How Does Fencing Impact Pronghorn Habitat and Movement?

Habitat Fragmentation

Fencing can create barriers that isolate pronghorn populations, reducing their ability to migrate and interact with other groups. This can lead to inbreeding and decreased genetic diversity, ultimately affecting population viability. For example, a study in Wyoming found that pronghorn populations behind fences showed lower genetic diversity than those without fences.

Movement Restriction

Fencing can also restrict pronghorn movement, particularly across high-priority migration routes. A study in Idaho found that pronghorn movement was significantly reduced when fences were present along designated migration routes. To mitigate this, land managers can use techniques such as fence removal or modification, or the creation of wildlife-friendly corridors.

Conservation Strategies

Land managers and conservationists can work together to develop strategies that balance human needs with pronghorn conservation. This can include the use of wildlife-friendly fencing, such as flexible or breakable fencing that allows pronghorn to pass through, or the creation of pronghorn-friendly habitat corridors. For example, the BLM has established a network of wildlife corridors across the American West to help connect isolated pronghorn populations.