Environmental factors associated with cyanobacterial assemblages in a mesotrophic subtropical plateau lake: A focus on bloom toxicity
文献类型：期刊论文
| 作者 | Hu, Lili3,4; Shan, Kun5 ; Huang, Licheng1; Li, Yuanrui6; Zhao, Lei2; Zhou, Qichao1,6; Song, Lirong4
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2021-07-10 |
| 卷号 | 777页码:13 |
| ISSN号 | 0048-9697 |
| 关键词 | Microcystin Microcystis Pseudanabaena Dolichospermum Erhai Lake |
| DOI | 10.1016/j.scitotenv.2021.146052 |
| 通讯作者 | Shan, Kun(shankun@cigit.ac.cn) ; Zhou, Qichao(qchzhou@ynu.edu.cn) |
| 英文摘要 | Harmful algal blooms caused by cyanobacteria have been increasing in frequency worldwide. However, the main environmental drivers of this change are often difficult to identify because of the effects of the interaction between eutrophication and climate change. Recently, filamentous N2-fixing cyanobacteria and non-diazotrophic Microcystis have been observed to be co-existing and undergoing succession in some eutrophic lakes. However, the succession patterns of dominant cyanobacteria and the factors driving this in mesotrophic lakes are not well understood. We hypothesized that the changes in cyanobacterial assemblages in mesotrophic lakes could result in a relatively high risks of toxic blooms, and that these changes are associated with the global climatic changes. We tested these hypotheses using data from the subtropical mesotrophic Lake Erhai. We found that the high spatiotemporal variability in the cyanobacterial community, and the increase in biomass were driven primarily by the growth of bloom-forming cyanobacterial taxa. Species-specific biomasses were related to a different environmental stressor; increases in dissolved organic carbon (DOC) concentrations were statistically associated with an increase of Microcystis biomass, whereas increases in surface water temperature favored higher biomass of Pseudanabaena at low transparency and high concentration of phosphorus. In addition, low nitrogen- to- phosphorus ratios were identified as potential determinants of the abundance of N2-fixing Dolichospermum. Furthermore, changes in the concentration of DOC, total nitrogen, pH and water transparency levels were found to affect the composition of Microcystis morphotypes and genotypes mostly. This study highlights that the toxic to nontoxic Microcystis ratio might increase with the water darkening and browning (which occurs in many subtropical plateau lakes). Lake management strategies, therefore, need to consider the toxicity of cyanobacterial assemblages in mesotrophic lakes over the intensity of the cyanobacterial blooms. (c) 2021 Elsevier B.V. All rights reserved. |
| 资助项目 | National Key Research and Development Program of China[2017YFA0605202] ; National Natural Science Foundation of China[41961019] ; National Natural Science Foundation of China[41601208] ; National Natural Science Foundation of China[51609229] ; Basic Research Projects of Yunnan Province[202001BB050067] ; Yunnan Key Laboratory of Pollution Process and Management of Plateau LakeWatershed[2017PL005] ; Hunan University of Arts and Science[19BSQD24] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000655616100016 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/13673]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Shan, Kun; Zhou, Qichao |
| 作者单位 | 1.Yunnan Res Acad Ecoenvironm Sci, Yunnan Key Lab Pollut Proc & Management Plateau L, Kunming 650034, Yunnan, Peoples R China 2.Yunnan Normal Univ, Sch Informat Sci & Technol, Kunming 650500, Yunnan, Peoples R China 3.Hunan Univ Arts & Sci, Coll Life & Environm Sci, Hunan Engn Res Ctr Aquat Organism Resources & Env, Changde 415000, Peoples R China 4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Big Data & Intelligent Comp, Chongqing 400714, Peoples R China 6.Yunnan Univ, Sch Ecol & Environm Sci, Inst Ecol Res & Pollut Control Plateau Lakes, Kunming 650500, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Lili,Shan, Kun,Huang, Licheng,et al. Environmental factors associated with cyanobacterial assemblages in a mesotrophic subtropical plateau lake: A focus on bloom toxicity[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,777:13. |
| APA | Hu, Lili.,Shan, Kun.,Huang, Licheng.,Li, Yuanrui.,Zhao, Lei.,...&Song, Lirong.(2021).Environmental factors associated with cyanobacterial assemblages in a mesotrophic subtropical plateau lake: A focus on bloom toxicity.SCIENCE OF THE TOTAL ENVIRONMENT,777,13. |
| MLA | Hu, Lili,et al."Environmental factors associated with cyanobacterial assemblages in a mesotrophic subtropical plateau lake: A focus on bloom toxicity".SCIENCE OF THE TOTAL ENVIRONMENT 777(2021):13. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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