Nonlinear Processes in Oceanic and Atmospheric Flows

Presentation

Statistical Properties of plankton ecosystems in turbulent flows

Author: William McKiver, University College Dublin.

Names and affiliation of other authors:
Name: Zoltan Neufeld
Affiliation: University College Dublin

Oral or poster: Poster

Downloadable poster file:

Statistical Properties of plankton ecosystems in turbulent flows

(poster.pdf, 547521 bytes)

Abstract:
In this work we study a plankton ecosystem model in a turbulent flow. The plankton model we consider contains logistic growth with a spatially varying background carrying capacity and the flow dynamics are generated using the two-dimensional (2D) Navier-Stokes equations. We characterise the system in terms of a dimensionless parameter that is the ratio of the ecosystem biological timescales and the flow timescales. We integrate this system numerically for different values of the timescale ratio parameter until the mean plankton reaches a statistically stationary state and examine how the steady state mean and variance of plankton depends on this timescale ratio.

*Satellite images from NASA and ESA

Nonlinear Processes in Oceanic and Atmospheric Flows. July 2-4, 2008. Castro Urdiales, Cantabria, Spain.