Fig. 3From: A systematic review of empirical evidence for landscape-level fuel treatment effectivenessNumber of study sites within level III EPA Ecoregions in the USA (US Environmental Protection Agency 2013) from 26 papers identified in the systematic review of landscape-level fuel treatment effectiveness. This figure does not include study sites in Barnett et al. (2016), which evaluated all fuel treatments on federal lands in all ecoregionsBack to article page