The Human System is within the Earth System. They should be modeled bidirectionally
coupled, as they are in reality. The Human System is rapidly expanding, mostly due to …

This paper introduces a novel general model based on Ordinary Differential Equations
(ODEs) which is able to describe the population dynamics of a large class of insect pests …

A general population model with variable carrying capacity consisting of a coupled system of
nonlinear ordinary differential equations is proposed, and a procedure for obtaining …

This work deals with a prey–predator model in an environment where the carrying capacities
are assumed to be variable with time and one species feeds upon the other. Independent …

Carrying capacity estimations for any population of organisms is made in order to determine
the maximum population densities that could result under set environmental conditions …

The environmental carrying capacity is usually assumed to be fixed quantity in the classical
predator–prey population growth models. However, this assumption is not realistic as the …

In the present study, we propose a modified form of the Rosenzweig–MacArthur model by
incorporating prey harvesting and variable carrying capacity. These modifications are …

A minimal stochastic generalization of a deterministic open-ended logistic growth model is
proposed for efficiently describing the biological growth of individual organisms under …

Over the history of humankind, cultural innovations have helped improve survival and
adaptation to environmental stress. This has led to an overall increase in human population …

Classical population growth models assume that the environmental carrying capacity is a
fixed parameter, which is not often realistic. We propose a modified predator-prey model …