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Current suitable habitatEngelmann spruce habitat across the West
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By 2030Spruce density on the decline across the West
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By 2060Uinta Range among last bastions for habitat
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By 2090Engelmann habitat severely diminished
Engelmann spruce threatUsing a greenhouse gas emissions scenario that is proving conservative, the U.S. Forest Service's Rocky Mountain Research Station projects a shrinking footprint for spruce in Utah and the Rocky Mountains.
Colo.
6.6Mont.
6.2Calif.
5.5Idaho
5.2Wyo.
3.7Wash.
3.6Ore.
3.0Ariz.
2.3Utah
1.9N.Mex.
1.8Nev.
1.3
7 million acres
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Forest mortality due to bark beetles, Utah, 1998-2010, and the West, 1997-2009
Sources: International Journal of Plant Sciences, U.S. Forest Service Reported by Brandon Loomis, graphics by Todd Adams | The Salt Lake Tribune
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Utah, Uinta Forestspotlight troublewith bark beetles
The state’s coniferforests, particularlyin the Uinta Range ofnorthern Utah,have taken a huge hit, as evidenced bythe red-shaded areas,shown right. The U.S. Forest Serviceestimates that from1998-2010, 13.6million conifer treeswere lost to insects,primarily pinebeetles, and disease.That represents about1.9 million acres offorested area.
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Dead or dyingconifer forests
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Great
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Uinta Mountains
Book Cliffs
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UTAH Manti-La SalNationalForest
EscalanteMountains
San JuanRiver drainage
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Beetles alteringforest landscapein the West
With 6.6 million acresof dead or dying conifer forests, Colorado is the most afflicted Western state.Utah is the ninth-most affectedstate.
Conifer mortality Bark beetles are ravaging the West’s forestlands