Populations in Fluids and the Importance of Diffusing Faster
Dr. Simone Pigolotti
Universitat Politècnica de Catalunya, Spain

I will present a spatial individual-based model describing competition between two bacterial species in a fluid environment.  When the two species reproduce at the same rate, but diffuse at different speed, I will show that stochastic fluctuations lead to a selective advantage for the fastest species. When competing individuals are transported by a fluid flow, as in the case of marine populations, the outcome of competition is radically altered, leading to a novel coexistence scenario.



S. Pigolotti and R. Benzi, Phys. Rev. Lett. 112, 188102, 2014
S. Pigolotti, R. Benzi, P. Perlekar, M.H. Jensen, F. Toschi, and D.R. Nelson, Theo. Pop. Biol. 84:72-86, 2013
S. Pigolotti, R. Benzi, M. H. Jensen, D. R. Nelson, Phys. Rev. Lett. 108, 128102, 2012

About the Speaker

Personal Homepage: http://www.nbi.dk/~pigo/research.html

2016-09-02 10:00 AM
Room: A203 Meeting Room
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