1. We analysed time-series data from populations of red kangaroos (Macropus rufus, Desmarest) inhabiting four areas in the pastoral zone of South Australia. We formulated a set of a priori models to disentangle the relative effects of the covariates: rainfall, harvesting, intraspecific...

A general dynamic model of fishing under harvest share contracts is developed. Vessel owners hire fishermen to work on the vessels and pay them a share of the catch and an additional wage. The harvest rate depends on labor input, capital input, and stock level. Neither of the agents is...