V.C. Hydromorphic rooted vegetation
V.C.2.N.a.17 American Eel-grass Permanently Flooded Temperate Herbaceous Alliance (A.1757)
VALLISNERIA AMERICANA PERMANENTLY FLOODED TEMPERATE HERBACEOUS ALLIANCE
Alliance Concept
Summary: This alliance consists of aquatic vegetation in alluvial rivers and springs dominated by Vallisneria americana. The extent and distribution of this alliance is only partly understood. The habitat includes alluvial rivers, above or extending to the upper limit of tidal influence. Stands are dominated by submergent or emergent plants with only minor floating-leaved components. Stands in the northeastern United States may additionally contain Potamogeton perfoliatus, Potamogeton epihydrus, Utricularia spp., and Eriocaulon aquaticum. New River occurrences have Elodea canadensis, Potamogeton foliosus, and Potamogeton nodosus. Stands in Florida may have dominance or codominance by Sagittaria kurziana or Stuckenia pectinata (= Potamogeton pectinatus). In addition, Heteranthera dubia (= Zosterella dubia) may be locally abundant. Further study is needed to fully characterize the variability in this alliance.
Synonymy:
Spring-run Stream, in part (FNAI 1990)
Spring-run Stream, in part (FNAI 1992b)
Tape-grass shallow shore (CAP 1998)
Comments:
Alliance Distribution
Range: This alliance occurs in Iowa, Connecticut, Delaware, Massachusetts, Maryland, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Kentucky, Virginia, West Virginia, North Carolina, and Florida; and in Canada in Ontario. It may occur in the Coastal Plain of Alabama, Georgia, and Mississippi. The species has a very broad range, extending from Nova Scotia to Minnesota and South Dakota south to Texas and east to Florida.
States: AL? CT DE FL GA? IA KY MA MD ME MS? NC NH NJ NY ON PA RI SC? TN VA VT WV
USFS Ecoregions: 212C:C, 221H:C, 231A:C, 232B:C, 232D:C, 251:P, M212:C, M221A:C, M221B:P, M221D:P
Federal Lands: NPS (Acadia); USFS (Apalachicola, Daniel Boone, Jefferson?, Ocala)
Alliance Sources
References: Allard 1990, CAP 1998, Campbell et al. 1990, FNAI 1990, FNAI 1992b, Faber-Langendoen et al. 1996, Schafale and Weakley 1990, Voss 1972, Wolfe 1990
V.C. Hydromorphic rooted vegetation
V.C.2.N.a.102 White Waterlily - Yellow Pondlily species Permanently Flooded Temperate Herbaceous Alliance (A.1984)
NYMPHAEA ODORATA - NUPHAR SPP. PERMANENTLY FLOODED TEMPERATE HERBACEOUS ALLIANCE
Alliance Concept
Summary: This alliance, common throughout most of the eastern and central United States and adjacent Canadian provinces, contains vegetation which may occur in a variety of slow-moving water bodies, including rivers, millponds, blackwater rivers, streams, shallow ponds or lakes, or on shores of deeper water bodies including freshwater tidal areas. The water depth is generally greater than 0.5 m and up to 2 m. Stands are dominated by hydromorphic rooted aquatic plants, typically Nuphar lutea (any of its various subspecies), with or without Nymphaea odorata. Emergent vegetation is less than 25%, and typically plant species diversity is low. Other species present may include Utricularia spp., Potamogeton spp., and others. In the north, Brasenia schreberi may be locally dominant. Other characteristic northern species include Nymphaea tetragona and Potamogeton amplifolius. Associates found in the Midwest include Polygonum amphibium. In the Southeast, examples may include the floating or emergent 'pad-leaved' species Nelumbo lutea or Nymphoides aquatica. Submerged aquatic species which may be present include Cabomba caroliniana, Ceratophyllum demersum, and Heteranthera dubia. Stands of this alliance are permanently to semipermanently flooded.
Synonymy:
Spring-run Stream, in part (FNAI 1990)
Open water/aquatic bed veg., natural impoundment pond (Ambrose 1990a)
Small Depression Pond, in part (Schafale and Weakley 1990)
Nuphar lutea herbaceous alliance, in part (Hoagland 1998a)
L5D2aI1a. Nuphar lutea (Foti et al. 1994)
Nymphaea odorata herbaceous alliance (Hoagland 1998a)
Comments: Field guidelines for separating floating-leaved aquatic alliances from submerged aquatic alliances are also needed.
Alliance Distribution
Range: This alliance is common throughout most of the eastern and central United States and adjacent Canadian provinces. It is also found in Oregon, Washington, California, Idaho, Colorado, and possibly Wyoming (?).
States: AL AR CA CO CT DE FL GA IA ID IL IN KY LA MA MB MD ME MI MN MO MS NC NH NJ NY OH OK ON OR PA RI SC TN TX VA VT WA WI WV WY?
USFS Ecoregions: 212C:C, 212H:P, 212I:P, 212J:C, 212K:P, 212L:C, 212M:P, 212N:P, 221A:C, 221B:C, 221E:C, 221H:C, 222C:C, 222D:C, 222G:?, 222H:C, 222J:C, 222K:C, 231B:C, 231G:C, 232A:C, 232B:C, 232C:C, 232D:C, 234A:C, 251C:C, 251D:C, 251E:C, M212:C, M221A:C, M221B:C, M221D:C, M331A:C, M331D:C, M331H:C, M332E:C, M333A:C, M333B:C, M333D:C
Federal Lands: DOD (Eglin, Fort Benning); NPS (Acadia, Carl Sandburg Home, Isle Royale, Voyageurs); USFS (Angelina, Conecuh, Croatan?, Davy Crockett, Kisatchie, Ocala, Ozark, Sabine, Sam Houston?, Talladega); USFWS (Okefenokee, Reelfoot)
Alliance Sources
References: Ambrose 1990a, FNAI 1990, Faber-Langendoen et al. 1996, Foti et al. 1994, Harris et al. 1996, Heineke 1987, Hoagland 1998a, Kovalchik 1993, Marr et al. 1980, Penfound 1952, Ramaley 1909, Sawyer and Keeler-Wolf 1995, Schafale and Weakley 1990, Wharton 1978, Wolfe 1990
Barrier Island and Maritime Live Oak Hammocks
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