In the "Materials and Methods" section (p. 1188) and in Table 3 (p. 1193), the units for soil nitrogen (N) intensity are incorrectly listed as mg N kg -1 d -1 . The correct units, corresponding to the values reported in Table 3, are g N kg -1 d, which can be alternatively written as g N d kg -1 . These units were obtained by trapezoidal integration of soil N concentrations (in mg N kg -1 ) versus time (in days) followed by division by 1000 mg g -1 . Table 3 is reproduced below, with the corrected units.
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