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Table 1 Fuel classes, forest structure, and composition metrics measured in long-unburned Sierra mixed conifer forests in June 2011 at the Yosemite Forest Dynamics Plot, Yosemite National Park, California, USA. We modeled local fuel classes (response variable) based on forest structure and composition metrics (predictor variables) calculated at two scales: 0.015 ha and 0.1 ha

From: Fuel dynamics after reintroduced fire in an old-growth Sierra Nevada mixed-conifer forest

Response and predictor variables Source Spatial scales of data Units
Fuel component Field measurements   Mg ha−1
 1-hour   2 m planar transect (npre = 112; npre-post = 99)  
 10-hour   2 m planar transect (npre = 112; npre-post = 99)  
 100-hour   4 m planar transect (npre = 112; npre-post = 99)  
 CWD (1000-hour)   20 m planar transect (npre=112; npre-post = 99)  
 Duff   Point samples (npre = 1120; npre-post = 990)  
 Litter   Point samples (npre = 1120; npre-post = 990)  
Overstory components (trees >1 cm DBH) Stem map Circular area: 6.91 m radius (0.015 ha) and 17.84 m radius (0.1 ha) m2 ha−1
 Live trees of all species    
 Live Abies concolor    
 Live Pinus lambertiana    
 Dead trees of all species    
 Dead Abies concolor    
 Dead Pinus lambertiana    
 All live and dead trees