http://cfs.nrcan.gc.ca/authors/read/22998 Publications by K. C. Weathers en-ca 2012-01-13 12:51:27 MST 2012-01-13 12:51:27 MST webmaster@nofc.cfs.nrcan.gc.ca http://cfs.nrcan.gc.ca/publications?id=33063 Most of eastern North America receives elevated levels of atmospheric deposition of sulfur (S) that result from anthropogenic S02 emissions from fossil fuel combustion. Atmospheric S deposi tion has acidified sensitive terrestrial and aquatic ecosystems in this region; however, deposition has been declining since the 1970s, resulting in some recovery in previously acidified aquatic ecosystems. Accurate watershed S mass balances help to evaluate the extent to which atmospheric S deposition is retained within ecosystems, and whether internal cycling sources and biogeochemical processes may be affecting the rate of recovery from decreasing S atmospheric loads. This study evaluated S mass balances for 15 sites with watersheds in southeastern Canada and northeastern US for the period 1985 to 2002. These 15 sites included nine in Canada (Turkey Lakes, ON; Harp Lake, ON; Plastic Lake, ON; Hermine, QC; Lake Laflamme, QC; Lake Clair, QC; Lake Tirasse, QC; Mersey, NS; Moosepit, NS) Fri, 13 Jan 2012 http://cfs.nrcan.gc.ca/publications?id=33063