Habitats of North Carolina
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Members of General Shrublands:
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General Shrublands
General Dogwood Thickets and Understories
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General Description The diagnostic feature of this habitat is the presence of Dogwood species. Over the combined range of species in this genus, vegetation types range from dry-mesic upland forests as well as open, shoreline shrublands. Rich soils are preferred by the majority of species but Cornus florida also grows on nutrient-poor soils in the Sandhills.

None of the species of Cornus themselves are found throughout the range of this habitat and are not treated as Determining Species of this particular habitat. The Determining Species instead are stenophagous herbivores that feed on a wide range of Cornus species, occurring across the full range of dogwood-containing habitats.

Abiotic Factors Geographic Regions: Lower Coastal Plain to High Mountains. USDA Hardiness Zones: 6-8. Landform: ridges, slopes, bottomlands, and wet flats. Slope Aspect: occurs on all slopes aspects as well as on ridges and flats. Soil Moisture: Dry to hydric. Soil texture: sandy to loamy to alluvial. Soil pH: mostly circumneutral but acidic in the case of sandhill populations of Cornus florida. Soil Nutrient Content: generally rich to occasionally poor. Microclimate: Warm to cool; humid to dry. Hydrological Features: surface waters are common to scarce. Flood Frequency: permanently to never flooded. Flood Duration: nonexistent to permanent. Fire Frequency: common to rare. Drought Frequency: frequent to rare. Insolation: full sun to full shade

Biotic Structure Key Species: Members of Cornus (Swida) must be present. Vegetation Type: open shrublands to closed-canopy forests. Shelter, Foraging, and Nesting Sites: shrub thickets in general offer shelter, nesting, and foraging sites for many species of animals (see General Shrublands and Thickets). The flowers of Dogwoods are visited by a wide range of generalist pollinators, and the seeds they produce are eaten and dispersed by a wide range of birds.

Co-evolved Species Groups Phagic and Competitory Symbioses
Cornus species // Antispila cornifoliella-Antispila freemani-Caloptilia cornusella-Epinotia lindana-Eudeilinia herminiata-Euthyatira pudens-Hypena bijugalis-Olethreutes connectum

Determining Species
Taxa Global RankState RankProbability of Extirpation (PE)
MOTHS
Antispila cornifoliella GNRSU0.0020
Antispila freemani GNRS1S30.0460
Caloptilia cornusella GNRS2S40.0058
Epinotia lindana - Diamondback Epinotia Moth GNRSU0.0020
Eudeilinia herminiata - Northern Eudeilinea Moth G5S3S40.0020
Euthyatira pudens - Dogwood Thyatirid Moth G5S40.0007
Hypena bijugalis - Dimorphic Bomolocha G5S4S50.0002
Olethreutes connectum - Bunchberry Leaffolder Moth GNRSU0.0020
GALL MIDGES
Resseliella clavula
Expected Number of Extirpations with a PE value (Sum of PE) = 0.0607
N = Number of Extant Species with a PE value = 8
Average PE = ENE/N = 0.0076
Number of S5 species = 0
Proportion of Secure Species = Number of S5 Species/N = 0.0000
Habitat Risk Index = ENE x (1 – PSS) = 0.0607

Estimated Risk to the Determining Species
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 2022-01-19 03:05:54