Dominated by perennial grasses (to 70 cm tall) and low, often succulent, perennial herbs and subshrubs (about 10 cm tall). Coverage varies from nearly complete to scattered. The species typically are zoned with Abronia, Ambrosia, and Cakile usually occurring in the sites most exposed to the wind and Calystegia and Camissonia in more sheltered sites. Growth and flowering are most active in late spring and early summer, but continue at a reduced rate all year.
SITE FACTORS:
Usually foredunes, but upper beaches may be similar. Similar to Active Coastal Dunes (21100), but with less wind and/or a smaller supply of sand and/or more available groundwater. The relatively favorable conditions allow the establishment of plants which reduce the amount of blowing sand and partially stabilize the dunes. Drainage is rapid, but the deeper zones may be relatively moist. Plants are subject to dessicating, salt-bearing winds. May intergrade with Active Coastal Dunes toward the coast or with Northern Dune Scrub (21310) on more stabilized dunes away from the coast.
DISTRIBUTION:
Areas of sand accumulation along the coast, including all locations where Active Coastal Dunes (21100) occur and many less extensive areas as far south as Monterey Point Conception.
UPDATE: 11/97
Source: Holland, 1986
Digital Text: NatureBase