Matching Items (3)
Filtering by
- All Subjects: Roads
- All Subjects: Sonoran Desert--Ecology
- Creators: Ickes, Harold L.
- Creators: Douglas, R. Douglas
- Resource Type: Text
ContributorsIckes, Harold L. (Author) / United States Department of the Interior (Publisher)
Created1940
DescriptionGuide Leaflet No. 3 detailing the west rim drive in the Grand Canyon.
ContributorsIckes, Harold L. (Author) / United States Department of the Interior (Publisher)
Created1933
DescriptionGuide Leaflet No. 1 detailing the desert view drive of the Grand Canyon.
ContributorsProudfoot, Glenn A. (Author) / Douglas, R. Douglas (Author) / Pima County (Ariz.). County Administrator's Office (Publisher)
Created2001-01
Description
Mr. Proudfoot, the leading pygmy-owl biologist in the United States, has worked for the last two years to gather and analyze the data that allows us to address issues regarding the genetic viability of ferruginous pygmy-owls in Arizona and to establish a framework for future management efforts. The two major questions addressed are (1) do populations of concern lack genetic variation relative to putative healthy populations, and (2) how unique are geographically distinct populations within a species of special concern?