Fig. 4
From: Climatic influence on fire regime (1700 to 2008) in the Nazas watershed, Durango, Mexico
Superposed Epoch Analysis (SEA) charts showing the relationship between reconstructed winter-spring precipitation for the Upper Nazas watershed (Cerano-Paredes et al. 2012) and fire years listed in Fig. 3. a all fires, b fires with ≥10% scarred trees, and c fires with ≥25% scarred trees. The fire year is indicated by 0. The horizontal line in each panel marks significant departures based on bootstrapped confidence intervals (dotted = P < 0.05; dashed = P < 0.01; solid = P < 0.001)