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Pseudotsuga menziesii / Heracleum maximum Forest | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii / Heracleum maximum Forest
Reference: NatureServe Biotics 2019
Description: This seral association has been identified only from Glacier-Waterton International Peace Park of the northern Rocky Mountains but has a high probability of occurring throughout this region. It has been described from montane to lower subalpine and even extending to mid subalpine habitats, from 1070 to 1585 m (3500-5200 feet). It encompasses relatively mesic to subhygric sites occurring on moderate to steep slopes with north- to east-facing aspects, as well as on toeslopes and footslopes where subsurface input may be a mitigating factor. Soils are mostly well-drained, fine-textured and derived from glacial drift or alluvium; because the type has been described from such a small geographic area, the only substrates sampled have been sedimentary siltstone and metamorphic (argillite). The canopy and subcanopy are <i>Pseudotsuga menziesii</i>-dominated with a combined cover in excess of 60%. <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> are represented in the seedling/sapling component, and <i>Pinus contorta</i> may have relatively high cover as a seral component. The shrub component is various but mostly dominated by a short-shrub layer in which <i>Rubus parviflorus, Spiraea betulifolia</i>, and <i>Symphoricarpos albus</i> have high constancy and share dominance. Any of the following forbs having &gt;3% canopy cover, singly or in any combination, is diagnostic for the type: <i>Streptopus amplexifolius, Galium triflorum, Actaea rubra, Senecio triangularis, Angelica arguta, Angelica dawsonii</i>, and/or <i>Heracleum maximum</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:34507-{015AFF14-C720-40CA-AA6F-869E5856A3D1}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 08-Jan-2007 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.730900 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL005853
  Translated: Douglas-fir / Common Cow-parsnip Forest
  Scientific: Pseudotsuga menziesii / Heracleum maximum Forest
(convergence) and Synonyms:
(similar) Pseudotsuga menziesii / Heracleum maximum Forest
(similar) Pseudotsuga menziesii / Angelica spp. Forest