摘要: Fragmentation is a severe threat to tropical rainforests. However the habitat loss and less extensive fragmentation caused by roads can also be threat, not only through allowing access remote areas, but suite of insidious associated impacts. These include abiotic biotic edge effects adjacent road clearings, disturbance impacts caused vehicle operation, invasions weeds, feral alien fauna disease, faunal mortality from collisions. In combination, these create significant barrier movements rainforest biota. Impacts ameliorated clever design sustainable operation.