The updated Bomford 2008 models have been further explored by the Department of Agriculture & Food, Western Australia (DAFWA) to confirm that they reasonably predict risks across a full range of exotic species and threat levels. Risk assessments for Australia were conducted for a range of taxa (mammals, reptiles, amphibians and one bird), from species internationally recognised as invasive to species perceived to present low risks, and including:
- species not in Australia
- species not in Australia but detected entering
- captive or pet species in Australia but not in the wild
- captive or pet species in Australia and detected in the wild on some occasions
- ‘sleeper’ or other species with isolated populations in the wild in Australia including livestock species
- species well established in the wild in Australia.
Mammals and birds were assessed for the risk they pose if introduced to Australia, by calculating VPC Threat Categories. These categories incorporate risk of establishing populations in the wild, public safety risk, and risk of becoming a pest (eg causing agricultural damage, competing with native fauna, etc). Bomford’s Australian Bird and Mammal Model was used for these assessments.
Reptiles and amphibians were assessed for their risk of establishing wild populations in Australia. This is because there is insufficient reliable information upon which to quantitatively assess the risk of becoming a pest and risk to public safety. The Australian Reptile and Amphibian Model and two versions (3-factor, 7-factor) of the Australian Bird and Mammal Model were used.
The full report (Massam M, Kirkpatrick W and Page A (2010). ‘Assessment and prioritisation of risk for forty introduced animal species’. Invasive Animals Cooperative Research Centre, Canberra) and an Executive Summary, are available for download here or from the link on the right hand side of this page.
This report includes both VPC-endorsed Threat Categories (in the tables below) and some more experimental threat categories (found on the next page).
VPC-endorsed Threat Categories
VPC-endorsed risk assessments for the following species can be downloaded from the links below:
Ornate box turtle
Last updated: September 29, 2011