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
38
m
Shrub Height
6
m
Field Height
1
m
Tree Cover
75
%
Shrub Cover
60
%
Field Cover
55
%
Nonvascular Cover
0.5
%
Misc Fields:
Observation Narrative
Site is a concavity in the north-facing bluff along the Potomac River in Turkey Run Park. It supports a rich mesophytic forest of Liriodendron tulipifera, Fraxinus americana, Tilia americana, Carya cordiformis, Acer saccharum, Ulmus rubra, and Asimina triloba. A dense clone of Caulophyllum thalictroides dominates the herb layer. High values for Ca and Mg in soil samples are consistent with this composition and may result from undetected inclusions of mafic rock in the mapped diamictite tectonite unit.