Abstract As part of the Environmental Impact Assessment and Habitats Regulations Assessment process, developers are required to assess the indirect effects of fish entrapment however, presently there is little guidance to support quantitative assessments of food resource losses to higher trophic levels. To address this gap, a detailed and quantitative tool termed Dietary Equivalence Analysis is presented in this paper. Dietary Equivalence Analysis combines bioenergetic modelling with dietary and demographic information to express entrapment predictions in terms of the number of marine predators, or the proportion of a population, that would be sustained by the biomass of fish prey had it not been entrapped. The application of this tool is demonstrated by way of a worked example and includes a sensitivity analysis using Monte Carlo simulation to determine the influence of input parameter uncertainty on dietary equivalence estimates. It is shown that the Dietary Equivalence Analysis framework can be used to develop project- and regional-specific quantitative assessments for a number of marine predators. This is considered to provide competent authorities with a new and more realistic perspective from which the magnitude of predicted fish entrapment effects can be viewed and assessed.

中文翻译：

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膳食等效评估：量化海洋捕食者在发电站冷却水系统中捕获鱼类造成的食物资源损失

摘要 作为环境影响评估和栖息地法规评估过程的一部分，开发人员需要评估鱼类诱捕的间接影响，然而，目前几乎没有指导支持对更高营养水平的食物资源损失进行定量评估。为了弥补这一差距，本文提出了一种详细的定量工具，称为膳食等效分析。饮食等效性分析将生物能量模型与饮食和人口统计信息相结合，以根据海洋捕食者的数量或人口比例来表达诱捕预测，如果鱼类猎物未被诱捕，则该生物量将维持捕食鱼类的生物量。该工具的应用通过一个工作示例进行演示，包括使用蒙特卡罗模拟的敏感性分析，以确定输入参数不确定性对膳食等效性估计的影响。结果表明，膳食等效分析框架可用于为许多海洋捕食者开发项目和区域特定的定量评估。这被认为为主管当局提供了一个新的和更现实的视角，从中可以查看和评估预测的鱼类诱捕影响的程度。