A quantitative assessment of fish passage efficiency

By Michael Noonan, J. Grant, Christopher D. Jackson. 2012

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Disappearing giants: a review of threats to freshwater megafauna (2017, background): “Although various types of fish passages have been designed to improve connectivity along rivers, their efficiency often remains low, especially for species other than salmonids for which they were originally designed.(92) Many freshwater megafauna species undertake long-distance migrations between b”
Cyprinid swimming behaviour in response to turbulent flow (2012, background): “Fish passage efficiency for various fishway types built in a ariety of locations was found to be lower for non-salmonids for han for salmonids (Noonan et al., 2011).”
Extreme inefficiency of two conventional, technical fishways used by European river lamprey (Lampetra fluviatilis) (2013, background): “…that low gradient vertical slot or nature-like fishways are likely to be most efficient for river lamprey, as well as providing passage to a large variety of other riverine taxa (Calles and Greenberg, 2007; Noonan et al., 2011; Pratt et al., 2009; Rodríguez et al., 2006; Stuart and Berghuis, 2002).”
Unintended consequences and trade-offs of fish passage (2013, background): “Selectivity at the species level is widely recognized; proportions of individuals passed at fishways are generally higher for salmonid fishes than for non-salmonid fishes (Mallen-Cooper and Stuart 2007; Bunt et al. 2012; Noonan et al. 2011).”