Forest Insect and Disease Conditions in Alaska - 1998
Wittwer D. 1998. Forest Insect and Disease Conditions in Alaska - 1998. U.S. Department of Agriculture (USDA), Forest Service General Technical Report. R10-TP-74. US Forest Service, Forest Health Protection; Alaska Department of Natural Resources. Anchorage, AK
Aerial detection mapping is conducted annually to document the location and extent of active forest insect and disease damage. These surveys generally cover approximately 1/3 of the forested land in Alaska. Unlike 1997, when smoke from large wildfires in interior Alaska and incelement weather precluded flights into many areas of concern, conditions cooperated this year, which allowed us to survey in excess of 26 million acres throughout Alaska. Dispite declines in spruce beetle activity this year, overall insect activity for the state increased 13%: 1,082,750 acres of damage were recorded. The most important diseases and declines in Alaska are characterized as chronic conditions and remain relatively unchanged from 1997.
- Type
- Published Report
- Authors
- Wittwer, Dustin
- Date of Issue
- 1998-12
- Publisher
- US Forest Service, Forest Health Protection; Alaska Department of Natural Resources
- Units
- ALAG , KATM , KEFJ , LACL , SWAN
- Keywords
- Forest, forest conditions, forest damage, forest disease, Insects, Spruce Beetle