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Cornus racemosa / Carex (sterilis, aquatilis, lacustris) Fen
Translated Name: Gray Dogwood / (Dioecious Sedge, Water Sedge, Lake Sedge) Fen
Common Name: Calcareous Basin Fen
Unique Identifier: CEGL006123
Classification Approach: International Vegetation Classification (IVC)
Summary: This calcareous fen community occurs in Lower New England/Northern Piedmont and adjacent ecoregions. It is characterized by short cespitose sedges mixed with more robust species as well as moderately deep peat (generally 50-200 cm) accumulation. These fens are generally flat but may have a gentle slope. Characteristic herbs include Carex aquatilis, Carex flava, Carex hystericina, Carex interior, Carex leptalea, Carex lacustris, Carex sterilis, Eriophorum viridicarinatum, and Muhlenbergia glomerata. Shrubs are not abundant (typically less than 50% cover) but include Cornus amomum, Cornus racemosa, Cornus sericea, Salix spp., Amelanchier arborea, Aronia melanocarpa, Rhamnus alnifolia, Ribes hirtellum, and Dasiphora fruticosa ssp. floribunda.



Classification

Classification Confidence: Low

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.2 - Temperate to Polar Bog & Fen
Division 2.C.2.Na - North American Bog & Fen
Macrogroup North American Boreal & Subboreal Alkaline Fen
Group North-Central Interior & Appalachian Alkaline Fen
Alliance Lower New England Calcareous Sedge Shrub Fen

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

Similar Associations
Unique Identifier Name
CEGL005140 Dasiphora fruticosa / Carex interior - Carex flava - Sarracenia purpurea Fen
CEGL006068 Myrica gale - Dasiphora fruticosa / Carex lasiocarpa - Cladium mariscoides Fen
CEGL006326 Dasiphora fruticosa / Carex (sterilis, hystericina, flava) Fen
CEGL006331 Carex (interior, hystericina, flava) - Trichophorum alpinum / Campylium stellatum Fen



Related Concepts from Other Classifications

Related Subnational Community Units
These data are subject to substantial ongoing revision and may be out of date for some states.
In the U.S., contact the state Heritage Program for the most complete and up-to-date information at: http://www.natureserve.org/natureserve-network.
Information from programs in other jurisdictions will be posted when they are made available.
Subnation Concept Name Relationship to Standard Confidence Reference
Massachusetts Calcareous Basin Fen Broader   Swain and Kearsley 2001
New York Rich sloping fen Broader   Edinger et al. 2002
Vermont Rich Fen Broader   Thompson and Sorenson 2000


Other Related Concepts
Related Concept Name: Carex sterilis / Cornus racemosa community
Relationship: = - Equivalent
Reference: Metzler, K., and J. Barrett. 2006. The vegetation of Connecticut: A preliminary classification. State Geological and Natural History Survey, Report of Investigations No. 12. Connecticut Natural Diversity Database, Hartford, CT.
Related Concept Name: II.B.1.
Relationship: = - Equivalent
Reference: Motzkin, G. 1994. Calcareous fens of western New England and adjacent New York State. Rhodora 96(885):44-68.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES202.607 North-Central Appalachian Seepage Fen
CES202.702 North-Central Interior Shrub-Graminoid Alkaline Fen


NatureServe Conservation Status
Global Status: G2G3 (31Dec1997)
Rounded Global Status: G2 - Imperiled

Distribution
Color legend for Distribution Map
United States Distribution: CT, MA, NY, VT
Global Distribution: United States

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: Northern Glaciated Allegheny Plateau Section
Section Code: 212F Occurrence Status: Confident or certain
Division Name: Hot Continental Division
Province Name: Eastern Broadleaf Forest (Oceanic) Province
Province Code: 221 Occurrence Status: Confident or certain
Section Name: Lower New England Section
Section Code: 221A Occurrence Status: Confident or certain
Section Name: Hudson Valley Section
Section Code: 221B Occurrence Status: Confident or certain
Province Name: Eastern Broadleaf Forest (Continental) Province
Province Code: 222 Occurrence Status: Confident or certain
Section Name: Erie and Ontario Lake Plain Section
Section Code: 222I Occurrence Status: Confident or certain
Division Name: Warm Continental Regime Mountains
Province Name: Adirondack-New England Mixed Forest - Coniferous Forest - Alpine Meadow Province
Province Code: M212 Occurrence Status: Confident or certain
Section Name: Green, Taconic, Berkshire Mountain Section
Section Code: M212C Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: Characteristic herbs include Carex aquatilis, Carex flava, Carex hystericina, Carex interior, Carex leptalea, Carex lacustris, Carex sterilis, Eriophorum viridicarinatum, and Muhlenbergia glomerata. Shrubs are not abundant (typically less than 50% cover) but include Cornus amomum, Cornus racemosa, Cornus sericea, Salix spp., Amelanchier arborea, Aronia melanocarpa, Rhamnus alnifolia, Ribes hirtellum, and Dasiphora fruticosa ssp. floribunda.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Cornus amomum G2 Broad-leaved deciduous shrub Tall shrub/sapling      
 
 
Cornus racemosa G2 Broad-leaved deciduous shrub Tall shrub/sapling    
 
 
Cornus sericea G2 Broad-leaved deciduous shrub Tall shrub/sapling      
 
 
Carex aquatilis G2 Graminoid Herb (field)    
 
 
Carex flava G2 Graminoid Herb (field)      
 
 
Carex hystericina G2 Graminoid Herb (field)      
 
 
Carex interior G2 Graminoid Herb (field)      
 
 
Carex lacustris G2 Graminoid Herb (field)    
 
 
Carex sterilis G2 Graminoid Herb (field)    
 
 


Environmental Setting

Wetland Indicator: Y
Environmental Summary: Flat to very gently sloping fens fed by minerotrophic groundwater that have moderately deep peat (50-200 cm).


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): M. Anderson
Element Description Edition Date: 01Mar2004
Element Description Author(s): S.L. Neid
NatureServe Conservation Status Factors Edition Date: 31Dec1997

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


References
  • 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.

  • Metzler, K., and J. Barrett. 2006. The vegetation of Connecticut: A preliminary classification. State Geological and Natural History Survey, Report of Investigations No. 12. Connecticut Natural Diversity Database, Hartford, CT.

  • Motzkin, G. 1994. Calcareous fens of western New England and adjacent New York State. Rhodora 96(885):44-68.

  • Swain, P. C., and J. B. Kearsley. 2014. Classification of the natural communities of Massachusetts. Version 2.0. Natural Heritage & Endangered Species Program, Massachusetts Division of Fisheries and Wildlife. Westborough, MA. [http://www.mass.gov/nhesp/http://www.mass.gov/eea/agencies/dfg/dfw/natural-heritage/natural-communities/classification-of-natural-communities.html]

  • 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.


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Data last updated: March 2019