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Pinus banksiana - Thuja occidentalis - Picea glauca / Juniperus communis Woodland | NatureServe Biotics 2019
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Name: Pinus banksiana - Thuja occidentalis - Picea glauca / Juniperus communis Woodland
Reference: NatureServe Biotics 2019
Description: The mixed conifer / common juniper alvar woodland type occurs scattered through the Great Lakes region in the United States and Canada, from southern Ontario and northern Michigan, to northern New York. Stands occur on shallow soils over flat limestone or dolostone outcrops (pavements). The trees form a partial canopy with 25-60% cover. The tree canopy consists of a variable mixture of <i>Picea glauca, Thuja occidentalis, Pinus banksiana, Abies balsamea</i>, and <i>Pinus strobus</i>. The understory of this woodland is a mosaic of shrubby patches, exposed pavement, and grassy patches. The most abundant shrub is <i>Juniperus communis</i>; other characteristic shrubs include <i>Juniperus horizontalis, Shepherdia canadensis</i>, and <i>Arctostaphylos uva-ursi</i>. Characteristic herbs include <i>Trichostema brachiatum, Carex crawei, Packera paupercula, Carex eburnea, Carex richardsonii</i>, and <i>Sporobolus vaginiflorus</i>. Areas of exposed limestone or dolostone pavement are common, usually with a cover of mosses such as <i>Tortella</i> spp. and <i>Schistidium</i> spp., lichens such as <i>Cladonia rangiferina</i> and <i>Peltigera canina</i>, and rock surface algae such as <i>Gloeocapsa alpina</i>. This community is closely related to juniper alvar shrubland, and may represent a later successional stage of that community. The main difference between mixed conifer / common juniper alvar woodland and juniper alvar grassland is the higher cover of trees (over 5 m tall) in the mixed conifer / common juniper alvar woodland. 
Accession Code: urn:lsid:vegbank.org:commConcept:33891-{5F8A1E33-EEEF-4BF5-A36F-3398D86DBAF0}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 22-Apr-1999 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.689376 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL005126
  Translated: Jack Pine - Northern White-cedar - White Spruce / Common Juniper Woodland
  Common: Mixed Conifer / Common Juniper Limestone Woodland
  Scientific: Pinus banksiana - Thuja occidentalis - Picea glauca / Juniperus communis Woodland
(convergence) and Synonyms:
(similar) CEGL005126
(similar) Pinus banksiana - Thuja occidentalis - Picea glauca / Juniperus communis Woodland
(similar) Pinus banksiana - Thuja occidentalis - Picea glauca / Juniperus communis Woodland