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Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Depression Forest | Southeastern Ecology Working Gro...
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Name: Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Depression Forest Reference: Southeastern Ecology Working Gro... Description: This community occupies shallow depressions on Vertisols that exhibit strong gilgai microtopography. The soils formed over Holocene alluvium and are located in the present-day drainage basins of Caney Creek and the Colorado, San Bernard, and Brazos rivers in the Outer Coastal Plain of Texas. It also occurs as a fringe around larger depressions in the same area. The dominant overstory species is Fraxinus pennsylvanica which forms a slightly open canopy; Carya aquatica is usually present and may codominate the overstory in some occurrences. The sparse to locally dense understory provides an open aspect, with understory dominants including Sabal minor, Forestiera acuminata and Cephalanthus occidentalis. Ground cover vegetation may be banded along moisture and microtopographic contours; it is generally dense and continuous, but the deepest parts can be devoid of vegetation during dry seasons, exposing bare, cracked, fine-textured soil. It depends on seasonal inundation due to local rainfall events to maintain moist habitat conditions. Phanopyrum gymnocarpon is the visual dominant of the ground cover. Other ground cover components include Hygrophila lacustris, Carex lupuliformis, Carex crus-corvi, Echinodorus cordifolius, Berchemia scandens, Polygonum virginianum, Rhynchospora corniculata, Saururus cernuus, and Mikania scandens. It is a conspicuous part of forest vegetation in the Columbia Bottomlands area of Brazoria, Fort Bend and Wharton counties, Texas, where it occurs intermixed with Quercus virginiana / Ilex vomitoria - Sabal minor / Carex cherokeensis - Malvaviscus arboreus var. drummondii Forest (CEGL007830) and Ulmus crassifolia - Carya illinoinensis - Celtis laevigata / Chasmanthium sessiliflorum - Carex cherokeensis Forest (CEGL002388).  Accession Code: VB.CC.25658.FRAXINUSPENNSYL Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 08-Nov-1999 to: 17-Nov-2014
	status: accepted Community's Parent: Acer rubrum - Fraxinus pennsylvanica Seasonally Flooded Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Green Ash - (Water Hickory) / Swamp Privet / Savanna Panicgrass Depression Forest   UID: ELEMENT_GLOBAL.2.689129 NatureServe Explorer   Code: CEGL007926   Scientific: Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Depression Forest   Common: Columbia Bottomlands Ash Flat (convergence) and Synonyms: (undetermined) Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Depression Forest