所
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.
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.
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).