The framework presents how trading in the foreign commodity futures and domestic forward foreign exchange markets can affect the optimal spot positions of domestic commodity producers and traders. It generalizes the models of Kawai and Zilcha (1986) and Kofman and Viaene (1991) to allow both...

We postulate that the causes of the problem of invasive alien species are primarily economic and as such, require economic solutions. Invasive alien species are of increasing concern for four reasons. First, introductions are increasing sharply, while mechanisms for excluding or eradicating...