Using a geodatabase, researchers found that the maximum elevation extent of wildfires and the probability of wildfire occurrence above 3000 m have increased over the last century in the Sierra Nevada. This trend may accelerate vegetation shifts towards upper montane forest types in current subalpine systems.
Schwartz, M., N. Butt, C. Dolanc, A. Holguin, M.Moritz, M. North, H. Safford, N. Stephenson, J. Thorne, and P. van Mantgem. 2015. Increasing elevation of fire in the Sierra Nevada and implications for forest change. Ecosphere 6(7): 121. DOI: 10.1890/ES15-00003.1.