Name:
Pinus banksiana / Cladonia spp. Rock Outcrop Vegetation
Reference:
NatureServe Biotics 2019
Description:
This granite/metamorphic rock outcrop is found in rocky openings on and near the subboreal regions of the Canadian Shield in the northern Great Lakes region of the United States and Canada, and possibly in northern New England. Stands are typically composed of granite or metamorphic rock, and possibly basalt. They occur on relatively level or rounded areas of exposed bedrock, sometimes along lake shorelines, including the Great Lakes shorelines. Soil development is minimal, and pH is typically acidic. Occurrences are typically a mosaic of exposed bedrock with patches of low vegetation dominated by fruticose lichens and mosses (which cover about 40% of the area) and scattered trees and shrubs (which rarely exceed 20% cover). Bare rock (with crustose lichens) covers about 30% of the area. Lichen species include <i>Cladonia rangiferina</i> and <i> Cladonia arbuscula ssp. mitis</i>. Mosses include <i>Dicranum</i> spp., <i>Pleurozium schreberi</i>, and <i>Polytrichum</i> spp. The vascular vegetation is typically sparse. Scattered trees and shrubs include <i>Amelanchier</i> spp., <i>Diervilla lonicera, Juniperus communis, Pinus banksiana, Pinus resinosa, Pinus strobus, Prunus pensylvanica, Quercus rubra, Salix bebbiana</i>, and <i>Vaccinium angustifolium</i>. The sparse herbaceous layer includes <i>Agrostis hyemalis, Aralia hispida, Campanula rotundifolia, Corydalis sempervirens, Danthonia spicata, Deschampsia cespitosa, Chamerion angustifolium, Poa compressa</i>, and <i>Sibbaldiopsis tridentata</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:31399-{ABBCBFB6-F1AD-4442-9351-92B5C60E9878}
Plot-observations of this Community Concept:
3
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