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Arctic Scree, Rock & Cliff Barrens Macrogroup | NatureServe Biotics 2019
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Name: Arctic Scree, Rock & Cliff Barrens Macrogroup
Reference: NatureServe Biotics 2019
Description: This macrogroup occurs on talus- and bedrock-dominated sites on cliffs and rocky outcrops, and on sparsely vegetated rocky floodplains in the Arctic regions of North America. Sites are well-drained to excessively drained, rocky, and with little soil development. Sites may also occur on early-seral alpine sites near glaciers. The rocky substrate is sparsely vegetated, typically with &lt;10% vascular cover and variable cover of mosses and lichens. Vascular species include forbs and graminoids such as <i>Draba</i> spp., <i>Saxifraga</i> spp., <i>Oxyria digyna, Festuca brachyphylla, Carex pyrenaica ssp. micropoda, Anthoxanthum monticola ssp. alpinum</i>, and <i>Luzula</i> spp. Dwarf-shrubs are uncommon. Floodplains may have seedlings of <i>Salix</i> spp., <i>Populus</i> spp., <i>Equisetum</i> spp., and <i>Carex</i> spp., but these sites are rapidly drained and not truly mesic environments, thus mesic vegetation does not persist. 
Accession Code: urn:lsid:vegbank.org:commConcept:40536-{98597C1C-79CC-46BE-BDCB-F39621ED18C9}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 29-Mar-2017 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.860574 NatureServe ExplorerNatureServe Explorer logo
  Code: M175
  Scientific: Arctic Scree, Rock & Cliff Barrens Macrogroup