Aerial observer Bob Backman sketch mapping insect and disease activity; Washington State Department of Natural Resources.
Photo by: Unknown
Date: c.1991
Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection.
Source: Aerial Survey Program collection.
For more about the Washington State Department of Natural Resources Forest Health program see:
www.dnr.wa.gov/ForestHealth For geospatial data collected during annual aerial forest insect and disease detection surveys see:
www.fs.usda.gov/detail/r6/forest-grasslandhealth/insects-... For related historic program documentation see:
archive.org/details/AerialForestInsectAndDiseaseDetection... Johnson, J. 2016. Aerial forest insect and disease detection surveys in Oregon and Washington 1947-2016: The survey. Gen. Tech. Rep. R6-FHP-GTR-0302. Portland, OR: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. 280 p.
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site:
wfiwc.org/content/history-and-resources Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
