AUSTRALIA — Ponder this: If a tree falls in the forest because a storm has knocked it over, should you cart it away and make use of the wood or just let fallen logs lie? Almost three years since a savage windstorm tore through Victoria, some forests are still recovering from the catastrophe that brought down countless trees and left them strewn across the landscape. With fallen trees still prevalent in many areas, forest advocates and scientists are calling for Victoria’s windblown woods to be left alone. …But the Department of Energy, Environment and Climate Action insists its operations are necessary to mitigate fire hazards and minimise the risk of damaged trees falling in public areas. …David Lindenmayer, a forest ecology professor with the Australian National University, said driving heavy machinery into windblown forests inflicted further damage on them and hampered their recovery.