A guide to central place effects in foraging.

摘要: We develop a general patch-use model of central place foraging, which subsumes and extends several previous models. The produces catalog effects predicting how distance from influences the costs benefits load-size, quitting harvest rates, giving-up densities. In model, we separate between that are load-size dependent, i.e. direct effect size load, independent effects, such as correlations patch qualities. also distinguish predictions between- within-environment comparisons. Foraging costs, densities rates should almost always increase with these amplified by increases in metabolic predation risk load-costs. With respect to load-size: when comparing foraging patches within an environment, often expect smaller loads be taken distant (negative distance-load correlation). However, environments, there positive correlation average load-size.