Matching Items (2)
Filtering by
- All Subjects: Desert conservation
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- Creators: Douglas, R. Douglas
- Creators: Rowe, Sanford
- Resource Type: Text
ContributorsRowe, Sanford (Author) / Bass, W. W. (Author)
Created1919-02-12
Description
Letter from Sanford Rowe and W. W. Bass to Carl Hayden requesting a re-examination on the proposed park boundaries as they are disadvantageous to current land owners surrounding the 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?