24C. Hydrology Summary (by community type) 

 Hydrologic system: Palustrine 

 Hydrologic subsystem: Aqueous 

 Water chemistry: Fresh 



Water regime: Saturated to intermittently exposed 

 Drainage class: Very poorly drained 

 Drainage basin: Northeast Cape Fear River 



Hydrology characterization: A very poorly drained, saturated to 

 intermittently exposed, freshwater palustrine system. 



24D. Topography Summary 



Landform: Nearly circular marine embayments with drainage seaward 



blocked by Pleistocene sands 



Shelter: Deeply sheltered 



Aspect: not applicable 



Slope angle: not applicable 



Profile: Concave to flat 



Surface patterns: Smooth 



Position: not applicable 



25. Physiographic Characterization of Natural Area: An edaphic climax 

 community of a hydrosere which occupies a relict embayment which now 

 drains into the Northeast Cape Fear River and situated in the Coastal 

 Plain province of the Atlantic Plain. 



Geological Formation: Cretaceous Pee Dee formation and Eocene Castle 

 Hayne formation overlain by Pleistocene to Recent sands 

 Geological Formation age: Cretaceous formation: 60 million years; 

 Eocene formation: 40-50 million years,- Pleistocene to Recent: 1-3 

 million years to approximately 6 thousand years before present 



26. Summary - Endangered and Threatened Species 



(1) Name of species: Dionaea muscipula (DIONAEACEAE) Venus' fly-trap 



Species legal status and authority: NC threatened endemic, exploited 



(Cooper et al. 1977) 



Number of populations on site: 3 seen in Holly Shelter 



Number of individuals per population: 15 to 1,000 



Size or maturity of individuals: All stages 



Phenology of population: Vegetative: 60%; Flowering: 25%; Fruiting 15% 



General vigor of population: Vigorous 



Disturbance or threats to population: Harvesting by local residents; 



some enforcement by Holly Shelter Game Lands staff 



Habitat characteristics: 



Plant community: Longleaf pine savannas 



Topography: Level to gently sloping 



Soil series: Localized occurrence of Leon sand 



Microclimate: Not determined 



Drainage basin: Northeast Cape Fear River 



Other plant and animal species present: Aristida stricta , Vaccinium 



crassifolium , Polygala lutea, Polygala cruciata, Chaptalia tomentosa, 



Chrysopsis graminif olia ; Whitetail deer (tracks) 



13 



