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Type: Journal article
Title: Green algal over cyanobacterial dominance promoted with nitrogen and phosphorus additions in a mesocosm study at Lake Taihu, China
Author: Ma, J.
Qin, B.
Paerl, H.
Brookes, J.
Wu, P.
Zhou, J.
Deng, J.
Guo, J.
Li, Z.
Citation: Environmental Science and Pollution Research, 2015; 22(7):5041-5049
Publisher: Springer
Issue Date: 2015
ISSN: 0944-1344
Statement of
Jianrong Ma, Boqiang Qin, Hans W. Paerl, Justin D. Brookes, Pan Wu, Jian Zhou, Jianming Deng, Jinsong Guo, Zhe Li
Abstract: Enrichment of waterways with nitrogen (N) and phosphorus (P) has accelerated eutrophication and promoted cyanobacterial blooms worldwide. An understanding of whether cyanobacteria maintain their dominance under accelerated eutrophication will help predict trends and provide rational control measures. A mesocosm experiment was conducted under natural light and temperature conditions in Lake Taihu, China. It revealed that only N added to lake water promoted growth of colonial and filamentous cyanobacteria (Microcystis, Pseudoanabaena and Planktothrix) and single-cell green algae (Cosmarium, Chlorella, and Scenedesmus). Adding P alone promoted neither cyanobacteria nor green algae significantly. N plus P additions promoted cyanobacteria and green algae growth greatly. The higher growth rates of green algae vs. cyanobacteria in N plus P additions resulted in the biomass of green algae exceeding that of cyanobacteria. This indicates that further enrichment with N plus P in eutrophic water will enhance green algae over cyanobacterial dominance. However, it does not mean that eutrophication problems will cease. On the contrary, the risk will increase due to increasing total phytoplankton biomass.
Keywords: Eutrophication; cyanobacteria; green algae; nitrogen; phosphorus; dominance
Rights: © Springer-Verlag Berlin Heidelberg 2014
DOI: 10.1007/s11356-014-3930-4
Appears in Collections:Aurora harvest 7
Ecology, Evolution and Landscape Science publications

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