My publications and reports, each linked with accompanying PDFs, preprints, and/or news pieces.

Written by Oliver C. Stringham

Managing propagule pressure to prevent invasive species establishments: propagule size, number, and risk–release curve

Keeping propagule pressure low can reduce the probability a non-native species will establish in a new location. Here we develop a mathematical framework that can determine the required reduction in levels for propagule size and number (representative of management actions) to maintain a target establishment probability. Our tool can serve to guide the development of new invasive species management plans in a transparent and quantitative manner. Together with information on the costs associated with approaches to reducing propagule pressure, our tool can be used to identify the most cost‐effective approach to prevent invasive species establishments.

By Oliver C. Stringham & Julie L. Lockwood in Research

February 26, 2021

A guide to using the Internet to monitor and quantify the wildlife trade

The internet is a vast source of wildlife trade data. Here, we present an accessible guide for Internet‐based wildlife trade surveillance, which uses a repeatable and systematic method to automate data collection from relevant websites. Our guide is adaptable to the multitude of trade‐based contexts including different focal taxa or derived parts, and locations of interest.

By Oliver C. Stringham, Adam Toomes, Aurelie M. Kanishka, Lewis Mitchell, Sarah Heinrich, Joshua V. Ross, Phillip Cassey in Research

December 5, 2020

Response to the Department of Agriculture, Water and the Environment’s ‘Import risk review for psittacine birds from all countries’

We provide comments to The Department of Agriculture, Water and the Environment on their ‘Import risk review for psittacine birds from all countries’ draft report. Due to serious key omissions, we do not support the import of psittacine birds based on the evidence provided in the risk review. The report does not provide sufficient transparency, nor evidence-based assessments of all benefits, risks, or associated costs, of allowing the import of psittacine birds. If the Department wishes to pursue this assessment, then future risk reviews must include the associated costs of facilitating new invasive species, and provide justification on the broader societal benefits of allowing import of psittacine birds. It is our professional scientific opinion that the benefits of importing psittacine birds are outweighed by the significant damages caused by the potential introduction of new invasive species.

By Katherine Hill, Phill Cassey, Oliver C. Stringham, Adam Toomes in Report

September 18, 2020

Australia’s wish list of exotic pets: biosecurity and conservation implications of desired alien and illegal pet species

The live pet trade is a major pathways for invasive species. Australia imposes tough regulations against the trade of non-native animals as pets. However, there exists an illegal trade of these animals in Australia that threatens biosecurity. Here, we used government records of enquiries from the general public to assess the characteristics of species that are likely desired as pets. We found that desired species are more likely to invasive species elsewhere or at risk of extinction due to trade. Our findings suggest that in absence of strict laws, an unregulated pet trade would threaten Australian biosecurity and global conservation efforts.

By Adam Toomes, Oliver C. Stringham, Lewis Mitchell, Joshua V. Ross, Phillip Cassey in Research

August 18, 2020

Illegal Wildlife Trade: A Threat to Environmental Biosecurity, Biodiversity, Human Health and Wellbeing

Illegal wildlife trade (IWT) directly threatens tens of thousands of species. It is critical that it is taken seriously in order to safeguard our environmental assets and provide resilient landscapes for our unique flora and fauna. Here, we provide an infographic of IWT including: what it is, how bad is it, why can’t we stop it, and solutions.

By Phill Cassey, Talia Wittmann, Adam Toomes, Oliver C. Stringham in Report

March 1, 2020