Short-term Recurrent Chaos and Role of Toxin Producing Phytoplankton (TPP) on Chaotic Dynamics in Aquatic Systems

Abstract

We propose a new mathematical model for aquatic populations. This model incorporates mutual interference in all the three populations and an extra mortality term in zooplankton population and also taking into account the toxin liberation process of TPP population. the proposed model generalizes several other known models in the literature. the principal interest in this paper is in a numerical study of the model's behaviour. It is observed that both types of food chains display same type of chaotic behaviour, short-term recurrent chaos, with different generating mechanisms. Toxin producing phytoplankton (TPP) reduces the grazing pressure of zooplankton. to observe the role of TPP, we consider Holling types I, II and III functional forms for this process. Our study suggests that toxic substances released by TPP population may act as bio-control by changing the state of chaos to order and extinction. © 2007 Elsevier Ltd. All rights reserved.

Department(s)

Electrical and Computer Engineering

International Standard Serial Number (ISSN)

0960-0779

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

28 Feb 2009

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