Habitats of North Carolina
Habitat Group:
Habitat Type:
Members of Conifer Forests:
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Conifer Forests
Montane Dry-Xeric Pine Forests and Woodlands
General Description This habitat consists of the dry ridges and rock outcrops that support stands of xerophytic, mountain pines.

Both Table Mountain Pine and Pitch Pine are restricted to this habitat and are included as Determining Species. Also included are herbivorous insects that appear to be stenophagous on Pines and are restricted to dry, montane habitats.

Abiotic Factors
Biotic Structure
Co-evolved Species Groups Phagic and Competitory Symbioses:
Pinus rigida // Scaphytopius angustatus
Pinus pungens // Dioryctria yatesi

Determining Species
Taxa Global RankState RankProbability of Extirpation (PE)
Dioryctria yatesi - Mountain Pineconeworm Moth GNRS2S30.0164
Pinus pungens - Table Mountain Pine G4S40.0007
Pinus rigida - Pitch Pine G5S40.0007
Scaphytopius angustatus
Expected Number of Extirpations with a PE value (Sum of PE) = 0.0178
N = Number of Extant Species with a PE value = 3
Average PE = ENE/N = 0.0059
Number of S5 species = 0
Proportion of Secure Species = Number of S5 Species/N = 0.0000
Habitat Risk Index = ENE x (1 – PSS) = 0.0178

Estimated Risk to the Determining Species
Estimated Security of the Habitat
Index of Habitat Imperilment
Identified Risks
Observed Trends
Distribution Map
Major Conservation Reserves
Priority Areas for Surveys and Conservation Protection
Stewardship and Management Recommendations
Updated on 2022-01-01 00:56:40