Table 3 Douglas-fir potential distribution predicted shifts over the next 50 years in North America in relation to different representative concentration pathways (RCP)
Population cluster | Contemporary niche extent (km2) | Future niche gains (+) or losses (-) in relation to contemporary niche extent (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
RCP2.6 | RCP4.5 | RCP6.0 | RCP8.5 | ||||||
| Â | Â | 2050 | 2070 | 2050 | 2070 | 2050 | 2070 | 2050 | 2070 |
Rangewide | ~ 600k | 804k | 798k | 816k | 852k | 804k | 750k | 810k | 792k |
|  |  | (+ 34) | (+ 33) | (+ 36) | (+ 42) | (+ 34) | (+ 25) | (+ 35) | (+ 32) |
Coastal | ~ 80k | 114k | 104k | 134k | 143k | 143k | 136k | 142k | 168k |
|  |  | (+ 43) | (+ 30) | (+ 68) | (+ 79) | (+ 79) | (+ 70) | (+ 78) | (+ 110) |
Interior north | ~ 427k | 640k | 623k | 661k | 691k | 691k | 704k | 696k | 760k |
|  |  | (+ 50) | (+ 46) | (+ 55) | (+ 62) | (+ 62) | (+ 65) | (+ 63) | (+ 78) |
Interior south | ~ 93k | 53k | 55k | 48k | 40k | 54k | 35k | 32k | 20k |
| Â | Â | (-43) | (-41) | (-48) | (-57) | (-42) | (-62) | (-65) | (-78) |