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Integration of Economic Values in Biophysical Models PhD research Marit Ellen Kragt Supervisors: Jeff Bennett (Crawford), Tony Jakeman (Fenner), Lachlan.

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Presentation on theme: "Integration of Economic Values in Biophysical Models PhD research Marit Ellen Kragt Supervisors: Jeff Bennett (Crawford), Tony Jakeman (Fenner), Lachlan."— Presentation transcript:

1 Integration of Economic Values in Biophysical Models PhD research Marit Ellen Kragt Supervisors: Jeff Bennett (Crawford), Tony Jakeman (Fenner), Lachlan Newham (Fenner)

2 Issue  Trade-offs between 1.Changes in catchment management 2.Impacts on river condition 3.Costs and benefits for local landholders, industries and society

3 Issue Need for improved knowledge Impacts of catchment management changes on river and estuary conditions (WQ and ecology) Market effects on downstream industries Non-market effects on households

4 Research objective Develop an integrated model of the hydrological, ecological and economic systems impacted by alternative management actions, focusing on river and estuary water quality

5 Case study  Integrated modelling exercise for George River catchment, Tasmania

6 Methodology  Biophysical modelling (hydrology, riparian buffers, pathogens)  Ecological modelling (riparian zone, fish, oyster)  Economic modelling (market values, non-market valuation)  Integration using a Bayesian Network Approach

7 Challenges  Limited data and models available  Compatibility between ecological indicators and economic attributes  Specific issues in CM (e.g. discontinuous choices)  INTEGRATION

8 Integration – Bayesian Networks  Linking multiple systems  Accounting for uncertainty through probabilistic approach  Allowing for different data sources

9 Progress and further steps  Progress Erosion model development Riparian and pathogen assessment Conceptual Bayesian Network Draft CM survey pretested  And now Finish biophysical modelling Expert interviews to assess Bayesian Network Revision and testing of CM survey

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