A 13,000-year history of vegetation and fire in a rare inland pine barrens: The Albany Pine Bush (Albany County, New York, USA)
Fig 7
STU fire record for 13,000–7,000 cal yr B.P.
(a) Plot of the number of raw charcoal particles per sample. (b) Plot of the smoothed signal to noise index (SNI), together with a red line at 3, the SNI cut-off. (c) Plot of the interpolated charcoal accumulation rate (μm2·cm-2·yr-1) record (black bars). Local fire peaks are marked by red crosses and pink vertical lines. The grey line shows background charcoal (BCHAR) and the red line marks the 95% threshold of the Gaussian noise models. (d) Plot of fire return intervals (FRIs). The blue transparent rectangles denote where the SNI < 3, where results should be treated with caution.