Overview
Background
My research interests include causes and detectability of extinction and decline, conservation ecology of threatened and declining marsupials (especially dasyurids and macropods), and tropical mammals, evolutionary ecology, mating systems and life history evolution, especially associations between life histories and seasonality, climate and sexual selection.
My long-term interest in conservation and evolutionary ecology of carnivorous marsupials started at The University of Sydney, where I was an Honours student of Chris Dickman. I did a PhD on ecology of bridled nailtail wallabies at The University of Queensland with Craig Moritz and Anne Goldizen. My research fellowships and programmes since then have investigated ecology and evolution of mammals: a Royal Society fellowship at the University of Aberdeen with Xavier Lambin, an ARC APD fellowship at ANU with Andrew Cockburn, and an ARF fellowship, and a Future Fellowship and UQ Fellowship at The University of Queensland School of Biological Sciences.
I have worked in state environment agencies and the Australian Museum at times before joining UQ in 2007. I am co-chair of the IUCN Marsupial and Monotreme Specialist Group (with Professor John Woinarski), chair of the Australasian Mammal Taxonomy Consortium (affiliated with the Australian Mammal Society), and winner of the 2020 ESA Australian Ecology Research Award.
History:
Principal Research Fellow / Deputy Academic Director UQ Hidden Vale Research Station/ Associate Professor, School of the Environment / Centre for Biodiversity and Conservation Science, UQ. Jan 2022-
UQ Fellow, School of Biological Sciences, University of Queensland. Conservation and life history evolution of mammals in Australia and Melanesia. January 2016 – December 2018.
ARC Future Fellow / Senior Lecturer, School of Biological Sciences, University of Queensland. Life history evolution, extinction and conservation ecology of carnivorous marsupials. January 2012 – December 2015.
ARC Australian Research Fellow, School of Biological Sciences, University of Queensland. Causes of animal extinction and rediscovery, detection of extinction and trajectories of decline in mammals with respect to the spread of invasive predators. January 2007 – December 2011.
Natural Heritage Trust, federal Department of Environment and Heritage, Canberra. Collating published data on threats to nationally endangered vertebrates under the EPBC Act, for the Species Profiles And Threats database. Part time, January- December 2006.
ARC Postdoctoral Fellow, Division of Botany and Zoology, Australian National University, Canberra. Testing hypotheses to explain the evolution of polyandry, using antechinuses. April 2002 to February 2006 (maternity leave December 2004 – October 2005).
Royal Society Postdoctoral fellow, Department of Zoology, University of Aberdeen. Behavioural mechanisms of density-dependent immigration and implications for population dynamics in the water vole. Jan 2000 - April 2001 (maternity leave April 2001 – April 2002).
Postdoctoral Research Associate, Department of Zoology and Entomology, University of Queensland. Ecological correlates of marsupial life histories, behaviour and social organisation. 1999 - 2000.
PhD. The Department of Zoology and Entomology, University of Queensland, supervised by Professor Craig Moritz and Dr Anne Goldizen: Behavioural ecology and demography of the bridled nailtail wallaby, Onychogalea fraenata 1994 - 1998.
Availability
- Associate Professor Diana Fisher is:
- Available for supervision
- Media expert
Qualifications
- Doctor of Philosophy, The University of Queensland
Research interests
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Mammal ecology
Population ecology & biogeography of mammals, especially in Australia & Melanesia. Life history evolution of animals: drivers and mechanisms. Causes and detectability of extinction. Conservation ecology of threatened and declining marsupials, bats, tropical mammals. Evolutionary ecology of mammals: sexual selection, mating systems, life histories Behavioural ecology of mammals: social organisation and maternal care strategies.
Research impacts
Co-chair Australian Marsupial and Monotreme Specialist Group of the IUCN Species Survival Commission 2019-Australian Marsupial and Monotreme Specialist Group
Australian Mammal Taxonomy Consortium Chair 2023- Australian Mammal Taxonomy Consortium
Australian Ecology Research Award (AERA) 2020. Australian Ecology Research Award
Senior Editor, Cambridge University Press Journal Prisms: Extinction 2021- Cambridge Prisms Extinction
Member of the ARC College of Experts 2019-2021
Associate Editor of Methods in Ecology and Evolution 2013-
Associate Editor of Proceedings of the Royal Society of London Series B 2015-2021.
Media:
The Conversation AMTC checklist of Australian mammals
How the AMTC is contributing to conservation
The Conversation evolution of semelparity in male Antechinus
Works
Search Professor Diana Fisher’s works on UQ eSpace
2016
Journal Article
Introduced predators and habitat structure influence range contraction of an endangered native predator, the northern quoll
Hernandez-Santin, Lorna, Goldizen, Anne W. and Fisher, Diana O. (2016). Introduced predators and habitat structure influence range contraction of an endangered native predator, the northern quoll. Biological Conservation, 203, 160-167. doi: 10.1016/j.biocon.2016.09.023
2016
Book
Solomon Islands forest life: information on biology and management of forest resources
Lavery, Tyrone, Pikacha, Patrick and Fisher, Diana (2016). Solomon Islands forest life: information on biology and management of forest resources. Brisbane, Australia: The University of Queensland.
2016
Book Chapter
The bridled nailtail wallaby
Fisher, D. O. (2016). The bridled nailtail wallaby. A fragile balance: the extraordinary story of Australian marsupials. (pp. 21-22) edited by Dickman, C. R.. Sydney, NSW Australia: Australian Geographic.
2015
Journal Article
Correlates of recent declines of rodents in northern and southern Australia: habitat structure is critical
Lawes, Michael J., Fisher, Diana O., Johnson, Chris N., Blomberg, Simon P., Frank, Anke S. K., Fritz, Susanne A., McCallum, Hamish, VanDerWal, Jeremy, Abbott, Brett N., Legge, Sarah, Letnic, Mike, Thomas, Colette R., Thurgate, Nikki, Fisher, Alaric, Gordon, Iain J. and Kutt, Alex (2015). Correlates of recent declines of rodents in northern and southern Australia: habitat structure is critical. PloS One, 10 (6) e0130626, 1-17. doi: 10.1371/journal.pone.0130626
2015
Journal Article
The Evolution of Relative Brain Size in Marsupials Is Energetically Constrained but Not Driven by Behavioral Complexity
Weisbecker, Vera, Blomberg, Simon, Goldizen, Anne W, Brown, Meredeth and Fisher, Diana (2015). The Evolution of Relative Brain Size in Marsupials Is Energetically Constrained but Not Driven by Behavioral Complexity. Brain, Behavior and Evolution, 85 (2), 125-135. doi: 10.1159/000377666
2015
Journal Article
Response to commentary by Woinarski (Critical-weight-range marsupials in northern Australia are declining: a commentary on Fisher et al. (2014) ‘The current decline of tropical marsupials in Australia: is history repeating?’)
Fisher, Diana O., Johnson,Chris N., Lawes, Michael J., Fritz, Susanne A., McCallum, Hamish, Blomberg, Simon P., VanDerWal, Jeremy, Abbott, Brett, Frank, Anke, Legge, Sarah, Letnic, Mike, Thomas, Colette R., Fisher, Alaric, Gordon, Iain J. and Kutt, Alex (2015). Response to commentary by Woinarski (Critical-weight-range marsupials in northern Australia are declining: a commentary on Fisher et al. (2014) ‘The current decline of tropical marsupials in Australia: is history repeating?’). Global Ecology and Biogeography, 24 (1), 123-125. doi: 10.1111/geb.12252
2015
Journal Article
Transdisciplinary synthesis for ecosystem science, policy and management: the Australian experience
Lynch, A. J. J., Thackway, R., Specht, A., Beggs, P. J., Brisbane, S., Burns, E. L., Byrne, M., Capon, S. J., Casanova, M. T., Clarke, P. A., Davies, J. M., Dovers, S., Dwyer, R. G., Ens, E., Fisher, D. O., Flanigan, M., Garnier, E., Guru, S. M., Kilminster, K., Locke, J., Mac Nally, R., McMahon, K. M., Mitchell, P. J., Pierson, J. C., Rodgers, E. M., Russell-Smith, J., Udy, J. and Waycott, M. (2015). Transdisciplinary synthesis for ecosystem science, policy and management: the Australian experience. Science of the Total Environment, 534, 173-184. doi: 10.1016/j.scitotenv.2015.04.100
2015
Journal Article
Diversity, extinction, and threat status in Lagomorphs
Verde Arregoitia, Luis D., Leach, Katie, Reid, Neil and Fisher, Diana O. (2015). Diversity, extinction, and threat status in Lagomorphs. Ecography, 38 (11), 1155-1165. doi: 10.1111/ecog.01063
2014
Journal Article
Common species affects the utility of non-invasive genetic monitoring of a cryptic endangered mammal: the bridled nailtail wallaby
Nuske, Susan, Fisher, Diana and Seddon, Jennifer (2014). Common species affects the utility of non-invasive genetic monitoring of a cryptic endangered mammal: the bridled nailtail wallaby. Austral Ecology, 39 (6), 633-642. doi: 10.1111/aec.12124
2014
Journal Article
The current decline of tropical marsupials in Australia: Is history repeating?
Fisher, Diana O., Johnson, Chris N., Lawes, Michael J., Fritz, Susanne A., Mccallum, Hamish, Blomberg, Simon P., Vanderwal, Jeremy, Abbott, Brett, Frank, Anke, Legge, Sarah, Letnic, Mike, Thomas, Colette R., Fisher, Alaric, Gordon, Iain J. and Kutt, Alex (2014). The current decline of tropical marsupials in Australia: Is history repeating?. Global Ecology and Biogeography, 23 (2), 181-190. doi: 10.1111/geb.12088
2013
Journal Article
Phylogenetic correlates of extinction risk in mammals: species in older lineages are not at greater risk
Arregoitia, Luis Darcy Verde, Blomberg, Simon P. and Fisher, Diana O. (2013). Phylogenetic correlates of extinction risk in mammals: species in older lineages are not at greater risk. Proceedings of the Royal Society B: Biological Sciences, 280 (1765) 20131092, 20131092.1-20131092 .7. doi: 10.1098/rspb.2013.1092
2013
Journal Article
Assessing the vulnerability of an assemblage of subtropical rainforest vertebrate species to climate change in south-east Queensland
Hagger, Valerie, Fisher, Diana, Schmidt, Susanne and Blomberg, Simon (2013). Assessing the vulnerability of an assemblage of subtropical rainforest vertebrate species to climate change in south-east Queensland. Austral Ecology, 38 (4), 465-475. doi: 10.1111/j.1442-9993.2012.02437.x
2013
Journal Article
Brave new green world - Consequences of a carbon economy for the conservation of Australian biodiversity
Bradshaw, Corey J. A., Bowman, David M. J. S., Bond, Nick R., Murphy, Brett P., Moore, Andrew D., Fordham, Damien A., Thackway, Richard, Lawes, Michael J., McCallum, Hamish, Gregory, Stephen D., Dalal, Ram C., Boer, Matthias M., Lynch, A. Jasmyn J., Bradstock, Ross A., Brook, Barry W., Henry, Beverley K., Hunt, Leigh P., Fisher, Diana O., Hunter, David, Johnson, Christopher N., Keith, David A., Lefroy, Edward C., Penman, Trent D., Meyer, Wayne S., Thomson, James R., Thornton, Craig M., VanDerWal, Jeremy, Williams, Richard J., Keniger, Lucy and Specht, Alison (2013). Brave new green world - Consequences of a carbon economy for the conservation of Australian biodiversity. Biological Conservation, 161, 71-90. doi: 10.1016/j.biocon.2013.02.012
2013
Journal Article
Higher extinction rates of dasyurids on Australo-Papuan continental shelf islands and the zoogeography of New Guinea mammals
Lavery, Tyrone H., Fisher, Diana O., Flannery, Tim F. and Leung, Luke K-P (2013). Higher extinction rates of dasyurids on Australo-Papuan continental shelf islands and the zoogeography of New Guinea mammals. Journal of Biogeography, 40 (4), 747-758. doi: 10.1111/jbi.12072
2013
Journal Article
An improved body mass dataset for the study of marsupial brain size evolution
Weisbecker, Vera, Ashwell, Ken and Fisher, Diana (2013). An improved body mass dataset for the study of marsupial brain size evolution. Brain Behavior and Evolution, 82 (2), 81-82. doi: 10.1159/000348647
2012
Journal Article
Establishment of an endangered species on a private nature refuge: What can we learn from reintroductions of the bridled nailtail wallaby Onychogalea fraenata?
Kingsley, Lisa, Goldizen, Anne and Fisher, Diana O. (2012). Establishment of an endangered species on a private nature refuge: What can we learn from reintroductions of the bridled nailtail wallaby Onychogalea fraenata?. Oryx, 46 (2), 240-248. doi: 10.1017/S0030605311000652
2012
Journal Article
Inferring extinction of mammals from sighting records, threats, and biological traits
Fisher, Diana O. and Blomberg, Simon P. (2012). Inferring extinction of mammals from sighting records, threats, and biological traits. Conservation Biology, 26 (1), 57-67. doi: 10.1111/j.1523-1739.2011.01797.x
2012
Journal Article
Dingoes affect activity of feral cats, but do not exclude them from the habitat of an endangered macropod
Wang, Yiwei and Fisher, Diana O. (2012). Dingoes affect activity of feral cats, but do not exclude them from the habitat of an endangered macropod. Wildlife Research, 39 (7), 611-620. doi: 10.1071/WR11210
2011
Journal Article
Trajectories from extinction: Where are missing mammals rediscovered?
Fisher, Diana O. (2011). Trajectories from extinction: Where are missing mammals rediscovered?. Global Ecology and Biogeography, 20 (3), 415-425. doi: 10.1111/j.1466-8238.2010.00624.x
2011
Journal Article
Cost, effort and outcome of mammal rediscovery : Neglect of small species
Fisher, Diana O. (2011). Cost, effort and outcome of mammal rediscovery : Neglect of small species. Biological Conservation, 144 (5), 1712-1718. doi: 10.1016/j.biocon.2011.03.005
Funding
Current funding
Supervision
Availability
- Associate Professor Diana Fisher is:
- Available for supervision
Looking for a supervisor? Read our advice on how to choose a supervisor.
Available projects
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Lag time between invasive predator arrival and native prey extinction- Red foxes and Australian mammals
The red fox Vulpes vulpes is likely to have been responsible for many of the >30 mammal species extinctions on mainland Australia between the 1860s and 1950s, and the range decline (population loss) of about 40% of surviving mammal species. Medium-sized mammals declined the most and are the preferred prey size of foxes. Evidence from museum collectors and expeditioners of European descent, and First Nations accounts suggest rapid decline and local extinction of susceptible native mammal species as the fox encountered them in its spread from its introduction site in Victoria northwards and westwards. For example, in early 20th century administrative districts in New South Wales, a detailed study of bettong and fox records showed that bettongs disappeared within five years of fox arrival in each district (Short 1998). A set of mammals on the Nullabor plain including a bettong, a bandicoot and a species of mulgara went extinct in the 1920s when the fox reached this region of WA (Newman-Martin et al. 2025). A recent analysis by PhD student Natalya Maitz in my group found that fox density predicted loss of brush-tailed rock wallaby populations in eastern Australia. Studies in 2018 and 2025 provide detailed coordinates and dated records of the trajectory of fox invasion. I have a database of coordinates and dated records of mammal decline trajectories. This project would analyse the mean and variability of the lag time between fox arrival and population loss of Australian mainland mammals that have declined, and test correlates of this lag time (body size, climate zone, phylogeny etc).
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Identifying causes of initial bias to improve the Threatened Species Index
Overall Threatened Species Index (TSX) curves and individual time series and taxa show a glitch in the first two or three years- the curve nearly always drops or rises before it settles into a more consistent trajectory (https://tsx.org.au/). This project would test the potential reasons for this. These glitches might be due to a sampling bias artefact related to the choice of initial sampling site. Many studies have addressed spatial bias, such as surveying mainly near roads. Few studies have addressed bias that comes from sampling at certain times in the trajectory of a fluctuating population. Over-sampling of one phase of a fluctuating population (e.g. at a time and place of maximum abundance) is demographic sampling bias. Demographic sampling bias comes from researchers typically choosing thriving populations to study (so that their projects are feasible, or because these are most likely to be detected). In these cases most short term studies will report declines, because fluctuating populations with stable long-term means tend to decline in the short term following a peak (this is 'regression to the mean'). Overestimated declines are also expected if researchers preferentially monitor populations in steady decline and ignore stable ones- this might also be likely in the TSX time series. However, regression to the mean implies that underestimates of decline will ensue if studies focus on recently-declined populations, as these are likely to be in a short term increase phase. This project can use aggregated data to find which curves have which pattern, and understand why this initial glitch occurs. We have access to metadata for the TSX curves and can see which types of studies increase or decrease initially. We might expect that single-species studies might be more likely to initially decline from a peak, and community studies that have not chosen a site based on single species abundance might not show this pattern, as the site was not chosen based on that species. Some researchers provided data later than the start of a long-term study, and some fro the start. Birds and mammals would be good data sets to test this.
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Projects on life history evolution including - sexual selection in animals with male-only semelparity
An analysis in this paper https://www.pnas.org/doi/10.1073/pnas.1310691110 tested if semelparous marsupials (that reproduce once in a lifetime) have larger testes and longer mating duration than iteroparous marsupials in the same families (that reproduce repeatedly). They did- this is evidence that intense post-mating male competition is a component of the evolution of life history in these taxa. All other animals with male-only semelparity are arthropods. This project would analyse species in Families of ants, bees, mantids and spiders that contain some species with male-only semelparity, to test if greater semelparity (fewer males surviving after mating) is associated with indices of higher male reproductive investment in sperm volume and mate guarding, that indicate intense sperm competition. This project would involve 1) measuring body parts of museum specimens (pedipalp size and body size) as well as specimens of insects and spiders that you collect in the field (pedipalp size, body size, testes size of mature males / spermatophore volume where available), 2) measuring body parts of digital images of insects and spiders from published sources, 3) using published data on testes size in mature males and the loss of body parts during mating, to calculate male investment in mating (testes size accounting for body size, proportion of body mass lost, time). The main analyses are phylogenetic regressions. This project is part of an ARC grant, there is a PhD student and a postdoc in my group working on other aspects of the evolution and implications of animal semelparity. There would be a co-supervisor who is a specialist in behavioural and evolutionary ecology of spiders and insects.
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Northern bettong demography and conservation
Projectson the population dynamics and ecology of northern bettongs in the Lamb Range are being developed by the recovery team and will be available in future
Supervision history
Current supervision
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Doctor Philosophy
Feral Cat Control for Threatened Mammal Recovery in Central Queensland
Principal Advisor
Other advisors: Dr John Dwyer
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Master Philosophy
Mammal conservation and ecological refuges in FarNorth Queensland
Principal Advisor
Other advisors: Professor Hugh Possingham
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Doctor Philosophy
The ecology and conservation of fishing cats in urban landscapes in Colombo, Sri Lanka
Principal Advisor
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Doctor Philosophy
Strategic conservation of a priority species
Principal Advisor
Other advisors: Professor Hugh Possingham
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Doctor Philosophy
Evolution of semelparity in male animals
Principal Advisor
Other advisors: Dr Simone Blomberg
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Doctor Philosophy
Using Barn Owls to detect Endangered or cryptic species in western Queensland
Associate Advisor
Other advisors: Professor James Watson
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Doctor Philosophy
Modelling the fine-scale behaviour, movement, and habitat use of free-range Koalas (Phascolarctos cinereus) in southeast Queensland to predict and prevent risk of mortality
Associate Advisor
Other advisors: Professor Robbie Wilson
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Doctor Philosophy
An analysis of cheetah (Acinonyx jubatus) population dynamics in its southern African stronghold ofBotswana
Associate Advisor
Other advisors: Dr Berndt Janse Van Rensburg
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Master Philosophy
Non-Invasive Abundance Monitoring of Captive Mala (Lagorchestes hirsutus) Using Proximal Remote Sensing
Associate Advisor
Other advisors: Dr Alina Bialkowski, Dr Lorna Hernandez Santin
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Doctor Philosophy
Optimal running speeds during predator-prey interactions
Associate Advisor
Other advisors: Professor Robbie Wilson
Completed supervision
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2020
Doctor Philosophy
Using native rodents to understand mammalian evolution and shape diversity in Australia
Principal Advisor
Other advisors: Dr Gilbert Price
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2019
Doctor Philosophy
Conservation ecology of Sharman's rock-wallaby (Petrogale sharmani)
Principal Advisor
Other advisors: Professor Hugh Possingham
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2019
Doctor Philosophy
Conservation of Australian insectivorous marsupials: biogeography, macroecology and life history
Principal Advisor
Other advisors: Professor Robbie Wilson
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2018
Doctor Philosophy
Understanding the impact of invasive ants Wasmannia auropunctata on arthropods, and consequences for agriculture in the Solomon Islands
Principal Advisor
Other advisors: Professor Michael Furlong
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2017
Doctor Philosophy
Ecology and predator associations of the northern quoll (Dasyurus hallucatus) in the Pilbara
Principal Advisor
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2016
Doctor Philosophy
Systematics and taxonomy of tube-nosed fruit bats, subfamily Nyctimeninae
Principal Advisor
Other advisors: Dr Lisa Pope
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2015
Doctor Philosophy
Sex allocation, terminal investment and the effects of environmental constraints on maternal investment in subtropical antechinus
Principal Advisor
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2014
Doctor Philosophy
Phylogeny and extinction risk in mammals
Principal Advisor
Other advisors: Dr Simone Blomberg
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2024
Doctor Philosophy
Conservation of mammals in a biodiversity hotspot on Bougainville Island, Papua New Guinea
Associate Advisor
Other advisors: Professor Salit Kark
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2021
Doctor Philosophy
Behavioural and physiological traits of the endangered marsupial, the northern quoll (Dasyurus hallucatus)
Associate Advisor
Other advisors: Professor Robbie Wilson
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2018
Doctor Philosophy
Predicting the movement speeds of animals in natural environments
Associate Advisor
Other advisors: Professor Robbie Wilson
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2017
Doctor Philosophy
Conserving Australia's predator-threatened mammals
Associate Advisor
Other advisors: Professor Richard Fuller
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2014
Doctor Philosophy
The mammals of northern Melanesia: biogeography, speciation and ecology
Associate Advisor
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2013
Doctor Philosophy
Social organisation of a fission-fusion species, the giraffe (Giraffa camelopardalis), in Etosha National Park, Namibia
Associate Advisor
Media
Enquiries
Contact Associate Professor Diana Fisher directly for media enquiries about:
- Antechinuses
- Australian mammal declines
- Australian mammal extinctions
- Bridled nailtail wallabies
- Carnivorous marsupials
- Endangered species
- Extinctions - mammals
- Global extinctions - mammals
- Life history evolution - dasyurids
- Marsupials
- Species rediscovery
- Wallabies
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