Table 4. Coefficient of variation (CV) of sap flux for each treatment plot in each study year.
CV’s were calculated as the standard deviation of sap flux for all the trees in a treatment plot divided by the average for that plot.
| Year | Stand | Treatment | CV (%) |
|---|---|---|---|
| 2013 | Bartlett Mature (C8) | Control | 136 |
| Calcium | 58 | ||
| Hubbard Brook Mature | Control | 36 | |
| Calcium | 32 | ||
| Jeffers Brook Mature | Control | 34 | |
| Calcium | 32 | ||
| 2014 | Bartlett Mature (C8) | Control | 36 |
| Calcium | 34 | ||
| Hubbard Brook Mature | Control | 40 | |
| Calcium | 45 | ||
| Jeffers Brook Mature | Control | 16 | |
| Calcium | 35 | ||
| 2015 | Bartlett Successional (C6) | Control | 14 |
| Nitrogen | 47 | ||
| Phosphorus | 30 | ||
| Nitrogen + Phosphorus | 14 | ||
| Calcium | 9 | ||
| 2017 | Bartlett Mature (C8) | Control | 31 |
| Nitrogen | 29 | ||
| Phosphorus | 21 | ||
| Nitrogen + Phosphorus | 67 | ||
| Calcium | 44 | ||
| 2018 | Hubbard Brook Successional | Control | 30 |
| Nitrogen | 36 | ||
| Phosphorus | 47 | ||
| Nitrogen + Phosphorus | 37 | ||
| Calcium | 31 |