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Providing evidence to improve practice

Individual study: Northern bobwhite Colinus virginianus population and habitat response to pine-grassland restoration in Ouachita National Forest, Arkansas, USA

Published source details

Cram D.S., Masters R.E., Guthery F.S., Engle D.M. & Montague W.G. (2002) Northern bobwhite population and habitat response to pine-grassland restoration. The Journal of Wildlife Management, 66, 1031-1039


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Thin trees within forests Bird Conservation

A replicated study across 40 shortleaf pine Pinus echinata-hardwood stands in Ouachita National Forest, Arkansas, USA, in 1999-2000 (Cram et al. 2002) found that northern bobwhite Colinus virginianus abundances were higher in thinned stands, compared to controls. This study is discussed in more detail in ‘Use prescribed burning’.

 

Use prescribed burning on pine forests Bird Conservation

A replicated study in 1999-2000 across 40 shortleaf pine-hardwood stands in Ouachita National Forest, Arkansas, USA (Cram et al. 2002), found that northern bobwhite Colinus virginianus abundances were highest in stands thinned and burned three years previously (1.5 males heard/count), but were not significantly higher than in stands which were only thinned (1.1) and those thinned and burned two years previously (0.8). Control (unmanaged) stands and those burned a year previously had significantly lower abundances than those burned three years previously or thinned but not burned (control stands: 0.1 calls/count; 0.4 for stands one year after burning). The stands with the highest abundances also had greater understory shrub cover. The management was aimed at restoring pine-grassland habitats.