Harvest efficiency in the production functions of fisheries should increase over time with the introduction of new technology and with increasing knowledge of the biology and behaviour of the target species. This implies that the estimated catchability coefficients of Gordon-Schaefer or Fox...

Using a simple model of the world canola market, this paper explores the consequences of the introduction of GM canola on prices, production and consumer welfare. In particular, the model contains heterogeneous consumers who differentiate between GM and non-GM canola, but who can be captured by...

Fluctuating annual harvest volumes create a peak load problem in the provision of grain storage capacity. There are a number of technologies for handling and storing grain, ranging from capital intensive to labour intensive. Optimal provision of grain storage capacity can therefore be analysed...