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Bromine isotopic evolution of the Earth and solar system. A world first capability of innovative isotopic tracing within the earth and solar system materials will be developed. Insights into how planets are formed and the transport of materials and heat within them will be tracked through the application of the naturally occurring isotopes of Bromine.
Changes of salt dynamics and distribution in coastal marshes. This project aims to determine and quantify key mechanisms underlying salt transport and distribution in coastal salt marshes. Combining field measurements, laboratory experiments and numerical simulations, the proposed research will tackle long-standing questions concerning accumulation of excessive salt in the marsh soil, which imposes significant stress on marsh plants. This project will examine how temporal and spatial salinity va ....Changes of salt dynamics and distribution in coastal marshes. This project aims to determine and quantify key mechanisms underlying salt transport and distribution in coastal salt marshes. Combining field measurements, laboratory experiments and numerical simulations, the proposed research will tackle long-standing questions concerning accumulation of excessive salt in the marsh soil, which imposes significant stress on marsh plants. This project will examine how temporal and spatial salinity variations lead to large density gradients that may trigger unstable pore-water flow and solute transport. The outcomes will advance our understanding of fundamental links between the marsh hydrology and ecology, and improve our scientific basis for evaluating the marsh ecosystem under different stress conditions.Read moreRead less
Exploring water worlds for ecohydrologic modelling of ephemeral catchments. This project aims to identify and quantify the key processes driving the generation of streamflow in ephemeral catchments with different rainfall regimes, topography, geology, and two contrasting land uses. Four ephemeral catchments in south-western Victoria will be used as a case study to identify how these catchments store and release water. Particular focus will be directed to understanding the roles of groundwater an ....Exploring water worlds for ecohydrologic modelling of ephemeral catchments. This project aims to identify and quantify the key processes driving the generation of streamflow in ephemeral catchments with different rainfall regimes, topography, geology, and two contrasting land uses. Four ephemeral catchments in south-western Victoria will be used as a case study to identify how these catchments store and release water. Particular focus will be directed to understanding the roles of groundwater and surface runoff in supplying the streams when they flow, and how rainfall is partitioned between tree water use, groundwater recharge, and streamflow. The outcomes from experimental observations will be used to improve current hydrological models to support land and water management.Read moreRead less
A new method for identifying actual groundwater contributions to base flow using both stream flow and groundwater head data. Estimating the groundwater contribution to river flow is difficult but critical for managing water resources and protecting stream environments. This project will deliver better methods for estimating these contributions using existing stream flow and groundwater data.
Physical and geochemical coupling in a subterranean estuary. This project aims to determine and quantify key mechanisms governing chemical transport and transformation in a tidally dominated subterranean estuary. The project will be the first attempt worldwide to measure simultaneously the temporal and spatial variability of coupled physical and geochemical processes in the intertidal zone of a subterranean estuary. The project will generate much-needed understanding of the role of subterranean ....Physical and geochemical coupling in a subterranean estuary. This project aims to determine and quantify key mechanisms governing chemical transport and transformation in a tidally dominated subterranean estuary. The project will be the first attempt worldwide to measure simultaneously the temporal and spatial variability of coupled physical and geochemical processes in the intertidal zone of a subterranean estuary. The project will generate much-needed understanding of the role of subterranean estuaries in controlling fluxes of land-derived chemicals to the ocean via submarine groundwater discharge. The outcomes will have important implications for assessing and minimising the impact of groundwater contamination on the coastal zone. It will provide better understanding of the pathway of land-derived nutrients and contaminants entering coastal waters, leading to improvement of strategies for sustainable coastal resources management and development, and integration of upland and lowland catchments management.Read moreRead less
Source - receptor analysis of lignin and lipid macromolecules in karst to quantify stalagmite biomarker proxies of vegetation and temperature change. Cave stalagmites are archives of past climate and environmental changes. This project seeks to develop two novel biomarkers, lignin and bacterial membrane lipids, from which we will generate new records of historic and prehistoric vegetation and temperature change.
Identifying how a non-stationary environment affects species persistence. This project aims to achieve the first application of new ecological theory that accounts for environmental change and species’ ability to respond to that change, using caddisflies that lay eggs on rocks in rivers as a case study. Long-term change in climate has always occurred but is often not accounted for when estimating future population sizes and extinction risk in species. Outcomes will include new knowledge on chang ....Identifying how a non-stationary environment affects species persistence. This project aims to achieve the first application of new ecological theory that accounts for environmental change and species’ ability to respond to that change, using caddisflies that lay eggs on rocks in rivers as a case study. Long-term change in climate has always occurred but is often not accounted for when estimating future population sizes and extinction risk in species. Outcomes will include new knowledge on changing habitat availability, species’ ability to move in the landscape and successfully lay and hatch eggs, while creating a general template for use in other species. This will lead to significant benefits for conservation efforts worldwide, via the template’s inclusion in accepted extinction assessment protocols.Read moreRead less
Groundwater organic matter: carbon source or sink? The contribution of organic matter in groundwater to the global terrestrial carbon budget is unknown. This project aims to determine the processes that control the amount of groundwater organic matter by using six research bore-fields and laboratory facilities to analyse the concentration and character of both dissolved and colloidal organic matter. This is designed to determine the rate and extent of both the biological and the physiochemical p ....Groundwater organic matter: carbon source or sink? The contribution of organic matter in groundwater to the global terrestrial carbon budget is unknown. This project aims to determine the processes that control the amount of groundwater organic matter by using six research bore-fields and laboratory facilities to analyse the concentration and character of both dissolved and colloidal organic matter. This is designed to determine the rate and extent of both the biological and the physiochemical processes determining groundwater organic matter concentration. By quantifying the environmental conditions under which groundwater is a carbon source or sink, the project could guide policy to enable the management of the groundwater resource as part of the carbon economy.Read moreRead less