Average number of green colonies on malt agar plates with various wood species additives. Different letters represent significant differences at alpha = 0.05. n = 12 replicates per wood species. Error bars represent one standard deviation. Maximum number of colonies = 4. sm = sugar maple, th = tree of heaven, sa = spalted aspen.
Robinson et al. AMB Express 2012 2:15 doi:10.1186/2191-0855-2-15