Journal article

Estimating the benefit of quarantine: eradicating invasive cane toads from islands

Adam S Smart, Reid Tingley, Ben L Phillips



Islands are increasingly used to protect endangered populations from the negative impacts of invasive spicies. Quarantine efforts on islands are likely to be undervalued in circumstances in which a failure incurs non-economic costs. One approach to ascribe monetary value to such efforts is by modeling the expense of restoring a system to its former state. Using field-based removal experiments on two different islands off northern Australia separated by > 400 km, we estimate cane toad densities, detection probabilities, and the resulting effort needed to eradicate toads from an island. We use these estimates to conservatively evaluate the financial benefit of cane toad quarantine across offsh..

View full abstract

University of Melbourne Researchers


Awarded by Australian Research Council Future Fellowship

Awarded by Australian Research Council DECRA

Funding Acknowledgements

We recognise and thank the Kenbi Traditional Custodians (Raylene and Zoe Singh) for land access permission. We thank Chris Jolly, John Moreen and the Kenbi Ranger Group for their aid in the field, and for logistical support. Corrin Everitt, John Llewelyn, Ruchira Somaweera, and Greg Clarke provided constructive comments and advice. We also thank Greg Smith from Lake Argyle Cruises for his input and local knowledge, and Jane Austen for the opening line. All procedures were approved by the University of Melbourne Animal Ethics Committee (1714277.1). This research was supported by an Australian Research Council Future Fellowship to BP (FT160100198) and an Australian Research Council DECRA to RT (DE170100601). Land access was granted via the Northern Land Council (permit 82368).