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Solar radiation, coral bleaching and climate change. Corals reefs like the Great Barrier Reef (GBR) underpin approximately $2 billion annually in sustainable tourism and fisheries. Warming of Australia's tropical seas, however, has increased mass coral bleaching/mortality and is placing reefs like the GBR at increasing risk. Solar radiation (PAR, UVR) plays an important influence on the biological outcome of thermal stress. Understanding the role of solar radiation is critical if we are to unde ....Solar radiation, coral bleaching and climate change. Corals reefs like the Great Barrier Reef (GBR) underpin approximately $2 billion annually in sustainable tourism and fisheries. Warming of Australia's tropical seas, however, has increased mass coral bleaching/mortality and is placing reefs like the GBR at increasing risk. Solar radiation (PAR, UVR) plays an important influence on the biological outcome of thermal stress. Understanding the role of solar radiation is critical if we are to understand the changes that will occur on coral reefs as temperatures increase. This multidisciplinary international team will define and model the role of solar radiation on thermal stress at local, regional and global scales. Read moreRead less
Uncovering the evolutionary history of Australasian marsupials: combining molecular phylogenetics and ecological inference. Marsupials are symbolic of the uniqueness of Australia's biological systems and there is widespread public interest in their natural history. Yet we know little of the evolutionary mechanisms that have shaped their biodiversity. This is a critical problem when considered in the context of Australian marsupials having suffered the highest extinction rate of any continental m ....Uncovering the evolutionary history of Australasian marsupials: combining molecular phylogenetics and ecological inference. Marsupials are symbolic of the uniqueness of Australia's biological systems and there is widespread public interest in their natural history. Yet we know little of the evolutionary mechanisms that have shaped their biodiversity. This is a critical problem when considered in the context of Australian marsupials having suffered the highest extinction rate of any continental mammal fauna over the past 200 years. This project will make a major contribution to understanding the origins, timescale and ecological nature of Australasian marsupial evolution. In doing so, it will inform conservation strategy, promote Australasian marsupials as a model system for studying faunal coevolution and develop widely applicable bioinformatic tools.Read moreRead less
Fitness in free-living populations in a changing world. We understand very little about the evolutionary and ecological response of populations to periods of rapid environmental change or volatility. New methods raise the possibility dissecting the various causes of change, and their demographic consequences. However, these methods depend on long-term studies of the genealogy, survival and reproductive success of individuals. Data on the iconic superb fairy-wren will be used to establish this ....Fitness in free-living populations in a changing world. We understand very little about the evolutionary and ecological response of populations to periods of rapid environmental change or volatility. New methods raise the possibility dissecting the various causes of change, and their demographic consequences. However, these methods depend on long-term studies of the genealogy, survival and reproductive success of individuals. Data on the iconic superb fairy-wren will be used to establish this species as a model for the study of climate change, and the extent to which living in social groups helps or hinders evolutionary response to such change.Read moreRead less
Toxic cyanobacterial blooms in a carbon dioxide (CO2)-rich world: assessing the impacts of global climate change. Cyanobacterial blooms in Australia cost the country over $150 million every year because of their impacts on water quality and animal and human health. The frequency, distribution and intensity of these blooms are all expected to increase worldwide as global climate change impacts increase over the next century. This project will provide much needed information of the severity of imp ....Toxic cyanobacterial blooms in a carbon dioxide (CO2)-rich world: assessing the impacts of global climate change. Cyanobacterial blooms in Australia cost the country over $150 million every year because of their impacts on water quality and animal and human health. The frequency, distribution and intensity of these blooms are all expected to increase worldwide as global climate change impacts increase over the next century. This project will provide much needed information of the severity of impacts on cyanobacteria commonly causing blooms in Australian aquatic ecosystems. This information will be important to authorities responsible for managing our precious water resources.Read moreRead less
Plant-herbivore interactions: a model two-species system from northern Australia. The proposed research addresses a critical aspect of magpie goose ecology. Understanding the interaction between the birds and the bulbs is critical to respond effectively to past and threatened losses of important sedge habitats to sea level rise. This knowledge will inform management of the Kakadu World Heritage Site and an iconic waterfowl of great cultural and economic significance. In addition to their importa ....Plant-herbivore interactions: a model two-species system from northern Australia. The proposed research addresses a critical aspect of magpie goose ecology. Understanding the interaction between the birds and the bulbs is critical to respond effectively to past and threatened losses of important sedge habitats to sea level rise. This knowledge will inform management of the Kakadu World Heritage Site and an iconic waterfowl of great cultural and economic significance. In addition to their importance as a Gondwanan relic and sole member of the Family Anseranatidae, the species is an important food-source for Aboriginal people, and tourists travel to the Kakadu wetlands to witness huge dry season congregations.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989072
Funder
Australian Research Council
Funding Amount
$100,000.00
Summary
High throughput nitrogen analysis for ecological studies. Australian environments are unproductive partly because they contain little Nitrogen (N) and changes in atmospheric CO2 will exacerbate this. Furthermore, animals cannot extract all the N from the plants they eat. An assay has been developed that measures how much they can extract (available N) and it is intended to use it to measure habitat quality and the effects of climate change over large tracts of land. This requires thousands of ....High throughput nitrogen analysis for ecological studies. Australian environments are unproductive partly because they contain little Nitrogen (N) and changes in atmospheric CO2 will exacerbate this. Furthermore, animals cannot extract all the N from the plants they eat. An assay has been developed that measures how much they can extract (available N) and it is intended to use it to measure habitat quality and the effects of climate change over large tracts of land. This requires thousands of N analyses. The equipment we are requesting - a LECO combustion analyser, allows us to analyse samples quickly and safely and uses fewer chemicals and much less water than do traditional machines.Read moreRead less
Re-evaluating the role of tannins in Australian forest ecosystems. As atmospheric CO2 concentrations rise, eucalypts will respond by decreasing the amount of protein in the leaves and increasing the concentrations of toxins called tannins. Together this will have the effect of making the leaves harder for herbivores to eat and slower to break down on the forest floor. We have developed a new way of measuring these effects and will use it to show which eucalypt communities climate change will mo ....Re-evaluating the role of tannins in Australian forest ecosystems. As atmospheric CO2 concentrations rise, eucalypts will respond by decreasing the amount of protein in the leaves and increasing the concentrations of toxins called tannins. Together this will have the effect of making the leaves harder for herbivores to eat and slower to break down on the forest floor. We have developed a new way of measuring these effects and will use it to show which eucalypt communities climate change will most affect and so which forests will become less able to support fauna. Apart from contributing to the better management of Australian forests, this project also enhances the National Carbon Accounting System by measuring how tannins influence litter decomposition and explaining the link with leaf chemistry.Read moreRead less
Stress, virulence and bacterial disease in temperate seaweeds: the rise of the microbes. Climate change is predicted to increase the spread and virulence of pathogens, and decrease the resistance to disease via temperature stress on the hosts. Combined with other human impacts (higher nutrients, pollution), we may be facing a major rise in the effect of disease on natural communities. However, these effects are largely unstudied. We will investigate the impact of marine pathogens on kelps and ....Stress, virulence and bacterial disease in temperate seaweeds: the rise of the microbes. Climate change is predicted to increase the spread and virulence of pathogens, and decrease the resistance to disease via temperature stress on the hosts. Combined with other human impacts (higher nutrients, pollution), we may be facing a major rise in the effect of disease on natural communities. However, these effects are largely unstudied. We will investigate the impact of marine pathogens on kelps and other seaweeds when they are stressed by temperature, elevated nutrients or other anthropogenic stressors. Kelp are the 'trees of the oceans', the organisms responsible for creating much of the habitat that fishes and other organisms live in. The loss of kelp forests due to disease would radically change these environments.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775739
Funder
Australian Research Council
Funding Amount
$135,000.00
Summary
Environmental Research Isotope Ratio Mass Spectrometer (ERIRMS). The projects supported by this facility are esential to: sustainable management of Sydney's surface and groundwater; understanding food webs and trophic interactions in Sydney Harbour and elsewhere on the eastern seaboard; developing predictive models for the impacts of climate change on Australia's forests, especially carbon sequestration and water yield; understanding the trade-offs involved in managing fire risks through prescr ....Environmental Research Isotope Ratio Mass Spectrometer (ERIRMS). The projects supported by this facility are esential to: sustainable management of Sydney's surface and groundwater; understanding food webs and trophic interactions in Sydney Harbour and elsewhere on the eastern seaboard; developing predictive models for the impacts of climate change on Australia's forests, especially carbon sequestration and water yield; understanding the trade-offs involved in managing fire risks through prescribed burning, especially trade-offs involving carbon and water; and understanding and predicting air quality and the effects of emissions from cars, industry, fires and natural sources.
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Change ecology - gaining broad-scale, timely biodiversity knowledge in a time of uncertainty. Australians are confronted daily with the consequences of changes wrought by human over-exploitation of natural resources. Our capacity to track and respond to change is very limited and slow. Thus, rapid deterioration of ecologically important aspects is detected late and is not reflective of the general state because knowledge is derived from small-scale measurements that are difficult to generalize. ....Change ecology - gaining broad-scale, timely biodiversity knowledge in a time of uncertainty. Australians are confronted daily with the consequences of changes wrought by human over-exploitation of natural resources. Our capacity to track and respond to change is very limited and slow. Thus, rapid deterioration of ecologically important aspects is detected late and is not reflective of the general state because knowledge is derived from small-scale measurements that are difficult to generalize. We will build a capacity for providing large-scale knowledge of vegetation condition and flow-on effects on biodiversity, which also will allow us to make informed assessments of the ecological consequences of some existing (climate change, drying) and imminent (biofuel plantings) drivers of change.Read moreRead less