- Pasture and Agricultural Systems
- Ruminant Nutrition and Digestive Physiology
- Bioenergy crop production and management
- Agroforestry and silvopastoral systems
- Rangeland and Wildlife Management
- Legume Nitrogen Fixing Symbiosis
- Soil and Land Suitability Analysis
- Plant Taxonomy and Phylogenetics
- Coastal and Marine Management
- Coral and Marine Ecosystems Studies
- Ecology and Vegetation Dynamics Studies
- Marine and fisheries research
- Botany and Plant Ecology Studies
- Biological Control of Invasive Species
- SAS software applications and methods
- Groundwater and Watershed Analysis
- Fisheries and Aquaculture Studies
- Hemiptera Insect Studies
- Seedling growth and survival studies
- Marine animal studies overview
- Political and Social Dynamics in Chile and Latin America
- Soil Mechanics and Vehicle Dynamics
- Fossil Insects in Amber
- Forest Biomass Utilization and Management
- Soil Geostatistics and Mapping
Cornell University
2024
Southern California University for Professional Studies
2023
University of Southern California
2023
Department of Primary Industries and Regional Development
2019-2021
Government of Western Australia
2005-2014
The University of Western Australia
2005-2014
Department of Agriculture and Food Western Australia
2006-2014
Agriculture and Food
2008
Australian Alzheimer’s Research Foundation
2004
Marine Scotland
1998
Abstract: Major progress in understanding biological invasions has recently been made by quantitatively comparing successful and unsuccessful invasions. We used such an approach to test hypotheses about the role of climatic suitability, life history, historical factors establishment subsequent spread 40 species mammal that have introduced mainland Australia. Relative failed species, 23 became established had a greater area climatically suitable habitat available Australia, previously become...
Field experiments were carried out at seven sites in southern Australia from 2002 to 2006 measure changes plant frequency, root characteristics and summer activity for a range of grass herb species or cultivars. Annual rainfall during the experimental period was on average 75 mm lower than long-term average. Plant frequency differed significantly between sites. Temperate grasses generally had higher frequencies subtropical grasses, native herbs. Cocksfoot (Dactylis glomerata cvv. Currie,...
Abstract Background Post-exertional malaise (PEM), the hallmark symptom of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), represents a constellation abnormal responses to physical, cognitive, and/or emotional exertion including profound fatigue, cognitive dysfunction, and intolerance, among numerous other maladies. Two sequential cardiopulmonary exercise tests (2-d CPET) provide objective evidence in ME/CFS but validated only studies with small sample sizes. Further,...
Ninety-one perennial legumes and herbs (entries) from 47 species in 21 genera were evaluated at sites New South Wales, Australia Western over 3 years 2002 to 2005 identify plants with superior herbage production, persistence the potential reduce ground water recharge. Evaluation was undertaken three nurseries (general, waterlogged soil acid soil). Medicago sativa L. subsp. (lucerne) cv. Sceptre best performing across all sites. In general nurseries, Cichorium intybus (chicory) Grasslands...
To review pasture species for regions with 465–680 mm average annual rainfall, 22 perennial grasses and herbs were evaluated establishment productivity in four states at seven locations where the arrest of groundwater recharge is considered necessary to ameliorate dryland salinity. Species represented introduced native, temperate subtropical grasses, chicory (Cichorium intybus L.) plantain (Plantago lanceolata L.). This report describes yield; following paper persistence root...
The agricultural region of south-west Western Australia (WA) has a Mediterranean climate, characterised by winter-dominant rainfall pattern. Perennial subtropical grasses are increasingly being grown to increase productivity and reduce erosion on infertile sandy soils in the northern (NAR) WA, an area with mild winters dry, hot summers. However, little information exists persistence different species or their expected seasonal production feed quality. On south coast warm summers maritime...
Dryland salinity in southern Australia has been caused by inadequate water use annual crops and pastures. The purpose of this study was to compare the pastures Medicago sativa L. (lucerne) with Dorycnium hirsutum (L.) Ser., a potential new perennial forage species. soil dynamics under bare ground, legume-, lucerne-, D. hirsutum-based were compared at 2 sites low- (Merredin) medium- (New Norcia) rainfall wheatbelt Western between September 2002 February 2005. Soil drier than 8–23 mm Year 1,...
Keynote paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.There is considerable interest from Western Australian (WA) pastoralists on potential role of leucaena (Leucaena leucocephala) in northern WA, where area for dryland production species genus high. Although it highly regarded animal other countries and a contentious since its status as an environmental weed precludes use pastoral leases Kimberley Pilbara regions WA. Development...
The genus Dorycnium has been identified for its potential use as a forage plant southern Australia, but little is known about factors affecting establishment and survival. This investigation examined some the of D. hirsutum rectum in Mediterranean environments south-west Western Australia. population dynamics seedlings were investigated during summer drought 4 environments. effect time sowing on survival was tested management option improving these species. Poor seedling performance observed...
Abstract Dorycnium hirsutum and D. rectum are perennial legumes which may have potential for use as pastures the control of groundwater recharge in southern Australia. Little is known about quality forage species grazing livestock or how these respond to cutting. The effect cutting height on plant survival, production dry matter (DM), proportion leaf, edible stem (approximately <5 mm diameter) woody DM nutritive value components was investigated. Biomass above five cutting‐height...