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Uniola paniculata - Hydrocotyle bonariensis Grassland
Translated Name: Sea-oats - Beach Marsh-pennywort Grassland
Common Name: Sea-oats Dune Grassland
Unique Identifier: CEGL004040
Classification Approach: International Vegetation Classification (IVC)
Summary: This dune grassland is the characteristic foredune vegetation along the southern Atlantic Coast, from the northeastern coast of Florida (Fort Matanzas National Monument) ranging northward into coastal North Carolina, east of the range of Schizachyrium maritimum, and north of the tropical species of southern Florida. Uniola paniculata is the dominant grass. Other characteristic species include Hydrocotyle bonariensis, Iva imbricata, Spartina patens, and Ipomoea imperati.



Classification

Classification Confidence: Low
Classification Comments: Based on Johnson and Muller (1993a). Estimated extent of about 2200 acres remaining in Florida. Distribution in South Carolina needs verification. Characteristic and dominant species all listed for Maritime Grassland (Nelson 1986).

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.B - Temperate & Boreal Grassland & Shrubland
Formation 2.B.4 - Temperate to Polar Scrub & Herb Coastal Vegetation
Division 2.B.4.Na - Eastern North American Coastal Scrub & Herb Vegetation
Macrogroup Eastern North American Coastal Dune & Grassland
Group South Atlantic & Gulf Coastal Dune & Grassland
Alliance Sea-oats Dune Grassland

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

Similar Associations
Unique Identifier Name
CEGL002218 Uniola paniculata - (Panicum amarum) - Croton punctatus Grassland
CEGL004041 Uniola paniculata - Panicum amarum var. amarulum - Iva imbricata Grassland
CEGL004234 Smilax auriculata / Heterotheca subaxillaris - Strophostyles helvula - (Uniola paniculata) Grassland



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These data are subject to substantial ongoing revision and may be out of date for some states.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
Florida Beach Dune Broader   FNAI 1997
North Carolina Dune Grass (Southern Subtype) Equivalent Certain Schafale 2012


Other Related Concepts
Related Concept Name: Beach Dune
Relationship: B - Broader
Reference: FNAI [Florida Natural Areas Inventory]. 1990. Guide to the natural communities of Florida. Florida Natural Areas Inventory and Florida Department of Natural Resources, Tallahassee. 111 pp.
Related Concept Name: Dune Grass
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: Northeast Beach Dune
Relationship: = - Equivalent
Reference: Johnson, A. F., and J. W. Muller. 1993a. An assessment of Florida's remaining coastal upland natural communities: Final summary report. The Nature Conservancy, Florida Natural Areas Inventory, Tallahassee. 37 pp.
Related Concept Name: Northeast Florida beach dune community
Relationship: ? - Undetermined
Reference: Johnson, A. F., and J. W. Muller. 1993b. An assessment of Florida's remaining coastal upland natural communities: Northeast Florida. The Nature Conservancy, Florida Natural Areas Inventory, Tallahassee. 10 pp. plus appendices.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES203.273 Southern Atlantic Coastal Plain Dune and Maritime Grassland


NatureServe Conservation Status
Global Status: G3? (30Jan2001)
Rounded Global Status: G3 - Vulnerable
Reasons: This association is limited to dynamic coastal dunes of the south Atlantic Coastal Plain. It is fairly restricted geographically, and many occurrences have been destroyed or altered by coastal development. Beach driving also impacts these communities.

Distribution
Color legend for Distribution Map
United States Distribution: FL, GA, NC, SC
Global Distribution: United States
Global Range: This beach dune vegetation occurs along the southern Atlantic Coast, from the northeastern coast of Florida (Fort Matanzas National Monument) ranging northward into coastal North Carolina.

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: Atlantic Coastal Flatwoods Section
Section Code: 232C Occurrence Status: Confident or certain
Section Name: Florida Coastal Lowlands (Eastern) Section
Section Code: 232G Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: Uniola paniculata is the dominant grass in this beach dune community. Other characteristic species include Hydrocotyle bonariensis, Iva imbricata, Spartina patens, Ipomoea imperati, Heterotheca subaxillaris, and Panicum amarum.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Hydrocotyle bonariensis G3 Flowering forb Herb (field)    
 
 
Uniola paniculata G3 Graminoid Herb (field)  
 
 


Environmental Setting

Wetland Indicator: N
Environmental Summary: This sea-oats beach dune community occurs along the southern Atlantic Coast, from the northeastern coast of Florida (Fort Matanzas National Monument) ranging northward into coastal North Carolina.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): A.S. Weakley and K.D. Patterson after Johnson and Muller (1993a)
Element Description Edition Date: 04Jan2008
Element Description Author(s): A.S. Weakley, K.D. Patterson, H. Summer
NatureServe Conservation Status Factors Edition Date: 30Jan2001
NatureServe Conservation Status Factors Author(s): A.S. Weakley

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


References
  • FNAI [Florida Natural Areas Inventory]. 1990. Guide to the natural communities of Florida. Florida Natural Areas Inventory and Florida Department of Natural Resources, Tallahassee. 111 pp.

  • FNAI [Florida Natural Areas Inventory]. 1992a. Natural communities. Unpublished document. The Nature Conservancy, Florida Natural Areas Inventory, Tallahassee. 6 pp.

  • FNAI [Florida Natural Areas Inventory]. 2010a. Guide to the natural communities of Florida: 2010 edition. Florida Natural Areas Inventory, Tallahassee, FL.

  • Johnson, A. F., and J. W. Muller. 1993a. An assessment of Florida's remaining coastal upland natural communities: Final summary report. The Nature Conservancy, Florida Natural Areas Inventory, Tallahassee. 37 pp.

  • Johnson, A. F., and J. W. Muller. 1993b. An assessment of Florida's remaining coastal upland natural communities: Northeast Florida. The Nature Conservancy, Florida Natural Areas Inventory, Tallahassee. 10 pp. plus appendices.

  • 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.

  • Peet, R. K., T. R. Wentworth, M. P. Schafale, and A.S. Weakley. No date. Unpublished data of the North Carolina Vegetation Survey. University of North Carolina, Chapel Hill.

  • 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.

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


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