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Hypericum reductum / Aristida stricta Wet Dwarf-shrubland
Translated Name: Atlantic St. John's-wort / Pineland Three-awn Wet Dwarf-shrubland
Unique Identifier: CEGL003954
Classification Approach: International Vegetation Classification (IVC)
Summary: This association represents very small-scale and localized depressions or swales in extremely xeric sandhills in southeastern North Carolina. Hypericum reductum dominates the shrub layer, while other scattered shrubs such as Lyonia mariana and Gaylussacia dumosa (= var. dumosa) may be present. Aristida stricta and Andropogon spp. are the dominant herbs. In this landscape, Aristida stricta is restricted to this community, apparently because of the extremely xeric conditions of the surrounding sandhill community [see Pinus palustris / Quercus laevis - Quercus geminata / Rhynchospora megalocarpa Woodland (CEGL003590)].



Classification

Classification Confidence: Low - Poorly Documented
Classification Comments: Apparently described from the Highway 421 sandridge north of Wilmington, NC. It is not clear if this type occurs anywhere else (M. Schafale pers. comm.). It is uncertain how to interpret this community. Its dynamics and classification are uncertain, but it forms striking openings in the longleaf landscape.

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 Southeastern Coastal Plain Pondshore Marsh

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



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These data are subject to substantial ongoing revision and may be out of date for some states.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
North Carolina Wet Pine Flatwoods (Depression Subtype) Equivalent Certain Schafale 2012


Other Related Concepts
Related Concept Name: Vernal Pool
Relationship: ? - Undetermined
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: Wet Sandy Pine Savanna (Depression Subtype)
Relationship: = - Equivalent
Reference: Schafale, M. 2003b. Fourth approximation guide. Coastal Plain communities. March 2003 draft. North Carolina Natural Heritage Program, Raleigh.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES203.265 Central Atlantic Coastal Plain Wet Longleaf Pine Savanna and Flatwoods


NatureServe Conservation Status
Global Status: G1G2Q (08Aug2002)
Rounded Global Status: G1 - Critically Imperiled
Reasons: This association is geographically confined to a very small area in the Outer Coastal Plain of North Carolina, near Wilmington. In this region it is confined to localized sandhill swales or depression where it is susceptible to fire regime and hydrological alterations. It is further threatened by industrial and residential development, as well as off-road vehicle traffic.

Distribution
Color legend for Distribution Map
United States Distribution: NC
Global Distribution: United States
Global Range: This association is endemic to the Outer Coastal Plain of southeastern 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


Vegetation


Environmental Setting

Wetland Indicator: Y
Environmental Summary: This type occurs in rounded, low depressions or swales in the Outer Coastal Plain Sandhills of North Carolina. These areas do not appear to retain water from precipitation events, but have a high water table at or near the surface although the water table is not so high as to eliminate the Aristida stricta (which does not tolerate flooding). Limestone underlies much of the area, but the sand is deep enough to reduce the influence of the limestone (M. Schafale pers. comm.).


Dynamic Processes

Dynamics: All known sites are less than acre in size and embedded in a matrix of pyrogenic Pinus palustris vegetation. These small patches almost certainly burned along with the surrounding matrix (M. Schafale pers. comm.).


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): A.S. Weakley
Element Description Edition Date: 08Aug2002
Element Description Author(s): R.E. Evans
NatureServe Conservation Status Factors Edition Date: 08Aug2002
NatureServe Conservation Status Factors Author(s): A.S. Weakley, mod. R.E. Evans

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


References
  • 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.

  • Schafale, Mike P. Personal communication. Ecologist, North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh.

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


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Data last updated: November 2016