The influence of changes in wind patterns on the areal extension of surface cyanobacterial blooms in a large shallow lake in China

The Science of the Total Environment
Tingfeng WuZhen Wang

Abstract

It has been hypothesized that climate change will induce the areal extension of cyanobacterial blooms. However, this hypothesis lacks field-based observation. In the present study both long-term historical data and short-term field measurement were used to identify the importance of changes in wind patterns on the cyanobacterial bloom in Lake Taihu (China), a large, shallow, eutrophic lake located in a subtropical zone. The cyanobacterial bloom mainly composed of Microcystis spp. recurred frequently throughout the year. The regression analysis of multi-year satellite image data extracted by the Floating Algae Index revealed that both the annual mean monthly maximum cyanobacterial bloom area (MMCBA) increased year by year from 2000 to 2011, while the contemporaneous cyanobacterial biomass showed no significant change. However, the correlation analysis shows that MMCBA was negatively correlated with wind speed. Our short-term field measurements indicated that the influence of wind on surface cyanobacterial blooms is that the Chlorophyll-a (Chla) concentration is fully mixing throughout the water column when the wind speed exceed 7 m s(-1). At lower wind speeds, there was vertical stratification of Chla with high surface concentra...Continue Reading

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Citations

Apr 25, 2016·Water Research·Hua WangJianjian Wang
May 7, 2016·The Science of the Total Environment·Changzhou YanZhuo Zhen
Feb 23, 2019·Environmental Science and Pollution Research International·Meng MuShun Bi
Sep 2, 2020·Biological Reviews of the Cambridge Philosophical Society·Jani HeinoDavid G Angeler
Nov 23, 2019·International Journal of Environmental Research and Public Health·Jiancai DengDavid P Hamilton
Mar 7, 2020·Global Change Biology·Jason D StockwellHarriet L Wilson
Jan 18, 2021·The Science of the Total Environment·Lei ZhangJicheng Zhong
Sep 13, 2017·The Science of the Total Environment·Katja DörnhöferNatascha Oppelt

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