Based on economic methodology we model an ecosystem with two species in predator-prey relationship: mice feed on grain and grain feeds on a resource. With optimizing behaviour of individual organisms a short-run ecosystem equilibrium is defined and characterized that depends on the farmer's use...

This paper introduces a new specification to the economic pest management literature designed to optimally manage vector-virus-plant interactions for a single crop. The viral, insect-vector, and plant-host stocks are treated as renewable resources and conjunctively controlled in a discrete-time...