From the Summary: 'Two 30-ha areas of regenerated karri forest (aged 12 and 15 years) were burnt in February 1985 as part of a program to examine the behaviour and effects of fire in young stands. Collapsed thickets of dead Acacia urophylla were a major component of the fuel at both sites. Wide ignition spacing and stable evening weather conditions resulted in low fire intensities (<350 kW.m-1) with scorch heights below 15 m. However, higher fire intensities (estimated up to 1500 kW.m-1) rapidly developed under the influence of slope, wind and close ignition spacing, even in relatively moist fuels (15 per cent moisture content). Fire intensities above 600 kW.m-1 fully scorched the codominant trees and caused some localised defoliation. Plots have been established to monitor tree damage and growth following each fire. Guidelines for operational burning developed from this study have been successfully used to prescribe low intensity fires in several other stands of young regrowth.'