A5005574568- Soil and Water Nutrient Dynamics
- Soil erosion and sediment transport
- Coastal wetland ecosystem dynamics
- Marine and coastal ecosystems
- Hydrology and Watershed Management Studies
- Hydrology and Sediment Transport Processes
- Soil Carbon and Nitrogen Dynamics
- Fish Ecology and Management Studies
- Coral and Marine Ecosystems Studies
- Geology and Paleoclimatology Research
- Groundwater and Watershed Analysis
- Coastal and Marine Management
- Peatlands and Wetlands Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coastal and Marine Dynamics
- Marine and fisheries research
- Groundwater and Isotope Geochemistry
- Ecology and Vegetation Dynamics Studies
- Isotope Analysis in Ecology
- Water Quality and Pollution Assessment
- Heavy metals in environment
- Dam Engineering and Safety
- Urban Stormwater Management Solutions
- Invertebrate Taxonomy and Ecology
- Arctic and Russian Policy Studies
Queensland Department of Environment and Science
2012-2024
Cancer Council Queensland
2024
Griffith University
2006-2023
Queensland Government
2016-2023
ChemCentre
2016
Abstract Previous studies using fallout radionuclides ( 137 Cs and 210 Pb ex ) to determine the relative contributions of surface‐soil channel erosion (including gullies banks) stream sediments have used a relatively small number composite samples (<25) characterize source end members, concentrations in each members have, through use means standard errors, been assumed be normally distributed. Here, we examine activity processes supplying sediment seven water supply catchments South‐east...
A decline in the ecosystem health of Australia's Moreton Bay, a Ramsar wetland international significance, has been attributed to sediments and nutrients derived from catchment sources. To address this regional management plan set target reducing loads by 50%. Reforestation channel network proposed as means achieve reduction, but extent revegetation required is uncertain. Here we test hypothesis that sediment nutrient catchments decrease proportionally with increasing proportion stream...
Excess fine sediment delivery is a major contributor to the declining health of Great Barrier Reef and identifying dominant source areas has been critical prioritising erosion remediation programs. The Bowen River catchment within Burdekin Basin recognised as hence received considerable research investment over last two decades. This study adopts novel approach integrate three independently derived budgets produced from scale budget model (Dynamic SedNet), targeted tributary water quality...
Targeting catchment nutrient critical source areas (CSAs) (areas contributing most of the nutrients in a catchment) is an efficient way to prioritize remediation sites for reducing runoff waterways. We tested if soil slurry approach - with particle sizes and sediment concentrations representative those streams during high rainfall events can be used identify potential CSAs within individual land use types, examine fire impacts, contribution leaf litter topsoil export subtropical catchments....
Abstract Purpose Revegetation of riparian zones is important to improve their soil nitrogen (N) dynamics and preserve microbial compositions. However, the success revegetation projects currently depends on weed control reduce non-target vegetation competing over nutrients ensure target plant species growth survival. Different methods affect composition N cycling. long-term effects herbicides pools community remain uncertain even after cessation herbicide application. Materials This study...
A framework for integrated river basin management was designed in consultation with African managers 1990–1991. It used as a training guide at five regional seminars organized 1992–1993 by the Large River Management Project of Francophone Summit (Paris). begins an extensive documentation phase to produce diagnosis basin, moves into planning and ends action monitoring phase. Integrated is feasible but real challenge lies lack information need people-oriented approach.
Abstract. Gully erosion can be a major disruptor to global fluvial sediment budgets. in the catchments of Great Barrier Reef is attributed ∼40 % fine suspended pollution freshwater and marine ecosystems downstream. Mitigating this source will have lasting positive impact on water quality connected rivers receiving environment. Here we conduct preliminary evaluation ability intensive landscape-scale gully remediation reduce associated nutrient export from catchment draining Reef. The method...
Point- and non-point source nutrients are likely to have different ecological impacts in receiving waters, due differences the concentration proportions of nutrient fractions. However, direct comparison their waters has barely been quantified. We undertook algal bioassays with communities from river sites showed that there was a photosynthetic yield (Fv/Fm) response enrichment when concentrations were relatively low, but not at higher concentrations. To combat this variability state algae,...
The Brisbane River estuary is an anthropogenically-impacted waterway in southeast Queensland, Australia. over 80 km long and flows through urbanised region. It receives 500 tonnes per year of total nitrogen (N) from direct point-source discharges addition to sporadic flood loads N agriculturally impacted upper catchment. Comprehensive water quality monitoring data for the have been collected at least 2001. This includes ambient nutrient concentrations estuary, concentration volume catchment...