On Wednesday 14th of February at 4pm in the MathLab, Eric Siero (Wageningen) will give an Amsterdam Dynamics seminar.
The talk will take place in the Maryam seminar room (9A-46) and everyone is welcome to join for drinks at Bar Boele after the talk.
Title: Busse balloon Barbapapa
Abstract: Spatial self-organisation arises in many contexts. A classical example is Rayleigh-Bénard convection: when the temperature between a warmed bottom plate and a cooler top plate grows beyond a certain threshold, convection cells form. The heat transport increases significantly due to the self-organised flow. Busse balloons are a (graphical) representation of these patterns.
A prominent example in ecology is dryland vegetation. If yearly precipitation is below some critical value, patterns emerge with a wavelength of tens of meters. These patterns have paradoxically been interpreted as both 1) early-warning signals of complete desertification and 2) a way of the ecosystem to adapt to drought. In this talk, we will manipulate a Klausmeier-type reaction-diffusion model and see how the shape of the corresponding Busse balloon changes. The shape of the Busse balloon is then used to infer ecosystem response to increased drought.