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A3192 Quercus virginiana - Sabal palmetto Coastal Evergreen Forest Alliance
Type Concept Sentence: This alliance includes communities which are dominated and characterized by Quercus virginiana, and often containing Sabal palmetto and Juniperus virginiana var. silicicola. It is found on barrier islands, maritime hammocks, and some more inland coastal hammocks and other fire-protected situations along the Atlantic and Gulf coasts from North Carolina to Florida and west to Mississippi.
Common (Translated Scientific) Name: Live Oak - Cabbage Palmetto Coastal Evergreen Forest Alliance
Colloquial Name: Southeastern Maritime Live Oak Forest
Hierarchy Level: Alliance
Type Concept: This alliance includes communities of barrier islands, maritime hammocks, and some more inland coastal hammocks and other fire-protected situations, which are dominated and characterized by Quercus virginiana, and often containing Sabal palmetto and Juniperus virginiana var. silicicola within their ranges. Habitats for associations in this alliance range from subxeric to moist. Vegetation of this alliance most typically lies just landward of maritime shrub zones; it ranges from warm-temperate to subtropical and often has a component of deciduous broad-leaved trees as well, particularly in the north. This community occurs over moist, sandy soils, on low areas of the mainland coast, and stands are protected from the most extreme maritime influences (i.e., salt spray) but are susceptible to high winds and flooding during hurricanes. Extending south from the vicinity of Cape Fear, North Carolina, the canopy is dominated by Quercus virginiana and Pinus taeda with some Sabal palmetto. Farther south, Pinus elliottii var. elliottii and Sabal palmetto become more prominent. In mid-Florida, tropical species begin to dominate the understory while temperate species retain canopy dominance. Vegetation of this alliance may be found on xeric to mesic sites, often occurring as linear strands behind frontal dunes. The seaward edge is generally found on the leeward side of dune complexes which provide shelter from excessive salt spray and overwash. This vegetation is also found on top of relict dune ridges and other areas with xeric to mesic hydrology. This alliance also includes upland palm savannas dominated by open to scattered canopy of Sabal palmetto. In some cases, these communities occupy narrow strips of upland adjacent to marsh. They have a dense shrubby understory and a high water table. Severe conditions, likely including periodic hurricane damage (by wind and flooding), preclude forest development. They occur in the ACE (Ashepoo-Combahee-Edisto) Basin and may be most common in the Sea Islands Section of the Coastal Plain. In southern Florida, vegetation of this alliance occurs on similar sites to Pinus elliottii var. densa communities but with more frequent fire (2- to 3-year return time) favoring the palm species Sabal palmetto and Serenoa repens.
Diagnostic Characteristics: Warm-temperate, maritime and inland forest of Quercus virginiana, and often containing Sabal palmetto and other trees and shrubs typical of the warm-temperate maritime forest.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Not sure how far south along the Florida coast this vegetation goes; it is mainly warm temperate vegetation, not tropical. Some of the text in Concept Summary may need to be edited. The southern Florida vegetation is described in old Alliance A.55.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: This is an evergreen broadleaf forest with a palm component. Some examples are affected by salt spray; these examples display more-or-less wind- and salt spray-sculpted vegetation. Some more protected examples have relatively closed and diverse canopies and well-developed shrub strata; vines are often conspicuous and abundant, but the herbaceous stratum is typically sparse and low in diversity.
Floristics: This alliance includes communities which are dominated and characterized by Quercus virginiana, and often containing Sabal palmetto and Juniperus virginiana var. silicicola within their ranges. Vegetation of this alliance most typically lies just landward of maritime shrub zones. More protected examples have relatively closed and diverse canopies and well-developed shrub strata; vines are often conspicuous and abundant, but the herbaceous stratum is typically sparse and low in diversity. Extending south from the vicinity of Cape Fear, North Carolina, the canopy is dominated by Quercus virginiana and Pinus taeda with some Sabal palmetto. Farther south, Pinus elliottii var. elliottii and Sabal palmetto become more prominent. In mid-Florida, tropical species begin to dominate the understory while temperate species retain canopy dominance. South of Martin County, Florida, tropical species such as Bursera simaruba, Sideroxylon foetidissimum, and Ficus aurea begin to dominate the forest canopy. The more tropically influenced examples may contain shrubs such as Eugenia axillaris, Myrsine cubana (= Myrsine floridana), and Coccoloba uvifera on the west coast of Florida, and Myrcianthes fragrans, Ardisia escallonoides, and Psychotria nervosa on the east coast.
The alliance also includes tropical/temperate maritime hammocks of the east coast of Florida, in mid-peninsula, characteristically with oak canopy and tropical subcanopy, as well as temperate maritime hammocks of the northeast and Panhandle coasts of Florida. Vegetation of this alliance may be found on xeric to mesic sites, often occurring as linear strands behind frontal dunes. The alliance also includes some dry hammocks, found from Florida to North Carolina. In these examples, Quercus virginiana is dominant, and sometimes Juniperus virginiana var. silicicola is present in the canopy. Frequently small Cladina - Cladonia-dominated openings are present. On small hammocks in salt marshes, Juniperus virginiana var. silicicola, Baccharis halimifolia, and Morella cerifera are characteristic. Another type of xeric hammock contains Serenoa repens under a Quercus virginiana canopy. On Amelia Island, Florida, Magnolia grandiflora is characteristically in the understory, increasing after cutting or with greater shell content in the soil. Some Mississippi vegetation included here is found on coastal sand ridges along inlets of marsh channels.
This alliance also includes upland palm savannas dominated by open to scattered canopy of Sabal palmetto. In southern Florida, vegetation of this alliance occurs on similar sites to Pinus elliottii var. densa communities but with more frequent fire (2- to 3-year return time) favoring the palm species Sabal palmetto and Serenoa repens.
The alliance also includes tropical/temperate maritime hammocks of the east coast of Florida, in mid-peninsula, characteristically with oak canopy and tropical subcanopy, as well as temperate maritime hammocks of the northeast and Panhandle coasts of Florida. Vegetation of this alliance may be found on xeric to mesic sites, often occurring as linear strands behind frontal dunes. The alliance also includes some dry hammocks, found from Florida to North Carolina. In these examples, Quercus virginiana is dominant, and sometimes Juniperus virginiana var. silicicola is present in the canopy. Frequently small Cladina - Cladonia-dominated openings are present. On small hammocks in salt marshes, Juniperus virginiana var. silicicola, Baccharis halimifolia, and Morella cerifera are characteristic. Another type of xeric hammock contains Serenoa repens under a Quercus virginiana canopy. On Amelia Island, Florida, Magnolia grandiflora is characteristically in the understory, increasing after cutting or with greater shell content in the soil. Some Mississippi vegetation included here is found on coastal sand ridges along inlets of marsh channels.
This alliance also includes upland palm savannas dominated by open to scattered canopy of Sabal palmetto. In southern Florida, vegetation of this alliance occurs on similar sites to Pinus elliottii var. densa communities but with more frequent fire (2- to 3-year return time) favoring the palm species Sabal palmetto and Serenoa repens.
Dynamics: These forests are prone to disturbance from high winds and storm surge during hurricanes, which can flood these areas, knock down and break trees and cause shifts in the coastal sands where these forests grow. The vegetation frequently exhibits effects of wind-pruning. Some examples are affected by salt spray; these examples display more-or-less wind- and salt spray-sculpted vegetation. Other upland examples are not affected by salt spray and correspondingly differ in composition and stature. Palm woodlands in southern Florida are subject to frequent fire (2- to 3-year return time) which favors the palm species Sabal palmetto and Serenoa repens instead of Pinus elliottii var. densa.
Environmental Description: This alliance includes communities of barrier islands, maritime hammocks, and some more inland coastal hammocks and other fire-protected situations. Habitats for associations in this alliance range from subxeric to moist. Vegetation of this alliance most typically lies just landward of maritime shrub zones. It ranges from warm-temperate to subtropical. Some examples are affected by salt spray; these examples display more-or-less wind- and salt spray-sculpted vegetation. Other upland examples are not affected by salt spray and correspondingly differ in composition and stature. Examples occur on sand flats, lower slopes, and on stabilized dunes that are protected from saltwater flooding but which experience light to moderate salt spray. Some more protected examples have relatively closed and diverse tree canopies. This community occurs over moist sandy soils, on low areas of the mainland coast, and stands are protected from the most extreme maritime influences (i.e., salt spray) but are susceptible to high winds and flooding during hurricanes. Vegetation of this alliance may be found on xeric to mesic sites, often occurring as linear strands behind frontal dunes. The seaward edge is generally found on the leeward side of dune complexes which provide shelter from excessive salt spray and overwash. This vegetation is also found on top of relict dune ridges and other areas with xeric to mesic hydrology. While relatively protected, the vegetation frequently exhibits effects of wind-pruning and salt spray. The alliance also includes some dry hammocks, found from Florida to North Carolina. Some Mississippi vegetation included here is found on coastal sand ridges along inlets of marsh channels.
Geographic Range: This alliance occurs along the Atlantic and Gulf coasts from North Carolina to Florida and west to Mississippi. This is warm-temperate vegetation.
Nations: US
States/Provinces: AL, FL, GA, LA, MS, NC, SC, TX?, VA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.899316
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
Concept Lineage: This new alliance has most of the associations from old alliance A.55, plus a few associations from A.479 and A.481. The southern Florida associations may need to go to G128, see text second half of Type Concept which is pasted from A.55.
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: >< Cabbage Palmetto: 74 (Eyre 1980)
= Maritime Forests (Edwards et al. 2013)
= Maritime Hammock (FNAI 2010a)
= Maritime Forests (Edwards et al. 2013)
= Maritime Hammock (FNAI 2010a)
- Edwards, L., J. Ambrose, and K. Kirkman. 2013. The natural communities of Georgia. University of Georgia Press, Athens, GA. 675 pp.
- Eyre, F. H., editor. 1980. Forest cover types of the United States and Canada. Society of American Foresters, Washington, DC. 148 pp.
- FNAI [Florida Natural Areas Inventory]. 2010a. Guide to the natural communities of Florida: 2010 edition. Florida Natural Areas Inventory, Tallahassee, FL. 228 pp. [https://fnai.org/naturalcommguide.cfm]
- Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
- Huck, R. B. 1987. Plant communities along an edaphic continuum in a central Florida watershed. Florida Scientist 50:111-128.
- Johnson, A. F., and M. G. Barbour. 1990. Dunes and maritime forests. Pages 429-480 in: R. L. Myers and J. J. Ewel, editors. Ecosystems of Florida. University of Central Florida Press, Orlando.
- Laessle, A. M. 1942. Plant communities of the Welaka area. University of Florida Biological Sciences Series No. 4. 143 pp.
- Sharitz, R. R. 1975. Forest communities of Kiawah Island. Pages F1-F39 in: W. M. Campbell, J. M. Dean, and W. D. Chamberlain, editors. Environmental inventory of Kiawah Island. Environmental Research Center, Inc., Columbia, SC.