Fig. 4
From: Long-term landscape changes in a subalpine spruce-fir forest in central Utah, USA
Line plots showing the charcoal-based fire reconstruction for Emerald Lake. Panel (a) presents reconstructed ENSO activity (Moy et al. 2002), panel (b) depicts the fire return intervals (time since fire), panel (c) provides histograms of peak magnitude, and panel (d) shows charcoal accumulation rates (CHAR) in black silhouette plot, background charcoal (BCHAR) in gray line plot, and peak events (+). Charcoal data were analyzed using the CharAnalysis software package (Higuera et al., 2009)