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Climate Change and Distribution Shifts in Marine Fishes.

By Web Admin on 7/10/2007 | Keyword(s): Climate change and fish

Perry, Allison L. et al. "Climate Change and Distribution Shifts in Marine Fishes." Science 308(5730): 1912 -1915 (24 June 2005). Science Express on 12 May 2005 at www.sciencemag.org Of the 36 species examined in the North Sea (including exploited and non-exploited species), two-thirds were found to be migrating to cooler waters. The "center" of species populations moved from nearly 50 kilometers (km) to more than 400 km north, while southern boundaries moved from over 100 km to more than 800 km north. Species that shifted their distributions the most were smaller and had faster life cycles than those species that did not shift. Because species are shifting at different rates and amounts, the authors expect their results to have implications for commercial fisheries; some of the northern waters to which fish are migrating are already among the most over-fished in the world.

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