Table 2.
Summer statistics on the tannin concentrations and polyphenol oxidase activity of Norway and ash-leaved maples.
| Sampling Site | Polyphenol oxidase activity, unit of activity |
Condensed tannin concentration, mg per g−1 of dry weight |
||||
|---|---|---|---|---|---|---|
| June | July | August | June | July | August | |
| Norway maple | ||||||
| Control | 1.41 ± 0.06 1.28…1.53 |
3.59 ± 0.20 3.15…4.03 |
2.48 ± 0.08 2.30…2.66 |
4.46 ± 0.04 4.30…4.62 |
6.59 ± 0.11 6.11…7.07 |
8.10 ± 0.09 7.70…8.50 |
| Buffer Area | 1.50 ± 0.05 1.39…1.61 |
3.96 ± 0.26 3.39…4.53 |
4.24 ± 0.16 3.88…4.61 |
4.86 ± 0.04 4.66…5.06 |
5.84 ± 0.08 5.51…6.17 |
7.16 ± 0.09 6.79…7.53 |
| Avenue | 1.85 ± 0.16 1.50…2.20 |
4.49 ± 0.27 3.89…5.09 |
4.84 ± 0.27 4.69…4.99 |
4.18 ± 0.01 4.12…4.24 |
5.35 ± 0.03 5.20…5.50 |
7.34 ± 0.08 6.98…7.69 |
| Ash-leaved maple | ||||||
| Control | 1.22 ± 0.09 0.97…1.42 |
3.86 ± 0.12 3.57…4.12 |
3.41 ± 0.19 2.92…3.88 |
3.95 ± 0.07 3.78…4.13 |
5.24 ± 0.06 5.27…5.40 |
7.19 ± 0.03 7.11…7.27 |
| Buffer Area | 1.23 ± 0.08 0.96…1.44 |
4.27 ± 0.14 3.91…4.61 |
5.09 ± 0.12 4.77…5.37 |
3.84 ± 0.04 3.72…3.96 |
4.55 ± 0.07 4.37…4.73 |
6.82 ± 0.06 6.66…6.97 |
| Avenue | 1.65 ± 0.19 1.18…2.11 |
4.71 ± 0.17 4.27…5.14 |
5.28 ± 0.15 4.91…5.63 |
3.68 ± 0.08 3.48…3.87 |
5.02 ± 0.08 4.82…5.22 |
6.58 ± 0.07 6.39…6.76 |