Mixotrophic Ochromonas Addition Improves the Harmful Microcystis-Dominated Phytoplankton Community in In Situ Microcosms

	Mixotrophic Ochromonas Addition Improves the Harmful Microcystis-Dominated Phytoplankton Community in In Situ Microcosms
	Zhang, Lu; Wang, Zeshuang; Wang, Na; Gu, Lei; Sun, Yunfei; Huang, Yuan; Chen, Yafen; Yang, Zhou
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2020
卷号	54 期号:7 页码:4609-4620
英文摘要	Driven by global warming and eutrophication, outbreaks of cyanobacterial blooms have severely impacted ecosystem stability and water safety. Of the organisms used to control cyanobacteria, protozoa can highly resist cyanotoxins, efficiently control cyanobacterial populations, and show considerably different feeding strategies from those of metazoans. Thus, protozoa have great potential to control harmful cyanobacteria and improve phytoplankton composition in eutrophic waters. To evaluate the actual effects of protozoa in controlling cyanobacteria and improving the phytoplankton community structure in the field, an in situ microcosm study was performed using a flagellate Ochromonas gloeopara that ingests Microcystis. Results showed that adding Ochromonas reduced the cyanobacterial populations and increased the chlorophyte and diatom proportions. Furthermore, the species richness and diversity of the phytoplankton community were enhanced in microcosms with Ochromonas. Additionally, there was a gradual increase in the chlorophyte population in the unicellular Microcystis control, while Ochromonas addition significantly accelerated the replacement of dominant species. This study was the first to show the practical effects of protozoa on controlling cyanobacteria in the field, highlighting that a reduction in in situ cyanobacteria via protozoa can improve the phytoplankton community structure, dredge the toxic cyanobacteria-dominated microbial food web, and mitigate harmful cyanobacteria risks in fresh waters.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20087]
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	Zhang, Lu,Wang, Zeshuang,Wang, Na,et al. Mixotrophic Ochromonas Addition Improves the Harmful Microcystis-Dominated Phytoplankton Community in In Situ Microcosms[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(7):4609-4620.
APA	Zhang, Lu.,Wang, Zeshuang.,Wang, Na.,Gu, Lei.,Sun, Yunfei.,...&Yang, Zhou.(2020).Mixotrophic Ochromonas Addition Improves the Harmful Microcystis-Dominated Phytoplankton Community in In Situ Microcosms.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(7),4609-4620.
MLA	Zhang, Lu,et al."Mixotrophic Ochromonas Addition Improves the Harmful Microcystis-Dominated Phytoplankton Community in In Situ Microcosms".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.7(2020):4609-4620.