Reptiles are thought to be particularly vulnerable to habitat loss, fragmentation and degradation. This is because they are sedentary, have relatively low mobility and forage and live in ground layer substrates and associated micro-habitats that are most likely to be affected by degrading processes. Reptiles may also be predated by feral foxes and cats. Consequently, the effect of experimental treatments and the feral animal-proof fence on reptiles is of conservation interest.
Active searches are conducted at the end of summer. This is done to detect adults as well as the young from the preceding spring/summer period. Active searches are made at all 96 sites over a period of 30 minutes each. Observers search substrates such as logs, rocks and bark, and also scan the logswith binoculars for basking reptiles. Amphibians are also recorded when found.
Surveys have been conducted since 2005.