A5029606919- Hydrology and Watershed Management Studies
- Ecology and Vegetation Dynamics Studies
- Water resources management and optimization
- Pasture and Agricultural Systems
- Water-Energy-Food Nexus Studies
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Plant Water Relations and Carbon Dynamics
- Rangeland and Wildlife Management
- Plant and animal studies
- Soil erosion and sediment transport
- Soil and Unsaturated Flow
- Hydrology and Sediment Transport Processes
- Climate change impacts on agriculture
- Soil Geostatistics and Mapping
- Conservation, Biodiversity, and Resource Management
- Agroforestry and silvopastoral systems
- Soil Moisture and Remote Sensing
- Irrigation Practices and Water Management
- Animal Ecology and Behavior Studies
- Invertebrate Taxonomy and Ecology
- Rangeland Management and Livestock Ecology
- Forest ecology and management
- Flood Risk Assessment and Management
- Sexual Assault and Victimization Studies
Australian National University
2014-2024
Columbia University
2024
University of California, Davis
2009-2023
Pacific Southwest Research Station
2021
Instituto Politécnico Nacional
2015-2021
Instituto Tecnológico de Oaxaca
2017-2020
Oregon State University
2016-2019
Impact Technology Development (United States)
2015
University of California System
2011-2013
Centro de Investigación y Desarrollo
2013
There is an ongoing debate on what constitutes sustainable intensification of agriculture (SIA). In this paper, we propose that a paradigm for can be defined and translated into operational framework agricultural development. We argue must now defined—at all scales—in the context rapidly rising global environmental changes in Anthropocene, while focusing eradicating poverty hunger contributing to human wellbeing. The criteria approach propose, shift towards agriculture, integrates dual...
Higher efficiency rarely reduces water consumption
Abstract Aim To evaluate a suite of species distribution models for their utility as predictors suitable habitat and tools new population discovery six rare plant that have both narrow geographical ranges specialized requirements. Location The Rattlesnake Creek Terrane (RCT) the Shasta‐Trinity National Forest in northern California Coast Range United States. Methods We used occurrence records from 25 years US Service botanical surveys, environmental remotely sensed climate data to model...
Abstract Simple water‐retention functions in current use do not predict zero water content at oven dryness. Using the Campbell equation θ = a ψ ‐c s (ψ − 0 ) relating volumetric content, θ, to matric suction, ψ, as an example, we examined modification ensure that curve terminates suction 1000 MPa, approximating The new is )/(ψ c . It was compared with unmodified by fitting data from Australia, UK, and USA. Results showed only fit slightly better than original equation, mean standard...
Abstract Although fire is a fundamental ecological process in western North American forests, climate warming and accumulating forest fuels due to suppression have led wildfires that burn at high severity across larger fractions of their footprint than were historically typical. These trends spiked upwards recent years are particularly pronounced the Sierra Nevada–Southern Cascades ecoregion California, USA, neighboring states. We assessed annual area burned (AAB) percentage low‐to‐moderate...
The influence of pasture management (sowing introduced species, timber treatment, clearing and cultivation, stocking rate) on runoff soil movement was measured a neutral red duplex at Cardigan, near Charters Towers. Runoff were greatest in native woodlands least developed pastures, although the differences often not significant. related to cover levels plots. In small rainfall events (total 4 0 mm intensity e l 5 mm/h), decreased rapidly as increased, only (40%) needed reduce them low level....
We review the pressures, threats and risks to national food water availability based on projected global population growth 2050 using Global Food Water System (GFWS) platform. This platform is used explore deficits for scenarios of crop production under various fertiliser, use, improvement land use options. The GFWS can be assess effects annual productivity improvements incorporates data from 19 major food-producing nations generate projections gaps in irrigated agriculture. Preliminary...
We examine water governance in the Murray-Darling Basin using frameworks of rent-seeking and regulatory capture. These are used to evaluate two government programmes intended ensure an environmentally sustainable level diversions basin: targeted one-on-one purchases entitlements from designated sellers; subsidies for irrigation infrastructure increase efficiency. Deficiencies delivering stated environmental goals both programmes, questions about their 'value money', highlighted. Specific...
Increasing variability in climate and environmental degradation call for an infrastructure design paradigm that considers both sustainability resilience using performance-based metrics. This paper discusses recent progress this direction, including emerging rating systems, technologies tools, examples of sustainable projects. Recommendations are made new research, development policy changes needed to further advance towards integrating approaches across the entire cycle. These include a...
Abstract “Bottom‐up” field‐based, crop‐hydrological models are used to estimate food production and irrigation water extractions under multiple scenarios of nitrogen use crop yield increases from 2010 2050 for 19 countries. The results show: (1) a deficit before worst case climate change scenario in terms annual improvement; (2) substantial deficits, as result irrigation, major food‐producing countries that will prevent these nations meeting their domestic requirements the absence...
Abstract We analyse the threats of global environmental change, as they relate to food security. First, we review three discourses: (i) ‘sustainable intensification’, or increase supplies without compromising producing inputs, such soils and water; (ii) ‘nexus’ that seeks understand links across food, energy, environment water systems; (iii) ‘resilience thinking’ focuses on how ensure critical capacities energy systems are maintained in presence uncertainties threats. Second, build these...
An aerial rope network was constructed, using three emergent trees as supports, which provides access to a large volume of tropical rain forest from ground level above the canopy's upper surface. The virtually unexplored canopy community thus becomes accessible for broad range scientific research. THE CANOPY OF TROPICAL FOREST possesses one most complex and diverse communities on earth, yet there have been few effective methods studying this zone, none these comprehensive forest. To observe...
We use published water balance data from irrigated cropping to show that entitlements acquired for environmental purposes through infrastructure subsidies in the Murray–Darling Basin, Australia, have resulted smaller increases net stream and river flows than is estimated by Australian Government, may even reduced flows. Two key policy implications arising our results are: (1) improve irrigation efficiency so as increase must employ accounting effects on return are known volume of extracted...
We examine the impediments to scientific integrity with an analysis of water science-policy interface for Murray-Darling Basin (MDB), Australia. highlight dangers public interest ‘administrative capture’ science, whereby scientists are incentivised narrow or close down questions asked, debates on evidence and dialogue so support predetermined policy actions. Administrative capture science is not intended be objective disinterested contributes a diminution trust in scientists. Using...
We respond to the problem of declining streamflows in northern Murray–Darling Basin, Australia, a region that suffers from hydrological droughts and drying trend. partitioned effect meteorological trends anthropogenic drivers on annual streamflow, quantified streamflow decline waterbird abundance, estimated effects change measure ecosystem resilience, calculated net benefits in-stream water reallocation. The were assessed by comparing Lower Darling (hereafter Barka) River, which has large...
Abstract There is a dearth of knowledge on the runoff processes eucalypt woodland communities in semi‐arid tropics Australia. The work was undertaken 100 m transect 0·8 degree hillslope typical ‘smooth plainlands’ central‐north Queensland. This paper introduces new experimental design for measuring overland flow such areas by way cascade system unbounded plots which allow inputs and outputs between troughs to be calculated. Most storms generate flow. Time ranges 1 18 min where rain...