Title

Nutrient-plankton models with nutrient recycling

Document Type

Article

Date of Original Version

1-1-2005

Abstract

In this paper, nutrient-phytoplankton-zooplankton interaction with general uptake functions in which nutrient recycling is either instantaneous or delayed is considered. To account for higher predation, zooplankton's death rate is modeled by a quadratic term instead of the usual linear function. Persistence conditions for each of the delayed and nondelayed models are derived. Numerical simulations with data from the existing literature are explored to compare the two models. It is demonstrated numerically that increasing zooplankton death rate can eliminate periodic solutions of the system in both the instantaneous and the delayed nutrient recycling models. However, the delayed nutrient recycling can actually stabilize the nutrient-plankton interaction. © 2005 Elsevier Ltd. All rights reserved.

Publication Title

Computers and Mathematics with Applications

Volume

49

Issue

2-3

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