Print Report

CEGL006935 Schoenoplectus pungens var. pungens - Juncus canadensis Marsh

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Common Threesquare - Canadian Rush Marsh

Colloquial Name: Coastal Freshwater Marsh

Hierarchy Level:  Association

Type Concept: This non-tidal freshwater marsh of the coastal Northeast occupies flooded depressions and swales in coastal dunes. The substrate varies from sand to peat or muck, depending on hydrological regime. Water is present most of the year and does not typically exhibit a seasonal drawdown. The vegetation is dominated by Schoenoplectus pungens var. pungens, in association with Hibiscus moscheutos, Juncus canadensis, Juncus effusus, Eleocharis erythropoda, Osmunda regalis, Osmunda cinnamomea, Thelypteris palustris, and Triadenum virginicum. Typha latifolia may be present, but generally only occurs at low cover. A diverse range of other forbs may also be associated with this community.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: New community described based on Gap Project sample sites ("FM1", "FM2", "FM4") at Island Beach State Park.

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

Physiognomy and Structure: No Data Available

Floristics: The vegetation is dominated by Schoenoplectus pungens var. pungens, in association with Hibiscus moscheutos (= ssp. moscheutos), Juncus canadensis, Juncus effusus, Eleocharis erythropoda, Osmunda regalis, Osmunda cinnamomea, Thelypteris palustris, and Triadenum virginicum. Typha latifolia may be present, but generally only occurs at low cover. A diverse range of other forbs may also be associated with this community. Shrubs may be present as sparsely distributed individuals, or more densely from the wetland edge. Typical shrubs include Rosa rugosa, Vaccinium corymbosum, and Morella pensylvanica.

Dynamics:  No Data Available

Environmental Description:  This non-tidal freshwater marsh of the coastal Northeast occupies flooded depressions and swales in coastal dunes. The substrate varies from sand to peat or muck, depending on hydrological regime. Water is present most of the year and does not typically exhibit a seasonal drawdown.

Geographic Range: This association is known from Massachusetts and New Jersey but is likely to occur in other coastal states of the Northeast.

Nations: CA,US

States/Provinces:  MA, NJ, NY, QC?




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: < Fresh marsh (Martin 1959b)

Concept Author(s): Y. Alger and L. Sneddon

Author of Description: L.A. Sneddon

Acknowledgements: No Data Available

Version Date: 05-09-07

  • CDPNQ [Centre de données sur le patrimoine naturel du Québec]. No date. Unpublished data. Centre de données sur le patrimoine naturel du Québec, Québec.
  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Martin, W. E. 1959b. The vegetation of Island Beach State Park, New Jersey. Ecological Monographs 29:1-46.
  • Sneddon, L. A. 1994. Descriptions of coastal plain pondshore proposed community elements. Unpublished. The Nature Conservancy, Boston, MA.
  • Sneddon, L. A., Zaremba, R. E., and M. Adams. 2010. Vegetation classification and mapping at Cape Cod National Seashore, Massachusetts. Natural Resources Technical Report NPS/NER/NRTR--2010/147. National Park Service, Philadelphia, PA. 481 pp. [http://biology.usgs.gov/npsveg/caco/cacorpt.pdf]