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Argerich A, Johnson SL, Rhoades CC, Sebestyen SD, Knoepp JD, Greathouse E, Ice G, Campbell J, Jones JB, Likens G, et al. Trends in stream nitrate concentration and responses to disturbances in human-impacted basins across US. North American Benthological Society 28, Providence, RI. (Published abstract). 2011 .