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Juniperus virginiana / Ranunculus fascicularis Woodland
Translated Name: Eastern Red-cedar / Early Buttercup Woodland
Common Name: Red-cedar / Buttercup Alvar Woodland
Unique Identifier: CEGL005122
Classification Approach: International Vegetation Classification (IVC)
Summary: The red-cedar / early buttercup alvar woodland type occurs in Ontario, Canada, and possibly in northern New York on shallow soils over flat limestone outcrops (pavements). This is a woodland community; the trees form a partial canopy with 25-60% cover. Juniperus virginiana is usually the most abundant tree, but Thuja occidentalis may also be present. There are very few shrubs. The ground layer is a mosaic of grassy patches and exposed limestone pavement. Characteristic herbs in the grassy patches include Poa compressa, Ranunculus fascicularis, Sporobolus vaginiflorus, Panicum philadelphicum, Panicum flexile, and Oligoneuron album. Patches of exposed pavement typically are covered with tufts of mosses, such as Tortella spp., and lichens.



Classification

Classification Confidence: Moderate

Vegetation Hierarchy
Class 1 - Forest & Woodland
Subclass 1.B - Temperate & Boreal Forest & Woodland
Formation 1.B.2 - Cool Temperate Forest & Woodland
Division 1.B.2.Na - Eastern North American Forest & Woodland
Macrogroup Laurentian-Acadian Pine - Hardwood Forest & Woodland
Group Laurentian-Acadian Limestone Woodland
Alliance Chinquapin Oak - Red-cedar Alvar Woodland

This is the revised vegetation hierarchy. For more information see Classification Sources and usnvc.org.



Related Concepts from Other Classifications

Other Related Concepts
Related Concept Name: Juniperus virginiana / Ranunculus fascicularis Woodland
Relationship: = - Equivalent
Reference: Reschke, C., R. Reid, J. Jones, T. Feeney, and H. Potter, on behalf of the Alvar Working Group. 1998. Conserving Great Lakes Alvars. Final Technical Report of the International Alvar Conservation Initiative. The Nature Conservancy, Great Lakes Program, Chicago, IL. 119 pp. plus 4 appendices.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES201.721 Great Lakes Alvar


NatureServe Conservation Status
Global Status: G3? (31Dec1998)
Rounded Global Status: G3 - Vulnerable
Reasons: This community occurs in Ontario, Canada, and possibly in northern New York, with three documented occurrences and a total area of over 110 acres (45 ha) currently mapped. This community is not well documented; surveys are needed to search for additional examples, and map the extent of these communities. The global rank reflects the impression that there are many more occurrences to document.

Distribution
Color legend for Distribution Map
United States Distribution: NYpotentially occurs
Canadian Province Distribution: ON
Global Distribution: Canada, United Statespotentially occurs
Global Range: The red-cedar / early buttercup alvar woodland type occurs in Ontario, Canada, and possibly in northern New York.

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Warm Continental Division
Province Name: Laurentian Mixed Forest Province
Province Code: 212 Occurrence Status: Confident or certain
Section Name: St. Lawrence and Champlain Valley Section
Section Code: 212E Occurrence Status: Possible


Vegetation

Vegetation Summary: This is a woodland community; the trees form a partial canopy with 25-60% cover. Juniperus virginiana is usually the most abundant tree, but Thuja occidentalis may also be present. There are very few shrubs. The ground layer is a mosaic of grassy patches and exposed limestone pavement. Characteristic herbs in the grassy patches include Poa compressa, Ranunculus fascicularis, Sporobolus vaginiflorus, Panicum philadelphicum, Panicum flexile, and Oligoneuron album (= Solidago ptarmicoides). Patches of exposed pavement typically are covered with tufts of mosses, such as Tortella spp., and lichens (Reschke et al. 1998).

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Juniperus virginiana G3 Needle-leaved tree Tree canopy  
 
 
Oligoneuron album G3 Flowering forb Herb (field)      
 
 
Ranunculus fascicularis G3 Flowering forb Herb (field)    
 
 
Panicum flexile G3 Graminoid Herb (field)      
 
 
Panicum philadelphicum G3 Graminoid Herb (field)      
 
 
Poa compressa G3 Graminoid Herb (field)      
 
 


Environmental Setting

Wetland Indicator: N
Environmental Summary: Stands occur on shallow loam soils, usually less than 20 cm deep, over flat limestone outcrops (pavements) (Reschke et al. 1998).


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): C. Reschke et al. (1998)
Element Description Edition Date: 22Apr1999
Element Description Author(s): C. Reschke
NatureServe Conservation Status Factors Edition Date: 31Dec1998
NatureServe Conservation Status Factors Author(s): C. Reschke

Ecological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).


References
  • Lee, H., W. Bakowsky, J. Riley, J. Bowles, M. Puddister, P. Uhlig, and S. McMurray. 1998. Ecological land classification for southern Ontario: First approximation and its application. Ontario Ministry of Natural Resources, Southcentral Science Section, Science Development and Transfer Branch. SCSS Field Guide FG-02.

  • Midwestern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Minneapolis, MN.

  • ONHIC [Ontario Natural Heritage Information Centre]. 2018. Unpublished data. Ontario Natural Heritage Information Centre, Ministry of Natural Resources, Ontario, Canada.

  • Reschke, C., R. Reid, J. Jones, T. Feeney, and H. Potter, on behalf of the Alvar Working Group. 1998. Conserving Great Lakes Alvars. Final Technical Report of the International Alvar Conservation Initiative. The Nature Conservancy, Great Lakes Program, Chicago, IL. 119 pp. plus 4 appendices.


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