Print Report
A3542 Myriophyllum spp. Aquatic Vegetation Alliance
Type Concept Sentence: This alliance consists of submergent aquatic vegetation dominated by native Myriophyllum spp. in the eastern United States and southern Canada.
Common (Translated Scientific) Name: Water-milfoil species Aquatic Vegetation Alliance
Colloquial Name: Water-milfoil Aquatic Vegetation
Hierarchy Level: Alliance
Type Concept: This alliance is found in the eastern half of the United States and southern Canada. This is a submergent aquatic alliance; emergent species are not common. Total vegetation cover ranges from open to dense and is dominated by native Myriophyllum species, usually Myriophyllum heterophyllum, Myriophyllum spicatum, and Myriophyllum verticillatum. This alliance occurs in permanently flooded portions of ponds, lakes, and river backwaters where current and wave action is not great. Water depth is typically 1-3 m.
Diagnostic Characteristics: This alliance is dominated by native Myriophyllum species with little or no emergent or floating-leaved species above it. Mixed stands, where Myriophyllum spp. is not dominant, do not fit this alliance.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This alliance currently has one poorly defined association attributed only to Ontario and another attributed to Alabama, Georgia, and South Carolina. Myriophyllum-dominated vegetation occurs elsewhere in the eastern and central United States and should be compared to this alliance for possible inclusion as it is described.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: Stands of this alliance have low to dense cover (>25%) of submergent aquatic species with little or no emergent or floating-leaved species above.
Floristics: This alliance is dominated by native Myriophyllum species but is otherwise poorly described. Total vegetation cover ranges from open to dense and may include Myriophyllum heterophyllum, Myriophyllum spicatum, and Myriophyllum verticillatum. Emergent species are not common.
Dynamics: No Data Available
Environmental Description: This alliance occurs in permanently flooded portions of ponds, lakes, and river backwaters where current and wave action is not great. Water depth is typically 1-3 m.
Geographic Range: This alliance has been documented in southern Ontario, Alabama, Georgia, and South Carolina but is almost certainly widespread in the eastern and central United States.
Nations: CA,US
States/Provinces: AL, GA, ON, SC
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.899625
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
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.1 Hornwort species - Pond-lily species - Pondweed species Eastern North American Freshwater Aquatic Vegetation Macrogroup | M108 | 5.B.2.Na.1 |
| Group | 5.B.2.Na.1.a American White Water-lily - Sago Pondweed - Pondweed species Freshwater Aquatic Vegetation Group | G114 | 5.B.2.Na.1.a |
| Alliance | A3542 Water-milfoil species Aquatic Vegetation Alliance | A3542 | 5.B.2.Na.1.a |
| Association | CEGL008457 Twoleaf Water-milfoil Aquatic Vegetation | CEGL008457 | 5.B.2.Na.1.a |
Concept Lineage: This alliance has one association from A.3542 and one from A.2003.
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.