A5074902539- Geochemistry and Geologic Mapping
- Soil Geostatistics and Mapping
- Fire effects on ecosystems
- Soil Carbon and Nitrogen Dynamics
- Plant Water Relations and Carbon Dynamics
- Mineral Processing and Grinding
- Rangeland and Wildlife Management
- Peatlands and Wetlands Ecology
- Invertebrate Taxonomy and Ecology
- Clay minerals and soil interactions
- Pasture and Agricultural Systems
- Species Distribution and Climate Change
- Geology and Paleoclimatology Research
- Forest ecology and management
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Spectroscopy and Chemometric Analyses
- Isotope Analysis in Ecology
- Bioenergy crop production and management
- Plant responses to water stress
- Forest Ecology and Biodiversity Studies
- Tree-ring climate responses
- Ecology and Vegetation Dynamics Studies
- Rangeland Management and Livestock Ecology
- Coastal wetland ecosystem dynamics
Curtin University
2022-2025
Murdoch University
2015-2022
There is global interest in spectroscopy and the development of large diverse soil spectral libraries (SSL) to model organic carbon (SOC) monitor, report, verify (MRV) its changes. The reason that increasing SOC can improve food production mitigate climate change. However, 'global' modelling with such hyperdimensional SSLs do not generalise well locally, e.g. at a field scale. To address this challenge, we propose deep transfer learning (DTL) leverage useful information from large-scale...
Mediterranean forest ecosystems will be increasingly affected by hotter drought and more frequent severe wildfire events in the future. However, little is known about longer-term responses of these forests to multiple disturbances forests' capacity maintain ecosystem function. This particularly so for below-ground organisms, which have received less attention than those above-ground, despite their essential contributions We investigated rhizosphere microbial communities a resprouting...
Soil is a huge carbon (C) reservoir, but where and how much extra C can be stored unknown. Current methods to estimate the maximum amount of mineral-associated organic (MAOC) stabilized in fine fraction (clay + silt,
Abstract The soil in terrestrial and coastal blue carbon ecosystems is an important sink. National inventories require accurate assessments of these to aid conservation, preservation, nature-based climate change mitigation strategies. Here we harmonise measurements from Australia’s apply multi-scale machine learning derive spatially explicit estimates stocks the environmental drivers variation. We find that vegetation are primary variation at continental scale, while ecosystem type, terrain,...
ABSTRACT Alongside gradual changes in climate, extreme events such as droughts and heatwaves have increased frequency globally. Together, chronic change been linked to forest die‐off, well larger, more severe wildfires. Increased disturbance inevitably increases the likelihood of compounding effects, highlighting importance understanding responses recovery. This study investigated physiological characteristics dominant canopy tree species, Eucalyptus marginata , on sites affected by a...
ABSTRACT Soil organic carbon (C) is heterogeneous. It exists in various forms along a decomposition continuum, from labile fast‐cycling compounds to more persistent that can reside the soil for centuries millennia. The C fractionation methods account this complexity by separating into distinct groups with similar turnover. Here, we aimed (a) fractionate 401 mineral soils three depths (0–10, 10–20, 20–30 cm) small concentrations (< 2.5% mean C) and varying textures mineralogy using...
Soil hosts the world&#8217;s largest terrestrial carbon pool. This is primarily held as soil organic matter (SOM), which ~60% carbon. While plant diversity known to influence SOM retention, strength and mechanisms of this relationship remain uncertain in some contexts, particularly Australia. Persistence influenced by interplay physical, chemical, biological factors. One proposed involves molecules that comprise inputs SOM. It thought greater molecular fosters persistence imposing an...
There is an increasing interest in eucalypt reforestation for a range of purposes Australia, including pulp-wood production, carbon mitigation and catchment water management. The impacts this on soil repellency have not been examined despite eucalypts often being associated with having movement across within soils. To investigate the role repellency, interactions properties, we 31 sites south-west Western Australia paired plots differing only present land use (pasture v. plantation)....
Abstract Prolonged drought and intense heat‐related events trigger sudden forest die‐off have now been reported from all forested continents. Such die‐offs are concerning given that heatwave forecast to increase in severity duration as climate change progresses. Quantifying consequences carbon dynamics storage critical for determining the current future mitigation potential of forests. We took stand measurements five times over 2+ years affected unaffected plots across Northern Jarrah...
The frequency and intensity of forest disturbances, such as drought fire, are increasing globally, with an increased likelihood multiple disturbance events occurring in short succession. Disturbances layered over one another may influence the or subsequent (a linked disturbance) impact response recovery trajectories compound disturbance), substantial implications for ecological spatiotemporal vulnerability. This study evaluates evidence interactions followed by wildfire a resprouting...
Abstract. Mining can cause severe disturbances to the soil, which underpins viability of terrestrial ecosystems. Post-mining rehabilitation relies on measuring soil properties that are critical indicators health. Soil visible–near-infrared (vis–NIR) spectroscopy is rapid, accurate, and cost-effective for estimating a range properties. Recent advances in infrared detectors microelectromechanical systems (MEMSs) have produced miniaturised, relatively inexpensive spectrometers. Here, we...
Dryland salinity is a major land management issue globally, and results in the abandonment of farmland. Revegetation with halophytic shrub species such as Atriplex nummularia for carbon mitigation may be viable option but to generate credits ongoing monitoring verification required. This study investigated utility high-resolution airborne images (Digital Multi Spectral Imagery (DMSI)) obtained two seasons estimate stocks at plant- stand-scale. Pixel-scale vegetation indices, sub-pixel...
Vegetated coastal ecosystems (VCE), encompassing tidal marshes, mangroves, and seagrasses, serve as significant 'blue' carbon (C) sinks. Improving our understanding of VCE soils their spatial temporal dynamics is essential for conservation efforts. Conventional methods to characterise the provenance measure total organic (TOC) inorganic (TIC) contents are cumbersome expensive. We recorded mid-infrared (MIR) spectra measured TOC TIC content 323 subsamples across consistent depths from 106...
Abstract. Soil carbon (C) is heterogeneous and exists in various forms along a decomposition continuum from labile fast-cycling compounds to more persistent of C, which can reside the soil for centuries millennia. Methods organic C fractionation aim account this complexity by separating into distinct groups that exhibit similar turnover. Our aims were (a) fractionate three mineral soils with small concentrations (<2.5 % C), different textures mineralogy using granulometric method derive...