Print Report

CEGL005101 (Pinus strobus, Quercus rubra) / Danthonia spicata Acidic Bedrock Scrub Grassland

Type Concept Sentence: This acidic bedrock glade and woodland occurs in the Upper Great Lakes region of the United States and Canada, above the granitic bedrock shorelines or on rocky openings.


Common (Translated Scientific) Name: (Eastern White Pine, Northern Red Oak) / Poverty Oatgrass Acidic Bedrock Scrub Grassland

Colloquial Name: White Pine - Red Oak Acidic Bedrock Glade

Hierarchy Level:  Association

Type Concept: This acidic bedrock glade and woodland occurs in the Upper Great Lakes region of the United States and Canada. These glades occupy upper portions above the granitic bedrock shorelines or on rocky openings. Shrubs and scattered trees dominate the woody canopy layers; the tree canopy may approach woodland physiognomy. Trees include Betula papyrifera, Pinus banksiana, Pinus resinosa, Pinus strobus, and Quercus rubra. The shrub layer contains Diervilla lonicera, Juniperus communis, and, less frequently, Physocarpus opulifolius. The dwarf-shrub Arctostaphylos uva-ursi may also be present. The herbaceous layer contains Agrostis hyemalis, Campanula rotundifolia, Danthonia spicata, Deschampsia cespitosa, Chamerion angustifolium, Poa compressa, Sibbaldiopsis tridentata, and Vaccinium angustifolium. Other common herbaceous species include Maianthemum canadense, Melampyrum lineare, Oryzopsis asperifolia, Pteridium aquilinum, and Trientalis borealis. Moss and lichen cover may be substantial.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type bears a resemblance to the ~Quercus ellipsoidalis - Quercus macrocarpa - (Pinus banksiana) Rocky Woodland (CEGL005246)$$, that also occurs on granitic shoreline outcrops in Minnesota, particularly at Voyageurs National Park. It is distinct from the basaltic/metamorphic glades, ~Picea glauca - Abies balsamea Basalt - Conglomerate Woodland (CEGL005214)$$, which is more spruce-fir-dominated. Stands have also been observed on Isle Royale National Park. This type is probably found in the basalt outcrops along the St. Croix River in Wisconsin (and perhaps Minnesota), and possibly elsewhere in the Penokee Range of Wisconsin.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: Shrubs and scattered trees dominate the woody canopy layers.

Floristics: Trees include Betula papyrifera, Pinus resinosa, Pinus strobus, and Quercus rubra; Pinus banksiana is also common. The shrub layer contains Diervilla lonicera, Juniperus communis, and, less frequently, Physocarpus opulifolius. The dwarf-shrub Arctostaphylos uva-ursi may also be present. The herbaceous layer contains Agrostis hyemalis, Campanula rotundifolia, Danthonia spicata, Deschampsia cespitosa, Chamerion angustifolium (= Epilobium angustifolium), Poa compressa, Sibbaldiopsis tridentata (= Potentilla tridentata), and Vaccinium angustifolium. Moss and lichen cover may be substantial. A plant of special interest in Michigan is Trisetum spicatum (Albert et al. 1995). Common herbaceous species include Maianthemum canadense, Melampyrum lineare, Oryzopsis asperifolia, Pteridium aquilinum, and Trientalis borealis.

Dynamics:  No Data Available

Environmental Description:  In the Great Lakes, these glades occur on rocky outcrops and along upper areas above the granitic bedrock shorelines (Albert et al. 1995).

Geographic Range: This acidic bedrock glade type occurs in the Upper Great Lakes region of the United States and Canada. The type ranges from northwestern Wisconsin and northern Ontario east through several Great Lakes states.

Nations: CA,US

States/Provinces:  MI, ON?, QC?, WI




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G3G4

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = (Pinus strobus, Quercus rubra) / Danthonia spicata Acid Bedrock Wooded Herbaceous Vegetation (Faber-Langendoen 2001) [Bedrock Glade White Pine-Oak Subtype]

Concept Author(s): D. Faber-Langendoen (2001)

Author of Description: D. Faber-Langendoen and S.C. Gawler

Acknowledgements: No Data Available

Version Date: 07-26-11

  • Albert, D. A., P. J. Comer, R. A. Corner, D. Cuthrell, M. Penskar, and M. Rabe. 1995. Bedrock shoreline survey of the Niagaran Escarpment in Michigan''s Upper Peninsula: Mackinac County to Delta County. Michigan Natural Features Inventory for Land and Water Management Division (grant # CD-0.02).
  • CDPNQ [Centre de données sur le patrimoine naturel du Québec]. No date. Unpublished data. Centre de données sur le patrimoine naturel du Québec, Québec.
  • Faber-Langendoen, D., editor. 2001. Plant communities of the Midwest: Classification in an ecological context. Association for Biodiversity Information, Arlington, VA. 61 pp. plus appendix (705 pp.).
  • Kost, M. A., D. A. Albert, J. G. Cohen, B. S. Slaughter, R. K. Schillo, C. R. Weber, and K. A. Chapman. 2007. Natural communities of Michigan: Classification and description. Report No. 2007-21, Michigan Natural Features Inventory, Lansing. 314 pp. [http://web4.msue.msu.edu/mnfi/reports/2007-21_Natural_Communites_of_Michigan_Classification_and_Description.pdf]
  • Midwestern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Minneapolis, MN.
  • TNC [The Nature Conservancy]. 1999b. USGS-NPS Vegetation Mapping Program: Classification of the vegetation of Isle Royale National Park. The Nature Conservancy, Midwest Regional Office, Minneapolis, MN, and International Headquarters, Arlington, VA. 143 pp.
  • WDNR [Wisconsin Department of Natural Resources]. 2015. The ecological landscapes of Wisconsin: An assessment of ecological resources and a guide to planning sustainable management. PUB-SS-1131 2015. Wisconsin Department of Natural Resources, Madison. [http://dnr.wi.gov/topic/landscapes/Book.html]