Dynamics and management of riverine freshwater lenses. Rivers are the main source of freshwater for many ecosystems in semi-arid zones. River water may seep into the floodplain aquifer, providing an accessible store of low-salinity water within freshwater lenses. The project aims to investigate lens dynamics using numerical groundwater models supported by extensive field data from the lower River Murray, where freshwater lenses are declining. The project aims to model lens extent, growth and dec ....Dynamics and management of riverine freshwater lenses. Rivers are the main source of freshwater for many ecosystems in semi-arid zones. River water may seep into the floodplain aquifer, providing an accessible store of low-salinity water within freshwater lenses. The project aims to investigate lens dynamics using numerical groundwater models supported by extensive field data from the lower River Murray, where freshwater lenses are declining. The project aims to model lens extent, growth and decline in response to natural variations in climate and to changes in land use, river regulation and groundwater pumping. Project results intend to evaluate management options to promote freshwater lenses, with the aim of improving river salinity and floodplain vegetation health.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
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