Abstract Barrier removal is a recognized solution for reversing river fragmentation, but restoring connectivity can have consequences for both desirable and undesirable species, resulting in a connectivity conundrum. Selectively passing desirable taxa while restricting the dispersal of undesirable taxa (selective connectivity) would solve many aspects of the connectivity conundrum. Selective connectivity is a technical challenge of sorting an assortment of things. Multiattribute sorting systems exist in other fields, although none have yet been devised for freely moving organisms within a river. We describe an approach to selective fish passage that integrates ecology and biology with engineering designs modeled after material recycling processes that mirror the stages of fish passage: approach, entry, passage, and fate. A key feature of this concept is the integration of multiple sorting processes each targeting a specific attribute. Leveraging concepts from other sectors to improve river ecosystem function may yield fast, reliable solutions to the connectivity conundrum.

中文翻译：

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单流回收激发了针对水生生态系统连通性难题的选择性鱼类通道解决方案

摘要 去除障碍是扭转河流破碎化的公认解决方案，但恢复连通性会对理想和不受欢迎的物种产生影响，从而导致连通性难题。选择性地通过所需的分类群，同时限制不需要的分类群的扩散（选择性连接）将解决连接难题的许多方面。选择性连接是对各种事物进行分类的技术挑战。其他领域也存在多属性分类系统，尽管尚未设计出用于河流中自由移动的生物体。我们描述了一种选择性鱼类通过的方法，该方法将生态学和生物学与以反映鱼类通过阶段的材料回收过程为模型的工程设计相结合：接近、进入、通过和命运。这个概念的一个关键特征是多个分类过程的集成，每个过程都针对一个特定的属性。利用其他部门的概念来改善河流生态系统功能可能会为连通性难题提供快速、可靠的解决方案。