County: Harrison Co.
Forest: National Forests in Mississippi — De Soto National Forest
District: Harrison Experimental Forest
Established: 1989; Acres: 109
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Physical and Climatic Conditions
Nearest weather station, with distance and direction from RNA: The nearest weather station is the Saucier Weather Station, 1.3 miles northeast of the RNA
Annual precipitation (type, seasonal distribution): Annual precipitation is 67.72 in (172.01 cm). Rainfall is generally heaviest during July-September and lightest during October-November.
Maximum and minimum temperatures: The mean annual temperature is 67.3°F, with the warmest weather in June-August, when the mean temperature is 80°F, and the coldest months are December-February when the mean temperature is 47°F.
Elevation: 140’ to 214’ (42.67 to 65.23 m)
Geology and Soils: The subject tract is underlain by the Pliocene aged Citronelle Formation and the Miocene aged Pascagoula Formation and is typical of the Gulf Coastal Plain geologic province. Structural elements in the area are the Higgins anticline to the north and Hancock Ridge to the west. The strike of these formations is generally east–west and their dip is to the south toward the Gulf of Mexico. The Citronelle consists primarily of river terrace deposits of interbedded sand, gravel and clay which are typically brick red in color. Sediments of the Pascagoula Formation consist of interbedded fine–grained silty sands, silts and sandy clays which are usually orange in color.
Aquatic Features: No information is available
Plant Communities: The RNA is composed of an undisturbed stand of longleaf pine (Pinus palustris), which comprises 90% of the overstory. It is in the western portion of the species’ range. This is a second generation forest which came in following clearcutting in the 1920s. Other tree species present include: southern red oak (Quercus falcata), post oak (Q. stellata), sand post oak (Q. stellata var. margaretta), laurel oak (Q. laurifolia), and blackjack oak (Q. marilandica).
SAF Cover Types:
70 Longleaf pine
At Risk Species: This is excellent habitat for the federal threatened and state endangered gopher tortoise (Gopherus polyphemus), and the state endangered black pine snake (Pituophis melanoleucus). Bachmann’s sparrow Aimophila aestivalis, a state endangered species, has been sighted on the Harrison RNA.
Common Shrub Species: The open understory includes several ericaceous shrubs (Vaccinium spp. , dogwood (Cornus florida), sassafras (Sassafras albidum), yaupon (Ilex vomitoria) and wax myrtle (Myrica cerifera).
Common Herbaceous Species: There is a dense growth of saw palmetto (Serenoa repens). Common species include: meadow beauty (Rhexia allifanus), gopher apple (Licania michauxii) and Calamintha coccinea.
Common Mammal Species:
Common Bird Species: Twenty seven bird species have been observed in the area including the American kestrel (Falco sparverius), great horned owl (Bubo virginianus), red headed woodpecker (Melanerpes erythrocephalus), great crested flycatcher Myiarchus crinitus), tufted titmouse (Parvus bicolor), loggerhead shrike (Lanius ludovicianus), pine warbler (Dendroica pinus), and the summer tanager (Piranga rubra).
Related Reports and Publications:
Additional reports and publications can also be found by clicking on the “RNA Publications and Products” link in the site menu or by clicking here.
Devall, M.S., J.M. Grender and J.Koretz. 1991. Dendroecological analysis of a longleaf pine (Pinus palustris) forest in Mississippi. Vegetatio 93:1-8.
Last Modified: 1/27/2016 by Margaret Devall (firstname.lastname@example.org)