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Olson, Mark A.

Interactions between vegetation and. re have the potential to overshadow direct effects of climate change on. re regimes in boreal forests of North America. We develop methods to compare sediment-charcoal records with. re regimes simulated by an ecological model, ALFRESCO (Alaskan Frame-based Ecosystem Code) and apply these methods to evaluate potential causes of a mid-Holocene. re-regime shift in boreal forests of the south-central Brooks Range, Alaska, USA. Fire-return intervals (FRIs, number of years between. res) are estimated over the past 7000 calibrated C-14 years (7-0 kyr BP [before present]) from short-term variations in charcoal accumulation rates (CHARs) at three lakes, and an index of area burned is...
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