Fieldwork in Denali National Park and Preserve recorded 86 bird taxa in 1996 through systematic surveys. The Alaska Bird Observatory conducted this research, analyzing seasonal detection probabilities and interannual abundance differences from 1993 to 1996.
Use Cases
- Model interannual variation in relative abundance for species like White-winged Crossbill and Orange-crowned Warbler using count station data.
- Analyze seasonal detection probabilities, such as for Willow Ptarmigan which had high detection only in early May.
- Assess species richness patterns across habitats, noting higher richness on the park's west side with diverse wetland types.
- Calculate statistical power for monitoring programs using criteria like a 90% detection probability at over 14% of stations.
- Compare population trends between common, widespread species and rare species occurring at less than 2% of counting stations.
Strengths
- Provides multi-year comparison with data from 1993, 1994, 1995, and 1996.
- Includes analysis for 86 distinct bird taxa detected during systematic surveys.
- Survey design incorporated 18 BBS-style counts and nine off-road routes for robust trend estimation.
Limitations
- Data is temporally stale, with the last update recorded in 1997.
- Geographic scope is limited to a single national park in Alaska.
- Sample size details like total row count or number of counting stations per year are unspecified.
Provenance
- Source
- Alaska Bird Observatory, collected for NASA EarthData via SCIOPS.
- Collection Method
- Field surveys using Breeding Bird Survey (BBS)-style on-road counts and off-road route resurveys.
- Time Range
- 1993 to 1996, with focus on 1996 fieldwork.
- Freshness
- null
- Geography
- Denali National Park and Preserve, Alaska, USA.