Vegetation Classification and Mapping Project Report - USGS

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USGS-NPS Vegetation Mapping Program Colonial National Historical Park COMMON NAME (PARK-SPECIFIC): SUCCESSIONAL SWEETGUM FOREST SYNONYMS USNVC English Name: Sweetgum Forest USNVC Scientific Name: Liquidambar styraciflua Forest USNVC Identifier: CEGL007216 LOCAL INFORMATION Environmental Description: Successional Sweetgum Forest is an upland forest resulting from succession following human activities such as logging and clearing. Vegetation Description: Stands are dominated by young, often shrubby Liquidambar styraciflua (sweetgum) often to the exclusion of other species. Pinus taeda (loblolly pine) may be a minor associate. Weedy or successional species make up the herb layer, Lespedeza sp. (a lespedeza). Successional Sweetgum Forest may range in physiognomy from short and shrubby to open, short-statured woodland. Most Abundant Species: Stratum Lifeform Species Tree canopy Broad-leaved deciduous tree Liquidambar styraciflua (sweetgum) Characteristic Species: Liquidambar styraciflua (sweetgum). Other Noteworthy Species: Information not available. Subnational Distribution with Crosswalk Data: State SRank Rel Conf SName Reference VA SNA . . [not crosswalked] . Local Range: This association is mapped at Green Spring, where is occurs as three polygons covering 2.9 hectares (7.1 acres). Classification Comments: This forest is distinguished by being dominated by young, dense, shrubby Liquidambar styraciflua (sweetgum) occurring in association with Cultural Meadow. Other Comments: Information not available. Local Description Authors: K. D. Patterson. Plots: None. Colonial National Historical Park Inventory Notes: Information not available. GLOBAL INFORMATION USNVC CLASSIFICATION Physiognomic Class Forest (I) Physiognomic Subclass Deciduous forest (I.B.) Physiognomic Group Cold-deciduous forest (I.B.2.) Physiognomic Subgroup Natural/Semi-natural cold-deciduous forest (I.B.2.N.) Formation Lowland or submontane cold-deciduous forest (I.B.2.N.a.) Alliance Liquidambar styraciflua Forest Alliance (A.234) Alliance (English name) Sweetgum Forest Alliance Association Liquidambar styraciflua Forest Association (English name) Sweetgum Forest Ecological System(s): Information not available. 206
USGS-NPS Vegetation Mapping Program Colonial National Historical Park GLOBAL DESCRIPTION Concept Summary: This early-successional upland forest of the southeastern U.S. occurs on a variety of environmental settings, resulting from succession following human activities such as logging and clearing or agriculture. Stands are dominated by Liquidambar styraciflua (sweetgum), sometimes to the exclusion of other species. Pinus taeda (loblolly pine) is a common associate. Other associated species are highly variable and depend on location and stand history. Environmental Description: This association is found in uplands that have been heavily impacted by agriculture or other severe disturbances and are recovering. Vegetation Description: Stands are dominated by Liquidambar styraciflua (sweetgum), sometimes to the exclusion of other species. Most Abundant Species: Stratum Lifeform Species Tree canopy Broad-leaved deciduous tree Liquidambar styraciflua (sweetgum) Shrub/sapling (tall & short) Broad-leaved deciduous tree Liquidambar styraciflua (sweetgum) Characteristic Species: Information not available. Other Noteworthy Species: Information not available. USFWS Wetland System: Not applicable. DISTRIBUTION Range: This association may be found throughout the southeastern United States, in the coastal plains and interior ecoregions. It is also attributed to New Jersey with the merger of CEGL006927. The status in intervening states (e.g., Delaware, Maryland) needs to be assessed. States/Provinces: AL, AR?, DE, GA, KY, LA, MD, MS, NC, NJ, OK, SC, TN, VA. Federal Lands: NPS (Big South Fork, Chickamauga-Chattanooga?, Colonial, Cowpens, George Washington Birthplace, Guilford Courthouse, Kings Mountain, Mammoth Cave, Natchez Trace, Ninety Six, Petersburg, Shiloh, Thomas Stone, Vicksburg); USFS (Cherokee?, Oconee?, St. Francis?); USFWS (Prime Hook). CONSERVATION STATUS Rank: GNA (modified/managed) (19-Aug-2002). Reasons: This is an upland successional vegetation type composed of native species. Its conservation value is limited, but it may provide buffer for communities of greater conservation value. CLASSIFICATION INFORMATION Status: Standard. Confidence: 3 - Weak. Comments: Information not available. Similar Associations: • Liquidambar styraciflua - Liriodendron tulipifera / Lindera benzoin / Arisaema triphyllum Forest (CEGL004418)--a later-successional bottomland association. • Liquidambar styraciflua - Quercus (alba, falcata) Forest (CEGL007217)--of interior provinces. • Liquidambar styraciflua - Quercus (nigra, phellos) - Pinus taeda / Vaccinium elliottii - Morella cerifera Forest (CEGL007726)--a more diverse successional forest of the Coastal Plain. Related Concepts: • sweet gum successional forest (Collins and Anderson 1994) = 207
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