Publications by authors named "P Caley"
Article Synopsis
- International trade in horticultural products requires strict phytosanitary inspections to certify that the levels of infestation in exported fruit are below certain thresholds.
- The study introduces a hierarchical Bayesian model that combines data from in-field monitoring and consignment inspections to determine the overall prevalence of infested fruit in a production system.
- Results show that effective inspection practices, combined with pre-harvest monitoring, can improve confidence in identifying low infestation rates, highlighting the importance of both methods in managing pest prevalence.
Article Synopsis
- Monitoring is essential for improving the status of threatened species, as it provides baseline data to track their distribution and abundance.
- Bats in the genus Pteropus are threatened by habitat loss, human conflict, and hunting, yet few are monitored due to challenges like high mobility and disturbance in their habitats.
- A 10-year study of Australia's grey-headed flying-fox found the population remained stable, emphasizing the importance of long-term monitoring for understanding and managing nomadic and long-lived species.
Pest insect surveillance using lures is widely used to support market access requirements for traded articles that are hosts or carriers of quarantine pests. Modeling has been used extensively to guide the design of surveillance to support pest free area claims but is less commonly applied to provide confidence in pest freedom or low pest prevalence within sites registered for trade. Site-based surveillance typically needs to detect pests that are already present in the site or that may be entering the site from surrounding areas.
View Article and Find Full Text PDFThe Bogong moth is well known for its remarkable long-distance migration - a return journey from the plains of southeast Australia to the Australian Alps - as well as for its cultural significance for Indigenous Australians. Each spring, as many as four billion moths are estimated to arrive in the Australian Alps to aestivate in cool mountain caves and in boulder fields, bringing with them a massive annual influx of energy and nutrients critical for the health of the alpine ecosystem. However, a massive decline in moths present at their aestivation sites has occurred over the past 3 years, with only a few individuals present where hundreds of thousands could earlier be found.
View Article and Find Full Text PDFMonitoring flying-foxes is challenging as their extreme mobility produces highly dynamic population processes, considerable logistic difficulty, and variability in estimated population size. We report on methods for inferring population trend for the population of the spectacled flying-fox (Pteropus conspicillatus) in Australia. Monthly monitoring is conducted at all known roost sites across the species' range in the Wet Tropics Region.
View Article and Find Full Text PDF