Appendix J. Seasonal spiraling metrics for forested and open-canopied streams.
TABLE J1. Seasonal spiraling metrics for forested (n = 4) and open-canopied (n = 2) streams. Data are means* ± SE.
Seasons | Summer | Autumn | Winter | Spring |
Forested | ||||
Uptake length (SW, m) |
752 ± 675 | 16 ± 8 | 192 ± 96 | 513 ± 281 |
Uptake velocity (vf, mm/s) |
0.01 ± 0.01 | 0.09 ± 0.03 | 0.02 ± 0.01 | 0.01 ± 0.01 |
Uptake rate (U, µg N·m-2·s-1) |
0.13 ± 0.04 | 0.62 ± 0.22 | 0.08 ± 0.02 | 0.08 ± 0.02 |
Open | ||||
Uptake length (SW, m) |
1349 ± 1326 | 87 ± 70 | 1430 ± 1118 | not sampled |
Uptake velocity (vf, mm/s) |
0.03 ± 0.03 | 0.03 ± 0.03 | 0.01 ± 0.01 | not sampled |
Uptake rate (U, µg N·m-2·s-1) |
0.32 ± 0.02 | 0.22 ± 0.02 | 0.06 ± 0.02 | not sampled |
* Mean values within a row were not significantly different (P < 0.005) as determined by Tukey’s Multiple Comparison Test following one-way ANOVA (season = main effect). Statistical results from NCNM are based on n = 2/season.