Blue-green algae mitigation strategies for urban lakes

城市湖泊蓝绿藻缓解策略

基本信息

批准号：
566271-2021
负责人：
McBean, Edward
金额：
$ 4.08万
依托单位：
University of Guelph
依托单位国家：
加拿大
项目类别：
Alliance Grants
财政年份：
2021
资助国家：
加拿大
起止时间：
2021-01-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722876
关键词：
Blue green algae mitigation strategies

项目摘要

Cyanobacteria, commonly known as blue-green algae, are naturally occurring microscopic organisms that may release cyanotoxins into freshwater systems. These toxins pose a serious public health risk as exposure through skin contact, ingestion of lake water, or contaminated drinking water or food may cause symptoms impacting both animals (livestock and pets) and humans. These risks range from minor irritation to more serious illness and, in worst case scenarios, can be fatal.Cyanobacteria occur worldwide, in calm, nutrient-rich waters, allowing algal blooms. These blooms may occur at any time of year but are more common during summer and early fall, creating bad odors, water discoloration, accumulate as a scum on the surface of the water, and releasing toxins that may be harmful to humans and aquatic biota. The expectations are that blooms will increase in frequency and duration in urban lakes due to warming temperatures associated with climate change.With the increasing incidence of cyanotoxins, interest is focusing on understanding the pathways of factors which contribute to formation of cyanotoxins and ultimately, opportunities to manage urban lakes and hence insights to decrease the potential for algal blooms to occur (e.g. manage/decrease nutrient loads, consider physical and chemical activities to reduce the blooms, and develop scientific knowledge using modern techniques such as microbial source tracking, and create tools to assess their magnitude and potential). Currently, models to specifically predict harmful algal composition and toxicity are lacking and improved knowledge of the effectiveness of possible control measures are needed.This research will focus on a case study application to Fairy Lake, a 26 ha Provincially Significant Wetland in the Town of Halton, Ontario where the algal growths are substantial and a considerable history of data are available. Fairy Lake is ideal for this research, given the interested parties, the proximity allowing relatively easy access, and the expertise within the proposed research team.

蓝细菌，通常称为蓝绿色藻类，是天然存在的微观生物，可能会释放氰毒素到淡水系统中。这些毒素会带来严重的公共卫生风险，因为通过皮肤接触，摄入湖水或受污染的饮用水或食物的暴露可能会引起影响动物（牲畜和宠物）和人类的症状。这些风险范围从轻微刺激到更严重的疾病，在最坏的情况下，可能是致命的。环细菌发生在全球，在镇定，营养丰富的水域中，允许藻类开花。这些花朵可能在一年中的任何时候发生，但在夏季和初秋期间更为普遍，产生了不良气味，水变色，作为水面上的浮渣积聚，并释放可能对人类和水生生物植物有害的毒素。 The expectations are that blooms will increase in frequency and duration in urban lakes due to warming temperatures associated with climate change.With the increasing incidence of cyanotoxins, interest is focusing on understanding the pathways of factors which contribute to formation of cyanotoxins and ultimately, opportunities to manage urban lakes and hence insights to decrease the potential for algal blooms to occur (e.g. manage/decrease nutrient loads, consider physical and化学活动以减少花朵，并使用现代技术（例如微生物源跟踪）发展科学知识，并创建工具来评估其幅度和潜力）。当前，缺乏要特别预测有害的藻类组成和毒性的模型，并且需要提高对可能的控制措施的有效性的了解。这项研究将重点放在对安大略省霍尔顿镇26公顷的省份湿地的案例研究申请上，其中algal的增长是实质性的，并且可用的数据可用。鉴于有关方，允许相对容易获得的接近性以及拟议的研究团队中的专业知识，童话湖是这项研究的理想选择。