Table 1.
Physical and chemical measurements made at sampling sites.
| Source | Sampling date | Biofilm typea | Temperature (°C) | pH | DIC (ppm C) | DOC (ppm C) | wt% Cb | wt% Nb |
|---|---|---|---|---|---|---|---|---|
| Dragon Spring | 3/13/2010 | Chemo | 58.0 | 3.13 | 5.9 | 0.91 | 1.08 | 0.13 |
| 3/13/2010 | Photo | 46.5 | 2.95 | 0.6 | 0.90 | 0.95 | 0.44 | |
| Nymph Creek | 3/14/2010 | Chemo | 56.8 | 2.99 | 10.5 | 0.60 | 11.71 | 2.85 |
| 3/14/2010 | Photo | 53.0 | 3.00 | 26.4 | 0.53 | 11.45 | 2.01 | |
| Bijah Spring | 3/14/2010 | Chemo | 72.5 | 7.52 | 57.8 | 0.78 | 0.19 | 0.02 |
| 3/14/2010 | Photo | 68.8 | 7.65 | 60.2 | 0.68 | 0.70 | 0.09 | |
| Perpetual Spouter | 8/18/2011 | Photo | 68.6 | 7.12 | 4.4 | NA | 2.91 | 0.46 |
| Dragon Spring | 8/18/2011 | Photo | 46.2 | 2.60 | 14.4 | NA | 7.67 | 1.36 |
DIC, dissolved inorganic carbon; ppm C, parts per million carbon; DOC, dissolved organic carbon; wt% C, weight percent organic carbon; wt% N, weight percent organic N; NA, not available.
aThe type of biofilm as classified as either chemotrophic (Chemo) or phototrophic (Photo).
bWeight percent organic carbon and organic nitrogen of bulk biofilms.