Locating Waterfowl Observations on Aerial Surveys
Butler WI, Hodges JI, Stehn RA. 1995. Locating Waterfowl Observations on Aerial Surveys. Wildlife Society Bulletin. 23(2):148-154
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with GPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along transects of 214 m. The method provided flexibility in survey design and data analysis. Although developed for geese nesting near the coast of the Yukon-Kuskokwim Delta, the methods are widely applicable and were used on other waterfowl surveys in Alaska to map distribution and relative abundance of waterfowl. Accurate location data with GIS analysis and display may improve precision and usefulness of data from any aerial transect survey.
- Type
- Journal Article
- Authors
- Butler, William; Hodges, John; Stehn, Robert
- Units
- CAKN , DENA , WRST , YUCH
- Keywords
- Aerial Survey, breeding-ground survey, Canada Geese, Distribution, Geographic Information System, GIS, Global Positioning System, GPS, long-range navigation, loran, Observations, Visibility Bias