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CEGL005018 Quercus falcata - Quercus alba - Quercus stellata - Quercus velutina Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Southern Red Oak - White Oak - Post Oak - Black Oak Forest

Colloquial Name: Southern Red Oak - Mixed Oak Forest

Hierarchy Level:  Association

Type Concept: This dry-mesic southern red oak - mixed oak forest type is found in the central United States in the unglaciated Interior Low Plateau. Stands occur on the upper slopes and ridgetops of moderately to maturely dissected hills, where they occupy narrow bands of dry-mesic habitat transitional between lower and midslope mesic communities and xeric ridgetops. Soils are most often a well-drained sandy loam, although clay loams are not uncommon. Bedrock is predominantly Paleozoic sandstone of Pennsylvanian age and is often exposed; the association may also occur on siltstone, shale, or coal, or over Mississippian limestones, especially in the southern part of its range. Karst topography can be found in areas where this community occurs. The vegetation is dominated by a closed-tree canopy. Quercus alba, Quercus coccinea, Quercus falcata, Quercus stellata, and Quercus velutina are among the oaks which dominate this dry-mesic forest. Quercus falcata reaches the northern extent of its range within this community. Other tree species include Carya ovata, Carya glabra, and Carya tomentosa. The density and diversity of subcanopy, shrub, and herbaceous species are substantially less than are found in mesic forests due to limited moisture availability during most of the growing season. Typical shrubs and small trees include Cornus florida and Sassafras albidum. Common herbaceous species include Sanicula canadensis, Desmodium nudiflorum, Desmodium nuttallii, Symphyotrichum urophyllum, Symphyotrichum patens, Solidago ulmifolia, and Podophyllum peltatum.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: More information is needed to distinguish this association from those recognized in the Southeast, such as ~Quercus falcata - Quercus alba - Carya tomentosa / Oxydendrum arboreum / Vaccinium stamineum Forest (CEGL007244)$$ and ~Quercus falcata - Quercus (coccinea, stellata) / Vaccinium (pallidum, stamineum) Forest (CEGL007247)$$. The type does not appear to occur in the Ozark region, and in Arkansas, Quercus falcata is more common in the coastal plain. Selective removal of oaks for sawtimber can cause shifts in tree species dominance, thereby creating classification difficulties. Quercus falcata is a key dominant distinguishing this oak type from others. Braun (1950, p. 154-158) noted the prominence of Quercus falcata and Quercus alba on the low hills of the Mississippi Embayment Section of her Western Mesophytic Forest Region as well as in the Mississippian Plateau (TNC 1995a).

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

Physiognomy and Structure: Physiognomic variation among and within this community is affected by topographic position (from ravine to ridge). Tall shrubs are 0.5-5 m tall.

Floristics: The vegetation is dominated by a closed-tree canopy. Quercus alba, Quercus coccinea, Quercus falcata, Quercus stellata, and Quercus velutina are among the oaks which dominate this dry-mesic forest. Quercus falcata reaches the northern extent of its range within this community. Other tree species include Carya ovata, Carya glabra, and Carya tomentosa (= Carya alba). The density and diversity of subcanopy, shrub, and herbaceous species are substantially less than are found in mesic forests due to limited moisture availability during most of the growing season. Typical shrubs and small trees include Cornus florida and Sassafras albidum. Common herbaceous species include Sanicula canadensis, Desmodium nudiflorum, Desmodium nuttallii, Symphyotrichum urophyllum (= Aster sagittifolius), Symphyotrichum patens (= Aster patens), Solidago ulmifolia, and Podophyllum peltatum.

White oak may comprise nearly 50% of the composition of midslope forest communities, while black oak contributes more significantly in upper slope forests, particularly where canopy closure is less than 100%. Small patches of almost pure black oak are occasionally found within the forest. Vegetative dominance on low slopes includes species which prefer transitional zones between dry-mesic and mesic conditions and include Quercus alba and Quercus rubra. Species which select sites transitional from midslope to ridgetop where soils become dry include Quercus velutina, Quercus stellata, and Quercus marilandica.

Dynamics:  Historically, fire may have periodically affected this community, increasing its range into more moist sites (Fralish et al. 1991, Robertson and Heikens 1994). Fires in the Shawnee and Ozark Hills just north of the range of this type were more frequent (almost annual) from the early 1900s to 1930, but there is little information on presettlement (prior to 1800) fire frequency (Robertson and Heikens 1994). Erosion also converts mesic forest soils to dry-mesic, creating conditions which may favor the occurrence of this community.

This community is a climax community where dry-mesic conditions dominate on mid to upper slopes of eastern oak - hickory associations. Logging and fire select for the occurrence of this community on more moist sites. Erosion can also affect soil water-holding capacity, converting mesic soils to dry-mesic, which creates conditions favoring the occurrence of this forest. Drier conditions and canopy openings increase the occurrence of black oak, while more moist conditions favor white oak. Variation in annual rainfall can affect this community. Periods of drought may decrease herbaceous diversity and increase tree senescence.

Environmental Description:  Stands occur on the upper slopes and ridgetops of moderately to maturely dissected hills, where they occupy narrow bands of dry-mesic habitat transitional between lower and midslope mesic communities and xeric ridgetops. Soils are most often well-drained sandy loam, although clay loams are not uncommon. Bedrock is predominantly Paleozoic sandstone of Pennsylvanian age and is often exposed; the association may also occur on siltstone, shale, or coal, or over Mississippian limestones, especially in the southern part of its range (Kentucky). Karst topography can be found in areas where this community occurs. This community coincides with the northernmost extension of the range for southern red oak. Its distribution is patchy, occurring on south- to west-facing slopes where increased temperatures favor Quercus falcata over Quercus rubra.

This community typically occurs on well-drained sandy loam soils that are often, although not always, shallow. Exposed bedrock is commonly encountered in this community and is especially prominent on upper slopes near sandstone escarpments. Soil characteristics were determined from county soil maps, field data, and soil cores. Root penetration is often limited by bedrock. Listed soil types are broad categories within which a very diverse assortment of individual soils occur. Variation in annual rainfall can affect this community. Periods of drought may decrease herbaceous diversity and increase tree senescence.

Bedrock is Paleozoic sandstone, siltstone, shale, and coal, with occasional outcrops of Mississippian limestone. The Interior Low Plateau is a series of cuestas with prominent escarpments where elevations seldom exceed 305 m (1000 feet). Pennsylvanian sandstone is the most frequently occurring bedrock and is often underlain by limestone. Dissolution of limestone near the surface and subsequent sinks are responsible for karst topography which is prevalent throughout the Interior Low Plateau forests. The Appalachian Plateau (particularly the unglaciated section) is bounded on all sides by outfacing escarpments. Elevations are highest in this section, reaching 1220 m (4000 feet), but averaging 365-400 m (1200-1300 feet). Limestones are uncommon here, so karst topography is uncommon. Valleys display a well-developed dendritic drainage.

Geographic Range: This dry-mesic southern red oak - mixed oak forest type is found in the central United States in the unglaciated parts of the Interior Low Plateau region of Illinois, Indiana, and Kentucky.

Nations: US

States/Provinces:  IL, IN?, KY, TN




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G3G5

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Quercus falcata - Quercus alba - Quercus stellata - Quercus velutina Forest (TNC 1995a)
= Quercus falcata - Quercus alba - Quercus stellata - Quercus velutina Forest (Faber-Langendoen 2001)
< Eastern Broadleaf Forests: 100: Oak-Hickory Forest (Quercus-Carya) (Küchler 1964)
< Western Mesophytic Forest (Braun 1950) [Western Mesophytic Forest relies on moisture availability and geographic region to define a community. A broad range of species occur in this community.]

Concept Author(s): D. Faber-Langendoen (2001)

Author of Description: M. Guetersloh and M. Pyne

Acknowledgements: No Data Available

Version Date: 01-01-98

  • Behler, J. L. 1988. Familiar reptiles and amphibians. Alfred A. Knopf, New York. 191 pp.
  • Braun, E. L. 1950. Deciduous forests of eastern North America. Hafner Press, New York. 596 pp.
  • Bull, J., and J. Farrand, Jr. 1977. The Audubon Society field guide to North American birds: Eastern region. Alfred A. Knopf, New York. 784 pp.
  • Clark, B. F., and J. G. Hutchinson, editors. 1994. Central hardwood notes. USDA Forest Service: Northeastern Area State and Private Forestry, Northeastern Forest Experiment Station, Southern Forest Experiment Station.
  • Craighead, F. C. 1949. Insect enemies of eastern forests. USDA Miscellaneous Publication No. 657, United States Printing Office, Washington, DC. 679 pp.
  • Duncan, W. H., and M. B. Duncan. 1988. Trees of the southeastern United States. The University of Georgia Press. 322 pp.
  • Evans, M., B. Yahn, and M. Hines. 2009. Natural communities of Kentucky 2009. Kentucky Nature Preserves Commission, Frankfort, KY. 22 pp.
  • Eyre, F. H., editor. 1980. Forest cover types of the United States and Canada. Society of American Foresters, Washington, DC. 148 pp.
  • Faber-Langendoen, D., editor. 2001. Plant communities of the Midwest: Classification in an ecological context. Association for Biodiversity Information, Arlington, VA. 61 pp. plus appendix (705 pp.).
  • Fenneman, N. M. 1928. Physiographic divisions of the United States. Association of American Geographer Annals 18:261-253.
  • Fralish, J. S., F. B. Crooks, J. L. Chambers, and F. M. Harty. 1991. Comparison of presettlement, second-growth and old-growth forest on six site types in the Illinois Shawnee Hills. The American Midland Naturalist 125:294-309.
  • Homoya, M. A., J. Aldrich, J. Bacone, L. Casebere, and T. Post. 1988. Indiana natural community classification. Indiana Natural Heritage Program, Indianapolis, IN. Unpublished manuscript.
  • Illinois Nature Preserve Commission. 1973. Comprehensive plan for the Illinois nature preserves system, part 2: The natural divisions of Illinois, J. E. Schwegman, principal author. 32 pp.
  • Küchler, A. W. 1964. Potential natural vegetation of the conterminous United States. American Geographic Society Special Publication 36. New York, NY. 116 pp.
  • Little, E. L. 1980a. The Audubon Society field guide to North American trees: Eastern region. Alfred A. Knopf, New York. 714 pp.
  • Midwestern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Minneapolis, MN.
  • Mohlenbrock, R. H. 1986. Guide to the vascular flora of Illinois. Southern Illinois University Press, Carbondale. 507 pp.
  • Nelson, P. W. 1985. The terrestrial natural communities of Missouri. Missouri Natural Areas Committee, Jefferson City. 197 pp. Revised edition, 1987.
  • Niering, W. A. 1979. The Audubon Society field guide to North American wildflowers: Eastern region. Alfred A. Knopf, New York. 887 pp.
  • Pyne, M., E. Lunsford Jones, and R. White. 2010. Vascular plant inventory and plant community classification for Mammoth Cave National Park. NatureServe, Durham, NC. 334 pp.
  • Robertson, P. A., and A. L. Heikens. 1994. Fire frequency in oak-hickory forests of southern Illinois. Castanea 59(3):286-291.
  • Schwartz, C. W., and E. R. Schwartz. 1959. The wild mammals of Missouri. University of Missouri Press and Missouri Conservation Commission. 341 pp.
  • TDNH [Tennessee Division of Natural Heritage]. 2018. Unpublished data. Tennessee Division of Natural Heritage, Nashville, TN.
  • TNC [The Nature Conservancy]. 1995a. A classification and description of plant communities in southern Illinois. Report by the Southern Illinois Field Office, Ullin, IL, and the Midwest Regional Office, Minneapolis, MN.
  • Thornbury, W. D. 1965. Regional geomorphology of the United States. John Wiley and Sons, Inc., New York. 609 pp.
  • Voigt, J. W., and R. H. Mohlenbrock. 1964. Plant communities of southern Illinois. Southern Illinois University Press, Carbondale. 202 pp.
  • White, J., and M. Madany. 1978. Classification of natural communities in Illinois. Pages 311-405 in: Natural Areas Inventory technical report: Volume I, survey methods and results. Illinois Natural Areas Inventory, Urbana, IL.