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Table 4 Outcomes of forecast analyses comparing observations at fire-treatment and fire-free control units of Gibbons Creek Barrens Natural Area, Pope County, Illinois, USA, from 2006, 2013, and 2017, to trends predicted within 95% confidence intervals (CI) from a 7-year early-estimation period (1989 to 1995). Also shown are outcomes from a separate analysis using a wider estimation period (1989 to 2006). x = based on forecast period from 1989 to 1995; y = based on forecast period from 1989 to 2006. GCB = Gibbons Creek Barrens, FSB = Forest Service Barrens

From: Do early trends in oak barrens fire treatment predict later outcomes? Insights from three decades of vegetation monitoring

Parameter Treatment: Burn (GCB) Treatment: Control (FSB)
Below CI Within CI Above CI Below CI Within CI Above CI
Overstory
 Tree density x, y     x, y  
 Tree basal area y x   x, y   
 Shrub-sapling density    x, y   x y
Ground Layer
 Species density x, y      x, y
 Species richness x, y     x y
 Species diversity x, y     x y
 Species dominance    x, y y x  
 Percent cover x y    y x