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A4222 Trapa natans - Hydrocharis morsus-ranae Ruderal Aquatic Vegetation Alliance
Type Concept Sentence: This ruderal floating aquatic vegetation occurs in cool temperate freshwater wetlands of lakes, rivers, and ponds commonly dominated by the exotics Hydrocharis morsus-ranae, and Trapa natans, which can spread vigorously and form extensive surface or subsurface mats.
Common (Translated Scientific) Name: Water Chestnut - Common Frogbit Ruderal Aquatic Vegetation Alliance
Colloquial Name: Ruderal Water Chestnut - Common Frogbit Aquatic Vegetation
Hierarchy Level: Alliance
Type Concept: This ruderal aquatic vegetation occurs in cool temperate freshwater wetlands of lakes, rivers, and ponds, in areas which are permanently or semipermanently flooded. The dominant growth form is floating aquatic vegetation. The most common species include the exotics Hydrocharis morsus-ranae, and Trapa natans. These exotic species can spread vigorously and form extensive mats that cover the surface or submersed areas of the water.
Diagnostic Characteristics: Floating aquatic vegetation dominated by ruderal species such as Hydrocharis morsus-ranae and Trapa natans (in cool-temperate areas). Native rooted floating-leaved and submergent species have little cover, generally less than 10-20%.
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: Floating-leaved herbaceous aquatic plants dominate. They can have sparse to dense cover.
Floristics: In the cool-temperate region, Hydrocharis morsus-ranae, Trapa natans, Nymphoides peltata, and Nymphoides cristata are typical aquatic exotic species.
Dynamics: After flooding events, these plants can establish in new areas where the floodwater has carried them. Many of these plants can also be spread to new areas on the props of boats. Various control methods have been used to reduce nuisance infestations (Gettys et al. 2009).
Environmental Description: Climate: This aquatic vegetation occurs in cool-temperate regions. Soil/substrate/hydrology: This aquatic vegetation occurs in freshwater wetlands that are permanently or semipermanently flooded. Areas may be impounded, natural lakes, or low-gradient flowing streams and rivers. Often patches of this vegetation will occur in the more slowly flowing sections of rivers and streams.
Geographic Range: This alliance is found in eastern Canada, northeastern, and midwestern United States.
Nations: CA,US
States/Provinces: CT, DE, IA, IL, IN, MA, ME, MI, MN, MO, ND, NE, NH, NJ, NY, OH, ON, PA, QC, VA, VT, WI, WV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.959597
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNA
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 5 Aquatic Vegetation Class | C05 | 5 |
| Subclass | 5.B Freshwater Aquatic Vegetation Subclass | S13 | 5.B |
| Formation | 5.B.2 Temperate to Polar Freshwater Aquatic Vegetation Formation | F057 | 5.B.2 |
| Division | 5.B.2.Na North American Freshwater Aquatic Vegetation Division | D049 | 5.B.2.Na |
| Macrogroup | 5.B.2.Na.90 Common Water-hyacinth - Brazilian Waterweed - Alligator-weed Ruderal Aquatic Vegetation Macrogroup | M401 | 5.B.2.Na.90 |
| Group | 5.B.2.Na.90.a Common Water-hyacinth - Alligator-weed - Water Chestnut Ruderal Freshwater Aquatic Vegetation Group | G595 | 5.B.2.Na.90.a |
| Alliance | A4222 Water Chestnut - Common Frogbit Ruderal Aquatic Vegetation Alliance | A4222 | 5.B.2.Na.90.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- ANS Task Force. 2010. The Lake Champlain Basin aquatic invasive species guide. Lake Champlain Basin Program. [http://adkinvasives.com/wp-content/uploads/2014/01/Lake-Champlain-Basin-Aquatic-Invasive-Species-Guide.pdf]
- Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. FWS/OBS-79/31. USDI Fish & Wildlife Service, Office of Biological Services, Washington, DC. 103 pp.
- 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.
- Lui, K., M. Butler, M. Allen, J. da Silva, and B. Brownson. 2008. Field guide to aquatic invasive species: Identification, collection and reporting of aquatic invasive species in Ontario waters. Queen''s Printer for Ontario. MNR # 52089. [http://www.ontariostewardship.org/councils/duff-simcoe/files/invading_species_field_guide.pdf]