  We discuss the origins of temperature dependence of the axial vortical
effect, i.e. generation of an axial current in a rotating chiral medium along
the rotation axis. We show that the corresponding transport coefficient
depends, in general, on the number of light weakly interacting degrees of
freedom, rather than on the gravitational anomaly. We also comment on the role
of low-dimensional defects in the rotating medium, and appearance of the chiral
vortical effect due to them.
