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
Stem Observation Area
400
m²
Plot Quality Fields:
Plot Validation Level
(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
Tree Height
21
m
Shrub Height
6
m
Field Height
5
m
Tree Cover
75
%
Shrub Cover
65
%
Field Cover
35
%
Nonvascular Cover
5
%
Misc Fields:
Observation Narrative
Directions to Plot: Take Hill Ewell Dr. off Rte.20 to Orange Plank Rd. Turn right on Orange Plank Rd. and park in first Park pull-off on right (trail head and historical marker). Plot is SE of Orange Plank Rd. beyond oak-heath forest (at depressions).
Depression site at head of ravine running through Hamilton's Thicket. Coastal plain veg throughout stand. Need to see aerial photo for extent of veg type. Are a few dying/dead snags of trees throughout. Bryophyte cover largely sphagnum. Larger Magnolia virg stems outside of plot. Mean groundwater pH (6 samples) = 4.79. Mean groundwater temperature (deg. C, 6 samples) = 8.98.