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Life at High Reynolds Number

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If you have a question about this talk, please contact Mustapha Amrani .

Understanding Microbial Communities; Function, Structure and Dynamics

Microorganisms living in the ocean can be subject to strong turbulence, with cell division times in the middle of a cascade of eddy turnover times. We explore the dynamics of a Fisher equation describing cell proliferation in one and two dimensions, with cellular diffusion as well as a coupling to turbulent advection. Due to inertial effects and cell buoyancy, we argue that the effective advecting velocity field is compressible. For strong enough compressible turbulence, microorganisms such as bacteria and phytoplankton track, in a quasilocalized fashion, sinks in the turbulent velocity field, with important consequences for the carrying capacity and for fixation times when two genetically different species compete

This talk is part of the Isaac Newton Institute Seminar Series series.

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https://www.eventbrite.co.uk/e/124685490659 Room W4.03 Judge Business School Teaching Room 1, Old Divinity School, St. John's Street. CB2 1TP

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