Pacific Southwest Region (Google map)
1323 Club Drive
Vallejo, CA 94592
Voice: 707.562.8737
TTY: 707.562.9240
Fax: 707.562.9130
Office hours: 7:30 a.m. – 4:00 p.m.
Scan to add this information to your contacts list
Our mission is to sustain the health, diversity, and productivity of the Nation's forests and grasslands to meet the needs of present and future generations.
Insects and diseases are integral components of forest ecosystems. They play a critical role in shaping forest lands, nutrient recycling, and small-scale disturbance. Disturbances result in changes in the ecosystem function which often means mortality of trees. Tree mortality and other forest damage is detected by annual aerial surveys over forested lands.The primary purpose of the aerial survey is to create sketch maps of areas containing current year conifer and hardwood mortality, defoliation, and other damage. Number of trees and acres with damage are calculated for areas surveyed and reported annually using the methodology described here.
