Strong fluctuations and cycling in biological systems

Wednesday, November 7, 2007 - 11:15am - 12:15pm
Lind 409
Timothy Newman (Arizona State University)
In this talk I describe a mechanism for generating cycles in a large class of mesoscale biological populations (meaning populations composed of thousands to tens of thousands of units). Cycles are caused by a resonant amplification of the system dynamics triggered by internal noise. I will discuss this mechanism in the context of two classes of simple systems: ecological (e.g. predator-prey, host- pathogen) and biochemical (e.g. small gene regulation networks, modules of metabolic processes).