  While the linear behavior of gravity in braneworld models is well understood,
much less is known about full non-linear gravitational effects. Even when they
agree at the linear level, these could be expected to distinguish braneworlds
from a lower-dimensional theory with no brane. Black holes are a good testing
ground for such studies, as they are nonlinear solutions that would be expected
to reflect the background geometry. In particular, we assess the role of black
hole quasinormal modes in gravitational experiments devised to be sensitive to
the existence of the brane, in a lower-dimensional setting where we have
analytical control. We compute quasinormal modes of brane-localized black holes
and find that they follow the entropy of the corresponding black hole. This
observation allows us to conclude that, surprisingly, the scattering problem we
consider, at least in some regimes, does not distinguish between non-linear
gravitational effects of black holes in AdS space with a brane and black holes
in a spacetime of one lower dimension.
