Silver Creek in Idaho
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Exotic snails dominate nitrogen and carbon cycling in a highly productive stream by R.O. Hall, J. L. Tank and M. F. Dybdahl
Individual animals species can impact ecosystem processes, but few exotic invaders have demonstrated ecosystem-scale impacts, even when population sizes are large. The authors combined whole-stream measures of carbon and nitrogen fluxes with rates of consumption and ammonium excretion to show that an exotic freshwater snail, Potamopyrgus antipodarum, dominated these fluxes in a highly productive stream.