Table 6 Student-Newman-Keuls' (SNK) Test Comparison of Chlorophyll a concentrations for Control, Nitrogen (N), Phosphorus (P), and Nitrogen plus Phosphorus (N + P) treatments using Passive Diffusion Periphytometer in the Bosque River Watershed during the period of October 10–24, 1998.
From: Measuring variability in trophic status in the Lake Waco/Bosque River Watershed
Site | Treatment | Number of Replicates | Mean Chl. a (μg cm-2) | Standard Deviation (μg cm-2) | SNK Group (α = 0.05) | |
|---|---|---|---|---|---|---|
NB-01 | Control | 7 | 0.80 | 0.34 | Â | B |
| Â | N | 7 | 0.78 | 0.30 | Â | B |
| Â | N+P | 6 | 0.73 | 0.20 | Â | B |
| Â | P | 7 | 0.73 | 0.23 | Â | B |
NB-02 | Control | 6 | 1.94 | 1.19 | A | B |
| Â | N | 7 | 1.50 | 0.75 | A | B |
| Â | N+P | 6 | 1.50 | 1.09 | A | B |
| Â | P | 7 | 1.54 | 0.85 | A | B |
NB-03 | Control | 7 | 0.61 | 0.18 | Â | B |
| Â | N | 7 | 2.13 | 1.12 | A | Â |
| Â | N+P | 7 | 1.56 | 1.55 | A | B |
| Â | P | 7 | 0.87 | 0.72 | Â | B |