Breeding Bird Surveys in Wrangell-St Elias National Park and Preserve, Alaska,
Wrangell-St Elias National Park and Preserve. Breeding Bird Surveys in Wrangell-St Elias National Park and Preserve, Alaska,. 1980-1996. National Park Service
The Breeding Bird Survey (BBS)was initiated in 1966 as a joint program between the USFWS and the Canadian Wildlife Service to monitor population trends of North American breeding birds. The BBS is an index, not a census of bird populations. Survey data provide both local and continental information on long- and short-term population trends and shifts, normal year-to-year variation, and invasion of exotic species. Trend data can be used to assist management in determining if, and to what degree, a species is declining, thus providing an opportunity to employ research or management techniques before irreversible events occur. The BBS initially detected declines in neotropical migrants. WRST began two BBS survey routes along the McCarthy and Nabesna roads in 1989. A third survey route was added along the west end of the McCarthy road in 1990 and a fourth route was added along the Tok Cut-off north of Nabesna (Slana route) in 1994.
- Type
- Project
- Authors
- Wrangell-St Elias National Park and Preserve
- Publisher
- National Park Service
- Units
- WRST
- Keywords
- alaska, bird, breeding