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https://en.wikipedia.org/wiki/Desert_dry_wash
Desert dry wash
is a North American desert vegetation type (or biome) occurring in the
flat bottoms of canyons and drainages that lack water at or near the
surface most of the year, and are subject to periodic severe flooding
events. Desert dry wash is contrasted with desert riparian vegetation, which occurs in desert ...
https://en.wikipedia.org/wiki/Category:Washes_of_California
Alma Wash
· Arroyo Conejo · Arroyo Seco (Alameda County) · Arroyo Seco (Los
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Desert dry wash
From Wikipedia, the free encyclopedia
Desert dry wash is a North American desert
vegetation type (or
biome)
occurring in the flat bottoms of canyons and drainages that lack water
at or near the surface most of the year, and are subject to periodic
severe flooding events.
[1] Desert dry wash is contrasted with
desert riparian vegetation, which occurs in desert canyons and drainages where there is year-round water at or near the surface.
[1]
Plants must either be able to survive the severe flooding conditions or
be able to reestablish themselves before the next flooding event.
[1]
Some of these plants have evolved so that in order for their seeds to
germinate, the seeds must be scarified or abraded by tumbling sand,
gravel, and rocks during the flooding event.
[1]
They must then quickly send down roots deep enough to be able to tap
into deep underground water reserves, in order to survive the dry period
after the flooding.
[1] Common dominant species of the desert dry wash include smoke tree (
Psorothamnus spinosus), desert willow (
Chilopsis linearis), catclaw (
Senegalia greggii), cheesebush (
Ambrosia salsola), and waterweed (
Baccharis sergiloides).
[1]
References
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