Print Report

CEGL006533 Vaccinium uliginosum / Sibbaldiopsis tridentata Sparse Vegetation

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Bog Blueberry / Shrubby Fivefingers Sparse Vegetation

Colloquial Name: Subalpine Rock Bald

Hierarchy Level:  Association

Type Concept: These sparsely vegetated rocky balds are found on subalpine and alpine summits of the northern Appalachian Mountains. They are on dry acidic rocky summits, ridges and outcrops composed of resistant granitic bedrock, mostly at elevations between 915 and 1525 m (3000-5000 feet), sometimes as low as 550 m (1800 feet). Soil development is minimal, with vascular vegetation confined to crevices. Expanses of bare rock with crustose lichens predominate. Vascular vegetation is usually less than 25% cover overall, although in patches coverage may approach 70%. The dominant plants are Vaccinium uliginosum, Vaccinium vitis-idaea, Empetrum nigrum, Empetrum eamesii ssp. atropurpureum, and Sibbaldiopsis tridentata. Juncus trifidus and, at higher elevations, Carex bigelowii may be present, but in far lower abundance than they are seen in alpine habitats. This association is related to the alpine ~Vaccinium uliginosum - Rhododendron lapponicum / Juncus trifidus Dwarf-shrubland (CEGL006298)$$, but occurs at lower elevations and lacks characteristic alpine plants such as Diapensia lapponica, Agrostis mertensii, Rhododendron lapponicum, etc. It differs from lower elevation open summits in the presence of subalpine Vaccinium uliginosum (and sometimes Juncus trifidus or Carex bigelowii).

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

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

Physiognomy and Structure: No Data Available

Floristics: Expanses of bare rock with crustose lichens predominate. Vascular vegetation is usually less than 25% cover overall, although in patches coverage may approach 70%. The dominant plants are Vaccinium uliginosum, Vaccinium vitis-idaea, Empetrum nigrum, Empetrum eamesii ssp. atropurpureum, and Sibbaldiopsis tridentata. Juncus trifidus and, at higher elevations, Carex bigelowii may be present, but in far lower abundance than they are seen in alpine habitats.

Dynamics:  No Data Available

Environmental Description:  These sparsely vegetated rocky balds are found on subalpine and alpine summits of the northern Appalachian Mountains. They are on dry acidic rocky summits, ridges and outcrops composed of resistant granitic bedrock, mostly at elevations between 915 and 1525 m (3000-5000 feet), sometimes as low as 550 m (1800 feet). Soil development is minimal, with vascular vegetation confined to crevices.

Geographic Range: This association is found on subalpine and alpine summits of the northern Appalachian Mountains from Maine to New York.

Nations: CA?,US

States/Provinces:  ME, NH, NY, VT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Crowberry - Bilberry Summit Bald (Gawler 2002)

Concept Author(s): S.C. Gawler (2002)

Author of Description: S.C. Gawler

Acknowledgements: No Data Available

Version Date: 01-28-03

  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero, editors. 2014a. Ecological communities of New York state. Second edition. A revised and expanded edition of Carol Reschke''s ecological communities of New York state. New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY.
  • Gawler, S. C. 2002. Natural landscapes of Maine: A guide to vegetated natural communities and ecosystems. Maine Natural Areas Program, Department of Conservation, Augusta, ME.
  • Gawler, S. C., and A. Cutko. 2010. Natural landscapes of Maine: A classification of vegetated natural communities and ecosystems. Maine Natural Areas Program, Department of Conservation, Augusta.
  • Sperduto, D. D., and C. V. Cogbill. 1999. Alpine and subalpine vegetation of the White Mountains, New Hampshire. New Hampshire Natural Heritage Inventory, Concord, NH. 25 pp. plus figures.
  • Sperduto, D. D., and W. F. Nichols. 2004. Natural communities of New Hampshire: A guide and classification. New Hampshire Natural Heritage Bureau, DRED Division of Forests and Lands, Concord. 242 pp.
  • Thompson, E. H., and E. R. Sorenson. 2005. Wetland, woodland, wildland: A guide to the natural communities of Vermont. The Nature Conservancy and the Vermont Department of Fish and Wildlife. University Press of New England, Hanover, NH. 456 pp.