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Toxin-allelopathy among phytoplankton species prevents competitive exclusion

Roy, S. ORCID: and Chattopadhyay, J. (2007) Toxin-allelopathy among phytoplankton species prevents competitive exclusion. Journal of Biological Systems, 15 (1). pp. 73-93. ISSN 1793-6470

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To link to this item DOI: 10.1142/S021833900700209X


Toxic or allelopathic compounds liberated by toxin-producing phytoplankton (TPP) acts as a strong mediator in plankton dynamics. On an analysis of a set of phytoplankton biomass data that have been collected by our group in the northwest part of the Bay of Bengal, and by analysis of a three-component mathematical model under a constant as well as a stochastic environment, we explore the role of toxin-allelopathy in determining the dynamic behavior of the competing phytoplankton species. The overall results, based on analytical and numerical wings, demonstrate that toxin-allelopathy due to the TPP promotes a stable co-existence of those competitive phytoplankton that would otherwise exhibit competitive exclusion of the weak species. Our study suggests that TPP might be a potential candidate for maintaining the co-existence and diversity of competing phytoplankton species.

Item Type:Article
Divisions:Science > School of Archaeology, Geography and Environmental Science > Department of Geography and Environmental Science
ID Code:36886
Publisher:World Scientific

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