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Open Access item Sustained plankton blooms under open chaotic flows

Authors:Hernández-García, Emilio
López, Cristóbal
Keywords:Predator–prey dynamics, Chaotic flows, Plankton blooms, Excitability
Issue Date:1-Sep-2004
Citation:Ecological Complexity 1(3): 253-259 (2004)
Abstract:We consider a predator-prey model of planktonic population dynamics, of excitable character, living in an open and chaotic fluid flow, i.e., a state of fluid motion in which fluid trajectories are unbounded but a chaotic region exists that is restricted to a localized area. Despite that excitability is a transient phenomenon and that fluid trajectories are continuously leaving the system, there is a regime of parameters where the excitation remains permanently in the system, given rise to a persistent plankton bloom. This regime is reached when the time scales associated to fluid stirring become slower than the ones associated to biological growth.
Description:7 pages (final publisher version), 15 pages, 3 figures (attached post-print version).-- ArXiv pre-print available: http://arxiv.org/abs/nlin/0311054
Publisher version (URL):http://dx.doi.org/10.1016/j.ecocom.2004.05.002
Appears in Collections:(IFISC) Artículos

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