Streamflow response of mixed-species eucalypt forests to patch cutting and thinning treatments

Abstract

An 11-year paired-catchment study was implemented to assess the effect of differing logging practices on streamflow in mixed-species eucalypt forest at Tantawangalo Creek, southeastern Australia. Following a 3-year calibration period, Ceb catchment was retained as a control, Wicksend catchment was patch-cut to remove 22% of basal area, and Willbob catchment was thinned to remove 12% of basal area. The treatments resulted in an initial increase in monthly total streamflow and baseflow at both treated catchments. In annual terms, total streamflow increased by 10% in the first 3 years after logging at Wicksend, and by 31% for the first 4 years at Willbob, despite the difference in basal area re..