Graduation Year

2025

Graduation Month

May

Document Type

Thesis

Degree Name

Bachelor of Science

School or Department

Biological Sciences, Division of

Major

Biology – Cellular and Molecular Biology

Faculty Mentor Department

Wildlife Biology

Faculty Mentor

Sattie Fisher

Keywords

Overpopulation, Wild Horses, Starvation, Indian Reservation, Overgrazing, Elk, Deer

Subject Categories

Animal Sciences | Biology | Ecology and Evolutionary Biology

Abstract

When considering wild horse overpopulation, there are many different facets of the issue that need to be addressed. Wild horse overpopulation is a significant issue across the American West, particularly on lands managed by the Bureau of Land Management( BLM). The largest populations are often found in Nevada, other states include California, Oregon, Utah, Wyoming, Washington, and Arizona. Whether there are thousands of horses on many acres of land, or hundreds spread across smaller reservations or public lands, the effects of their overpopulation remain as imminent as ever. Overpopulation is causing ecological damage and strain on resources leading to concerns about native plant and animal species, horse herd health, and how to manage this issue for a result that is achievable. The BLM has implemented a few different resources for combating this issue but with horse herds doubling on average every 4 years and tripling approximately every 6 years, it is clear that more research and resources need to be dedicated to solving this problem before irreversible damage to native species and habitats takes place. Over the semester, I was able to look at and partake in a small set of Fisher’s research looking into the impacts of wild horses on elk and deer on the Yakama Indian Reservation. Specifically focusing on the statistics given of deer, elk, and wild horse movement through trail cameras to determine if overpopulation of wild horses is in fact harming native mammal populations. Tracking this data supports the main idea of how the mismanagement of wild horse populations has large effects as a whole, not only to their surrounding environment but also consequences within their own species. The goal of this work is to spread awareness of the overpopulation of wild horses and look deeper into the exact harmful effects they have on the environment.

Honors College Research Project

1

GLI Capstone Project

no

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