National Forests in Florida Final Report
Peanutgrass - Maidencane Depression Pond
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- Coastal Plain Limesink Pond, Witchgrass Variant
Peanutgrass - Maidencane Depression PondElement Identifiers NVCS association: Amphicarpum muehlenbergianum - (Panicum hemitomon) Herbaceous Vegetation Database Code: CEGL008588 Formation: Seasonally flooded temperate or subpolar grassland Alliance: PANICUM HEMITOMON SEASONALLY FLOODED TEMPERATE HERBACEOUS ALLIANCE (V.A.5.N.k.18) Element Concept Summary: These Coastal Plain depression ponds of the South Atlantic, East Gulf Coastal Plain, and Florida peninsula are dominated by Amphicarpum muehlenbergianum. In addition, Panicum hemitomon may be present or may dominate adjacent zones. This association is intended to accommodate distinctive stands with dominance or at least codominance by Amphicarpum muehlenbergianum. This species is primarily found in Florida and southern Georgia, and is rare or absent in other southeastern states. Environment: This vegetation is found in Coastal Plain depressions of the South Atlantic Coastal Plain, East Gulf Coastal Plain, and Florida peninsula. Vegetation: Stands of this vegetation are dominated by Amphicarpum muehlenbergianum. In addition, Panicum hemitomon may be present or may dominate adjacent zones. Other herbaceous species are present at much lower cover values. These include Rhexia mariana, Eupatorium capillifolium, Eupatorium leptophyllum, Xyris elliottii, Fuirena scirpoidea, Fuirena squarrosa, Lachnanthes caroliana, Rhexia nashii, and Rhynchospora fascicularis. Shrubs include Hypericum brachyphyllum, Hypericum myrtifolium, Ilex glabra, Ilex myrtifolia, Morella cerifera, and/or Vaccinium darrowii. In addition, scattered Pinus elliottii and/or Taxodium ascendens may be present in some stands. There may be some variability in zonation within ponds; in one pond on the Apalachicola National Forest, a shoreward zone contains more Amphicarpum muehlenbergianum and less Panicum hemitomon, while a central zone of longer hydroperiod was observed with greater Panicum hemitomon dominance, lacking Amphicarpum. Dynamics: Fire may be frequent in stands of this association, which is part of a Pinus palustris-dominated landscape. Similar Associations: No information Synonymy: No information Comments: This association is intended to accommodate distinctive herbaceous stands found in Coastal Plain depression ponds with dominance or at least codominance by Amphicarpum muehlenbergianum. Conservation Ranking & Rare Species GRank: G2G3 (02-05-21): This community is a depression pond of the South Atlantic Coastal Plain, East Gulf Coastal Plain, and Florida peninsula. Occurrences are relatively few and restricted to a narrow geographic area. Some examples are protected on U.S. Forest Service lands, but protection is incomplete and threats include overgrazing, damage from off-road vehicles, removal of timber upslope and associated erosion, succession of woody species, and permanent loss of water due to local hydrologic changes. High-ranked species: No information Element Distribution Range: This association is possible in the South Atlantic Coastal Plain, East Gulf Coastal Plain, and Florida peninsula. States: FL Crosswalk to State Classifications: FL: Coastal Interdunal Swale, in part (FL 1992) TNC Ecoregions: 53:P, 55:C, 56:C USFS Ecoregions: 232Bf:CCC, 232Ca:CCC Federal Lands: USFS (Apalachicola, Ocala, Osceola) Element Sources References: FNAI 1992a, NatureServe Ecology - Southeast U.S. unpubl. data Open Limesinks and Emergent Vegetation Coastal Plain Limesink Pond, Witchgrass VariantElement Identifiers NVCS association: Dichanthelium wrightianum - Dichanthelium erectifolium Herbaceous Vegetation Database Code: CEGL004105 Formation: Seasonally flooded temperate or subpolar grassland Alliance: DICHANTHELIUM (ERECTIFOLIUM, WRIGHTIANUM) - RHYNCHOSPORA FILIFOLIA SEASONALLY FLOODED HERBACEOUS ALLIANCE (V.A.5.N.k.9) Element Concept Summary: This association includes the mid-margins of limesinks and other Coastal Plain ponds, which are flooded for a shorter period of time than low margins. Dichanthelium wrightianum and/or Dichanthelium erectifolium are dominant in stands. Rhynchospora filifolia may be present. Other characteristic species include Rhexia cubensis, Panicum rigidulum var. combsii, Panicum rigidulum var. pubescens, Panicum verrucosum, Lachnanthes caroliana, Bartonia verna, Lachnocaulon minus, and Centella erecta. Environment: This association includes the mid-margins of limesinks and other Coastal Plain ponds, which are flooded for a shorter period of time than the lower margins. These mid-margins are seasonally flooded but with a shorter hydroperiod. Vegetation: Dichanthelium wrightianum and Dichanthelium erectifolium are dominant in stands. Rhynchospora filifolia may be present. Other characteristic species include Rhexia cubensis, Panicum rigidulum var. combsii, Panicum rigidulum var. pubescens, Panicum verrucosum, Lachnanthes caroliana, Bartonia verna, Lachnocaulon minus, and Centella erecta. One stand assigned here from the Apalachicola National Forest apparently has dominance by Dichanthelium sabulorum var. thinium (= Dichanthelium portoricense). This needs further investigation. Dynamics: See Summary Similar Associations: Rhynchospora filifolia - Juncus abortivus Herbaceous Vegetation (CEGL004131)--with a longer hydroperiod. Synonymy: No information Comments: Coastal Plain pond communities need reassessment, with additional information from the Deep South and Delmarva-New Jersey-New England. Some occurrences may be a mosaic of Dichanthelium-dominated (CEGL004105) and Rhynchospora-dominated (CEGL004131) zones. In some other examples the zones may be more distinctive and spatially separated. Conservation Ranking & Rare Species GRank: G2? (98-01-11): This community is restricted in distribution and extent. Most occurrences are degraded by one or more of the following factors: fire exclusion, off-road vehicles, water-table reductions, residential development and shore conversion. High-ranked species: No information Element Distribution Range: This association is found in the Atlantic and Gulf coastal plains of the United States from North Carolina south to Florida and west to Mississippi. States: AL? FL GA MS NC SC Crosswalk to State Classifications: NC: Small Depression Pond, in part (NC 1990) SC: No equivalent (SC 1986) TNC Ecoregions: 43:C, 53:C, 56:C, 57:C USFS Ecoregions: 232Bg:CCC, 232Bj:CCP, 232Bk:CC?, 232Cb:CCC, 232Ch:CCC Federal Lands: DOD (Fort Benning); USFS (Apalachicola, Croatan, De Soto) Element Sources References: Schafale and Weakley 1990 Open Limesinks and Emergent Vegetation Directory: library library -> Strategic Plan South Sudan Country Office Context library -> The World Order of Bahá’u’lláh Selected Letters library -> Ieee/iee electronic Library (iel) library -> [0] B. Hardware [2] library -> [1] B. Hardware [1] library -> Florida public service commission library -> 1 1 before the florida public service commission 2 docket no. 070650-ei 3 In the Matter of: 4 petition to determine need for turkey point nuclear units 6 and 7 electrical 5 power plant, by florida power & light company library -> Archived Online Exhibit Download 3.16 Mb. Share with your friends:
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