A large area of pine mortality on National Forest lands at the southern end of the Blue Mountains in Oregon.
Note: This photo is Figure 11 in Forest Health Highlights in Oregon - 2015,
www.fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd497928.pdf Excerpt: "Mountain pine beetle (MPB; Dendroctonus ponderosae) is most often associated with overly dense or mature lodgepole pine but will also infest large-diameter ponderosa as well as the five-needle pines (sugar, western white and whitebark). In 2015, aerial surveys attributed over 290,000 acres of tree mortality to MPB (Figure 11). MPB-caused mortality across all pine species was a quarter less than that from 2014, most likely due to the loss of preferred hosts from previous attacks rather than from improving conditions. "
Photo by: Rob Flowers
Date: 2015
Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Central Oregon Insect and Disease Service Center.
Source: Forest Health Highlights in Oregon - 2015;
www.fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd497928.pdf Annual Forest Health Highlights for each state are available here:
www.fs.fed.us/foresthealth/protecting-forest/forest-healt... Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
