Project title: Cascading effects of Australia’s ecological extinctions on biodiversity and ecosystem function
In many Australian ecosystems, extinctions and declines of mammals have been dramatic, with formerly abundant species now “functionally extinct” – that is, too rare to continue to play important ecological roles.
The loss of entire functional guilds may have cascading effects on biodiversity and ecosystem function.
Using a multi-scale experimental approach, we are investigating the ecosystem-wide impacts of mammal declines, accounting for interactions with climate.
Many threatened Australian mammals forage by digging in the soil and are therefore considered ecosystem engineers.
They are also important predators of invertebrates.
This research will produce new insights into the pre-European state of Australian ecosystems and more realistic targets for ecosystem restoration.
- Associate Professor Heloise Gibb
- Orsi Decker (PhD candidate)
- Dr Nicole Coggan
- Colin Silvey
- Simon Verdon
- Dr Steve Leonard
- Australian Wildlife Conservancy
- Arid Recovery
- Mt Rothwell Conservation and Research Centre
- Australia and Pacific Science Foundation
- Holsworth Wildlife Research Endowment
- Australian Research Council
- Gibb, H., Verdon, S. J., Weir, T., Johansson, T., L'Hotellier, F., & Hayward, M. W. (2018). Testing top‐down and bottom‐up effects on arid zone beetle assemblages following mammal reintroduction. Austral Ecology, 43, 288-300.
- Coggan, N. V., Hayward, M. W., & Gibb, H. (2016). Termite activity and decomposition are influenced by digging mammal reintroductions along an aridity gradient. Journal of Arid Environments, 133, 85-93.
- Silvey, C. J., Hayward, M. W., & Gibb, H. (2015). Effects of reconstruction of a pre-European vertebrate assemblage on ground-dwelling arachnids in arid Australia. Oecologia, 178, 497-509.