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Panicum hemitomon - Eleocharis equisetoides - Rhynchospora inundata Marsh
Translated Name: Maidencane - Horsetail Spikerush - Narrow-fruit Horned Beaksedge Marsh
Common Name: Atlantic Coastal Plain Maidencane Limesink Pond
Unique Identifier: CEGL004127
Classification Approach: International Vegetation Classification (IVC)
Summary: This association covers emergent zones of Coastal Plain limesink ponds. Stands are dominated by Panicum hemitomon, Eleocharis equisetoides, and Rhynchospora inundata. Other characteristic species include Eleocharis elongata, Eleocharis robbinsii, Rhynchospora careyana, Eriocaulon compressum, Xyris smalliana, Polygala cymosa, and Juncus abortivus. The use of Eleocharis species as nominals and in the description would indicate that this association is intended to cover deeper ponds, or the deeper zones of those ponds.



Classification

Classification Confidence: Moderate
Classification Comments: Coastal Plain pond communities need reassessment, with additional information from the Deep South and Delmarva-New Jersey-New England. One example of a maidencane pond at Fort Benning, Georgia (L6 Pond), has seasonal codominance by Eleocharis robbinsii and Eleocharis tricostata. It is probably best placed here, but placement between this type (CEGL004127) and CEGL007792 is somewhat problematic because the two associations are not perfectly distinguished from one another.

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.4 - Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland
Division 2.C.4.Ne - Atlantic & Gulf Coastal Marsh, Wet Meadow & Shrubland
Macrogroup Atlantic & Gulf Coastal Plain Wet Prairie & Marsh
Group Atlantic & Gulf Coastal Plain Pondshore & Wet Prairie
Alliance Maidencane Pondshore Marsh

This is the revised vegetation hierarchy. For more information see Classification Sources and usnvc.org.

Similar Associations
Unique Identifier Name
CEGL004132 Rhynchospora (careyana, inundata) Marsh
CEGL004960 Eleocharis (elongata, equisetoides) - Rhynchospora tracyi Marsh
CEGL006338 Panicum hemitomon - Panicum verrucosum Marsh
CEGL007792 Panicum hemitomon - Pluchea (camphorata, rosea) - Ludwigia spp. Marsh



Related Concepts from Other Classifications

Related Subnational Community Units
These data are subject to substantial ongoing revision and may be out of date for some states.
In the U.S., contact the state Heritage Program for the most complete and up-to-date information at: http://www.natureserve.org/natureserve-network.
Information from programs in other jurisdictions will be posted when they are made available.
Subnation Concept Name Relationship to Standard Confidence Reference
Alabama Panicum hemitomon - Eleocharis equisetoides - Rhynchospora inundata Herbaceous Vegetation Equivalent Certain Schotz pers. comm.
North Carolina Small Depression Pond (Typic Marsh Subtype) Equivalent Certain Schafale 2012
South Carolina Depression Meadow Intersects   Nelson 1986
South Carolina Limestone Sink Intersects   Nelson 1986


Other Related Concepts
Related Concept Name: Limnetic Zone, Limesink Lake
Relationship: ? - Undetermined
Reference: Ambrose, J. 1990a. Georgia's natural communities--A preliminary list. Unpublished document. Georgia Natural Heritage Inventory. 5 pp.
Related Concept Name: Littoral Zone, Limesink Lake
Relationship: ? - Undetermined
Reference: Ambrose, J. 1990a. Georgia's natural communities--A preliminary list. Unpublished document. Georgia Natural Heritage Inventory. 5 pp.
Related Concept Name: Small Depression Pond
Relationship: B - Broader
Reference: Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina. Third approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh. 325 pp.
Related Concept Name: Small Depression Pond (Typic Marsh Subtype)
Relationship: = - Equivalent
Reference: Schafale, M. 2000. Fourth approximation guide. Coastal Plain. January 2000 draft. North Carolina Natural Heritage Program, Raleigh.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES203.044 Southeastern Coastal Plain Natural Lakeshore
CES203.262 Southern Atlantic Coastal Plain Depression Pond
CES203.558 East Gulf Coastal Plain Depression Pond


NatureServe Conservation Status
Global Status: G3 (15Oct2002)
Rounded Global Status: G3 - Vulnerable
Reasons: This seasonally flooded herbaceous association is found in the emergent zones of ponds in the southern Coastal Plain. It is restricted in distribution and extent. Many examples have been altered or destroyed, for example converted to farm ponds or affected by erosion from adjoining agricultural lands. The total number of occurrences is not known, but only a few extensive, high-quality examples are thought to remain. Remaining unprotected examples are vulnerable to damage or degradation from fire exclusion, off-road vehicles, local hydrologic changes (ditching and draining), and land-use change (including residential development and shore conversion). Many examples have been degraded, converted, or destroyed. Some examples are in areas of extensive human population growth, and the best hope for conservation is on public lands (e.g., military bases).

Distribution
Color legend for Distribution Map
United States Distribution: ALpotentially occurs, FLpotentially occurs, GA, NC, SC
Global Distribution: United States
Global Range: This pond association is found in the Atlantic (and possibly East Gulf) Coastal Plain from the Carolinas, south and west possibly to Alabama and Florida.

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Subtropical Division
Province Name: Outer Coastal Plain Mixed Forest Province
Province Code: 232 Occurrence Status: Confident or certain
Section Name: Coastal Plains and Flatwoods, Lower Section
Section Code: 232B Occurrence Status: Confident or certain
Section Name: Atlantic Coastal Flatwoods Section
Section Code: 232C Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: Stands are dominated by Panicum hemitomon, Eleocharis equisetoides, and Rhynchospora inundata. Other characteristic species include Eleocharis elongata, Eleocharis robbinsii, Rhynchospora careyana, Eriocaulon compressum, Xyris smalliana, Polygala cymosa, and Juncus abortivus. Ponds seen on the De Soto National Forest (Jones and Perry counties, Mississippi) have two distinct zones. A less diverse zone of longer hydroperiod (cf. CEGL004127) is dominated by low graminoids and forbs. Eleocharis robbinsii and Eleocharis melanocarpa may exhibit heavy dominance; Carex glaucescens, Juncus repens, and Proserpinaca pectinata are also typically present. A second distinct zone of shorter hydroperiod (cf. CEGL007792) is dominated by Panicum hemitomon with other grasses and graminoids such as Saccharum giganteum, Saccharum brevibarbe, Scirpus cyperinus, Dichanthelium scabriusculum, Panicum rigidulum, Leersia sp., and Rhynchospora glomerata. In addition, Fuirena breviseta, Ludwigia pilosa, and Pluchea rosea are also found there.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Hypericum adpressum G3 Flowering forb Herb (field)      
 
 
Eleocharis equisetoides G3 Graminoid Herb (field)  
 
 
Panicum hemitomon G3 Graminoid Herb (field)  
 
 
Rhynchospora inundata G3 Graminoid Herb (field)  
 
 


At-Risk Species Reported for this Association
Scientific Name
  (Common Name)
NatureServe Global Status U.S. Endangered Species Act Status
Hypericum adpressum
  (Creeping St. John's-wort)
G3  


Environmental Setting

Wetland Indicator: Y
Environmental Summary: This association represents the emergent zones of Coastal Plain limesink ponds.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): A.S. Weakley
Element Description Edition Date: 21May2002
Element Description Author(s): M. Pyne
NatureServe Conservation Status Factors Edition Date: 19Aug2002
NatureServe Conservation Status Factors Author(s): A.S. Weakley, mod. M. Pyne

Ecological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).


References
  • Ambrose, J. 1990a. Georgia's natural communities--A preliminary list. Unpublished document. Georgia Natural Heritage Inventory. 5 pp.

  • Nelson, J. B. 1986. The natural communities of South Carolina: Initial classification and description. South Carolina Wildlife and Marine Resources Department, Division of Wildlife and Freshwater Fisheries, Columbia, SC. 55 pp.

  • Schafale, M. 2000. Fourth approximation guide. Coastal Plain. January 2000 draft. North Carolina Natural Heritage Program, Raleigh.

  • Schafale, M. 2003b. Fourth approximation guide. Coastal Plain communities. March 2003 draft. North Carolina Natural Heritage Program, Raleigh.

  • Schafale, M. P. 2012. Classification of the natural communities of North Carolina, 4th Approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh.

  • Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina. Third approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh. 325 pp.

  • Schotz, Al. Personal communication. Community Ecologist. Alabama Natural Heritage Program. Huntingdon College, Massey Hall, 1500 East Fairview Avenue, Montgomery, AL 36106-2148.

  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.


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