Preclearing hydrology of the Western Australia wheatbelt: Target for the future?

Hatton, Tom; Ruprecht, John; George, R.J.

doi:10.1023/a:1027310511299

Cited by 100 publications

(78 citation statements)

References 39 publications

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“…Historically, the pre-clearing hydrogeology, climate and native vegetation characteristics of the region produced hydrological systems with relatively deep groundwater tables (> 30 m), remarkably high rates of evaporation, very low surface flows, and a build-up of salts stored in the unsaturated root zone. Pervasive clearing throughout the region caused a drastic shift in these defining characteristics, triggering a significant rise in groundwater tables and consequent mobilisation of stored salts, a sharp decrease in evaporation rates, frequent waterlogging due to degraded soils, and substantial increases in surface runoff leading to the discharge of saline water into rivers and lakes (Hatton et al, 2003). These impacts have been further compounded by the high variability in the amount and spatial distribution of annual rainfall.…”

Section: Lake Toolibin Catchmentmentioning

confidence: 99%

A prototype framework for models of socio-hydrology: identification of key feedback loops and parameterisation approach

Elshafei

Sivapalan

Tonts

et al. 2014

Hydrol. Earth Syst. Sci.

195

277

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Abstract. It is increasingly acknowledged that, in order to sustainably manage global freshwater resources, it is critical that we better understand the nature of human-hydrology interactions at the broader catchment system scale. Yet to date, a generic conceptual framework for building models of catchment systems that include adequate representation of socioeconomic systems -and the dynamic feedbacks between human and natural systems -has remained elusive. In an attempt to work towards such a model, this paper outlines a generic framework for models of socio-hydrology applicable to agricultural catchments, made up of six key components that combine to form the coupled system dynamics: namely, catchment hydrology, population, economics, environment, socioeconomic sensitivity and collective response. The conceptual framework posits two novel constructs: (i) a composite socioeconomic driving variable, termed the Community Sensitivity state variable, which seeks to capture the perceived level of threat to a community's quality of life, and acts as a key link tying together one of the fundamental feedback loops of the coupled system, and (ii) a Behavioural Response variable as the observable feedback mechanism, which reflects land and water management decisions relevant to the hydrological context. The framework makes a further contribution through the introduction of three macroscale parameters that enable it to normalise for differences in climate, socioeconomic and political gradients across study sites. In this way, the framework provides for both macroscale contextual parameters, which allow for comparative studies to be undertaken, and catchment-specific conditions, by way of tailored "closure relationships", in order to ensure that site-specific and application-specific contexts of sociohydrologic problems can be accommodated. To demonstrate how such a framework would be applied, two sociohydrological case studies, taken from the Australian experience, are presented and the parameterisation approach that would be taken in each case is discussed. Preliminary findings in the case studies lend support to the conceptual theories outlined in the framework. It is envisioned that the application of this framework across study sites and gradients will aid in developing our understanding of the fundamental interactions and feedbacks in such complex human-hydrology systems, and allow hydrologists to improve social-ecological systems modelling through better representation of human feedbacks on hydrological processes.

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Section: Lake Toolibin Catchmentmentioning

confidence: 99%

A prototype framework for models of socio-hydrology: identification of key feedback loops and parameterisation approach

Elshafei

Sivapalan

Tonts

et al. 2014

Hydrol. Earth Syst. Sci.

195

277

View full text Add to dashboard Cite

show abstract

“…There is considerable interest in Australia in the use of trees to ameliorate dryland salinity (Hatton and Nulsen 1999;Hatton et al 2003). Changes in catchment hydrology as a result of deforestation, with resultant movement of the water table towards the ground surface have been extensively documented (Hatton et al 2003).…”

Section: This Special Issuementioning

confidence: 99%

“…Changes in catchment hydrology as a result of deforestation, with resultant movement of the water table towards the ground surface have been extensively documented (Hatton et al 2003). Although not previously understood to be groundwater-dependent ecosystems, the direct interaction of woodlands, both plantation and native remnant, with groundwater through the processes of recharge and discharge of groundwater (Jolly and Cook 2002;Stirzaker et al 2002), justifies their inclusion in this special edition and makes this third group of papers particularly important.…”

Section: This Special Issuementioning

confidence: 99%

Groundwater-dependent ecosystems: the where, what and why of GDEs

2006

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“…The salinity recorded in a fully exposed gauge was generally lower than that of an under canopy gauge (Williamson et al, 1987). The principal source of salt in the soil profile is the atmospheric input originating from the ocean (Hingston and Gailitis, 1976) and increases with distance from the coast due to less flushing with lower rainfall (Stokes et al, 1980). Soil salt profile data was limited to five locations for both catchments.…”

Section: Salt Fall and Distributionmentioning

confidence: 99%

A daily salt balance model for stream salinity generation processes following partial clearing from forest to pasture

Bari

Smettem

2006

Hydrol. Earth Syst. Sci.

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Abstract. We developed a coupled salt and water balance model to represent the stream salinity generation process following land use changes. The conceptual model consists of three main components with five stores: (i) Dry, Wet and Subsurface Stores, (ii) a saturated Groundwater Store and (iii) a transient Stream zone Store. The Dry and Wet Stores represent the salt and water movement in the unsaturated zone and also the near-stream dynamic saturated areas, responsible for the generation of salt flux associated with surface runoff and interflow. The unsaturated Subsurface Store represents the salt bulge and the salt fluxes. The Groundwater Store comes into play when the groundwater level is at or above the stream invert and quantifies the salt fluxes to the Stream zone Store. In the stream zone module, we consider a "free mixing" between the salt brought about by surface runoff, interflow and groundwater flow. Salt accumulation on the surface due to evaporation and its flushing by initial winter flow is also incorporated in the Stream zone Store. The salt balance model was calibrated sequentially following successful application of the water balance model. Initial salt stores were estimated from measured salt profile data. We incorporated two lumped parameters to represent the complex chemical processes like diffusion-dilutiondispersion and salt fluxes due to preferential flow. The model has performed very well in simulating stream salinity generation processes observed at Ernies and Lemon experimental catchments in south west of Western Australia. The simulated and observed stream salinity and salt loads compare Correspondence to: M. A. Bari (mohammed.bari@environment.wa.gov.au) very well throughout the study period with NSE of 0.7 and 0.4 for Ernies and Lemon catchment respectively. The model slightly over predicted annual stream salt load by 6.2% and 6.8%.

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Preclearing hydrology of the Western Australia wheatbelt: Target for the future?

Cited by 100 publications

References 39 publications

A prototype framework for models of socio-hydrology: identification of key feedback loops and parameterisation approach

A prototype framework for models of socio-hydrology: identification of key feedback loops and parameterisation approach

Groundwater-dependent ecosystems: the where, what and why of GDEs

A daily salt balance model for stream salinity generation processes following partial clearing from forest to pasture

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