Habitats of North Carolina
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General Shrublands
Montane Rhododendron Thickets and Balds
No image for this habitat.
General Description Dense and extensive thickets composed of Rhododendrons are conspicuous features of acidic coves in the mountains, where they are commonly referred to as "Rhododendron Hells". Rhododendrons also grow out in the open on high elevation heath balds.

This habitat is associated with montane climates. A few species, such as Rhododendron maximum and R. catawbiense, that occur in the Piedmont are included in the Cool Mesic Forests habitat although they are also major components of Rhododendron thickets in the Mountains.


Abiotic Factors
Biotic Structure
Co-evolved Species Groups Phagic and Competitory Symbioses
Rhododendron species // Graphocephala fennahi-Lyonetia latistrigella-Synanthedon rhododendri

Determining Species
sciNamecomNameg_ranks_rankmod_s_rankprob_of_extirpation
BIRDS
Cardellina canadensisCanada WarblerG5S4S40.00041
HEMIPTERAN HOPPERS
Graphocephala fennahiRhododendron LeafhopperSNR
MAMMALS
Sylvilagus obscurusAppalachian CottontailG4S3S30.00407
MOTHS
Caloptilia porphyretica
Lyonetia latistrigellaRhododendron Leaf MinerGNRSUS2S30.01230
Synanthedon rhododendriRhododendron Borer MothGNRSUSU0.00202
SHRUBS
Rhododendron cumberlandenseCumberland AzaleaG4S1S10.33330
Rhododendron carolinianumCarolina AzaleaG4S3S30.00407
Rhododendron vaseyi Pink-shell AzaleaG3S3S30.00407
Rhododendron minusCarolina RhododendronG4S4S40.00041
Rhododendron pilosumMinniebushG4G5S4S40.00041
Nr = Number of Ranked Species = 9
Ner = Number of Extant, Ranked Species = 9
Nv = Number of Historic and Extirpated Species = 0
Nar = Number of Species at Risk of Extirpation (State rank > S5) = 9
Nss = Number of Secure Species (State Rank = S5) = 0
Pss = Proportion of Secure Species (Nss/Ner) = 0.00000
ENE = Expected Number of Extirpations (Sum of PE) = 0.36106
Average PE (ENE/Ner) = 0.04012
Habitat Risk Index = (Nar+Nv) x Average PE = 9 x 0.04012 = 0.36108

Estimated Risk to the Determining Species
Estimated Risk to the Co-evolved Species Groups
Estimated Security of the Habitat
Index of Habitat Imperilment
Identified Risks
Observed Trends
Distribution Map
Distribution
Major Conservation Reserves
Priority Areas for Surveys and Conservation Protection
Stewardship and Management Recommendations
References
Updated on 2022-03-27 14:18:34