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Related Experiment Video

Updated: Jun 3, 2026

An Ultra-clean Multilayer Apparatus for Collecting Size Fractionated Marine Plankton and Suspended Particles

An Ultra-clean Multilayer Apparatus for Collecting Size Fractionated Marine Plankton and Suspended Particles

Published on: April 19, 2018

Resonant plankton patchiness induced by large-scale turbulent flow.

William J McKiver¹, Zoltán Neufeld

¹School of Mathematical Sciences and Complex and Adaptive Systems Laboratory, Dublin, Ireland.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|March 17, 2011

Summary

Mesoscale turbulence significantly impacts oceanic plankton variability. Phytoplankton show maximum variability at intermediate mixing rates due to resonance between turbulent flow and predator-prey dynamics.

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Area of Science:

Oceanography
Ecological Modeling
Fluid Dynamics

Background:

Oceanic plankton exhibit large-scale variability influenced by environmental factors.
Mesoscale turbulence plays a crucial role in nutrient and organism transport.
Understanding plankton dynamics is vital for marine ecosystem health.

Purpose of the Study:

To investigate the effect of mesoscale turbulence on phytoplankton-zooplankton (PZ) ecosystem variability.
To analyze how spatial heterogeneity and turbulent flow influence plankton population dynamics.
To identify the relationship between ecosystem and flow time scales and their impact on plankton variance.

Main Methods:

Coupling a phytoplankton-zooplankton ecosystem model with a 2D Navier-Stokes turbulent flow simulation.
Utilizing numerical simulations to explore the system's behavior across varying time-scale ratios (γ).
Employing linearized population dynamics and forced harmonic oscillator analysis.

Main Results:

Plankton variance significantly changes with the time-scale ratio (γ).
Maximum phytoplankton variability occurs at intermediate mixing rates.
Resonance between advection and predator-prey dynamics explains ecosystem behavior.
Distinct spectral slopes for phytoplankton and zooplankton observed, matching field observations.

Conclusions:

Mesoscale turbulence can drive significant variability in oceanic plankton populations.
The ratio of biological to flow time scales is a critical parameter influencing ecosystem dynamics.
Resonant interactions between turbulence and biological processes lead to predictable patterns in plankton power spectra.