Artificial Shelters as a Monitoring and Conservation Tool for Terrestrial Breeding Frogs

Area of Science:

• Herpetology
• Conservation Biology
• Ecology

Background:

• Amphibians are a highly threatened vertebrate group.
• Monitoring cryptic, fossorial species poses significant challenges, often risking habitat disturbance.

Purpose of the Study:

• To evaluate artificial shelters as a monitoring and conservation tool for fossorial amphibians.
• To compare the efficacy of concrete versus wooden shelter designs.

Main Methods:

• Deployment of concrete and wooden artificial shelters in the Australian Wet Tropics over two years.
• Monthly surveys to record the number of Austrochaperina robusta using shelters.
• Microclimate logging and analysis of environmental factors influencing frog abundance.

Main Results:

• Concrete shelters were used more frequently (75% of records) and showed thermal buffering benefits.
• Frog abundance exhibited seasonal trends, peaking in cooler, drier months.
• Concrete shelters provided better thermal regulation and were associated with higher frog numbers, especially when minimum temperatures increased.

Conclusions:

• Artificial shelters, especially concrete designs, are effective for low-impact, long-term monitoring of fossorial frogs.
• These shelters can contribute to conservation by providing refugia and protection.
• Shelter design, microclimate buffering, understory cover, and spacing significantly influence fossorial frog abundance.