通过产毒素浮游植物对反复出现的浮游生物水华动态进行建模。

Recurring plankton bloom dynamics modeled via toxin-producing phytoplankton.

作者信息

Chakraborty Subhendu, Chatterjee Samrat, Venturino Ezio, Chattopadhyay J

机构信息

Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata 700108, India.

出版信息

J Biol Phys. 2007 Aug;33(4):271-90. doi: 10.1007/s10867-008-9066-3. Epub 2008 Jun 11.

DOI:10.1007/s10867-008-9066-3

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2646403/

Abstract

A simple nutrient-phytoplankton model is proposed and analyzed in the presence of toxic chemicals released by toxin-producing phytoplankton (TPP) to understand the dynamics of seasonally recurring bloom phenomena. We observe that the presence of toxic chemicals helps to explain the bloom phenomenon. We have further studied our proposed system by varying the toxin liberation rate. Our model displays a wide range of dynamical behaviours, from simple cyclical blooms to irregular chaotic blooms. We also observe skipping phenomenon. The effect of toxic chemicals released by TPP cannot, thus, be ignored in 'bottom-up' models.

摘要

提出并分析了一个简单的营养物-浮游植物模型，该模型考虑了产毒素浮游植物（TPP）释放的有毒化学物质，以了解季节性反复出现的水华现象的动态变化。我们观察到有毒化学物质的存在有助于解释水华现象。我们通过改变毒素释放率进一步研究了我们提出的系统。我们的模型展示了广泛的动力学行为，从简单的周期性水华到不规则的混沌水华。我们还观察到跳跃现象。因此，在“自下而上”的模型中，TPP释放的有毒化学物质的影响不能被忽视。

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