  A simple characterization of the action of symmetries on conservation laws of
partial differential equations is studied by using the general method of
conservation law multipliers. This action is used to define symmetry-invariant
and symmetry-homogeneous conservation laws. The main results are applied to
several examples of physically interest, including the generalized Korteveg-de
Vries equation, a non-Newtonian generalization of Burger's equation, the
b-family of peakon equations, and the Navier-Stokes equations for compressible,
viscous fluids in two dimensions.
