FIRE ECOLOGY
SPECIES: Ambrosia deltoidea | Triangle Bursage 



FIRE ECOLOGY OR ADAPTATIONS : 
Because triangle bursage establishes in open spaces, it survives fires
that burn with a mosaic pattern [26].

Although triangle bursage seedlings establish after fire, the literature
does not mention whether the seed originates on- or off-site.

Fires occur frequently in the desert grassland at the eastern margin of
the Sonoran Desert.  Fires in the desert proper, however, are infrequent
and generally of low severity because production of annual and perennial
herbs seldom provides a fuel load capable of sustaining fire [18].
Fires occur occasionally in the Sonoran Desert, mostly in the Arizona
Upland where the biannual rainfall produces relatively lush rangeland
[23,26].  Following a moist year, the desert floor is covered with
sufficient annual plant fuel and litter to carry a fire [23].  When
winter annuals thrive, fire is more likely [2,17].  Exotic annuals may
be more productive than native species and fuel more frequent, more
severe fires [2].




POSTFIRE REGENERATION STRATEGY : 
NO-ENTRY

Related categories for Species: Ambrosia deltoidea | Triangle Bursage