在佛罗里达州的Lake Guard Oxy中使用过氧化和浮动碳酸盐藻类的微囊繁殖控制
Taylor L Hancock1,2,3, Elizabeth K Dahedl2, Hidetoshi Urakawa2,3
1Department of Biology, Doane University, Crete, Nebraska, USA.
Applied and environmental microbiology
|December 2, 2025
概括
过氧化处理在短期内减少了有害的藻类繁殖,但在流动的水中,效果不是持久的. 固体配方对微囊的开花产生了更有针对性的影响.
科学领域:
- 环境科学 环境科学
- 水生生态学 水生生态学
- 微生物学 微生物学
背景情况:
- 有害藻类繁殖 (HABs) 威胁着生态系统和经济,需要有效的缓解措施.
- 过氧化是一种环保的藻类杀伤剂,由于实际原因,更喜欢固体配方.
- 有限的比较研究存在于液体与固体过氧化对HAB控制.
研究的目的:
- 为了评估液态过氧化和固体配方 (Lake Guard Oxy) 对微囊花的现场疗效.
- 为了比较这两种过氧化治疗的短期和长期有效性.
- 评估治疗对蓝藻细菌丰富度,甲和基因表达的影响.
主要方法:
- 在佛罗里达州的卡洛萨哈奇河 (Caloosahatchee River) 在微囊的开花期间,液态过氧化和Lake Guard Oxy的现场应用.
- 使用16S rRNA基因安普利康序列的蓝色细菌相对丰度的分析.
- 测量叶绿素a度和Microcystis殖民地密度.
- 转录组分析以评估基因表达,特别是固定的基因表达.
主要成果:
- 在短期内,这两种治疗都显著降低了蓝藻细菌的丰富性,叶绿素a和Microcystis殖民地.
- 与其他蓝藻细菌相比,Lake Guard Oxy表现出更有针对性的减少微囊.
- 由于流动的河流系统中的水交换,处理效应在几天内减弱.
- 固基因的升级在治疗后观察到,特别是在LGOxy应用后.
结论:
- 过氧化治疗提供了短期抑制已建立的Microcystis开花.
- 在活跃流动的系统中,由于水交换和短暂的持久性,有效性是有限的.
- 固体配方可能提供有针对性的益处,但持续控制需要多次应用.
- 需要进一步的研究,以优化对不同HAB和水生环境的过氧化应用策略.
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