Releve Virginia Division of Natural Heritage, see http://www.dcr.virginia.gov/natural_heritage/documents/nh_plotform_instructions.pdf
Overall Taxon Cover Values are Automatically Calculated?
no
Plot Quality Fields:
Plot Validation Level
(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
--no data--
Misc Fields:
Observation Narrative
Plot location: North Shore of Lake Drummond, ca. 0.1 miles ESE of Jerico Ditch, Great Dismal Swamp NWR. Long bearing of plot centerline = S77E.
NOTE: High water mark on trees 48cm above lake level on 9/12/95.
A seasonally flooded sparse woodland on the sandy and peaty shore of Lake Drummond. Taxodium distichum forms an open and irregular tree canopy, beneath which grow patches of Cephalanthus occidentalis and a few other shrubs. When water levels draw down in late summer and fall, colonies of Juncus repens and a suite of well-adapted annuals occupy large areas of sand, along with exposed, adventitious roots of the Taxodium. The presence of submerged Taxodium stumps and still-living trees growing well out into the lake suggest that this community's distribution has varied with fluctuations in lake size and water levels over time. In the last 100 years, the Lake's natural draw-down cycle has been altered by the construction of an outlet ditch and management of the Lake as a water reserve for the Intracoastal Waterway.
0-12cm - light brown sand
12-30cm - black, clayey and organic sand; WATER TABLE AT 13cm.
30-50cm - black sandy clay with undecomposed roots
50-110cm - dark gray, sandy clay w/ scattered roots
110cm - gray, fine sandy clay.
Disturbance Data:
Disturbance Type
Disturbance Intensity
Disturbance Comment
unknown
Anthropagenic perturbations of natural draw-down cycle.
