The use of rope bridges to study the colonisation of restored rainforest habitat by arboreal mammals

Abstract

This study tested the utility of a rope bridge across a road that traversed restored rainforest habitat (5–8 years old) to assess the use of these new habitats by arboreal mammals. Camera-trapping revealed common brushtail possums (Trichosurus vulpecula), green ringtail possums (Pseudochirops archeri) and Herbert River ringtail possums (Pseudochirulus herbertensis) used the rope bridge regularly while striped possums (Dactylopsila trivirgata), fawn-footed melomys (Melomys cervinipes), long-tailed pygmy-possums (Cercartetus caudatus) and Lumholtz’s tree-kangaroos (Dendrolagus lumholtzi) were recorded at the bridge accesses, but no crossings could be proven. No Lemuroid ringtail possums (Hemibelideus lemuroides) were recorded near the rope bridge. Differences in the use of the restored rainforest habitat and the crossing structure are likely to be caused by differences in the species’ reliance on features in mature forests, and their responses to rainforest edges. The results support the utility of canopy crossing structures to facilitate the use of restored habitat by arboreal mammals.