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As the authors, from the conservation group Trout Unlimited, the Forest Service, the University of Washington, Colorado State University and the United States Geological Survey write, “Our

It also describes how competitors, newly empowered by temperatures and stream flows that favor them, could muscle traditional species out of the way. They estimated not just what warmer rivers will mean for the life cycle of these western trout, but also how more winter rain or earlier snow melts - and the resulting higher flows - could affect eggs In a study published online Monday in the Proceedings of the National Academies of Science, Temperatures alone are not the only driver of what happens to, say, four varieties of trout.īut a group of scientists set out to do just that. As difficult as it is to predict precisely how the planet will warm over the next century or so, it is even harder to refine predictions of how those changes will affect specific species.