Research Article

Survival strategies of phytoplankton functional groups to environmental factors in a drinking water reservoir, central China

¹ Guiyang University, Guiyang 550005, PR China
² College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, PR China
³ State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
⁴ University of Chinese Academy of Sciences, Beijing 100049, PR China
⁵ China Water Environment Group Limited, Beijing 101101, PR China
⁶ Changsha Agricultural Comprehensive Administrative Law Enforcement Bureau, Changsha 410013, PR China

^* Corresponding authors: wangxiao8258@126.com; yushunchen@ihb.ac.cn

Received: 19 September 2020
Accepted: 1 September 2021

Abstract

In this study, use survival strategies of phytoplankton functional groups to environmental factors in a drinking water reservoir. Survival strategies of phytoplankton in drinking water reservoirs were rarely analysed. Dynamics and survival strategies of phytoplankton community in Zhushuqiao Reservoir (Changsha, China) were studied bimonthly from April 2016 to February 2017 to fill this gap. In spring, species of CRS-strategy that adapted to low water temperature, light, and nutrient dominated. There were small individuals of opportunistic colonists of C-strategy observed before stratification. With the increase of nutrient and water temperature in summer, slightly bigger, disturbance-tolerant species of R-strategy and species of CS-strategy that adapted to stratification dominated. In winter, some species adapted to low water temperature, which were R-strategists. Key factors driven seasonal phytoplankton succession were water temperature, total phosphorus, and dissolved inorganic nitrogen. Attention should be paid to potential threats from algal bloom species with C-strategy, and future longer-term monitoring of the system and its surrounding watersheds is greatly needed.