Does prescribed fire promote resistance to drought in low elevation forests of the Sierra Nevada, California, USA?

This study compared trees in 6- to 28-year-old burned and unburned sites in the third drought year in mixed conifer forests at low elevation in Kings Canyon, Sequoia, and Yosemite national parks in California, USA.  Common conifer species found in the burned plots had significantly reduced probability of mortality compared to unburned plots during the drought.  Stand density was significantly lower in burned versus unburned sites, supporting the idea that reduced competition may be responsible for the differential drought mortality response.