Accession Number:

ADA281898

Title:

Environmental Factors Influencing Turkey Vulture Distribution and Abundance: A Geographic Information System Application Study

Descriptive Note:

Technical Report

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States

Personal Author(s):

Report Date:

1994-01-01

Pagination or Media Count:

130.0

Abstract:

The objective of this study was to use physiographic, geographic, and climatic correlates to describes and interpret the breeding and wintering distribution and abundance patterns of Turkey Vultures Cathartes aura in the continental United States. Thirty years of data from the National Audubon Societys Christmas Bird Count and the National Biological Surveys Breeding Bird Survey were correlated with remotely sensed and ground sampled environmental data in a raster-based geographic information system. Environmental factors evaluated include elevation, hydrography, thermal reflectance, temperature, precipitation, snow cover, number of frost-free days, vegetation types, and ecoregions, for each l Km2 block of the continental United States. A geographic information system overlay process was used to determine statistical relationships between individual and combinations of environmental factors, and sampled vulture data

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE