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The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance

The algal succession in Microcystis blooms of varying biomass under continuous aeration was studied in a greenhouse. There were four treatments (control, Low, Medium, and High) with initial chlorophyll a (Chl-a) of 32.5, 346.8, 1413.7, and 14,250.0 μg L(−1), respectively. During the experiment, Cyan...

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Autores principales: Wang, Xiaodong, Liu, Xingguo, Qin, Boqiang, Tang, Xiangming, Che, Xuan, Ding, Yanqing, Gu, Zhaojun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9722661/
https://www.ncbi.nlm.nih.gov/pubmed/36470905
http://dx.doi.org/10.1038/s41598-022-25017-4
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author Wang, Xiaodong
Liu, Xingguo
Qin, Boqiang
Tang, Xiangming
Che, Xuan
Ding, Yanqing
Gu, Zhaojun
author_facet Wang, Xiaodong
Liu, Xingguo
Qin, Boqiang
Tang, Xiangming
Che, Xuan
Ding, Yanqing
Gu, Zhaojun
author_sort Wang, Xiaodong
collection PubMed
description The algal succession in Microcystis blooms of varying biomass under continuous aeration was studied in a greenhouse. There were four treatments (control, Low, Medium, and High) with initial chlorophyll a (Chl-a) of 32.5, 346.8, 1413.7, and 14,250.0 μg L(−1), respectively. During the experiment, Cyanophyta biomass was the lowest in the Medium treatment (P < 0.05), while its Chlorophyta biomass was the highest (P < 0.05). Both Chlorophyta and Bacillariophyta biomass were the lowest in the High treatment (P < 0.05). Bacillariophyta biomass, particularly the diatom Nitzschia palea was the highest in the Low treatment (P < 0.05), and Nitzschia palea cells were attached to the Microcystis colonies. Thus, the algal shift in Microcystis blooms under aeration disturbance depends on its initial biomass, and it shift to green algae or/and diatom dominance in the control, Low, Medium treatments. Diatom cells, particularly N. palea, grew in an attached form on Microcystis colonies in treatment Low, in which the colonies provided media for the adherence. The mechanism of the algal shift with different biomass must be related to the nutrient level, low light and aerobic conditions under aeration disturbance as well as the aeration itself, which destroyed the Microcystis colonies’ advantage of floating on the water.
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spelling pubmed-97226612022-12-07 The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance Wang, Xiaodong Liu, Xingguo Qin, Boqiang Tang, Xiangming Che, Xuan Ding, Yanqing Gu, Zhaojun Sci Rep Article The algal succession in Microcystis blooms of varying biomass under continuous aeration was studied in a greenhouse. There were four treatments (control, Low, Medium, and High) with initial chlorophyll a (Chl-a) of 32.5, 346.8, 1413.7, and 14,250.0 μg L(−1), respectively. During the experiment, Cyanophyta biomass was the lowest in the Medium treatment (P < 0.05), while its Chlorophyta biomass was the highest (P < 0.05). Both Chlorophyta and Bacillariophyta biomass were the lowest in the High treatment (P < 0.05). Bacillariophyta biomass, particularly the diatom Nitzschia palea was the highest in the Low treatment (P < 0.05), and Nitzschia palea cells were attached to the Microcystis colonies. Thus, the algal shift in Microcystis blooms under aeration disturbance depends on its initial biomass, and it shift to green algae or/and diatom dominance in the control, Low, Medium treatments. Diatom cells, particularly N. palea, grew in an attached form on Microcystis colonies in treatment Low, in which the colonies provided media for the adherence. The mechanism of the algal shift with different biomass must be related to the nutrient level, low light and aerobic conditions under aeration disturbance as well as the aeration itself, which destroyed the Microcystis colonies’ advantage of floating on the water. Nature Publishing Group UK 2022-12-05 /pmc/articles/PMC9722661/ /pubmed/36470905 http://dx.doi.org/10.1038/s41598-022-25017-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Wang, Xiaodong
Liu, Xingguo
Qin, Boqiang
Tang, Xiangming
Che, Xuan
Ding, Yanqing
Gu, Zhaojun
The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance
title The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance
title_full The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance
title_fullStr The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance
title_full_unstemmed The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance
title_short The biomass of bloom-forming colonial Microcystis affects its response to aeration disturbance
title_sort biomass of bloom-forming colonial microcystis affects its response to aeration disturbance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9722661/
https://www.ncbi.nlm.nih.gov/pubmed/36470905
http://dx.doi.org/10.1038/s41598-022-25017-4
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