Water and soil resource response to past global environmental changes. The abundance and distribution of Earth's water and soil resources are strongly influenced by the spatial and temporal variability of climatic parameters. Thus, there is a need to understand how climate change, whether of natural causes or induced by human activity, impacts fluvial and soil systems. This project will use novel isotopic techniques to study the links between climate variability, chemical weathering, which produ ....Water and soil resource response to past global environmental changes. The abundance and distribution of Earth's water and soil resources are strongly influenced by the spatial and temporal variability of climatic parameters. Thus, there is a need to understand how climate change, whether of natural causes or induced by human activity, impacts fluvial and soil systems. This project will use novel isotopic techniques to study the links between climate variability, chemical weathering, which produces soil, and sediment transport, which affects fluvial systems and water resources. The composition of stable lithium, boron and calcium isotopes, and of radioactive uranium-series isotopes in sedimentary records will shed new light on our understanding of these processes.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE140100023
Funder
Australian Research Council
Funding Amount
$360,000.00
Summary
Innovative isotopic techniques to study the response of soil and water resources to modern and past climate change. Innovative isotopic techniques to study the response of soil and water resources to modern and past climate change: The emergence of innovative isotopic tools has provided unprecedented opportunities to improve our understanding of the processes that shape the earth's resources and environment. The plasma-source mass spectrometer will be dedicated to applying these techniques to ea ....Innovative isotopic techniques to study the response of soil and water resources to modern and past climate change. Innovative isotopic techniques to study the response of soil and water resources to modern and past climate change: The emergence of innovative isotopic tools has provided unprecedented opportunities to improve our understanding of the processes that shape the earth's resources and environment. The plasma-source mass spectrometer will be dedicated to applying these techniques to earth surface processes, and establishing unique capabilities to decipher how soil and water resources respond to modern and past climate change in Australia.Read moreRead less
The timescales of Earth-system processes. This project will advance our understanding of the timescales of Earth processes using short-lived (22 to 380,000 years) isotopes. The results will provide better constraints on the timescales of magmatic processes and frequency of large-scale eruptions for volcanic hazard mitigation and also soil production rates for landscape erosion studies.
Shallow water carbonate sediment dissolution in the global carbon cycle. Carbonate sediment dissolution is a globally significant process, but poorly understood in shallow marine waters. This project will determine whether the combined effect of organic matter, ocean acidification and pore water flow in shallow water carbonate sediments increases the release of calcium and alkalinity to the ocean. This project is significant because this release has not previously been accounted for and may lead ....Shallow water carbonate sediment dissolution in the global carbon cycle. Carbonate sediment dissolution is a globally significant process, but poorly understood in shallow marine waters. This project will determine whether the combined effect of organic matter, ocean acidification and pore water flow in shallow water carbonate sediments increases the release of calcium and alkalinity to the ocean. This project is significant because this release has not previously been accounted for and may lead to an additional uptake of atmospheric carbon dioxide into the global ocean, maybe some additional buffering against ocean acidification, but unfortunately, maybe also a loss of carbonate ecosystems. The outcomes of this project will make a significant contribution to our understanding of the global carbon cycle.
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Dissolution of CaCO3 in sediments in an acidifying ocean. Dissolution of calcium carbonate (CaCO3) in sediments in the context of ocean acidification is poorly understood. This project will use in situ advective benthic chamber incubations and experimental manipulations under future ocean acidification scenarios to determine the controls on the dissolution of CaCO3 in sediments. This project is significant because changes in the dissolution of CaCO3 in sediments in an acidifying ocean are at lea ....Dissolution of CaCO3 in sediments in an acidifying ocean. Dissolution of calcium carbonate (CaCO3) in sediments in the context of ocean acidification is poorly understood. This project will use in situ advective benthic chamber incubations and experimental manipulations under future ocean acidification scenarios to determine the controls on the dissolution of CaCO3 in sediments. This project is significant because changes in the dissolution of CaCO3 in sediments in an acidifying ocean are at least as important, and potentially more important, than calcification to the future accretion and survival of carbonate ecosystems. It is expected that outcomes of this project will significantly advance our understanding of the drivers of the dissolution of CaCO3 in sediments and the functioning of globally important carbonate ecosystems.Read moreRead less
Transforming residues from meat processing into engineered soil amendments. The aim of this project is to transform organic residues from meat processing into agricultural soil amendments that actively improve nutrient retention and reduce nitrous oxide (a potent greenhouse gas) emissions. Current disposal and treatment options for meat processing residues are economically and environmentally unsustainable. In this research, a modified hydrothermal carbonisation process will be developed to tran ....Transforming residues from meat processing into engineered soil amendments. The aim of this project is to transform organic residues from meat processing into agricultural soil amendments that actively improve nutrient retention and reduce nitrous oxide (a potent greenhouse gas) emissions. Current disposal and treatment options for meat processing residues are economically and environmentally unsustainable. In this research, a modified hydrothermal carbonisation process will be developed to transform organic residues into novel hydrochars. The influence of these hydrochars on soil nutrient retention and nitrous oxide production will then be assessed using stable isotope tracing, genetic characterisation, and numerical modeling. The project will reduce the economic and environmental costs of organic waste disposal.Read moreRead less
Monsoons and migrations: Quaternary climates, landscapes and human prehistory of the Arabian peninsula and the Indian subcontinent. By providing important new data on the initial dispersal of Homo sapiens from Africa to Australia via Arabia and India, this project will improve our knowledge of the time-depth of cultural connections between indigenous Australians and other societies. It will provide a long-term perspective on the impact of climate change on hunter-gatherer communities, and will c ....Monsoons and migrations: Quaternary climates, landscapes and human prehistory of the Arabian peninsula and the Indian subcontinent. By providing important new data on the initial dispersal of Homo sapiens from Africa to Australia via Arabia and India, this project will improve our knowledge of the time-depth of cultural connections between indigenous Australians and other societies. It will provide a long-term perspective on the impact of climate change on hunter-gatherer communities, and will contribute to NRP Safeguarding Australia by increasing our understanding of cultures in Arabia and India. Technical advances made in this study will benefit researchers worldwide, increase capacity for commercial services, and enhance Australia's international standing in the geosciences. We will also train high-quality research students and create new collaborative initiatives.Read moreRead less
Unravelling how aquatic coastal networks regulate nitrogen removal . The aim of this project is to determine the nitrogen removal pathways of the coastal zone using a number of innovative field and modelling approaches. Little is known about how the complex coastal landscape controls trade-offs that maximise nitrogen removal but minimise nitrous oxide (a potent greenhouse gas) emissions. The outcomes of this study will significantly advance our understanding of the coastal zone in regional and g ....Unravelling how aquatic coastal networks regulate nitrogen removal . The aim of this project is to determine the nitrogen removal pathways of the coastal zone using a number of innovative field and modelling approaches. Little is known about how the complex coastal landscape controls trade-offs that maximise nitrogen removal but minimise nitrous oxide (a potent greenhouse gas) emissions. The outcomes of this study will significantly advance our understanding of the coastal zone in regional and global nitrogen budgets. This will provide significant benefits such as a new science-based quantitative framework to facilitate best practice management to reduce terrestrial nitrogen loads and associated downstream impacts such as eutrophication, and reduce nitrous oxide emissions and associated global warming.
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Antimony geochemistry and Earth's dynamic near-surface iron cycle. This project aims to advance our fundamental understanding on the geochemistry of antimony – a critical mineral resource and environmental pollutant of growing concern. This will be achieved by pioneering an innovative combination of advanced synchrotron-based tools and sophisticated isotopic approaches to unravel important interactions between antimony geochemistry and the iron cycle in soils, sediments and aquatic systems. The ....Antimony geochemistry and Earth's dynamic near-surface iron cycle. This project aims to advance our fundamental understanding on the geochemistry of antimony – a critical mineral resource and environmental pollutant of growing concern. This will be achieved by pioneering an innovative combination of advanced synchrotron-based tools and sophisticated isotopic approaches to unravel important interactions between antimony geochemistry and the iron cycle in soils, sediments and aquatic systems. The expected outcomes will provide novel insights into refined strategies to manipulate coupling between antimony mobility and iron cycling for improved rehabilitation of degraded landscapes, safe disposal of hazardous wastes and sustainable exploitation of Australia’s valuable antimony reserves.Read moreRead less
Out of Africa and into Australia: robust chronologies for turning points in modern human evolution and dispersal. This project will yield important new data on the timing of major turning points in human evolution and the human colonisation of Australia. This will improve our knowledge of Aboriginal cultural heritage and provide a long-term perspective on human/environment interactions to help forecast future impacts of human disruption of the Australian ecosystem (Environmentally Sustainable Au ....Out of Africa and into Australia: robust chronologies for turning points in modern human evolution and dispersal. This project will yield important new data on the timing of major turning points in human evolution and the human colonisation of Australia. This will improve our knowledge of Aboriginal cultural heritage and provide a long-term perspective on human/environment interactions to help forecast future impacts of human disruption of the Australian ecosystem (Environmentally Sustainable Australia NRP). Modern dating techniques underpin many archaeological and environmental projects, so the advances made in this study will benefit researchers worldwide, increase capacity for commercial services, and enhance Australia's international standing in geochronology. We will also generate high-quality research students and new collaborative initiatives.Read moreRead less