Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands.
Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.
Table of Contents
|1 Free-Ranging Horses and Burros in the Western United States||13-30|
|2 Estimating Population Size and Growth Rates||31-60|
|3 Population Processes||61-92|
|4 Methods and Effects of Fertility Management||93-142|
|5 Genetic Diversity in Free-Ranging Horse and Burro Populations||143-174|
|6 Population Models and Evaluation of Models||175-194|
|7 Establishing and Adjusting Appropriate Management Levels||195-238|
|8 Social Considerations in Managing Free-Ranging Horses and Burros||239-264|
|9 A Way Forward||265-270|
|Appendix A: Biographical Sketches||271-276|
|Appendix B: Previous National Research Council Reports on Free-Ranging Horses and Burros||277-284|
|Appendix C: Presentations to the Committee||285-286|
|Appendix D: Questions and Requests from the Committee||287-292|
|Appendix E: Herd Management Areas||293-306|
|Appendix F: Pairwise Values of Genetic Distance (Fst)||307-384|
Committee chair Dr. Guy Palmer of Washington State University shares key findings about using science to improve the BLM wild horse and burro program.
The National Academies Press (NAP) has partnered with Copyright Clearance Center's Rightslink service to offer you a variety of options for reusing NAP content. Through Rightslink, you may request permission to reprint NAP content in another publication, course pack, secure website, or other media. Rightslink allows you to instantly obtain permission, pay related fees, and print a license directly from the NAP website. The complete terms and conditions of your reuse license can be found in the license agreement that will be made available to you during the online order process. To request permission through Rightslink you are required to create an account by filling out a simple online form. The following list describes license reuses offered by the National Academies Press (NAP) through Rightslink:
Click here to obtain permission for the above reuses. If you have questions or comments concerning the Rightslink service, please contact:
Rightslink Customer Care
Tel (toll free): 877/622-5543
To request permission to distribute a PDF, please contact our Customer Service Department at 800-624-6242 for pricing.
To request permission to translate a book published by the National Academies Press or its imprint, the Joseph Henry Press, please click here to view more information.