Selforganised patterns of vegetation are a characteristic
feature of
many semiarid regions. In particular, banded vegetation is typical on
hillsides. Mathematical modelling is widely used to study these banded
patterns,
because there are no laboratory replicates. I will describe the
development of spatial patterns in an established model for banded
vegetation via a Turing bifurcation. I will discuss numerical
simulations of the phenomenon, and I will summarise nonlinear analysis
on the existence
and form of spatial patterns as a function of the model parameter that
corresponds to mean annual rainfall.
