Strategies for conserving native salmonid populations at risk from nonnative fish invasions: tradeoffs in using barriers to upstream movement

By K. Fausch, B. Rieman, M. Young, J. B. Dunham. 2006

88 citations recorded by the source corpus.

Native salmonid populations in the inland West are often restricted to small isolated habitats at risk from invasion by nonnative salmonids. However, further isolating these populations using barriers to prevent invasions can increase their extinction risk. This monograph reviews the state of knowledge about this tradeoff between invasion and isolation. We present a conceptual framework to guide analysis, focusing on four main questions concerning conservation value, vulnerability to invasion, persistence given isolation, and priorities when conserving multiple populations. Two examples illustrate use of the framework, and a final section discusses opportunities for making strategic decisions when faced with the invasion-isolation tradeoff.

View Paper: https://www.semanticscholar.org/paper/094eaadfaea404455c2ca3cf199f7483d68b5095

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Citations in the corpus

A paradox of trout invasions in North America (2008, background): “In turn, this would aid fish conservation biologists in developing useful strategies for coping with invasions at the larger scales at which they must operate (Fausch et al. 2002, 2006).”
Biology, Status, and Management of the Yellowstone Cutthroat Trout (2011, background): “In cases where nonnative fishes occur in the water shed, physical isolation of the remaining Yellowstone cutthroat trout by barrier construction may be required (Fausch et al. 2006).”
Potential Consequences of Climate Change to Persistence of Cutthroat Trout Populations (2009, background): “Arguably, it is this migratory strategy that has allowed Bonneville cutthroat to persist in seasonally marginal habitats and to resist introgression and competition with nonnative competitors (e.g., Fausch et al. 2006).”
Climate change effects on stream and river temperatures across the northwest U.S. from 1980–2009 and implications for salmonid fishes (2012, background): “Such shifts will reduce habitats available to native trouts like cutthroat trout and bull trout that often persist in the colder waters upstream of encroaching non-native fishes (Peterson and Fausch 2003; Rieman et al. 2006; Fausch et al. 2006).”