Login | Datasets | Logout
Jump to... Home PLOT search PLANT search COMMUNITY search Simple search Manage datasets Tutorial About FAQ ------- Site map VegBranch Data dictionary ERD

stdcommconcept4733847338

View Community Concepts - Detail

(Juniperus virginiana) / Sporobolus vaginiflorus - Panicum flexile - Allium cernuum - Minuartia patula Grassland | NatureServe Biotics 2019
click to update datacart
Name: (Juniperus virginiana) / Sporobolus vaginiflorus - Panicum flexile - Allium cernuum - Minuartia patula Grassland Reference: NatureServe Biotics 2019 Description: This vegetation is essentially herbaceous but can have scattered shrubs of <i>Juniperus virginiana</i> within open patches and forming denser thickets around the edges. The vegetation is characterized by a mixture of annual grasses and low annual and perennial forbs. The most constant and characteristic species are <i>Allium cernuum, Cuphea viscosissima, Dichanthelium acuminatum, Euphorbia dentata, Trichostema brachiatum, Minuartia patula, Packera anonyma, Panicum flexile, Sedum pulchellum</i>, and <i>Sporobolus vaginiflorus var. vaginiflorus</i>. This community type is developed on gently sloping to flat exposed outcrops of Lincolnshire Limestone, which reaches a maximal thickness of 85 m (280 feet) near Lexington; based on moderately high magnesium levels in soils over the outcrops, the limestone may be dolomitic. These habitats represent discrete openings in subxeric, calcareous forests and woodlands of <i>Juniperus virginiana</i>. Some of the bedrock openings are approximately one half (0.5) acre in size, but most are considerably smaller. Surface substrate consists of about 50% exposed bedrock, cobbles, and gravel, and 50% thin organic matter or exposed mineral soil. The latter is poorly developed, consisting of thin localized mats of yellow-brown or reddish-brown silty clay loam from &lt;4 cm to &gt;6 cm deep over bedrock. Samples collected from plots had consistently high pH (mean = 7.7), calcium (mean = 3650 ppm), magnesium (mean = 175 ppm), and 100% base saturation. Mean slope inclination is about 5°. Abundant ephemeral seepage occurs over parts of the outcrops during wet periods, but the habitat is very drought-prone and xeric overall.  Accession Code: urn:lsid:vegbank.org:commConcept:35388-{E8C89E4C-B995-429D-977C-183F245A4901} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 16-Apr-2015 to: ongoing
	status: accepted Community's Parent: Sporobolus neglectus - Sporobolus vaginiflorus Alkaline Bedrock Annual Grassland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.946476 NatureServe Explorer   Code: CEGL007073   Translated: (Eastern Red-cedar) / Poverty Dropseed - Wiry Panicgrass - Nodding Onion - Pitcher's Stitchwort Grassland   Common: Virginia Ridge and Valley Limestone Annual Flatrock Barrens   Scientific: (Juniperus virginiana) / Sporobolus vaginiflorus - Panicum flexile - Allium cernuum - Minuartia patula Grassland