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Sporobolus cryptandrus Shrub Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Sporobolus cryptandrus Shrub Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: This late-seral association has a bimodal distribution, being recorded for both the northernmost portion of the Bighorn Basin Section (342A) in Montana and the lowest elevations of Hells Canyon within the Blue Mountains Section (M332) in Idaho. In the Hells Canyon vicinity it is associated with dry alluvial bars and stream terraces, whereas in Montana it has been described from a single, sandy-soil valley bottom location. Sporobolus cryptandrus, a mid-sized bunchgrass associated with sandy and most especially excessively drained soils, dominates the herbaceous layer (30-50% canopy cover) in mid- to late-seral (good condition) stands; its cover may be much reduced in early-seral (poor condition) stands as a result of livestock grazing. Beyond Sporobolus cryptandrus dominance, there is not much similarity in the vegetation composition between the Montana and Hells Canyon sites, though both locations do have low forb cover and diversity. Weedy species are present in both areas; Halogeton glomeratus in Montana, and annual bromes and Hypericum perforatum in Hells Canyon/Snake River sites. Hells Canyon sites also have a discontinuous bryophyte layer. Sporobolus cryptandrus Shrub Herbaceous Vegetation (CEGL001514) differs from Sporobolus cryptandrus - Poa secunda Herbaceous Vegetation (CEGL001516) and Pseudoroegneria spicata - Poa secunda Herbaceous Vegetation (CEGL001677) by lacking both Poa secunda and Pseudoroegneria spicata, and occurring only in canyon bottom sites, on terraces with excessively drained soils.  Accession Code: VB.CC.22888.SPOROBOLUSCRYPT Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Sporobolus cryptandrus Shrub Herbaceous Alliance This Community's Level: Association This Community's Children: [none]		Names:   Code: CEGL001514   Translated: Sand Dropseed Shrub Herbaceous Vegetation   UID: ELEMENT_GLOBAL.2.686294 NatureServe Explorer   Scientific: Sporobolus cryptandrus Shrub Herbaceous Vegetation   Common: Sand Dropseed Shrub Prairie (convergence) and Synonyms: (undetermined) Sporobolus cryptandrus Shrub Herbaceous Vegetation