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Unravelling the history of nitrogen cycling within the central Great Barrier Reef. This project aims to use coral skeleton geochemical analysis to establish if, when, and how nitrogen cycling changed along the central inshore region of the Great Barrier Reef (GBR) lagoon. Increasing anthropogenic nitrogen discharge to coastal waters could drive ecosystem decline in the GBR, one of Australia’s most sensitive and economically valuable natural environments. However, the full effect of anthropogenic ....Unravelling the history of nitrogen cycling within the central Great Barrier Reef. This project aims to use coral skeleton geochemical analysis to establish if, when, and how nitrogen cycling changed along the central inshore region of the Great Barrier Reef (GBR) lagoon. Increasing anthropogenic nitrogen discharge to coastal waters could drive ecosystem decline in the GBR, one of Australia’s most sensitive and economically valuable natural environments. However, the full effect of anthropogenic nitrogen is unclear due to a lack of long, continuous records. This project will unravel the history of nitrogen cycling in the GBR since the mid-1800s, knowledge crucial for managing this reef system.Read moreRead less
Effects of uptake of carbon and nutrients (nitrogen, phosphorous and silicon) on pH among phytoplankton species: implications for ocean acidification feedback mechanisms. Anthropogenic CO2 emission has caused a decrease in the ocean pH, which may affect coral reefs. The project will study two processes, as the feedback mechanisms, which can increase pH in seawater, uptake of additional CO2 by algae directly and stimulated by the human input of nitrogen and phosphorus.
Bubble, Bubble CO2 is the trouble: A Natural Ocean Acidification Experiment in a coral reef setting. Carbon dioxide seep sites expose shallow coral reefs in Papua New Guinea to volcanic carbon dioxide resulting in gradients of seawater ranging from pH 8.0 (normal) to a more acidic pH of 7.5. Some areas of these reefs experience carbon dioxide exposure equivalent to IPCC predictions for 2050 and 2100. This project will reconstruct seawater pH using radiocarbon as a novel tracer of carbon dioxide ....Bubble, Bubble CO2 is the trouble: A Natural Ocean Acidification Experiment in a coral reef setting. Carbon dioxide seep sites expose shallow coral reefs in Papua New Guinea to volcanic carbon dioxide resulting in gradients of seawater ranging from pH 8.0 (normal) to a more acidic pH of 7.5. Some areas of these reefs experience carbon dioxide exposure equivalent to IPCC predictions for 2050 and 2100. This project will reconstruct seawater pH using radiocarbon as a novel tracer of carbon dioxide input at a coral reef site that has been exposed to high carbon dioxide due to volcanic seeps (seep carbon dioxide has no carbon-14) for an unknown period of time (at least many decades, but possibly centuries). These results will help to understand the time it takes to change calcifying organisms into “winners” or “losers” as an analog for Ocean Acidification due to increased atmospheric carbon dioxide input.Read moreRead less
Coupled physical and biogeochemical dynamics on the Australian North West Shelf. Information regarding the natural function of the Australian North West Shelf is urgently required to sustainably manage the often conflicting uses of the region. This project will study the role of ocean processes in driving ocean productivity on the North West Shelf and determine the impact of projected climate variability.
Discovery Early Career Researcher Award - Grant ID: DE220101000
Funder
Australian Research Council
Funding Amount
$418,000.00
Summary
Polymeric materials of tailor-made macrocycles for selective anion capture. This project aims to develop an innovative class of adsorbent materials comprised of macrocycles (large cyclic molecules) tailored to specifically bind toxic anions in water. The project expects to address the key issue of poor selectivity in existing adsorbent materials and generate knowledge in materials chemistry by producing ring-shape anion binding molecules, advancing low-cost synthesis of materials, and providing ....Polymeric materials of tailor-made macrocycles for selective anion capture. This project aims to develop an innovative class of adsorbent materials comprised of macrocycles (large cyclic molecules) tailored to specifically bind toxic anions in water. The project expects to address the key issue of poor selectivity in existing adsorbent materials and generate knowledge in materials chemistry by producing ring-shape anion binding molecules, advancing low-cost synthesis of materials, and providing fundamental insights into anion binding in polymeric materials. Expected outcomes include sensors and adsorbents targeting toxic anions for water quality monitoring and purification. This should provide significant benefits, such as improving water quality and tackling environmental challenges globally and in Australia.Read moreRead less
Microscale insights into ocean-scale processes: microbial behaviour as a driver of ocean biogeochemistry. Microscopic plankton regulate the ocean's chemical cycles, which ultimately support life on earth. However, the ecological interactions driving these processes are poorly understood. This project will use novel approaches to decipher the behaviours of marine microbes, providing a more complete perception of how ocean ecosystems operate and influence climate.
Oyster biomonitor for endocrine disrupting chemicals. Endocrine disrupting chemicals (EDCs) can produce alarming detrimental impacts on the reproduction and survival of aquatic species, though little is presently known in terms of their effect and impacts on sensitive marine invertebrate species. We propose the development and validation of the first marine mollusc as a biomonitor for the detection and impact assessment of estrogenic contaminants in Australian estuarine and marine waterbodies. S ....Oyster biomonitor for endocrine disrupting chemicals. Endocrine disrupting chemicals (EDCs) can produce alarming detrimental impacts on the reproduction and survival of aquatic species, though little is presently known in terms of their effect and impacts on sensitive marine invertebrate species. We propose the development and validation of the first marine mollusc as a biomonitor for the detection and impact assessment of estrogenic contaminants in Australian estuarine and marine waterbodies. Such biomonitors will provide water management agencies with the capability to manage estrogenic effluent discharges and provide the oyster industry with a tool to prevent product contamination, ensuring the continued health and sustainability of our aquatic resources.Read moreRead less
Indian Ocean Climate Change: Ningaloo Reef, a litmus test for the survival of coral reefs. Coral reefs are at the frontline from the effects of rapidly rising levels of carbon dioxide that is causing both global warming and oceans to become more acid-like. Our research program will determine how the survival of one of the World’s most pristine and best preserved coral reefs, Ningaloo Reef, is linked to the response of Australia’s Indian Ocean to climate change. For the first time, we will simula ....Indian Ocean Climate Change: Ningaloo Reef, a litmus test for the survival of coral reefs. Coral reefs are at the frontline from the effects of rapidly rising levels of carbon dioxide that is causing both global warming and oceans to become more acid-like. Our research program will determine how the survival of one of the World’s most pristine and best preserved coral reefs, Ningaloo Reef, is linked to the response of Australia’s Indian Ocean to climate change. For the first time, we will simulate realistic ‘future’ conditions and see how actual coral reef systems respond. This will provide a ‘yardstick’ against which the best-case survival potential of the world’s coral reefs can be assessed, critical for underpinning the urgently needed action to reduce greenhouse gas emissions if we are to ensure the survival of coral reefs.Read moreRead less
Unravelling the cycling of nitrogen along a subtropical freshwater-marine continuum using a multi-isotope, multi-tracer and modelling approach. This project will significantly advance our understanding of the sources, cycling and pathways of nitrogen along a sub-tropical catchment-river-estuary. As such, the findings from this research will have direct implications to the management, rehabilitation and protection of waterways (including biodiversity) in Australia.
Mechanisms of acclimation of coralline algae to ocean acidification. This project aims to investigate the biological and ecological mechanisms by which reef-building coralline algae may have survived past ocean acidification and warming events and may acclimate to future changes. Coralline algae play critical roles in coral reef ecology but are sensitive to human-induced ocean acidification. However, the abundant geological record coincident with past acidification events is inconsistent with th ....Mechanisms of acclimation of coralline algae to ocean acidification. This project aims to investigate the biological and ecological mechanisms by which reef-building coralline algae may have survived past ocean acidification and warming events and may acclimate to future changes. Coralline algae play critical roles in coral reef ecology but are sensitive to human-induced ocean acidification. However, the abundant geological record coincident with past acidification events is inconsistent with their sensitivity to high carbon dioxide. Acclimation and adaptation is therefore possible but in ways we do not yet understand. The project expects to provide insights to the ability of key marine organisms to acclimate to rapid environmental change and provide information critical for the conservation of valuable marine systems.Read moreRead less