Pinyon-Juniper (PJ) woodland is the 3rd largest vegetation type in the US. Covering 35.5% of the Colorado Plateau, and is the largest vegetation type administered by the Bureau of Land Management (BLM) on the Colorado Plateau (Mast et al 1996). These woodlands have been increasing dramatically in density and extent over the last 100 years (West 1999). In response to this increase and a concomitant loss of grasslands, the BLM has been actively treating these lands by removing pinyon and juniper and seeding with desired vegetation since the 1950's. (Sydoriak 2000) To date, over 700 treatments with varying methods have been applied across ~700,000 acres of PJ woodland on BLM lands. Increasing pressure to manage pinyon-juniper woodlands at the wilderness-urban interface is a driving force in management decisions for fuel hazards reduction (Rome et al 2003).