Table 5.
Summary of the consistency of changes over time in cover of taxa from Table2. The changes in control plots (ambient) between years and in response to experimental warming (warmed) are shown. The table tabulates the number of taxa categorized as no change (.), changed nondirectionally (N), changed inconsistently (I), changed consistently (decrease C− or increase C+), and changed directionally over time (decrease D− or increase D+) grouped by site and growth form
| Ambient | Warmed | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| . | N | D− | D+ | . | I | C− | C+ | D− | D+ | |
| Site | ||||||||||
| Atqasuk Dry | 5 | 8 | 3 | 0 | 12 | 0 | 1 | 0 | 2 | 1 |
| Atqasuk Wet | 8 | 4 | 0 | 0 | 9 | 3 | 0 | 0 | 0 | 0 |
| Barrow Dry | 2 | 12 | 0 | 1 | 3 | 2 | 4 | 0 | 3 | 3 |
| Barrow Wet | 4 | 10 | 1 | 0 | 6 | 0 | 2 | 3 | 4 | 0 |
| Growth Form | ||||||||||
| Deciduous Shrub | 4 | 2 | 0 | 0 | 3 | 0 | 2 | 1 | 0 | 0 |
| Evergreen Shrub | 2 | 5 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 3 |
| Forb | 4 | 2 | 1 | 0 | 6 | 0 | 0 | 1 | 0 | 0 |
| Graminoid | 3 | 12 | 0 | 1 | 10 | 3 | 1 | 1 | 0 | 1 |
| Bryophyte | 2 | 10 | 0 | 0 | 5 | 2 | 3 | 0 | 2 | 0 |
| Lichen | 4 | 3 | 3 | 0 | 2 | 0 | 1 | 0 | 7 | 0 |
| Total | 19 | 34 | 4 | 1 | 30 | 5 | 7 | 3 | 9 | 4 |