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CEGL006853 Juncus pelocarpus - Rhynchospora alba - (Nymphaea odorata ssp. odorata) Marsh
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Brown-fruit Rush - White Beaksedge - American White Water-lily Marsh
Colloquial Name: Coastal Plain Emergent Millpond Bog
Hierarchy Level: Association
Type Concept: This early-successional community type develops along drawdown edges or in the basins of shallow millponds, beaver ponds, and other impoundments of Inner Coastal Plain stream drainages. It is currently known from four stream drainages associated with Main Creek and the Magothy River in Maryland. This vegetation forms as a result of water levels lowering due to a breach or dam failure. Substrates are extremely acidic (mean pH = 3.8) consisting of mucky peats of variable depths. Stands are typically small-patch with sizes ranging from 0.3 to 1.41 acres. The vegetation is patchy, consisting of species such as Nymphaea odorata ssp. odorata, Dulichium arundinaceum, and Decodon verticillatus in low, mucky pockets. Dense mats of Triadenum virginicum, Juncus pelocarpus, Rhynchospora alba, Eleocharis olivacea var. olivacea, Juncus canadensis, and Carex canescens are commonly interspersed amongst these pockets. Shrubs and small trees of Acer rubrum, Chamaedaphne calyculata, Clethra alnifolia, Vaccinium macrocarpon, Aronia arbutifolia, Alnus serrulata, and Magnolia virginiana may occupy seepage edges, hummocks of tree bases, or be scattered throughout basins at low cover. Additional low-cover associates may include Juncus effusus var. solutus, Utricularia subulata, Rhexia virginica, Carex atlantica, Glyceria obtusa, Xyris jupicai, Sphagnum rubellum, and Sphagnum recurvum.
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 patchy, consisting of species such as Nymphaea odorata ssp. odorata, Dulichium arundinaceum, and Decodon verticillatus in low, mucky pockets. Dense mats of Triadenum virginicum (= Hypericum virginicum), Juncus pelocarpus, Rhynchospora alba, Eleocharis olivacea var. olivacea, Juncus canadensis, and Carex canescens are commonly interspersed amongst these pockets. Shrubs and small trees of Acer rubrum, Chamaedaphne calyculata, Clethra alnifolia, Vaccinium macrocarpon, Aronia arbutifolia, Alnus serrulata, and Magnolia virginiana may occupy seepage edges, hummocks of tree bases, or be scattered throughout basins at low cover. Additional low-cover associates may include Juncus effusus var. solutus, Utricularia subulata, Rhexia virginica, Carex atlantica, Glyceria obtusa, Xyris jupicai, Sphagnum rubellum, and Sphagnum recurvum.
Dynamics: No Data Available
Environmental Description: This early-successional community type develops along drawdown edges or in the basins of shallow millponds, beaver ponds, and other impoundments of inner Coastal Plain stream drainages. It is currently known from four stream drainages associated with Main Creek and the Magothy River in Maryland. This vegetation forms as a result of water levels lowering due to a breach or dam failure. Substrates are extremely acidic (mean pH = 3.8) consisting of mucky peats of variable depths. Stands are typically small-patch with sizes ranging from 0.3 to 1.41 acres.
Geographic Range: This community type is supported by plot data taken along stream drainages of Main Creek and the Magothy River, Anne Arundel County, Maryland. It could possibly also occur in New Jersey.
Nations: US
States/Provinces: MD, NJ?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.917083
Confidence Level: Low - Poorly Documented
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.h beaksedge spp. - spikerush spp. - meadowbeauty spp. Pondshore Group | G916 | 2.C.4.Ne.2.h |
| Alliance | A3397 Beaksedge species - Bluejoint - Virginia Meadowbeauty Coastal Plain Pondshore Marsh Alliance | A3397 | 2.C.4.Ne.2.h |
| Association | CEGL006853 Brown-fruit Rush - White Beaksedge - American White Water-lily Marsh | CEGL006853 | 2.C.4.Ne.2.h |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Coastal Plain Emergent Millpond Bog (Harrison and Knapp 2010)
- Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
- Harrison, J. W., and W. M. Knapp. 2010. Ecological classification of groundwater-fed seepage wetlands of the Maryland Coastal Plain. Maryland Department of Natural Resources, Wildlife and Heritage Services, Natural Heritage Program, Annapolis, MD. 100 pp.