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首页> 外文期刊>Advances in Experimental Medicine and Biology >Chapter 12: Watershed management strategies to prevent and control cyanobacterial harmful algal blooms
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Chapter 12: Watershed management strategies to prevent and control cyanobacterial harmful algal blooms

机译:第十二章:防止和控制蓝藻有害藻华的流域管理策略

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The tenets of watershed management - a focus on the land area linked to the water body, the incorporation of sound scientific information into the decision-making process and stakeholder involvement throughout the process - are well-suited for the management of cyanobacterial harmful algal blooms (C-HABs). The management of C-HABs can be viewed as having two main areas of focus. First, there is mitigation - control and/or removal of the bloom. This type of crisis response is an important component to managing active C-HABs and there are several techniques that have been successfully utilized, including the application of algicides, physical removal of surface scums and the mechanical mixing of the water column. While these methods are valuable because they address the immediate problem, they do not address the conditions that exist in the system that promote and maintain C-HABs. Thus, the second component of a successful C-HAB management strategy would include a focus on prevention. C-HABs require nutrients to fuel their growth and are often favored in longer-residence time systems with vertical stratification of the water column. Consequently, nutrients and hydrology are the two factors most commonly identified as the targets for prevention of C-HABs. Management strategies to control the sources, transformation and delivery of the primary growth-limiting nutrients have been applied with success in many areas. The most effective of these include controlling land use, maintaining the integrity of the landscape and applying best management practices.
机译:流域管理的宗旨-着眼于与水体相关的陆地区域,将合理的科学信息纳入决策过程以及在整个过程中利益相关者的参与-非常适合于蓝藻有害藻华的管理( C-HABs)。可以将C-HAB的管理视为两个主要领域。首先,有缓解措施-控制和/或移除大花。这种类型的危机响应是管理活性C-HAB的重要组成部分,已经成功利用了多种技术,包括使用杀藻剂,物理清除表面浮渣和机械混合水柱。尽管这些方法很有价值,因为它们可以解决紧迫的问题,但不能解决促进和维护C-HAB的系统中存在的条件。因此,成功的C-HAB管理策略的第二个组成部分将包括预防。 C-HABs需要养分来促进其生长,并经常在水柱垂直分层的较长停留时间系统中受到青睐。因此,养分和水文学是最常被确定为预防C-HABs的两个因素。控制生长的主要营养素的来源,转化和传递的管理策略已在许多领域得到成功应用。其中最有效的方法包括控制土地使用,维护景观的完整性和应用最佳管理实践。

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