Fig. 6
From: Climatic influence on fire regime (1700 to 2008) in the Nazas watershed, Durango, Mexico
SEA charts showing the relationship between PDSI index and fire years. a All fires, b fires with ≥10% scarred trees, and c fires with ≥25% scarred trees. The fire year is indicated by 0, while the horizontal line in each panel mark significant departures based on bootstrapped confidence intervals (dotted = P < 0.05; dashed = P < 0.01; solid = P < 0.001). JJA = June, July, August. Ciénega de la Vaca, Durango, Mexico, for the period from 1739 to 2008