For example, the discharge between 16 and 20 minutes is calculated as the mean of the discharge at l6 and 20 minutes multiplied by 4 minutes. Concentration is given in milligrams per liter for N contained in the sum of these forms. Concentration is given in milligrams per liter of total dissolved N in the sample. The concentration of total dissolved N was performed using the Traacs 800 Autoanalyzer, following a persulfate digestion of the sample, as detailed in Schlesinger et al. Con- centration is given in milligrams per liter for N contained in the sum of these forms.
Concentration is given in milligrams per liter of total dissolved N in the sample.
Rainfall simulations in the grassland were performed on six plots, each 1 x 2 m in dimension. The 1 x 1 m size was selected for these plots so that the shrub plots would not extend beyond the perimeter of the shrub canopy. A field-portable rainfall simulator, developed and described by Luk et al. All rainfall simulations were performed during the dry season, during June 1995 and 1996, on initially dry soils. Each simulation lasted 30 minutes, and the actual rainfall delivered to each plot was measured in an array of 6 wedge-shaped raingages located around the periphery of each plot.