The ecology of Pacific Northwest coastal sand dunes

They begin with sand accumulating in of the covering sand, increasing in
the stems and leaves of the plant size and causing more sand to be
and eventuall~ covering it- The deposited. Species such as yellow
f oll owi ng Season the plant grows out sandverbena (Abronia 1 ati f 01 ia) ,
Figure 19. Parabola dunes at, Sand Lake, Locality 9. The view is southwestward
with tiaystacl< ~ock the distance- The first and second parabola dunes
(see Appendix 11) are visible. Hate the &flation plain at the windward base
of the first dune and the ephemeral pond at the base? of the lee sl ipface. The
second dune has built up very high because of tne constricting vegetation. As
if: advances, the sand channel wbl1 be widened* August, 1983. (Photograph by
Art Hare.)