The paleoenvironmental evolution of Earth and Mars. The project proposes to develop and apply high-resolution isotopic and geochemical techniques to measure the timing and intensity of water-rock interactions at the Earth’s surface throughout the geological past. Water–rock interactions shape the Earth’s landscape, determine the composition of surface and groundwater, produce the soils that sustain life, and buffer the composition of the atmosphere. Ultimately, the project aims to generate a tim ....The paleoenvironmental evolution of Earth and Mars. The project proposes to develop and apply high-resolution isotopic and geochemical techniques to measure the timing and intensity of water-rock interactions at the Earth’s surface throughout the geological past. Water–rock interactions shape the Earth’s landscape, determine the composition of surface and groundwater, produce the soils that sustain life, and buffer the composition of the atmosphere. Ultimately, the project aims to generate a time-calibrated and continuous continental paleoenvironmental record for key sites in the southern hemisphere, spanning from the Mesozoic to the present. Results from this study may allow us to quantify water–rock interactions on Earth, and may also be applicable to investigating the hydrological cycle on Mars.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150100770
Funder
Australian Research Council
Funding Amount
$358,536.00
Summary
Solving the mystery of natural carbon mineralisation in Australian lakes. Some lakes, such as the Coorong lakes in South Australia, naturally sequester carbon dioxide in magnesium carbonate minerals. These minerals, which form in association with microorganisms in lake water, represent the safest possible long-term traps for carbon dioxide pollution. This project aims to determine the essential geochemical constraints on formation of magnesium carbonate minerals in the Coorong lakes, which are u ....Solving the mystery of natural carbon mineralisation in Australian lakes. Some lakes, such as the Coorong lakes in South Australia, naturally sequester carbon dioxide in magnesium carbonate minerals. These minerals, which form in association with microorganisms in lake water, represent the safest possible long-term traps for carbon dioxide pollution. This project aims to determine the essential geochemical constraints on formation of magnesium carbonate minerals in the Coorong lakes, which are unique natural laboratories for studying carbon dioxide sequestration. By delivering fundamental understanding of how microbial populations alter water chemistry for carbonate production, this project aims to inform the design of efficient and sustainable technologies for carbon dioxide sequestration that emulate natural processes in lakes.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE240100305
Funder
Australian Research Council
Funding Amount
$434,042.00
Summary
Unravelling the pathways of methane production and oxidation in mangroves. This project addresses a long-standing conundrum of why high methane emissions are sustained in saline coastal wetlands by identifying and quantifying methane production and oxidation processes in mangrove ecosystems. Using a novel combination of cutting-edge instrumentation for greenhouse gases, radiocarbon/stable isotope analysis, this project will generate a first complete picture of the mangrove methane cycle, to accu ....Unravelling the pathways of methane production and oxidation in mangroves. This project addresses a long-standing conundrum of why high methane emissions are sustained in saline coastal wetlands by identifying and quantifying methane production and oxidation processes in mangrove ecosystems. Using a novel combination of cutting-edge instrumentation for greenhouse gases, radiocarbon/stable isotope analysis, this project will generate a first complete picture of the mangrove methane cycle, to accurately quantify, for the first time, Australia’s contribution to global coastal mangrove emissions. The outcomes will establish currently lacking fundamental understanding of wetland methane cycling, advance global biogeochemical models, and improve strategies for natural climate solutions of coastal wetlands in Australia.Read moreRead less
Maximising carbon sequestration in freshwater wetlands. Maximising carbon sequestration in freshwater wetlands. This project aims to determine how manipulation of wetland hydrology can alter sulphur and iron cycling to inhibit methane emission and improve wetland net-carbon sequestration. Wetlands are among earth's most efficient ecosystems for carbon sequestration, but methane emission can offset this capacity. Redox cycling of sulphur and iron in wetlands can inhibit methane emission, but the ....Maximising carbon sequestration in freshwater wetlands. Maximising carbon sequestration in freshwater wetlands. This project aims to determine how manipulation of wetland hydrology can alter sulphur and iron cycling to inhibit methane emission and improve wetland net-carbon sequestration. Wetlands are among earth's most efficient ecosystems for carbon sequestration, but methane emission can offset this capacity. Redox cycling of sulphur and iron in wetlands can inhibit methane emission, but the precise biogeochemical processes and their efficiency are very poorly constrained due to a lack of studies—especially in Australian freshwater wetlands. This project is expected to inhibit methane emission in freshwater wetlands and maximise their net carbon sequestration efficiency.Read moreRead less
Anaerobic methane oxidation in the deep sub-seafloor microbial biosphere. Microbes that control the emission of the greenhouse gas methane from the seafloor to the Earth's atmosphere effectively slow global warming. This project aims to understand the microbial controls for this process to improve an understanding of this planet's natural carbon cycle, and yield valuable information for marine CO2 geosequestration strategies.