The pharmacokinetics of plant secondary metabolites and their effects on feeding in the brushtail possum. Plant secondary metabolites (PSMs) are considered to protect against herbivory, although the mechanisms are not well understood. This project will determine how marsupial folivores avoid toxicity when browsing on Eucalyptus leaf. Blood levels of terpenes, phenols and their metabolites will be measured in the brushtail possum while it feeds on a diet of varying PSM content. We expect to be ab ....The pharmacokinetics of plant secondary metabolites and their effects on feeding in the brushtail possum. Plant secondary metabolites (PSMs) are considered to protect against herbivory, although the mechanisms are not well understood. This project will determine how marsupial folivores avoid toxicity when browsing on Eucalyptus leaf. Blood levels of terpenes, phenols and their metabolites will be measured in the brushtail possum while it feeds on a diet of varying PSM content. We expect to be able to show relationships between the ingestion and blood levels of PSMs and feeding behaviour. This will give a greater understanding of the effect of plant toxins on browsing behaviour, enabling improved foraging models and more effective habitat management.Read moreRead less
Unravelling community interactions between mammals and fungi, and the role of mycophagy in mediating biodiversity and driving ecosystem processes. Maintenance of Australia's forest biodiversity and healthy forested ecosystems are of national importance. Mammal species that are key to dispersing beneficial fungi in our forests have suffered greatest declines in the past, and further declines may ultimately lead to ecosystem collapse. My research seeks to unravel community relationship between ma ....Unravelling community interactions between mammals and fungi, and the role of mycophagy in mediating biodiversity and driving ecosystem processes. Maintenance of Australia's forest biodiversity and healthy forested ecosystems are of national importance. Mammal species that are key to dispersing beneficial fungi in our forests have suffered greatest declines in the past, and further declines may ultimately lead to ecosystem collapse. My research seeks to unravel community relationship between mammals and fungi, and how interactions within and between these groups maintain diverse communities. My results will enable forest managers to protect forest biodiversity from current and future threats and to restore degraded ecosystems. Through training of early career ecologists, the research also represents a tangible benefit to Australian science.Read moreRead less
Economics of Conserving Australian Tropical Wildlife: An Analysis of the Role of Economic Valuation, Property Rights and Commercialisation. Australian tropical native animals are selected to analyse economic valuation (use and non-use valuation) of wildlife species and to assess systematically the role of property rights and commercialisation in conservation. The project will (1) reduce bias of Australian economic studies in favour of temperate species; (2) answer several unresolved questions ra ....Economics of Conserving Australian Tropical Wildlife: An Analysis of the Role of Economic Valuation, Property Rights and Commercialisation. Australian tropical native animals are selected to analyse economic valuation (use and non-use valuation) of wildlife species and to assess systematically the role of property rights and commercialisation in conservation. The project will (1) reduce bias of Australian economic studies in favour of temperate species; (2) answer several unresolved questions raised in the Parlimentary Report on Commercial Utilisation of Australian Wildlife; (3) advance economic theory (e.g. relating to dynamic influences on economic valuation) and provide new insights into property rights making use of empirical and experimental results, and (4) thereby contribute to public policy decision-making.Read moreRead less
Setting and achieving realistic restoration goals in human-dominated ecosystems. Federal and state programs and community and NGO activities increasingly focus on ecosystem restoration as a tool in conservation and natural resource management. Clearer understanding of ecosystem dynamics and better articulation of realistic restoration goals can lead to much improved restoration success and better investment of government and private funds. This project will provide a better understanding of ecos ....Setting and achieving realistic restoration goals in human-dominated ecosystems. Federal and state programs and community and NGO activities increasingly focus on ecosystem restoration as a tool in conservation and natural resource management. Clearer understanding of ecosystem dynamics and better articulation of realistic restoration goals can lead to much improved restoration success and better investment of government and private funds. This project will provide a better understanding of ecosystem dynamics both under current conditions and also as influenced by future environmental changes. The contribution to the theoretical and conceptual development of the field of restoration ecology will increase the profile of Australian science and enhance our reputation as leaders in this field. Read moreRead less
Dynamic networks in a patchy landscape: will species interactions adjust to increased climatic extremes? This project addresses pressing questions on how increased climatic extremes will affect species diversity in arid Australia, building on the longest ecological dataset available for the continent's vast but fragile inland landscapes. Our tests of key ideas about strong interactions among species, their role in building resilient communities and conserving biodiversity, will generate consider ....Dynamic networks in a patchy landscape: will species interactions adjust to increased climatic extremes? This project addresses pressing questions on how increased climatic extremes will affect species diversity in arid Australia, building on the longest ecological dataset available for the continent's vast but fragile inland landscapes. Our tests of key ideas about strong interactions among species, their role in building resilient communities and conserving biodiversity, will generate considerable international interest, while our focus on interactions of species at water sources will address knowledge gaps to inform best practice in managing converted pastoral lands. The results will contribute to retaining healthy functioning ecosystems, and the vital production systems they support, as the global climate changes.Read moreRead less
Stable isotopes in marsupials: reconstruction of environmental change in Australia. This project will establish the application of stable isotope analysis of marsupial bones for the reconstruction of past environments, a key area to advance Australian prehistory. On a continental scale, it will establish the relationship between stable isotopes (C, O, N) in bones and environmental factors (e.g., plant distribution, humidity, temperature); on a local scale, the relationship between stable isotope ....Stable isotopes in marsupials: reconstruction of environmental change in Australia. This project will establish the application of stable isotope analysis of marsupial bones for the reconstruction of past environments, a key area to advance Australian prehistory. On a continental scale, it will establish the relationship between stable isotopes (C, O, N) in bones and environmental factors (e.g., plant distribution, humidity, temperature); on a local scale, the relationship between stable isotopes and aboriginal land management. The project will provide a late Quaternary environmental reconstruction along a transect from the coastal regions in South Australia into the Lake Eyre Basin and explore the methodological limitations at sites with long fossil records.Read moreRead less
General theory for eradicating multiple invasive species from threatened island ecosystems. Invasive species threaten many of Australia's unique flora and fauna. Our island ecosystems have evolved in the absence of mammalian predators, and are therefore particularly vulnerable. When both cats and rats invade an island, they can quickly decimate the populations of native species, particularly seabirds, and threaten them with extinction. Unfortunately, poorly planned eradication of these invasive ....General theory for eradicating multiple invasive species from threatened island ecosystems. Invasive species threaten many of Australia's unique flora and fauna. Our island ecosystems have evolved in the absence of mammalian predators, and are therefore particularly vulnerable. When both cats and rats invade an island, they can quickly decimate the populations of native species, particularly seabirds, and threaten them with extinction. Unfortunately, poorly planned eradication of these invasive species can destabilise the complex island ecosystems, further endangering the native species. The results of this project will help conservation managers to plan eradication strategies that cost-effectively eradicate populations of two introduced species, without threatening native wildlife.Read moreRead less
Modelling species distributions for a changing world. Understanding the impacts of climate change and invasive species on the distribution and persistence of species is an issue of global and national significance and concern. This project will provide tools essential for the effective management of Australia's ecosystems by delivering clear guidelines and practical methods that will substantially improve the modelling of future species distributions.
Optimal management of complex ecological systems. Natural systems are inherently complex and difficult to predict. This complexity means that efficient management strategies are often uncertain, and resource managers have few theories or rules on which to base their decisions. We will integrate the existing theories and principles of conservation biology with decision-making tools and theory used in statistics, economics, control theory, engineering and mathematics. We will use novel methods to ....Optimal management of complex ecological systems. Natural systems are inherently complex and difficult to predict. This complexity means that efficient management strategies are often uncertain, and resource managers have few theories or rules on which to base their decisions. We will integrate the existing theories and principles of conservation biology with decision-making tools and theory used in statistics, economics, control theory, engineering and mathematics. We will use novel methods to investigate the reliability of different management decisions that are made in the face of uncertainty and involve learning. Our aim is to discover a general theory for a new branch of conservation biology: applied theoretical conservation ecology.Read moreRead less
New models for predicting species' distributions. This project will deliver new and more robust methods for generating the information that underpins sound conservation and resource management decisions, with particular focus on new statistical techniques to predict species' distributions. Results will be relevant to a wide range of applications including management of rare and/or threatened species and ecosystems, setting realistic targets for species and ecosystem restoration, improved managem ....New models for predicting species' distributions. This project will deliver new and more robust methods for generating the information that underpins sound conservation and resource management decisions, with particular focus on new statistical techniques to predict species' distributions. Results will be relevant to a wide range of applications including management of rare and/or threatened species and ecosystems, setting realistic targets for species and ecosystem restoration, improved management of pest species, and sustainable harvesting of species. Emphasis will be placed on transfer of knowledge to users, fostering the development of new skills among Australian environmental and conservation managers, and contributing to the sustainable use of our biodiversity.Read moreRead less