sweet birch (Betula lenta)
Model Reliability: High
| GCM SCENARIO | % Area Occ | Ave IV | Sum IV | Future/Current IV |
|---|---|---|---|---|
| Actual | 7.6 | 6.1 | 13434 | N/A |
| RFimp | 9.9 | 4.3 | 12495 | 0.93 |
| CCSM45 | 12.8 | 3.4 | 12872 | 1.03 |
| CCSM85 | 13.7 | 2.9 | 11562 | 0.93 |
| GFDL45 | 13.8 | 2.9 | 11825 | 0.95 |
| GFDL85 | 13.5 | 2.6 | 10145 | 0.81 |
| HAD45 | 13.8 | 2.9 | 11566 | 0.93 |
| HAD85 | 13.5 | 2.6 | 10095 | 0.81 |
| GCM45 | 14.9 | 2.8 | 12089 | 0.97 |
| GCM85 | 14.5 | 2.5 | 10602 | 0.85 |
Regional Summary Tree Tables
Summaries for tree species are available for a variety of geographies, in both PDF and Excel format. These summaries are based on Version 4 of the Climate Change Tree Atlas
Interpretation Guide
Sweet birch is narrowly distributed (5.7% of area), dense, and with high IV across much of the Appalachians, and the models, like yellow birch, show a slight decrease but still classed as 'No change' in habitat under climate change. Classed with low adaptability because of susceptibilty to fire, insects, and disease, it ranks as poor in its capability to cope. SHIFT shows some migration to the north.
Family: Betulaceae
Guild: opportunistic, long-lived intermediate
Functional Lifeform: medium-size deciduous tree
| 3.2 | -1.28 |
| -0.32 |  |
MODFACs
What traits will impact sweet birch's ability to adapt to climate change, and in what way?:
Primary Positive Traits
Dispersal
Primary Negative Traits
Fire topkill Shade tolerance Insect pests Disease