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Soil Solution Dynamics In Response To Elevated Nitrogen And Sulfur Treatments At The Bear Brook Watershed In Maine, Johanna Szillery
Soil Solution Dynamics In Response To Elevated Nitrogen And Sulfur Treatments At The Bear Brook Watershed In Maine, Johanna Szillery
Electronic Theses and Dissertations
Base cation depletion in forest soils of northeastern North America is a continuing concern because of the ongoing elevated deposition of sulfur (S) and nitrogen (N), intensive-management practices, and the often poorly understood implications of land-use history on modem ecosystem function. At the Bear Brook Watershed in Maine (BBWM), one of two paired, forested watersheds has been subjected to experimental additions of S and N for over a decade. Treatments consist of 28.8 kg S ha-' yr-' and 25.2 kg N ha-' yr-' in the form of granular (NH&SO4 applied bimonthly by helicopter. Ceramic cup tension lysimeters were used to …