A5065943627- Fire effects on ecosystems
- Ecology and Vegetation Dynamics Studies
- Soil Carbon and Nitrogen Dynamics
- Rangeland and Wildlife Management
- Mycorrhizal Fungi and Plant Interactions
- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Legume Nitrogen Fixing Symbiosis
- Forest ecology and management
- Listeria monocytogenes in Food Safety
- Food Safety and Hygiene
- Forest Ecology and Biodiversity Studies
- Wildlife Ecology and Conservation
- Botany, Ecology, and Taxonomy Studies
- Plant Diversity and Evolution
- Pasture and Agricultural Systems
- Species Distribution and Climate Change
- Cultural Competency in Health Care
- Service-Learning and Community Engagement
- Plant Parasitism and Resistance
- Lichen and fungal ecology
- Forest Biomass Utilization and Management
- Fire dynamics and safety research
The University of Sydney
2016-2025
Natural Hazards Research Australia
2006-2017
The University of Melbourne
2005-2014
Melbourne Water
2005-2014
University of Technology Sydney
2012
University of Cape Town
1999-2005
The University of Western Australia
1994-2003
Graduate School USA
2000-2001
Stephen F. Austin State University
1988
Concentrations of starch in roots seeder species Erica from the Cape Floristic Region, South Africa were found to be considerably less than resprouters. Shoot was highly variable but mean values similar both and resprouter . Three distinct patterns storage recognized. All fell within definitions Categories 1 (narrow major minor parenchymatous rays, one two cells wide with no inter‐ray storage) or 2 (thick rays up seven thin small amounts whereas consistently 3 (broad eight conspicuous...
Selected epacrids (92 species in 15 genera) were examined with respect to fire response type, morphology, root anatomy and starch storage. Seeders, 75% of the investigated, possessed a single main stem small system lateral roots which most cases did not spread beyond shoot canopy. Resprouter generally multi-stemmed large lignotuberous stocks. Certain seeder resprouter intermediate form showed systems basally branched stems. Amounts seeders (1.9±0.5mg gd.wt per root) much less than...
Abstract A method is described for the rapid identification of biogenic, volatile organic compounds (VOCs) emitted by plants, including analysis temperature dependence those emissions. Direct in real time (DART) enabled ionization VOCs from stem and leaf several eucalyptus species E . cinerea , citriodora nicholii sideroxylon Plant tissues were placed directly gap between DART source skimmer capillary inlet time‐of‐flight (TOF) mass spectrometer. Temperature‐dependent emission was achieved...
Leaves from three species of Eucalyptus were combusted in a mass-loss calorimeter to characterise the effect fuel moisture on energy release and combustion products for this genus. Increasing content reduced peak heat effective negative exponential pattern while simultaneously increasing time-to-ignition. Estimates probability ignition, based upon time-to-ignition data, indicated that critical 50% ignition ranged 81 89% dry-weight basis. The modified efficiency leaves (the ratio CO2...
The increasing potential for wildfires in Mediterranean-type landscapes has resulted pressure to mitigate fire threats. This is typically achieved by strategic reduction of fuel. To prioritise fuel management, it necessary understand vegetation dynamics and the relationships between plants As direct measurement field labour intensive, mapped classes are used as estimate load. properties vary continuously, error such estimates can be high. Remotely sensed biophysical data commonly...
In southeastern Australia, the overstory species Eucalyptus regnans F. Muell. commonly grows with either of two leguminous understory trees, Acacia melanoxylon (R. Br. Ex Ait. f.) or dealbata (Link.). Our objective was to elucidate interactions between dominant eucalypt and its companion acacias for nitrogen (N) sources. Use stable N isotopes as tracers revealed that ammonium preferred soil source all species, nevertheless, total uptake varied greatly among species. Studies double-labeled...
Abstract Question Plant communities are not necessarily spatially exclusive; a point in space can exhibit properties of multiple communities. Such variation be described using floristically defined ‘fuzzy’ units, however these may easily delineated standard remote sensing methods. Is there value considering as fuzzy? Can species distribution modelling methods used to represent fuzzy spatially? Location Western Victoria, A ustralia. Methods Fuzzy were objectively identified from vegetation...
The effects of soil type and temperature on the survival a cocktail five Salmonella enterica serotypes (Enteritidis, Infantis, Montevideo, Typhimurium Zanzibar) in manure-amended soils under controlled laboratory conditions was assessed. Containers clay loam or sandy soil, unaltered amended with 2% (w/w) poultry manure, were inoculated S. (~5 log10 CFU per gram) held at 5, 21 37°C for 6 weeks. Statistical analysis persistence identified significant three-way interaction between type, manure...
Abstract A variety of native Western Australian legumes produced root clusters in sand culture confirming field and published observations. In general, these grew equally well when supplied with organic or inorganic sources phosphorus. The nitrogen content shoots roots varied little among treatments for all species, however, phosphorus was always greater plants inositol‐P. plasticity growth response to localized placement demonstrated using a simple ‘split root’ technique. Total dry weight...