Habitats of North Carolina
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Members of Rock Outcrops, Glades, and Barrens:
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Rock Outcrops, Glades, and Barrens
General Dry-Xeric Glades and Barrens
Habitat Overview This habitat consists of open areas associated with either sandy soils or thin, soils weathered from rock layers located close to the surface. Soil chemistry is not a critical factor, with examples found on both circumneutral to acidic substrates.

Determining plant species are primarily xerophytic herbs, graminoids, or shrubs. All are both drought and fire-resistant. Most of the determining animals are herbivores that are specialized on the plant species characteristic of these habitats. The one lizard included in this habitat is predator that needs open areas to spot its prey and/or its enemies and that allows it to use its great running speed both for pursuit and escape. All of these species are found in two or more of the state's physiographic provinces.

Related NHP Natural Communities
Determining Species
Taxa Global RankState RankProbability of Extirpation (PE)
FORBS
Agave virginica - Eastern False-aloe G5S30.0058
Asclepias verticillata - Whorled Milkweed G5S50.000000000
Commelina erecta - Slender Dayflower G5S50.000000000
Croton willdenowii - Elliptical Rushfoil G5S30.0058
Cunila origanoides - American Dittany G5S50.000000000
Desmodium sessilifolium - Sessileleaf Tick-trefoil G5SH
Duravia species 2 - Pleatleaf Knotweed G5S20.0460
Houstonia longifolia - Longleaf Bluet G5S30.0058
Ionactis linariifolia - Stiff Aster G5S50.000000000
Liatris squarrosa - Scaly Blazing-star G5S40.0007
Phlox nivalis - Trailing Phlox G4G5S40.0007
Solidago odora - Sweet Goldenrod G5S50.000000000
Stylosanthes biflora - Sidebeak Pencil-flower G5S50.000000000
Tephrosia virginiana - Goat's-rue G5S50.000000000
Viola pedata - Bird's-foot Violet G5S40.0007
Yucca filamentosa - Common Yucca G5S4S50.0002
Yucca flaccida - Weakleaf Yucca G5S10.3584
LIZARDS
Aspidoscelis sexlineata - Six-lined Racerunner G5S50.000000000
MOTHS
Bleptina inferior GNRS4S50.0002
Bleptina sangamonia GUS1S20.1284
Digrammia eremiata - Three-lined Angle G4S3S40.0020
Hemeroplanis scopulepes - Variable Tropic Moth G5S3S40.0020
Lobocleta peralbata GNRS2S30.0164
Ponometia semiflava - Half-yellow Moth G4S4S5
Prodoxus decipiens - Bogus Yucca Moth G4S3S40.0020
Ptichodis bistrigata - Southern Ptichodis Moth G3S3S4
Tegeticula yuccasella - Yucca Moth G4S1S30.0460
SHRUBS
Comptonia peregrina - Sweet-fern G5S30.0058
Hypericum virgatum - Sharpleaf St. John's-wort G4S40.0007
GRAMINOIDS
Gymnopogon ambiguus - Bearded Skeleton-grass G5S50.000000000
Sporobolus vaginiflorus - Poverty Dropseed G5S30.0058
BUTTERFLIES
Megathymus cofaqui - Cofaqui Giant-Skipper G3G4S10.3584
Megathymus yuccae - Yucca Giant-Skipper G5S3S40.0020
Expected Number of Extirpations with a PE value (Sum of PE) = 0.9938
N = Number of Extant Species with a PE value = 21
Average PE = ENE/N = 0.0473
Number of S5 species = 9
Proportion of Secure Species = Number of S5 Species/N = 0.4286
Habitat Risk Index = ENE x (1 – PSS) = 0.5679

Phagic and Competitory Symbioses: (Comptonia peregrina/Aroga argutiola) // (Tephrosia virginiana/Digrammia eremiata) // (Yucca species/Megathymus cofaqui-Megathymus yuccae-Prodoxus decipiens-Tegeticula yuccasella)



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Habitat Sub-sets
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Distribution
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Survey Coverage
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Average Imperilment of Habitat Members
Habitat Conservation Status
High Quality Habitat Occurrence Table
High Quality Habitat Occurrences
Protected Habitat Occurrences
Threats and Trends
Status Summary
Stewardship Recommendations
References
Updated on 2021-03-27 22:51:21