Vegetation Classification and Mapping Project Report - USGS

Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park
Vegetation description:
Globally. This association has only been described from Petrified Forest National Park. Until further inventory is
completed, there is no global information.
Petrified Forest National Park. Fifteen accuracy assessment relevés were identified as Sarcobatus vermiculatus
/ Atriplex obovata Shrubland. Cover of Sarcobatus vermiculatus ranged from 5 to 25%. Co-dominant plants were
the dwarf native shrub Atriplex obovata (cover 1 to 25%) and the native grass Sporobolus airoides (cover 1 to 75%).
Species diversity among the relevés ranged from 3 to 9 species. Sarcobatus vermiculatus was co-dominant with the
native dwarf-shrub Atriplex obovata. The association was found generally on saline and alkaline soils and in areas
with periodic sheet flow, often near a wash system.
Most abundant species:
Stratum Global species PEFO species
Shrub.(field) Data are not available. Sarcobatus vermiculatus
Other noteworthy species:
Global species
Data are not available.
PEFO species
Atriplex obovata, Sporobolus
airoides, Suaeda moquinii
References:
Data are not available.
C56