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Kobresia myosuroides - Carex rupestris var. drummondiana Alpine Turf | NatureServe Biotics 2019
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Name: Kobresia myosuroides - Carex rupestris var. drummondiana Alpine Turf Reference: NatureServe Biotics 2019 Description: This association is a major upland alpine turf community of the southern Rocky Mountains. Sites are typically dry-mesic meadows and turf in the middle to lower alpine, which may extend into transition areas with fell-fields. Stands often occur on gentle to moderate, convex slopes (1-30%) and saddles, typically with NE-NW aspects that are exposed to prevailing winds which keep sites snow-free during most of the winter. Soils are relatively deep (0.5-1 m) and well-developed for alpine environments. Soils are fine to coarse loams typically with distinct soil horizons present that indicate long periods without significant disturbance. There is often low to moderate (to 50 %) cover of large and small surface rocks. Bare ground cover is generally low but can be moderately high in transition areas with fell-fields, which have more xeric with less developed, coarser textured soils than typical <i>Kobresia myosuroides</i>-dominated alpine turf. Vegetation is characterized by a moderately dense to dense (50-90% cover) herbaceous layer codominated by the cespitose perennial graminoids <i>Kobresia myosuroides</i> and <i>Carex rupestris var. drummondiana</i> that form a dense turf. If present, <i>Geum rossii, Thalictrum alpinum</i>, and <i>Trifolium dasyphyllum</i> do not codominate. <i>Minuartia obtusiloba</i> and/or <i>Selaginella densa</i> are often present and may codominate some stands. Other important species with lower cover include graminoids <i>Calamagrostis purpurascens, Carex elynoides, Carex scopulorum, Festuca brachyphylla, Poa glauca ssp. rupicola</i>, and forbs <i>Arenaria fendleri, Campanula uniflora, Castilleja occidentalis, Lloydia serotina, Mertensia lanceolata, Tetraneuris grandiflora, Oreoxis alpina, Polygonum bistortoides, Polygonum viviparum, Sedum lanceolatum</i>, and <i>Silene acaulis</i>. Diagnostic of this association is the dominance of <i>Kobresia myosuroides</i> and <i>Carex rupestris var. drummondiana</i> in a dense alpine turf.  Accession Code: urn:lsid:vegbank.org:commConcept:30816-{F1B7BFC4-674B-47EB-89DC-F7DB7CADA7BB} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 02-Aug-2005 to: ongoing
	status: accepted Community's Parent: Carex elynoides - Carex rupestris - Kobresia myosuroides Rocky Mountain Alpine Turf Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687438 NatureServe Explorer   Code: CEGL001907   Translated: Bellardi Bog Sedge - Drummond's Sedge Alpine Turf   Scientific: Kobresia myosuroides - Carex rupestris var. drummondiana Alpine Turf (convergence) and Synonyms: (similar) Kobresia myosuroides - Carex rupestris var. drummondiana Herbaceous Vegetation (similar) Kobresia myosuroides - Carex rupestris var. drummondiana Herbaceous Vegetation (similar) CEGL001907