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Fire Ecology
Fig. 6 | Fire Ecology

Fig. 6

From: Fire regimes over a 1070-m elevational gradient, San Francisco Peaks/Dook’o’oosłííd, Arizona, USA

Fig. 6

Superposed epoch analysis (SEA) results using fire years in which 25% or more of recording samples were scarred. ENSO is the reconstructed El Niño-Southern Oscillation index and PDSI is the reconstructed summer Palmer Drought Severity Index. These indices are described in the text. Lines identify statistical thresholds (α = 0.05, dashed; α = 0.01, solid) derived from 1000 bootstrapped samples of each climate variable, used to evaluate significance of relationships between climate variables and fire event years

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