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A toolkit for optimizing fish passage barrier mitigation actions [Journal of Applied Ecology]

Keywords : barrier mitigation, dams, fish passage barriers, mixed integer linear programming, optimization, rapid barrier assessment, regression, river connectivity restoration, stream–road crossings

par Frédéric Magné - publié le

1. The presence of dams, stream–road crossings and other infrastructure often compromises the connectivity of rivers, leading to reduced fish abundance and diversity. The assessment and mitigation of river barriers is critical to the success of restoration efforts aimed at restoring river integrity.
2. In this study, we present a combined modelling approach involving statistical regression methods and mixed integer linear programming to maximize resident fish species richness within a catchment through targeted barrier mitigation. Compared to existing approaches, our proposed method provides enhanced biological realism while avoiding the use of complex and computationally intensive population/ecosystem models.(...)

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