A5019763716- Soil Carbon and Nitrogen Dynamics
- Soil erosion and sediment transport
- Soil and Unsaturated Flow
- Aeolian processes and effects
- Soil and Water Nutrient Dynamics
- Geology and Paleoclimatology Research
- Pasture and Agricultural Systems
- Clay minerals and soil interactions
- Peatlands and Wetlands Ecology
- Hydrology and Watershed Management Studies
- Soil Geostatistics and Mapping
- Geochemistry and Geologic Mapping
- Biocrusts and Microbial Ecology
- Sports Performance and Training
- Thermoregulation and physiological responses
- Hydrology and Sediment Transport Processes
- Soil Management and Crop Yield
- Mine drainage and remediation techniques
- Forest Biomass Utilization and Management
- Agronomic Practices and Intercropping Systems
- Forest ecology and management
- Landslides and related hazards
- Climate change and permafrost
- Ruminant Nutrition and Digestive Physiology
- Bioenergy crop production and management
Australian National University
2008-2023
University of Canberra
2013-2021
Commonwealth Scientific and Industrial Research Organisation
1988-2008
Australian Resources Research Centre
2008
Pennsylvania Hospital
2007
West Chester University
2007
Philadelphia University
2007
Parks and Wildlife Service
1988
The University of Western Australia
1974-1977
Boston University
1968-1971
This paper determines the influence of lime and gypsum on rehabilitation a degraded sodic soil in semi-arid environment 12 years after application. The aim was to assess strategies for soils as alternatives application alone. An experimental site used where combinations (L0G0, 0 t ha–1 ha–1; L0G1, L0G2.5, L0G5, L1G0, L2.5G0, L5G0, L1G1, L2.5G1) had been applied prior, 1994. earlier study reported effects 3 chemical ameliorants tillage range physical properties at site. current study, sampled...
Abstract Grazing management is a known influence of carbon accumulation in agricultural soil, but there conflicting evidence on the extent. This study compared organic and nitrogen stocks at conclusion 5‐year grazing trial fertilised native pasture south‐eastern Australia. The included three treatments: ungrazed, tactically grazed (set stocking with biannual rest periods) cell (intense frequent long periods). There was no treatment detected sward composition when averaged over seasons or...
SUMMARY The effect of treatment with either gypsum or sodium chloride on the saturated hydraulic conductivity ( K s ) repacked soil columns and modulus rupture (MOR) was studied surface samples two red‐brown earth soils from SE wheat belt in Australia. When exchangeable percentage (ESP) increased to >80, S substantially reduced MOR relative untreated soil; values parameters were nearly equal for these pairs high ESP soils. However, after Raywood had a twice, less than half, corresponding...
Summary There is a global need for inexpensive tools research and monitoring. Landscape function analysis ( LFA ) visual assessment procedure used to assess monitor soil rapidly from measurable surface characteristics. It uses 11 indicators of biogeochemical properties processes, generates three indices function: stability, nutrient cycling infiltration. These are strongly associated with the provision regulation ecosystem services such as retention, water nutrients, carbon storage biomass...
In 1994 a long-term field trial with 9 lime–gypsum combinations and 2 tillage treatments (reduced direct drill) was established on sodic red-brown earth soil [surface pH(water) 6.5] at property near Peak Hill, NSW, Australia. The lime-gypsum were: L0G0 (lime 0 t/ha, gypsum t/ha), L0G1, L0G2.5, L0G5, L1G0, L2.5G0, L5G0, L1G1, L2.5G1. After 3 years, higher rates of lime or their significantly (P < 0.01) increased exchangeable soluble calcium decreased sodium in the 0–100 mm layer soil....
Artists using conventional computer graphic input devices cannot produce the same visual effects which they can with traditional tools and media. The drawing prism is a new device allows people to draw or paint directly into frame buffer, brushes, their hands, variety of other objects. These objects be manipulated achieve continuously adjustable line qualities textures, in ways that artists have traditionally used hands tools.The uses one face large transparent prisms as surface. A video...
Increasing salinity (high levels of water-soluble salts) and sodicity exchangeable sodium) are serious land degradation issues worldwide. In Australia, affect a large proportion the landscape often coincide with agricultural land. Despite areal extent salt-affected soils, both worldwide in few data exist on soil organic carbon (SOC) stocks these areas. For this study, level SOC was determined scalded (bare areas without vegetation), scalded-eroded, vegetated, revegetated (i.e. sown pasture)...
In the present field survey, 72 sites were sampled to assess effect of climate (Monaro, Boorowa and Coleambally regions) parent material (Monaro region only; basalt granite) on soil organic carbon (OC) under perennial pastures. higher-rainfall zone Boorowa; >500mm mean annual rainfall), OC stocks introduced native pastures compared, whereas in lower-rainfall (Coleambally; <500mm rainfall) crops compared. Carbon fractions included total (TOC), particulate (POC), resistant (ROC) humic...
The effects of gypsum (0 and 10 t/ha) stubble management [retained (SR) or burnt (SB)] on a range soil chemical, physical, micromorphological properties were investigated grey Vertosol near Natimuk, Victoria, Australia. After 2.5 years 3 winter crops, gypsum, to lesser extent the treatments, resulted in significant changes composition exchangeable soluble cations, physical properties. When was combined with SR, beneficial this ameliorant present both A B horizons soil. SB, treatments only...