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Integrated Water Quality Modelling: Ben Chifley Dam Catchment, Australia, Lachlan T. H. Newham, R. A. Letcher, A. J. Jakeman, A. L. Heathwaite, C. J. Smith, D. Large Jul 2002

Integrated Water Quality Modelling: Ben Chifley Dam Catchment, Australia, Lachlan T. H. Newham, R. A. Letcher, A. J. Jakeman, A. L. Heathwaite, C. J. Smith, D. Large

International Congress on Environmental Modelling and Software

This paper describes an integrated hydrologic, stream sediment and nutrient export modelling system. The modelling system is designed to simulate catchment-scale land and water management activities in the Ben Chifley Dam Catchment (BCDC). The dam has experienced problematic blue-green algal blooms over the past decade. The aim of the modelling is to examine management scenarios designed to reduce nutrient and sediment delivery from the BCDC. This paper describes the framework of the system along with brief description of each of the various components. The innovation of the modelling system is the integration of otherwise separate modelling approaches. The output of …

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Catchment Modelling – A Resource Manager’S Perspective, J.E. Caminiti Jul 2002

Catchment Modelling – A Resource Manager’S Perspective, J.E. Caminiti

International Congress on Environmental Modelling and Software

Models are invaluable tools for resource management. Models help resource managers develop a shared conceptual understanding of complex natural systems, allow testing of management scenarios, predict outcomes of high risk and high cost environmental manipulations, and set priorities. Catchment modelling is a specialist field, and different modelling approaches are specialist areas in themselves. There are a plethora of models available that apply to integrated catchment management, from micro to landscape scales, from deterministic models to broad-brush models. Different philosophies abound; with some experts advocating top-down systems approaches and others who dismiss these as being too uncertain and based on opinion …

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Regional Integrated Management Information System, M. A. Cameron, B. F. W. Croke, K. L. Taylor, Glen Walker, B. Watson Jul 2002

Regional Integrated Management Information System, M. A. Cameron, B. F. W. Croke, K. L. Taylor, Glen Walker, B. Watson

International Congress on Environmental Modelling and Software

Landholders, departmental agencies and other stakeholders have long been involved in knowledge building of the physical elements affecting land use. Often, however, this has been without any accompanying information on social and economic impacts, or systems for exploring catchment trade-off decisions. RIMIS is the concept of a regional management system designed for landscape managers. It has a web-compatible interface allowing multiple users to access distributed data sources (including spatial databases) and run distributed bio-physical and socio-economic models to explore catchment management problems i.e. ask ‘what if?’ questions. Its models bring together science, sociology and economics, to explore interactions and show …

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Participatory Natural Resource Management: A Comparison Of Four Case Studies, M. Hare, R. A. Letcher, A. J. Jakeman Jul 2002

Participatory Natural Resource Management: A Comparison Of Four Case Studies, M. Hare, R. A. Letcher, A. J. Jakeman

International Congress on Environmental Modelling and Software

This paper presents an overview of four recent participatory resource management projects carried outon three continents. The aim is to elicit from these case studies a description of participatory process structures aswell as an analysis of the driving forces behind the selection of stakeholders and their involvement inmanagement projects. The case studies represent four different process structures set up to achieve two categoriesof process goal. They also suggest four main drivers in the design of such structures: process goals, existingpower structures, process direction and stakeholder numbers. The concept of scale of action mismatch isintroduced as directly affecting two out of …

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Lean Interfaces For Integrated Catchment Management Models: Rapid Development Using Icms, S. M. Cuddy, R. A. Letcher, M. B. Reed Jul 2002

Lean Interfaces For Integrated Catchment Management Models: Rapid Development Using Icms, S. M. Cuddy, R. A. Letcher, M. B. Reed

International Congress on Environmental Modelling and Software

A move towards the development of lean, issue-focused interfaces is being explored to provide arapid delivery mechanism to transfer catchment science to managers and custodians. This approach is a moveaway from development of large decision support systems which attempt to anticipate a myriad ofmanagement questions. It relies on having a modelling system which supports the rapid building andintegration of catchment models, and is independent of the interface. ICMS (Interactive ComponentModelling System) is a PC-based software tool which has been developed with this in mind. The kernel ofthe ICMS system, ICMSBuilder, provides the modeller’s view of the world, on top of …

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Nonparametric Test For Translog Specification Of Production Function In Japanese Manufacturing Industry, Y. Konishi, Y. Nishiyama Jul 2002

Nonparametric Test For Translog Specification Of Production Function In Japanese Manufacturing Industry, Y. Konishi, Y. Nishiyama

International Congress on Environmental Modelling and Software

Beginning with a series of pioneering work by Cobb and Douglas, estimation of productionfunction has been one of the main issues in empirical economics and econometrics in various aspects. Thefunctional form they used is called Cobb-Douglas production function. It is later generalized to so-calledtranslog production function which has a more flexible form to describe the relation between the output andinput levels. It is also analytically convenient for obtaining factor demand functions or cost function so that ithas been widely used in both macroeconomic and microeconomic empirical studies. However, it is wellknown that statistical analysis leads to incorrect conclusions in general …

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An Integrated Modelling Approach For Assessing Water Policy Rules And Land Use Change Options, Juliet Gilmour, R. A. Letcher Jul 2002

An Integrated Modelling Approach For Assessing Water Policy Rules And Land Use Change Options, Juliet Gilmour, R. A. Letcher

International Congress on Environmental Modelling and Software

The primary aim of the study has been to develop a modelling framework to quantitatively assess the impact of water allocation rules upon economic and biophysical environments (primarily hydrological) at the catchment scale. This paper identifies development of the modelling approach to answer allocation questions by examining hydrological, land and agricultural production systems. The conceptual framework underpinning the modelling approach identifies the major aspects of integration between hydrological and production systems. The production model is integrated at various points within the hydrological cycle including rainfall, streamflow and runoff components. The outcome of the approach allows water to be moved around …

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Environmental Modelling In Urban Areas With Gis, L. Matejicek, L. Benesova, J. Tonika Jul 2002

Environmental Modelling In Urban Areas With Gis, L. Matejicek, L. Benesova, J. Tonika

International Congress on Environmental Modelling and Software

More accurate spatio-temporal predictions of urban environment are needed as a basis forassessing exposures as a part of environmental studies, and to inform urban protection policy andmanagement. This paper is focused on modelling in the GIS to estimate air, water and soil pollution in urbanareas. The basic environmental components are complemented by bio-monitoring, waste management andnoise exposure. The models, which use data from long-time monitoring, are developed using correlation,regression and factor analysis; simulation of dynamic relation and spatio-temporal phenomena. Integration ofa wide range of relatively independent factors enables more complex analysis of environment in urban areas.GIS, which can integrate a …

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A Spatially Explicit Modelling Approach To Socioeconomic Development In South Africa, L. Erasmus, A. S. Van Jaarsveld, P. O. Bommel Jul 2002

A Spatially Explicit Modelling Approach To Socioeconomic Development In South Africa, L. Erasmus, A. S. Van Jaarsveld, P. O. Bommel

International Congress on Environmental Modelling and Software

South Africa finds itself at a development cross road: optimism for "high road" development is bisected by a wasteland of poverty and overpopulation. Intervention policies are largely "faith-based", even in the face of rising uncertainties surrounding population growth, HIV/Aids and resource availability. Added to this are the complexities of disparate spatial development and social scenarios, mass urbanization and immigration. In order to confront these threats, decision makers need analytical tools that can be used to explore potential intervention policies for their efficacy, desirability and inadvertent consequences in nontarget sectors. Such tools should adequately address uneven spatial development across environmental, economic …

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Linking Research, Policy And Practice For Managing Dynamic Water Resources In A Protected Area, U. Somorowska Jul 2002

Linking Research, Policy And Practice For Managing Dynamic Water Resources In A Protected Area, U. Somorowska

International Congress on Environmental Modelling and Software

Restoration of wetlands involves the necessity of maintaining the high moisture content of thesites involved. Managing adequate hydrological conditions means supporting successful habitat restoration ofwetland ecosystems. Before the management practices are implemented, the formulation of objectives in thedevelopment of restoration policies is required. It should be based on an understanding of the primarynatural controls of the water regimes. This research focuses on practical approaches to the management ofdynamic water resources in the protected area of the Kampinos National Park in Poland. The area has thestatus of UNESCO MAB Biosphere Reserve. Valuable wetland ecosystems are present in the area. They hadbeen …

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Environmental Damage Assessment Applied To Process Analysis. A Decision Support Alternative, I. Herrera, L. Kulay, Laureano Jiménez, Marta Schuhmacher Jul 2002

Environmental Damage Assessment Applied To Process Analysis. A Decision Support Alternative, I. Herrera, L. Kulay, Laureano Jiménez, Marta Schuhmacher

International Congress on Environmental Modelling and Software

Nowadays the environmental studies are increasingly important in the process analysis and design. These studies not only can be used to quantify the environmental damage, but also, as optimisation criteria together with technical and economical evaluations. In the present study, we develop a methodology based on several techniques (Risk Assessment (RA), Design Support Framework (DSF), and Endpoints Indicators Applying). This methodology which links the main aspects of process analysis and environmental damage assessment, comprehends three main steps: the first one involves the accomplishment of an inventory of raw material and energetic streams, which may be predicted or computed depending on …

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Sensitivity Testing Of A Biophysical Toolbox For Exploring Water Resources Utilisation And Management Options, Wendy S. Merritt, B. G. W. Croke, A. J. Jakeman Jul 2002

Sensitivity Testing Of A Biophysical Toolbox For Exploring Water Resources Utilisation And Management Options, Wendy S. Merritt, B. G. W. Croke, A. J. Jakeman

International Congress on Environmental Modelling and Software

This paper investigates the sensitivities of model outputs to model parameter values within a Biophysical Toolbox developed as part of a Decision Support System (DSS) for integrated catchment assessment and management of land and water resources in the highland regions of northern Thailand. The toolbox contains a hydrological module based upon the IHACRES rainfall-runoff model, a crop model (CATCHCROP), and an erosion model (USLE) modified to suit conditions in northern Thailand. Emphasis in the development of the individual models within the Biophysical Toolbox was placed upon limiting model complexity. Limited data availability commonly restricts the complexity of the model structure …

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Iwram: An Integrated Modelling Toolbox For Considering Impacts Of Development And Land Use Change In Northern Thailand, R. A. Letcher, B. F. W. Croke, A. J. Jakeman, Wendy S. Merritt, P. Perez Jul 2002

Iwram: An Integrated Modelling Toolbox For Considering Impacts Of Development And Land Use Change In Northern Thailand, R. A. Letcher, B. F. W. Croke, A. J. Jakeman, Wendy S. Merritt, P. Perez

International Congress on Environmental Modelling and Software

The IWRAM Decision Support System was developed to consider economic, environmental, and sociocultural trade-offs involved with resource competition and development in the Mae Chaem catchment in Northern Thailand. IWRAM contains two modelling toolboxes utilising a nodal network structure for catchment analysis: a Biophysical Toolbox, for considering the biophysical (erosion, streamflow, crop) implications of 'painted on' land use scenarios; and, an Integrated Modelling Toolbox, which links models of household decision making with the biophysical toolbox to allow for consideration of socioeconomic and environmental trade-offs of many development and policy scenarios. This paper describes the Integrated Modelling Toolbox within the IWRAM system. …

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Predicting Hydrologic Response From Physio-Climatic Attributes : An Application To Ungauged Sub-Catchments Of The Burdekin River, North Queensland, D. A. Post, B. F. W. Croke Jul 2002

Predicting Hydrologic Response From Physio-Climatic Attributes : An Application To Ungauged Sub-Catchments Of The Burdekin River, North Queensland, D. A. Post, B. F. W. Croke

International Congress on Environmental Modelling and Software

The Burdekin is a large (140,000 km2) catchment located in the dry tropics of North Queensland, Australia. To assess the water resources of this catchment, we require a methodology which will allow us to determine the daily streamflow at any point within the catchment. To this end, we have utilised a simple, lumped parameter model, IHACRES. Of the five parameters in the model, three have been set to default values, while the other two have been related to the physio-climatic attributes of the sub-catchment under consideration. The parameter defining total catchment water yield (c) was constrained using %yield, which is …

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Mesembrioxylon Obscurum, A New Combination For Araucarioxylon? Obscurum Knowlton, From The Upper Jurassic Morrison Formation, Wyoming, David A. Medlyn, William D. Tidwell May 2002

Mesembrioxylon Obscurum, A New Combination For Araucarioxylon? Obscurum Knowlton, From The Upper Jurassic Morrison Formation, Wyoming, David A. Medlyn, William D. Tidwell

Western North American Naturalist

A reinvestigation of the type specimen of Araucarioxylon? obscurum Knowlton (1900) from the Upper Jurassic Morrison Formation in the Freezeout Hills of Wyoming has determined that this fossil should be transferred to Mesembrioxylon Seward (1919) as M. obscurum comb. nov. (Knowlton) Medlyn and Tidwell. Knowlton (1900), who was uncertain of its appropriate generic disposition, tentatively referred the wood to Araucarioxylon because it had obscure growth rings and relatively low ray height. Reexamination of Knowltons slides demonstrates that the wood has uniseriate, rarely biseriate rays, podocarpoid pitting, and diffuse axial parenchyma, none of which Knowlton mentioned. Tracheary pitting is mostly separate, …

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Committee Activities, Hideyuki Morimoto, Teresa Mei, Taemin Park, Fung-Yin Simpson Jun 2001

Committee Activities, Hideyuki Morimoto, Teresa Mei, Taemin Park, Fung-Yin Simpson

Journal of East Asian Libraries

No abstract provided.

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The Selection Of Narrow Wavebands For Optimizing Water Quality Monitoring On The Great Miami River, Ohio Using Hyperspectral Remote Sensor Data Jan 2001

The Selection Of Narrow Wavebands For Optimizing Water Quality Monitoring On The Great Miami River, Ohio Using Hyperspectral Remote Sensor Data

Journal of Spatial Hydrology

Remote sensing data were successfully used to estimate spatial and temporal variation of optical water quality parameters such as chlorophyll a, turbidity and Total Suspended Solids (TSS) of the Great Miami River, Ohio. During the summer of 1999, spectral data were collected with a hand-held spectroradiometer, a laboratory spectrometer and airborne hyperspectral sensors. Approximately 80 km of the Great Miami River were imaged during a flyover with a Compact Airborne Spectrographic Imager (CASI) sensor. Approximately 10 km were imaged during a second flyover to repeat coverage of the urban and industrial influences around the city of Dayton, Ohio. Instream measurements …

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Community Structure Of Eleodes Beetles (Coleoptera: Tenebrionidae) In The Shortgrass Steppe: Scale-Dependent Uses Of Heterogeneity, Nancy E. Mcintyre Jan 2000

Community Structure Of Eleodes Beetles (Coleoptera: Tenebrionidae) In The Shortgrass Steppe: Scale-Dependent Uses Of Heterogeneity, Nancy E. Mcintyre

Western North American Naturalist

Patterns in the community structure of darkling beetle (9 Eleodes spp., Coleoptera: Tenebrionidae) assemblages in the shortgrass steppe of north central Colorado were monitored by live pitfall trapping for 4 summers. There were significant correlations among weather (temperature and precipitation), species richness, and number of individuals per species captured; effects from weather conditions also displayed 1-month and 1-yr delayed effects. Population densities of 2 eleodid species were monitored by mark-recapture methods. Densities of these species varied relatively little among years and sites, although density was correlated with temperature and precipitation. Abiotic influences on both density and richness differed between 2 …

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Full Issue, Vol. 60 No. 1 Jan 2000

Full Issue, Vol. 60 No. 1

Western North American Naturalist

No abstract provided.

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Front Matter, Vol. 59 No. 4 Oct 1999

Front Matter, Vol. 59 No. 4

Great Basin Naturalist

No abstract provided.

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Full Issue, Vol. 59 No. 4 Oct 1999

Full Issue, Vol. 59 No. 4

Great Basin Naturalist

No abstract provided.

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Full Issue, Vol. 59 No. 3 Jul 1999

Full Issue, Vol. 59 No. 3

Great Basin Naturalist

No abstract provided.

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Ecology Of Flannelmouth Sucker In The Lee's Ferry Tailwater, Colorado River, Arizona, Ted Mckinney, William R. Persons, Roland S. Rogers Jul 1999

Ecology Of Flannelmouth Sucker In The Lee's Ferry Tailwater, Colorado River, Arizona, Ted Mckinney, William R. Persons, Roland S. Rogers

Great Basin Naturalist

We investigated ecology of flannelmouth sucker (Catostomus latipinnis) from 1992 to 1997 in the 26-km Lee's Ferry reach of the Colorado River immediately below Glen Canyon Dam, Arizona. We captured by electrofishing a total of 212 fish and recaptured 52 previously tagged by others. Flannelmouth sucker were captured throughout the tailwater but tended to aggregate about 5 km of the dam, possibly reflecting blockage of historic migration routes. Catch per hour of electrofishing did not differ among years but was greater from November to February than other periods, suggesting seasonal movements of flannelmouth sucker into the tailwater. Mean …

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Front Matter, Vol. 59 No. 3 Jul 1999

Front Matter, Vol. 59 No. 3

Great Basin Naturalist

No abstract provided.

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Front Matter, Vol. 59 No. 2 Apr 1999

Front Matter, Vol. 59 No. 2

Great Basin Naturalist

No abstract provided.

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Full Issue, Vol. 59 No. 2 Apr 1999

Full Issue, Vol. 59 No. 2

Great Basin Naturalist

No abstract provided.

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Ole Bruun And Arne Kalland, Eds. Asian Perceptions Of Nature., William H. King Apr 1999

Ole Bruun And Arne Kalland, Eds. Asian Perceptions Of Nature., William H. King

Comparative Civilizations Review

No abstract provided.

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Front Matter, Vol. 59 No. 1 Jan 1999

Front Matter, Vol. 59 No. 1

Great Basin Naturalist

No abstract provided.

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Full Issue, Vol. 59 No. 1 Jan 1999

Full Issue, Vol. 59 No. 1

Great Basin Naturalist

No abstract provided.

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Full Issue, Vol. 58 No. 4 Oct 1998

Full Issue, Vol. 58 No. 4

Great Basin Naturalist

No abstract provided.

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