Environmental triggers of a Microcystis (Cyanophyceae) bloom in an artificial lagoon of Hangzhou Bay, China

Chunyu Tang; Bin Sun; Kefeng Yu; Jinting Shi; Mengmeng Liu; Ting Jiang; Yuanzi Huo; Peimin He

doi:10.1016/j.marpolbul.2018.08.005

Environmental triggers of a Microcystis (Cyanophyceae) bloom in an artificial lagoon of Hangzhou Bay, China

Mar Pollut Bull. 2018 Oct:135:776-782. doi: 10.1016/j.marpolbul.2018.08.005. Epub 2018 Aug 7.

Authors

Chunyu Tang¹, Bin Sun², Kefeng Yu¹, Jinting Shi¹, Mengmeng Liu¹, Ting Jiang¹, Yuanzi Huo³, Peimin He⁴

Affiliations

¹ College of Marin Ecology and Environment, Shanghai Ocean University, Shanghai 201306, PR China; Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China; Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, PR China.
² College of Marin Ecology and Environment, Shanghai Ocean University, Shanghai 201306, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, PR China; Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China; Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, PR China.
³ College of Marin Ecology and Environment, Shanghai Ocean University, Shanghai 201306, PR China; Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China; Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, PR China. Electronic address: yzhuo@shou.edu.cn.
⁴ College of Marin Ecology and Environment, Shanghai Ocean University, Shanghai 201306, PR China; Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China; Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, PR China. Electronic address: pmhe@shou.edu.cn.

PMID: 30301097
DOI: 10.1016/j.marpolbul.2018.08.005

Abstract

The relationship between Microcystis abundance and environmental variables was studied during a Microcystis bloom in the summer months of 2016 in an artificial lagoon of Hangzhou Bay, China. It was determined that Microcystis abundance increased from 0.16 × 10⁴ cell/L to 5.8 × 10⁷ cell/L within 17 days from 28 July to 14 August, contributing to 96.84-99.56% of the total phytoplankton abundance. Then, Microcystis gradually disappeared 57 days afterwards. The results showed that the growth of Microcystis, including the stage of recovery, outbreak, subsidence and disappearance, was significantly correlated with water temperature, salinity, soluble reactive phosphorus (PO₄-P), dissolved inorganic nutrients (DIN), silicate (SiO₄-Si), the ratio of DIN/SiO₄-Si and zooplankton abundance, and the key environmental triggers which promoted the outbreak of Microcystis were water temperature, PO₄-P concentration and zooplankton abundance in this artificial lagoon.

Keywords: Cyanobacterial blooms; Estuary; Eutrophication; Harmful algae blooms; Lagoon; Microcystis.

MeSH terms

Bays
China
Eutrophication*
Microcystis / growth & development*
Phosphorus / analysis
Phytoplankton / growth & development
Salinity
Seasons
Temperature

Substances

Phosphorus