  Implications of recently discovered effect of channeling of upstream extra
particles for transport phenomena in a two-dimensional plasma crystal are
discussed. Upstream particles levitated above the lattice layer and tended to
move between the rows of lattice particles. An example of heat transport is
considered, where upstream particles act as moving heat sources, which may lead
to anomalous heat transport. The average channeling length observed was 15 - 20
interparticle distances. New features of the channeling process are also
reported.
