Print Report
A1381 Phalaris arundinacea Eastern Ruderal Marsh Alliance
Type Concept Sentence: This alliance is found throughout the northeastern and midwestern United States in wetlands that are dominated by Phalaris arundinacea, which tends to occur in monocultures or associated with Calamagrostis canadensis.
Common (Translated Scientific) Name: Reed Canarygrass Ruderal Marsh Alliance
Colloquial Name: Eastern Ruderal Reed Canarygrass Marsh
Hierarchy Level: Alliance
Type Concept: This alliance is found throughout the northeastern and midwestern United States, but its distribution as a natural type is complicated elsewhere. Stands are typically minerotrophic wetlands rather than river shores. Stands are dominated by Phalaris arundinacea, which tends to occur in monocultures or associated with Calamagrostis canadensis. Other associates in the Northeast include Agrostis gigantea, Alnus incana or Alnus serrulata, Viburnum dentatum, and Viburnum nudum. Western stands tend to be monotypic. Further work is required to resolve the natural versus introduced nature of this type in North America before a thorough alliance description can be completed.
Diagnostic Characteristics: Sites in this alliance have a strong dominance by Phalaris arundinacea, typically 70% or greater.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Phalaris arundinacea can invade a variety of habitats, suggesting that little unites these stands apart from the dominance of Phalaris arundinacea. However, that may be the only reasonable way to describe this type.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: This alliance is dominated by herbaceous species approximately 1 m tall. Shrubs can be present but have <25% cover. Total vegetation cover is usually moderately dense to dense, unless recent disturbance has significantly impacted the cover.
Floristics: This alliance is found throughout the northeastern United States, but its distribution as a natural type is complicated elsewhere. Stands are dominated by Phalaris arundinacea, which tends to occur in monocultures or associated with Calamagrostis canadensis. Other associates in the Northeast include Agrostis gigantea, Alnus incana or Alnus serrulata, Viburnum dentatum, and Viburnum nudum. Further work is required to resolve the natural versus introduced nature of this type in North America before a complete alliance description can be completed.
Dynamics: This alliance can be significantly impacted by severe flooding, which can reduce cover of the dominant species significantly.
Environmental Description: Stands are typically minerotrophic wetlands in basins or floodplains away from the main channel where water is still or slow-moving.
Geographic Range: This alliance is found widely across the northeastern and midwestern United States and southern Canada.
Nations: CA,US
States/Provinces: CT, DE, IA, IN, MA, MD, ME, MN, NH, NJ, NY, OH, ON, PA, QC, RI, TN, VA, VT, WI, WV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.899123
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNA
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.Nd Eastern North American Temperate Freshwater Marsh, Wet Meadow & Shrubland Division | D323 | 2.C.4.Nd |
| Macrogroup | 2.C.4.Nd.90 Common Rush - Purple Loosestrife - Reed Canarygrass Eastern North American Ruderal Marsh, Wet Meadow & Shrubland Macrogroup | M303 | 2.C.4.Nd.90 |
| Group | 2.C.4.Nd.90.b Reed Canarygrass - Common Reed - Narrowleaf Cattail Ruderal Wet Meadow & Marsh Group | G556 | 2.C.4.Nd.90.b |
| Alliance | A1381 Reed Canarygrass Ruderal Marsh Alliance | A1381 | 2.C.4.Nd.90.b |
| Association | CEGL006044 Reed Canarygrass Eastern Ruderal Marsh | CEGL006044 | 2.C.4.Nd.90.b |
Concept Lineage: The new alliance equals old alliance A.1381 in the eastern United States and Canada.
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- 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.
- Faber-Langendoen, D., and Midwest State Natural Heritage Program Ecologists. 1996. Terrestrial vegetation of the midwest United States. International classification of ecological communities: Terrestrial vegetation of the United States. The Nature Conservancy, Arlington, VA.