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CEGL006122 Quercus alba - Acer rubrum - Carya ovata / Viburnum acerifolium / Waldsteinia fragarioides Clayplain Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: White Oak - Red Maple - Shagbark Hickory / Mapleleaf Viburnum / Appalachian Barren Strawberry Clayplain Forest

Colloquial Name: St Lawrence Valley Mesic Clayplain Forest

Hierarchy Level:  Association

Type Concept: This mesic, deciduous forest occurs on clay and silt plains of the Champlain Valley in Vermont and New York. Soils are deep and fertile, and soil moisture varies with texture and topographic position. In some areas, thin lenses of sand lie over the clay. The closed canopy is composed of Quercus alba, Quercus rubra, Acer rubrum, Carya ovata, Fraxinus americana, and Pinus strobus. Associated species can include Tsuga canadensis, Acer saccharum, Fagus grandifolia, Quercus bicolor, and Quercus macrocarpa. Tilia americana, Ostrya virginiana, and Carpinus caroliniana may also be locally present. The shrub layer is typically well-developed with Viburnum acerifolium, Hamamelis virginiana, Lindera benzoin, Rhus aromatica, and Rosa carolina. The herbaceous layer can be diverse and abundant. Characteristic species include Waldsteinia fragarioides and Moehringia lateriflora. Also common are Uvularia sessilifolia, Geranium maculatum, Brachyelytrum erectum, Circaea lutetiana, Carex gracillima, Carex laxiculmis, Carex rosea, Carex pensylvanica, Rubus pubescens, and Rubus hispidus. Slight changes in microtopography can produce changes in species composition. Wetter sites may have Quercus bicolor, Ulmus americana, Ilex verticillata, Viburnum recognitum, Carex lacustris, Carex tenera, Carex intumescens, Carex tribuloides, Carex baileyi, and Thelypteris palustris. Drier areas harbor Vaccinium angustifolium and Carex pensylvanica. Invasive, exotic shrubs can be problematic, including Lonicera morrowii, Lonicera tatarica, Berberis thunbergii, Rhamnus cathartica, and Frangula alnus.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Upon European settlement, much of this forest, especially the most well-drained areas, were cleared for agriculture. In Vermont, the remaining examples of Clayplain Forest are generally on moister sites, though they typically contain a mosaic of wet and less-wet areas.

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

Physiognomy and Structure: No Data Available

Floristics: The closed canopy is composed of Quercus alba, Quercus rubra, Acer rubrum, Carya ovata, Fraxinus americana, and Pinus strobus. Associated species can include Tsuga canadensis, Acer saccharum, Fagus grandifolia, Quercus bicolor, and Quercus macrocarpa. Tilia americana, Ostrya virginiana, and Carpinus caroliniana may also be locally present. The shrub layer is typically well-developed with Viburnum acerifolium, Hamamelis virginiana, Lindera benzoin, Rhus aromatica, and Rosa carolina. The herbaceous layer can be diverse and abundant. Characteristic species include Waldsteinia fragarioides and Moehringia lateriflora (= Arenaria lateriflora). Also common are Uvularia sessilifolia, Geranium maculatum, Brachyelytrum erectum, Circaea lutetiana, Carex gracillima, Carex laxiculmis, Carex rosea, Carex pensylvanica, Rubus pubescens, and Rubus hispidus. Slight changes in microtopography can produce changes in species composition. Wetter sites may have Quercus bicolor, Ulmus americana, Ilex verticillata, Viburnum recognitum, Carex lacustris, Carex tenera, Carex intumescens, Carex tribuloides, Carex baileyi, and Thelypteris palustris. Drier areas harbor Vaccinium angustifolium and Carex pensylvanica. Invasive, exotic shrubs can be problematic, including Lonicera morrowii, Lonicera tatarica, Berberis thunbergii, Rhamnus cathartica, and Frangula alnus (= Rhamnus frangula).

Dynamics:  Pinus strobus, Fraxinus pennsylvanica, and Populus tremuloides may be prevalent or dominate early successional areas.

Environmental Description:  Soils are deep, fertile, glaciolacustrine silts and clays. Soil moisture varies with soil texture and topographic position. In some areas, thin lenses of sand lie over the clay.

Geographic Range: Currently described from the Lake Champlain Valley in Vermont and New York.

Nations: CA?,US

States/Provinces:  NY, ON?, VT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Mesic Clayplain Forest (Thompson and Sorenson 2000)

Concept Author(s): E.H. Thompson and E.R. Sorenson (2000)

Author of Description: S. Neid and E. Sorenson

Acknowledgements: No Data Available

Version Date: 01-28-04

  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero, editors. 2014a. Ecological communities of New York state. Second edition. A revised and expanded edition of Carol Reschke''s ecological communities of New York state. New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY.
  • Lapin, M. 1988. Champlain Valley clayplain forests of Vermont: Some sites of ecological importance. Unpublished document. Nongame and Natural Heritage Program, Vermont Fish and Wildlife Department, Agency of Natural Resources, Waterbury, VT.
  • Thompson, E. H., and E. R. Sorenson. 2000. Wetland, woodland, wildland: A guide to the natural communities of Vermont. The Nature Conservancy and the Vermont Department of Fish and Wildlife. University Press of New England, Hanover, NH. 456 pp.
  • Thompson, E. H., and E. R. Sorenson. 2005. Wetland, woodland, wildland: A guide to the natural communities of Vermont. The Nature Conservancy and the Vermont Department of Fish and Wildlife. University Press of New England, Hanover, NH. 456 pp.