Table 3.
Two molar KCl extractable ammonium and nitrate concentrations in soils from each landform class in the St. Denis National Wildlife Area collected June 1st–September 12th, 2006.
| Landform | Ammonium (μg N g−1 soil)† | Nitrate (μg N g−1 soil)† | ||||||
|---|---|---|---|---|---|---|---|---|
| Jun 01 | Jul 13 | Aug 16 | Sep 12 | Jun 01 | Jul 13 | Aug 16 | Sep 12 | |
| Convex (CX) | 1.5 (0.2) | 1.1 (0.2) | 0.9 (0.2) | 0.9 (0.2) | 2.1 (0.1) | 1.8 (0.3) | 2.1 (0.2) | 1.8 (0.2) |
| Concave(CV) | 3.3 (0.1) | 3.1 (0.2) | 2.7 (0.1) | 2.6 (0.2) | 2.0 (0.3) | 2.1 (0.2) | 1.7 (0.2) | 2.1 (0.1) |
| Cultivated depression (CD) | 3.0 (0.2) | 3.0 (0.2) | 2.6 (0.2) | 2.7 (0.3) | 4.2 (0.3) | 4.8 (0.4) | 4.1 (0.4) | 4.6 (0.1) |
| Riparian grass (RG) | 5.1 (0.2) | 4.8 (0.1) | 4.4 (0.3) | 4.5 (0.5) | 4.7 (0.3) | 4.4 (0.1) | 4.2 (0.3) | 4.4 (0.1) |
| Riparian tree (RT) | 6.3 (0.3) | 5.5 (0.2) | 4.7 (0.4) | 4.0 (0.4) | 4.5 (0.2) | 5.0 (0.4) | 4.4 (0.2) | 4.6 (0.1) |
| Basin center (BC) | 3.6 (0.2) | 3.0 (0.3) | 3.0 (0.1) | 2.6 (0.7) | 4.6 (0.4) | 4.3 (0.4) | 4.8 (0.3) | 4.4 (0.2) |
†Results are means (n(3), with SE in parenthesis.