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Carex nigricans Seasonally Flooded Herbaceous Alliance | Western Ecology Working Group of...
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Name: Carex nigricans Seasonally Flooded Herbaceous Alliance
Reference: Western Ecology Working Group of...
Description: Vegetation types within this seasonally flooded, temperate or subpolar grassland alliance occur on meadows, streambanks, and depressions in subalpine and alpine areas. Elevations range from 1750-2150 m in the Cascade Range, and from 3210-3540 m in Colorado. Sites typically are small depressions located below late-melting snowpatches on eastern slopes. Habitats are mostly southeast-facing and gently inclined (0-22%), 3-4 months snow-free, and well-stabilized. Soils are poorly drained with some peaty soil development. Soil pH levels range from 4.2-5.1. Carex nigricans forms a low, dominant mat with high average cover and frequency. Other prominent species in the Washington stands are Luetkea pectinata and Vahlodea atropurpurea (= Deschampsia atropurpurea). Polytrichum lyallii (= Polytrichadelphus lyallii), Pseudoleskea radicosa (= Lescuraea radicosa), and the lichen Lepraria neglecta are important cryptograms in the Washington stands. Phleum alpinum is a codominant in Colorado. Other constants are Deschampsia caespitosa and Juncus drummondii. The moss layer in the Colorado stands is poorly developed. Carex nigricans is likely to form pure stands next to melting snowdrifts. 
Accession Code: VB.CC.19561.CAREXNIGRICANSS
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 01-May-2019
     
  • status: accepted
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: Carex nigricans Seasonally Flooded Herbaceous Alliance
  Translated: Black Alpine Sedge Seasonally Flooded Herbaceous Alliance
  UID: HIGHER_CLASS_UNIT.2.125412 NatureServe ExplorerNatureServe Explorer logo
  Code: A.1418