Print Report

CEGL007388 Liquidambar styraciflua - Acer rubrum / Carex spp. - Sphagnum spp. Seep Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Sweetgum - Red Maple / Sedge species - Peatmoss species Seep Forest

Colloquial Name: Upland Sweetgum - Red Maple Pond

Hierarchy Level:  Association

Type Concept: This association is designed to accommodate a variety of isolated, poorly understood seasonally flooded forests of upland depressions in the Southern Blue Ridge and the adjacent and submontane Piedmont. This includes an example in Cades Cove in the Great Smokies National Park, an example in the Piedmont portion of the Chattahoochee National Forest (Georgia), the Bankhead National Forest (Alabama). Stands assigned to this concept are dominated by some combination of Liquidambar styraciflua and/or Acer rubrum, possibly with Nyssa sylvatica and/or Liriodendron tulipifera. Some shrubs that may be found include Cornus amomum, Cornus foemina, and Alnus serrulata. Some woody vines which are possible components include Berchemia scandens, Decumaria barbara, and Smilax laurifolia. Herbs (which may be abundant to sparse) include Carex intumescens, Carex spp., Chasmanthium sessiliflorum, Dichanthelium dichotomum var. dichotomum, Dichanthelium spp., Leersia spp., Rhynchospora capitellata, Mitchella repens, and Arisaema triphyllum. Some sites may have ground layers dominated by vascular plants (especially graminoids), others dominated by Sphagnum spp. One of the Sphagnum species associated with these forests may be a disjunct Coastal Plain species, Sphagnum cuspidatum. The variable composition of stands assigned here and the lack of understanding of the dynamics of this type (successional trends, disturbance, hydrology) mean that the type is somewhat poorly defined. More information is needed.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association concept was originally based on one site in Cades Cove (Gum Swamp) at 535 m (1750 feet) elevation. The area is heavily browsed by deer. A similar site upslope has Acer rubrum (var. trilobum?) occurring with Liquidambar styraciflua. One of the Sphagnum species associated with these forests may be a disjunct Coastal Plain species, Sphagnum cuspidatum (B. Dellinger pers. comm.). More information is needed about the naturalness of these examples. The cited vegetation at Uwharrie National Forest is not actually an upland depression swamp and is thought to be successional vegetation (M. Schafale pers. comm. 2007). The status of a purported example at Duke Forest (Durham or Orange counties, North Carolina) is not known. The naturalness of vegetation at these Piedmont locations is unclear (M. Schafale pers. comm. 2001); this may represent a degraded form of ~Quercus phellos / Carex (albolutescens, intumescens, joorii) / Climacium americanum Wet Forest (CEGL007403)$$. This association (with an expanded and generalized concept) is being utilized for a sample from the Chattahoochee National Forest (Georgia Piedmont). Data are also available from the Bankhead National Forest (Work Center Gum Pond).

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Stands assigned to this concept are dominated by some combination of Liquidambar styraciflua and/or Acer rubrum, possibly with Nyssa sylvatica and/or Liriodendron tulipifera. Some shrubs that may be found include Cornus amomum, Cornus foemina, and Alnus serrulata. Some woody vines which are possible components include Berchemia scandens, Decumaria barbara, and Smilax laurifolia. Herbs (which may be abundant to sparse) include Carex intumescens, Carex spp., Chasmanthium sessiliflorum, Dichanthelium dichotomum var. dichotomum, Dichanthelium spp., Leersia spp., Rhynchospora capitellata, Mitchella repens, and Arisaema triphyllum. Some sites may have ground layers dominated by vascular plants (especially graminoids), others dominated by Sphagnum spp. One of the Sphagnum species associated with these forests may be a disjunct Coastal Plain species, Sphagnum cuspidatum (= var. floridanum?).

Dynamics:  The variable composition of stands assigned here, and the lack of understanding of the dynamics of this type (successional trends, disturbance, hydrology) mean that the type is somewhat poorly defined. More information is needed.

Environmental Description:  Stands assigned to this association occur in a variety of upland depressions in the Southern Blue Ridge and Piedmont.

Geographic Range: The full range of this association is unknown, but it is thought to occur in the Piedmont, Southern Blue Ridge, and Cumberland Plateau of Alabama, Georgia, North Carolina, and Tennessee.

Nations: US

States/Provinces:  AL, GA, NC, TN




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G2G3Q

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: No Data Available

Concept Author(s): A.S. Weakley and K.D. Patterson

Author of Description: M. Pyne

Acknowledgements: No Data Available

Version Date: 03-29-01

  • ALNHP [Alabama Natural Heritage Program]. 2018. Unpublished data on file. Alabama Natural Heritage Program, Auburn University.
  • Dellinger, Bob. Personal communication. Ecologist. USDI National Park Service, Great Smoky Mountains National Park, Gatlinburg, TN.
  • NatureServe Ecology - Southeastern United States. No date. Unpublished data. NatureServe, Durham, NC.
  • 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.
  • Schotz, A., H. Summer, and R. White, Jr. 2008. Vascular plant inventory and ecological community classification for Little River Canyon National Preserve. NatureServe, Durham, NC. 244 pp.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
  • TDNH [Tennessee Division of Natural Heritage]. 2018. Unpublished data. Tennessee Division of Natural Heritage, Nashville, TN.