Harvesting Models for Resource-Limited Populations
'Extensive' herbivore/vegetation models and 'intensive' grazing models yield two conclusions for sustained-yield harvesting of populations regulated by an interaction with their resources. First, the growth curve for the population, relating growth rate to current density, and the equilibrium yield/effort curve under harvesting, are likely to be asymmetric, with peaks displaced to the right and maximum growth rate and harvest greater then predicted by the symmetrical, single-species logistic model.