Why can postwildfire runoff and erosion vary from negligible to extreme?

Philip Noske1, Petter Nyman1, Patrick N J Lane2, Rene Van der Sant3 and Gary J Sheridan2, (1)University of Melbourne, School of Ecosystem and Forest Sciences, Parkville, VIC, Australia, (2)University of Melbourne, School of Agriculture, Food and Ecosystem Sciences, Parkville, VIC, Australia, (3)University of Melbourne, School of Ecosystem and Forest Sciences, Parkville, Australia