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Projected current and future plant distributions in the Pacific Northwest

Published by Climate Adaptation Science Centers | Department of the Interior | Metadata Last Checked: July 18, 2025 | Last Modified: 2015-07-29
Projected current and future distributions of Abies amabilis (Pacific silver fir), Abies grandis (Grand fir), Abies procera (Noble fir), Acer macophylla (Big leaf maple), Larix lyallii (Subalpine larch), Larix occidentalis (Western larch), Pinus albicaulis (Whitebark pine), Quercus garryana (Garry oak), Taxus brevifolia (Pacific yew), Thuja plicata (Western red cedar) based on empirical bioclimatic models. Tree distributions models were built using 42 climate and bioclimatic variables from Climate Western North America climate dataset (www.climatevulnerability.org). I used random forest to project USGS range maps (http://esp.cr.usgs.gov/data/little/) for historical (1961-1990) and five general circulation models (GCMs) for the SRES A2 emissions scenario. GCMs included: BCCR BCM2.0 (2070-2099), CCCMA CGCM3 (2070-2099), CSIRO MK 3.0 (2070-2099), INMCM 3.0 (2070-2099), and MIROC3.2 MEDRES (2070-2099).

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