We formulate an alternative form of threshold harvesting and investigate its properties within
the framework of a predator–prey model. Our formulation accounts for economic constraints …

The dynamics of a predator-prey model with continuous threshold policy harvesting
functions on the prey is studied. Theoretical and numerical methods are used to investigate …

The dynamics of a predator–prey model with continuous threshold prey harvesting and prey
refuge is studied. One central question is how harvesting and refuge could directly affect the …

This article investigates continuous and impulsive threshold harvesting strategies on the
predator which needs to be applied only when the predator population is above or reaches …

Considering a good pest control program should reduce the pest to levels acceptable to the
public, we investigate the threshold harvesting policy on pests in two predator–prey models …

The dynamics of a ratio-dependent predator-prey model with two different non-constant
harvesting functions depending on the predator population is studied. Equilibria and …

In this paper, we propose a tritrophic predator–prey model with harvesting where the top-
predator population is partially supported with alternative food. We report the consequences …

A predator–prey model was extended to include nonlinear harvesting of the predator guided
by its population, such that harvesting is only implemented if the predator population …

The dynamics of constant harvesting of a single species has been studied extensively within
the framework of ratio-dependent predator-prey models. In this work, we investigate the …

The objective of this paper is to study systematically the dynamical properties of a ratio-
dependent predator–prey model with nonzero constant rate predator harvesting. It is shown …