Habitats of North Carolina
Habitat Group:
Habitat Type:
   
Members of Rock Outcrops, Glades, and Barrens:
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Rock Outcrops, Glades, and Barrens
Flatrocks
Habitat Overview Flat,surface exposures primarily of granite and other felsic plutons that accumulate small to extensive deposits of soil, sufficient to support mats of xerophytic mosses, graminoids, and other dwarf plant species. This habitat includes species that are restricted to the Piedmont as well as some that occur at in the Mountains.

Species that occur in the Piedmont that are restricted to circumneutral to basic rock formations are treated in the Basic Barrens and Glades habitat. Species restricted to the Mountains are treated in several other habitats found primarily or exclusively in that region.


Related NHP Natural Communities
Determining Species
Taxa Global RankState RankProbability of Extirpation (PE)
GRAMINOIDS
Cyperus granitophilus - Granite Flatsedge G3G4S20.0460
Cyperus squarrosus - Bearded Flatsedge G5S20.0460
FORBS
Diamorpha smallii - Elf Orpine G4S30.0058
Mononeuria glabra - Appalachian Sandwort G4S30.0058
Mononeuria uniflora - One-flower Sandwort G4S10.3584
Phemeranthus teretifolius - Quill Fameflower G4S30.0058
Portulaca smallii - Small's Purslane G3S20.0460
Sedum pusillum - Granite Stonecrop G3S10.3584
QUILLWORTS
Isoetes piedmontana - Piedmont Quillwort G4S20.0460
Expected Number of Extirpations with a PE value (Sum of PE) = 0.9182
Number of Extant Species with a PE value (N) = 9
Average PE = ENE/N = 0.1020
Number of S5 species = 0
Proportion of Secure Species = Number of S5 Species/N = 0.0000
Habitat Risk Index = ENE x (1 – PSS) = 0.9182

Candidates for Inclusion
Habitat Sub-sets
Distribution Map
Distribution
Survey Coverage Map
Survey Coverage
Survey Priorities
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 2019-11-17 18:54:45