The future of fish passage science, engineering, and practice

Ana T. Silva, Martyn C. Lucas, Theodore Castro-Santos, Christos Katopodis, Lee J. Baumgartner, Jason D. Thiem, Kim Aarestrup, Paulo S. Pompeu, Gordon C. O'Brien, Douglas C. Braun, Nicholas J. Burnett, David Z. Zhu, Hans-Petter Fjeldstad, Torbjørn Forseth, Nallamuthu Rajaratnam, John G. Williams, Steven J. Cooke

    Research output: Contribution to journalArticlepeer-review

    243 Citations (Scopus)
    45 Downloads (Pure)

    Abstract

    Much effort has been devoted to developing, constructing and refining fish passage facilities to enable target species to pass barriers on fluvial systems, and yet, fishway science, engineering and practice remain imperfect. In this review, 17 experts from different fish passage research fields (i.e., biology, ecology, physiology, ecohydraulics, engineering) and from different continents (i.e., North and South America, Europe, Africa, Australia) identified knowledge gaps and provided a roadmap for research priorities and technical developments. Once dominated by an engineering-focused approach, fishway science today involves a wide range of disciplines from fish behaviour to socio-economics to complex modelling of passage prioritization options in river networks. River barrier impacts on fish migration and dispersal are currently better understood than historically, but basic ecological knowledge underpinning the need for effective fish passage in many regions of the world, including in biodiversity hotspots (e.g., equatorial Africa, South-East Asia), remains largely unknown. Designing efficient fishways, with minimal passage delay and post-passage impacts, requires adaptive management and continued innovation. While the use of fishways in river restoration demands a transition towards fish passage at the community scale, advances in selective fishways are also needed to manage invasive fish colonization. Because of the erroneous view in some literature and communities of practice that fish passage is largely a proven technology, improved international collaboration, information sharing, method standardization and multidisciplinary training are needed. Further development of regional expertise is needed in South America, Asia and Africa where hydropower dams are currently being planned and constructed.
    Original languageEnglish
    Pages (from-to)340-362
    Number of pages23
    JournalFish and Fisheries
    Volume19
    Issue number2
    Early online date27 Nov 2017
    DOIs
    Publication statusPublished - Mar 2018

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