These researchers did extensive studies of postfire recovery following the 2002 McNally Fire in Sequoia National Forest and compared ancient stands of chaparral with younger stands.
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Keeley, J. E., A. H. Pfaff, and H. D. Safford. 2005. Fire suppression impacts on postfire recovery of Sierra Nevada chaparral shrublands. International Journal of Wildland Fire 14:255-265.