Riparian rehabilitation and ecohydraulics: interactions between flow, sediment, vegetation and bank erosion in longstem tubestock rehabilitation works. Riparian lands are important for maintaining viable ecosystems, improving water quality and reducing sediment yields in rivers and streams. Research in Australia has shown that streambank erosion is the most significant processes in the continuing physical and ecological degradation of riparian zones. The recently developed longstem tubestock sys ....Riparian rehabilitation and ecohydraulics: interactions between flow, sediment, vegetation and bank erosion in longstem tubestock rehabilitation works. Riparian lands are important for maintaining viable ecosystems, improving water quality and reducing sediment yields in rivers and streams. Research in Australia has shown that streambank erosion is the most significant processes in the continuing physical and ecological degradation of riparian zones. The recently developed longstem tubestock system has shown promise in controlling streambank erosion using native vegetation. However, rehabilitation practices rely on ad-hoc recipes without a thorough scientific understanding of near-bank processes. This research will fill this gap by combining field and laboratory experiments on tubestock plantings in order to develop guidelines and predictive tools for riparian zone management.Read moreRead less
Computer simulation and field application of tidal buffering and sub-surface alkaline barrier techniques to enhance acid sulphate soils management. In low-lying coastal areas, groundwater drawdown due to deep flood mitigation drains and prolonged droughts has exacerbated sub-surface pyrite oxidation, forming sulphuric acid. The distribution of acid following rainfall affects soil-water quality. The pressures of urban development in the Shoalhaven floodplain (civil infrastructure, agriculture, aq ....Computer simulation and field application of tidal buffering and sub-surface alkaline barrier techniques to enhance acid sulphate soils management. In low-lying coastal areas, groundwater drawdown due to deep flood mitigation drains and prolonged droughts has exacerbated sub-surface pyrite oxidation, forming sulphuric acid. The distribution of acid following rainfall affects soil-water quality. The pressures of urban development in the Shoalhaven floodplain (civil infrastructure, agriculture, aquaculture and recreational industries) necessitate the accurate prediction of acid migration. Therefore, the key challenge will be the development of comprehensive numerical models, which include complex estuarine hydrogeology and tidal dynamics, supported by field monitoring. Using these models, the novel concepts of 2-way floodgates that promote tidal flushing and the effectiveness of sub-surface alkaline barriers can be tested in the Shoalhaven, and subsequently applied globally.Read moreRead less