Regional economic impacts of a plant disease incursion using a general equilibrium approach
The present study uses a dynamic multiregional computable general equilibrium (CGE) model to estimate the micro- andmacroeconomic effects of a hypothetical disease or pest outbreak. Our example is a Karnal bunt incursion in wheat in Western Australia. The extent of the incursion, the impact of the disease or pest on plant yields, the response of buyers, the costs of eradication and the time path of the scenario contribute to outcomes at the industry, regional, state and national levels. We decompose the contribution of these individual direct effects to the overall impact of the incursion. This might provide some guidance regarding areas for priority in attempting to eradicate or minimise the impacts of a disease or pest. The study also introduces a theory of dynamic regional labour adjustment in which economic events may lead to both real wage differentials and worker migration between regions.
Volume (Year): 49 (2005)
Issue (Month): 1 (March)
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"On the Need for More Economic Assessment of Quarantine/SPS Policies,"
CEPR Discussion Papers
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Australian Journal of Agricultural and Resource Economics,
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- Philip D. Adams & Mark Horridge & Glyn Wittwer, 2003. "MMRF-GREEN: A Dynamic Multi-Regional Applied General Equilibrium Model of the Australian Economy, Based on the MMR and MONASH Models," Centre of Policy Studies/IMPACT Centre Working Papers g-140, Victoria University, Centre of Policy Studies/IMPACT Centre.
- Mark Horridge & John Madden & Glyn Wittwer, 2003. "Using a highly disaggregated multi-regional single-country model to analyse the impacts of the 2002-03 drought on Australia," Centre of Policy Studies/IMPACT Centre Working Papers g-141, Victoria University, Centre of Policy Studies/IMPACT Centre.
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