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Invasive Sheep Threaten Native Desert Species
19 Sep
Summary
- Introduced aoudad compete with native desert bighorn sheep for resources.
- Aoudad have a more general diet, using lower-quality food sources.
- Competition for limited forage is a concern, especially in dry seasons.
Aoudad, also known as Barbary sheep, native to North Africa, have become established in the American Southwest after being introduced for hunting. Their remarkable adaptability to arid, rugged terrain allows them to thrive in environments also critical for native species like desert bighorn sheep.
These introduced animals occupy similar habitats and consume overlapping vegetation and water resources. Research indicates aoudad possess a more generalist diet, efficiently utilizing lower-quality food sources. This contrasts with bighorn sheep's preference for higher-quality forage, suggesting a potential for increased competition, especially during resource-scarce periods.
The presence of aoudad presents a conservation challenge for native desert bighorn sheep, whose populations are already influenced by limited geography, water availability, and forage. Monitoring efforts, including ground surveys and tracking, are underway to understand and manage these interactions, focusing on maintaining scarce resources for both species.
