for Western Apache Tribal Nation, both as a food source and due to its cultural and ceremonial uses. For decades, Apache elders watched in frustration as groves produced less acorn yield and declined in overall health. The ... Emory oak Collaborative Tribal Restoration Initiative is restor[ing] and protect[ing] Emory oak stands ... to ensure the long-term persistence of Emory oak. Habitat loss, fire suppression, livestock grazing, groundwater reductions, species competition and climate change have all impacted the Emory oak population. This program uses tribal traditional ecological knowledge to guide goals and activities. References External links United States Department of Agriculture Plants Profile: Quercus emoryi emoryi Trees of Sonora Trees of Chihuahua (state) Trees of Coahuila Trees of Durango Trees of Nuevo León Trees of San Luis Potosí Trees of the Southwestern United States Trees of the South-Central United States Flora of Arizona Plants described in 1848 Taxa named by John Torrey Flora of the Sierra Madre Occidental Oaks of Mexico Flora of the Sierra Madre Oriental