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Isocoma acradenia Shrubland | Western Ecology Working Group of...
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Name: Isocoma acradenia Shrubland Reference: Western Ecology Working Group of... Description: This goldenbush shrubland association is currently described from Grand Canyon National Park and Grand Canyon-Parashant National Monument in Arizona. More survey and classification work are needed to fully characterize this type. It occurs in low-level drainage channels and valley bottoms, and on adjacent benches and terraces, typically in areas which receive additional moisture compared to adjacent habitats. It occurs at 400 to 1100 m (1300-3750 feet) elevation, on gentle slopes (2-5°), across all aspects. Soils are sandy or sometimes silty, often alkaline, and moderately well-drained; cryptogamic soil crust is relatively common. <i>Isocoma acradenia</i> characterizes this association and dominates the short-shrub layer. <i>Tamarix ramosissima</i> and <i>Acacia greggii</i> occasionally occur as associates in the tall-shrub stratum, while various short shrubs, including <i>Encelia farinosa, Bebbia juncea, Baccharis emoryi, Ephedra fasciculata, Salix exigua</i>, and <i>Trixis californica</i>, may sporadically occur. Dwarf-shrubs are essentially lacking in this community, although <i>Gutierrezia sarothrae</i> occasionally occurs. The graminoid layer is fairly sparse, quite variable, and may include <i>Aristida purpurea, Sporobolus cryptandrus</i>, and <i>Sporobolus flexuosus</i>, as well as the non-natives <i>Bromus rubens</i> and <i>Bromus tectorum</i>. Forbs are similarly sparse and variable; <i>Artemisia ludoviciana, Thymophylla pentachaeta</i>, and <i>Aletes macdougalii</i> are somewhat common.  Accession Code: VB.CC.31656.CEGL005395 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.841797 NatureServe Explorer   Translated: Alkali Goldenbush Shrubland   Scientific: Isocoma acradenia Shrubland   Code: CEGL005395