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Table 2 Overview of the three equations and their variables used to understand plant communities in the Illilouette Creek basin in Yosemite National Park and Sugarloaf Valley in Kings Canyon National Park, California, USA. Response variables were collected from 2002 to 2013 to observe naturally occurring patterns of forest and understory structure and composition in relationship to fire regime. The response variables had unique combinations of explanatory variables due to the questions that were being asked. Plot-neighborhood fire experience includes pyrodiversity indices for buffers surrounding the plots. Plot-based fire experience includes most recent fire severity and time since last fire. The interaction of plot-based fire experiences includes the most recent fire severity and time since last fire. The interaction of plot-neighborhood and plot-based fire experiences includes pyrodiversity and the most recent fire severity, and pyrodiversity and time since fire. Environmental variables include elevation, slope, climatic water deficit (CWD), heat load, canopy cover, litter depth, and soil texture. All equations included the random effect of park, plot, and survey year. The equation assessing richness had one additional environmental variable: shrub cover

From: Drivers of understory plant communities in Sierra Nevada mixed conifer forests with pyrodiversity

Variables Equation
1 2 3
Response variables
 Cover X   
 Evenness X   
 Richness   X X
 Simpson’s   X X
Explanatory variables
 Plot-neighborhood fire experience   X X
 All pyrodiversity indices for all plot buffers   X  
 One pyrodiversity index for one plot buffer    X
 Plot-based fire experience X X X
 Interaction of plot-based fire experiences X   
 Interaction of plot-neighborhood and plot-based fire experiences    X
 Environmental X X X
Random effects X X X