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CEGL006142 Triantha glutinosa - Carex garberi Riverscour Wet Meadow
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Sticky Bog-asphodel - Elk Sedge Riverscour Wet Meadow
Colloquial Name: Northern Appalachian Calcareous Riverside Seep
Hierarchy Level: Association
Type Concept: This is a herb-dominated seepage community that develops on discharge areas of the shores of larger rivers in the glaciated northeastern United States and adjacent Canada. Semi-open conditions are maintained by ice-scouring and floodwaters. The circumneutral groundwater discharge supports a fen-like aspect, but on mineral rather than peat soils. The periodic disturbance and enriched nutrient conditions contribute to the high species richness of these seeps. The shore substrate may be sandy, gravelly, sometimes interspersed with bedrock. In some areas, the substrate is unconsolidated glacial material; in others, the substrate is sand and cobble held together by a tightly woven root mass. The vegetation is dominated by low to medium-height herbs, with cover usually 60-90%. Shrubs are usually present, but are often reduced to sprouts only one or a few years old due to the annual disturbance. The bryophyte layer may be locally well-developed, although not extensive overall. Characteristic herbaceous species include Lobelia kalmii, Parnassia glauca, Platanthera dilatata, Packera paupercula, Triantha glutinosa, Spiranthes lucida, Spiranthes romanzoffiana, Carex garberi, Carex viridula, Carex flava, Carex buxbaumii, Rhynchospora capillacea, Rhynchospora capitellata, Mentha arvensis, Equisetum arvense, Calamagrostis canadensis, Rubus pubescens, Doellingeria umbellata, Thalictrum pubescens, and Glyceria septentrionalis. Common shrubs include Alnus incana, Alnus viridis, Dasiphora fruticosa ssp. floribunda, Myrica gale, Spiraea alba, Salix eriocephala and other Salix species, and Cornus sericea. Bryophytes have not been well sampled across this type''s range; known bryophytes include many non-sphagnous species typical of fen conditions, including Bryum pseudotriquetrum, Campylium stellatum, Philonotis fontana, and Drepanocladus spp. The invasive exotics Tussilago farfara and Lythrum salicaria may occur in these seeps.
Diagnostic Characteristics: No Data Available
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: No Data Available
Floristics: The vegetation is dominated by low to medium-height herbs, with cover usually 60-90%. Shrubs are usually present, but are often reduced to sprouts only one or a few years old due to the annual disturbance. The bryophyte layer may be locally well-developed, although not extensive overall. Characteristic herbaceous species include Lobelia kalmii, Parnassia glauca, Platanthera dilatata, Packera paupercula (= Senecio pauperculus), Triantha glutinosa (= Tofieldia glutinosa), Spiranthes lucida, Spiranthes romanzoffiana, Carex garberi, Carex viridula, Carex flava, Rhynchospora capillacea, Rhynchospora capitellata, Mentha arvensis, Equisetum arvense, Calamagrostis canadensis, Rubus pubescens, Doellingeria umbellata (= Aster umbellatus), Thalictrum pubescens, and Glyceria septentrionalis. Common shrubs include Alnus incana, Alnus viridis, Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda), Myrica gale, Spiraea alba, Salix eriocephala and other Salix species, and Cornus sericea. Bryophytes have not been well sampled across this type''s range; known bryophytes include many non-sphagnous species typical of fen conditions, including Bryum pseudotriquetrum, Campylium stellatum, Philonotis fontana, and Drepanocladus spp. The invasive exotics Tussilago farfara and Lythrum salicaria may occur in these seeps.
Dynamics: Periodic natural disturbance from flooding and ice scouring is required.
Environmental Description: These are herb-dominated seepage communities that develop on discharge areas of the shores of larger rivers in the glaciated northeastern United States and adjacent Canada. Semi-open conditions are maintained by ice scouring and floodwaters. The circumneutral groundwater discharge supports a fen-like aspect, but on mineral rather than peat soils. The periodic disturbance and enriched nutrient conditions contribute to the high species richness of these seeps. The shore substrate may be sandy, gravelly, sometimes interspersed with bedrock. In some areas, the substrate is unconsolidated glacial material; in others, the substrate is sand and cobble held together by a tightly woven root mass.
Geographic Range: This herb-dominated seepage develops along larger rivers in the glaciated northeastern United States and adjacent Canada.
Nations: US
States/Provinces: CT, MA, ME, NH, NY, VT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689052
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3?
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.4 Eastern North American Riverscour Vegetation Macrogroup | M881 | 2.C.4.Nd.4 |
| Group | 2.C.4.Nd.4.d Gray Alder / <i>Spartina pectinata - Deschampsia cespitosa</i> Floodplain Vegetation | G925 | 2.C.4.Nd.4.d |
| Alliance | A3826 <i>Andropogon gerardii - Campanula rotundifolia - Anemone virginiana var. alba</i> Riverscour Alliance | A3826 | 2.C.4.Nd.4.d |
| Association | CEGL006142 Sticky Bog-asphodel - Elk Sedge Riverscour Wet Meadow | CEGL006142 | 2.C.4.Nd.4.d |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Circumneutral/Calcareous Riverbank Seep (Nichols et al. 2001)
? New England Riverside Seep Community (Rawinski 1984a)
? New England Riverside Seep Community (Rawinski 1984a)
- Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
- Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero, editors. 2014a. Ecological communities of New York state. Second edition. A revised and expanded edition of Carol Reschke''s ecological communities of New York state. New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY.
- Fernald, M. L., and K. M. Wiegand. 1910. A summer''s botanizing in eastern Maine and western New Brunswick. Rhodora 12:101-146.
- Gawler, S. C. 2002. Natural landscapes of Maine: A guide to vegetated natural communities and ecosystems. Maine Natural Areas Program, Department of Conservation, Augusta, ME.
- Gawler, S. C., and A. Cutko. 2010. Natural landscapes of Maine: A classification of vegetated natural communities and ecosystems. Maine Natural Areas Program, Department of Conservation, Augusta.
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- Rawinski, T. 1984a. Natural community description abstract - southern New England calcareous seepage swamp. Unpublished report. The Nature Conservancy, Boston, MA. 6 pp.
- Sperduto, D. D., and W. F. Nichols. 2004. Natural communities of New Hampshire: A guide and classification. New Hampshire Natural Heritage Bureau, DRED Division of Forests and Lands, Concord. 242 pp.
- Swain, P. C., and J. B. Kearsley. 2014. Classification of the natural communities of Massachusetts. Version 2.0. Natural Heritage & Endangered Species Program, Massachusetts Division of Fisheries and Wildlife. Westborough, MA. [http://www.mass.gov/nhesp/http://www.mass.gov/eea/agencies/dfg/dfw/natural-heritage/natural-communities/classification-of-natural-communities.html]
- Thompson, E. H., and E. R. Sorenson. 2005. Wetland, woodland, wildland: A guide to the natural communities of Vermont. The Nature Conservancy and the Vermont Department of Fish and Wildlife. University Press of New England, Hanover, NH. 456 pp.