Print Report
A3653 Schoenoplectus pungens - Spartina patens Interdunal Marsh Alliance
Type Concept Sentence: This alliance contains interdunal swale vegetation characterized by Spartina patens and Schoenoplectus pungens. It ranges from freshwater to slightly brackish, the latter resulting from occasional overwash or brackish groundwater influence, and occurs from southern New England along the coast to Virginia.
Common (Translated Scientific) Name: Common Threesquare - Saltmeadow Cordgrass Interdunal Marsh Alliance
Colloquial Name: Common Threesquare Interdunal Swale
Hierarchy Level: Alliance
Type Concept: This alliance contains interdunal swale vegetation characterized by Spartina patens and Schoenoplectus pungens. Associates include a mixture of freshwater and brackish species such as Cyperus polystachyos, Distichlis spicata, Eleocharis parvula, Hibiscus moscheutos, Juncus canadensis, Pluchea odorata, Sabatia stellaris, Schoenoplectus americanus, Solidago sempervirens, and Thelypteris palustris. It ranges from freshwater to slightly brackish, resulting from occasional overwash or brackish groundwater influence, and occurs from southern New England along the coast to Virginia. The substrate is sand with an organic layer of variable depth.
Diagnostic Characteristics: Graminoid interdunal swale characterized by Schoenoplectus pungens, Spartina patens, Eleocharis parvula, and Hibiscus moscheutos.
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: This alliance is dominated by graminoids and forbs, sometimes with an open canopy of low shrubs.
Floristics: This alliance contains interdunal swale vegetation characterized by Spartina patens and Schoenoplectus pungens, along with a variable mixture of freshwater and brackish species, including Cyperus polystachyos, Distichlis spicata, Eleocharis parvula, Hibiscus moscheutos, Juncus canadensis, Pluchea odorata, Sabatia stellaris, Schoenoplectus americanus, Schoenoplectus pungens, Solidago sempervirens, Spartina patens, and Thelypteris palustris.
Dynamics: This wetland vegetation is seasonally flooded by groundwater, rainwater, and occasional overwash. The depression may hold standing water early in the growing season or following lunar tidal flooding, but generally dries as the water table drops through the growing season.
Environmental Description: This alliance occurs in interdunal swales with fresh to slightly brackish conditions. The substrate is sand with an organic layer of variable depth.
Geographic Range: This alliance ranges from southern New England along the coast to Virginia.
Nations: CA,US
States/Provinces: DE, MA, MD, NJ, NY, QC, VA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.899711
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation | F013 | 2.C.4 |
| Division | 2.C.4.Ne Atlantic & Gulf Coastal Marsh, Wet Meadow & Shrubland Division | D322 | 2.C.4.Ne |
| Macrogroup | 2.C.4.Ne.2 Beaksedge species - Spikerush species - Panicgrass species Atlantic & Gulf Coastal Plain Wet Prairie & Marsh Macrogroup | M067 | 2.C.4.Ne.2 |
| Group | 2.C.4.Ne.2.f Northern & Mid-Atlantic Coastal Wetland Group | G752 | 2.C.4.Ne.2.f |
| Alliance | A3653 Common Threesquare - Saltmeadow Cordgrass Interdunal Marsh Alliance | A3653 | 2.C.4.Ne.2.f |
| Association | CEGL006342 Saltmeadow Cordgrass - Dwarf Spikerush Marsh | CEGL006342 | 2.C.4.Ne.2.f |
| Association | CEGL006350 Herb-of-Grace - White Spikerush Marsh | CEGL006350 | 2.C.4.Ne.2.f |
| Association | CEGL006935 Common Threesquare - Canadian Rush Marsh | CEGL006935 | 2.C.4.Ne.2.f |
Concept Lineage: A.1390 and A.1436
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: < Brackish Interdunal Swales (NYNHP 2013s)
- Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
- NYNHP [New York Natural Heritage Program]. 2013s. Online conservation guide for Brackish Interdunal Swales. New York Natural Heritage Program, Albany, NY. [http://www.acris.nynhp.org/guide.php?id=9864]