• How Do Domestic Herbivores Select Nutritious Diets on Rangelands?

      Howery, Larry D.; Provenza, Frederick; Natural Resources & the Environment, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1998-05)
      Animal learning has been shown to play a major role in the development of diet selection by domestic herbivores. Dr. Frederick Provenza and his associates at Utah State University have conducted a series of experiments over the past 15 years to learn how physiological and behavioral mechanisms govern diet selection. This publication synthesizes several key diet selection concepts presented in four recent articles.
    • Using Repeat Color Photography as a Tool to Monitor Rangelands

      Howery, Larry D.; Sundt, Peter; Natural Resources & the Environment, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1998-05)
      It is important to show people that what you say is true when your critics weren't around 10-15 years ago to see the changes you have seen. A series of photographs taken at the same spot through the years can vividly demonstrate change on the range. This article provides an introduction to repeat color photography and explains how it can be used as an important part of a comprehensive rangeland monitoring program.