Skip to Main Content
Forage resource evaluation system for habitat—deer: an interactive deer habitat modelAuthor(s): Thomas A. Hanley; Donald E. Spalinger; Kenrick J. Mock; Oran L. Weaver; Grant M. Harris
Source: Gen. Tech. Rep. PNW-GTR-858. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 64 p
Publication Series: General Technical Report (GTR)
Station: Pacific Northwest Research Station
Download Publication (1.65 MB)
DescriptionWe describe a food-based system for quantitatively evaluating habitat quality for deer called the Forage Resource Evaluation System for Habitat and provide its rationale and suggestions for use. The system was developed as a tool for wildlife biologists and other natural resource managers and planners interested in evaluating habitat quality and, especially, comparing two or more patches of habitat or the same patch at different seasons or under different conditions. It is based on the quantity (of biomass) and quality (digestible energy and digestible protein) of the habitat’s food resources in relation to user-specified metabolic requirements of deer (which differ with species, age, sex, season, and reproductive status). It uses a linear programming algorithm to determine the suitable forage that can sustain deer at the specified requirements. Output includes the number of deer days (1 deer day equals one deer for 1 day) per unit area that the available food resources are capable of supporting, the species composition of the solution set to the linear programming problem, and the relative importance of biomass versus nutritional quality as limiting factors of the habitat for deer. The system is accessed via the Internet (http://cervid.uaa.alaska.edu/deer/home.aspx) and consists of a Web-based application for analysis at the patch (or “stand”) scale and a geographical information system based application for analysis at the landscape scale, which includes spatial effects of patch sizes and their shapes and locations in relation to deer home ranges. Although the system was developed for Sitka black-tailed deer (Odocoileus hemionus sitkensis) in southeastern Alaska and illustrated with examples for them, it also can be applied for other species of deer (with the exception of very large species such as moose, Alces alces) elsewhere in the world.
- Visit PNW's Publication Request Page to request a hard copy of this publication.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationHanley, Thomas A.; Spalinger, Donald E.; Mock, Kenrick J.; Weaver, Oran L.; Harris, Grant M. 2012. Forage resource evaluation system for habitat—deer: an interactive deer habitat model. Gen. Tech. Rep. PNW-GTR-858. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 64 p.
KeywordsBlack-tailed deer, Odocoilius hemionus, Alaska, habitat evaluation, carrying capacity, nutrition, forest planning
- The impact of tannins on protein, dry matter, and energy digestion in moose (Alces alces)
- Effects of forest disturbance and soil depth on digestible energy for moose and white-tailed deer
- Movements and habitat use of rocky mountain elk and mule deer.
XML: View XML