A5029752647- Soil Geostatistics and Mapping
- Soil Carbon and Nitrogen Dynamics
- Geological and Geochemical Analysis
- Remote Sensing in Agriculture
- Soil and Unsaturated Flow
- Geological and Geophysical Studies
- Geochemistry and Geologic Mapping
- Soil erosion and sediment transport
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Remote Sensing and LiDAR Applications
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Soil and Water Nutrient Dynamics
- Soil Moisture and Remote Sensing
- Geological Studies and Exploration
- Landslides and related hazards
- Land Use and Ecosystem Services
- Remote Sensing and Land Use
- Climate change impacts on agriculture
- Methane Hydrates and Related Phenomena
- Forest Ecology and Biodiversity Studies
- Planetary Science and Exploration
- Isotope Analysis in Ecology
- Agricultural Economics and Policy
Queensland Department of Environment and Science
2012-2021
Queensland Government
2018-2019
The University of Queensland
2018
The University of Sydney
1999-2013
Australian Centre for International Agricultural Research
1999-2013
CSIRO Land and Water
2013
Massachusetts Institute of Technology
1970-2011
Planetary Science Institute
2010
National Remote Sensing Centre
2009
Rothamsted Research
2004-2008
The South Pacific is anomalous in terms of the Sr, Nd, and Pb isotope ratios its hot spot basalts, a thermally enhanced lithosphere, possibly hotter mantle. We have studied characteristics 12 Cretaceous seamounts Magellans, Marshall Wake seamount groups (western Ocean) that originated this Isotopic Thermal Anomaly (SOPITA). range values data are similar to those island chains Samoa, Tahiti, Marquesas Cook/Austral SOPITA. These define two major mantle components suggesting isotopically...
This study aimed to unravel the effects of climate, topography, soil, and grazing management on soil organic carbon (SOC) stocks in lands north-eastern Australia. We sampled for SOC at 98 sites from 18 properties across Queensland, These samples covered four nominal classes (Continuous, Rotational, Cell, Exclosure), eight broad types, a strong tropical subtropical climatic gradient. Temperature vapour-pressure deficit explained >80% variability cumulative equivalent mineral masses...
ABSTRACT 40 Ar– 39 Ar dating of detrital white micas, petrography and heavy mineral analysis whole‐rock geochemistry has been applied to three time‐equivalent sections through the Siwalik Group molasse in SW Nepal [Tinau Khola section (12–6 Ma), Surai (12–1 Ma) Karnali (16–5 Ma)]. ages from 1415 single micas show a peak between 20 15 Ma for all sections, corresponding period most extensive exhumation Greater Himalaya. Lag times less than 5 Myr persist until 10 Ma, indicating Himalayan rates...
Research both nationally and internationally has indicated that no-till (NT) management used in combination with stubble retention the potential to increase soil organic carbon (SOC) stocks cropping soils relative conventional tillage (CT). However, rates of SOC can vary depending on system, climate, type, making quantification change difficult a regional level. Various long-term trials commercial sites throughout Queensland were compare under CT NT soils, determine how climate type interact...
Abstract. Crop mapping and time series analysis of agronomic cycles are critical for monitoring land use management practices, analysing the issues agro-environmental impacts climate change. Multi-temporal Landsat data can be used to analyse decadal changes in cropping patterns at field level, owing its medium spatial resolution historical availability. This study attempts develop robust remote sensing techniques, applicable across a large geographic extent, state-wide history Queensland,...
Abstract Soil sodicity, acidity, and salinity are important soil constraints to wheat production in many cropping regions across Australia, the Australian agricultural industry needs accurate information on their economic impacts guide investment decisions remediation minimize productivity losses. We present a modelling framework that maps effects of yield, quantifying forfeited yields due specific at broad spatial scale assessing benefit managing these constraints. Of three considered...
Crop extent and frequency maps are an important input to inform the debate around land value competitive uses, in particular between cropping mining case of Queensland, Australia. Such spatial datasets useful for supporting decisions on natural resource management, planning policy. For major broadacre regions Australia, complete Landsat Time Series (LTS) archive from 1987 2015 was used a multi-temporal mapping approach, where spatial, spectral temporal information were combined multiple...