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
30
m
Shrub Height
6
m
Field Height
5
m
Tree Cover
85
%
Shrub Cover
12
%
Field Cover
20
%
Nonvascular Cover
12
%
Misc Fields:
Observation Narrative
Plot is located in the same stand as ROCH003, but located on the slightly concave side slope of a ravine off the river, about 300 m to the southwest. Here, boulders and stone of the underlying Conococheague Formation are scattered over the slope, and soils have high pH, calcium, magnesium, and total base saturation. In this part of the stand, Thuja occidentalis more or less shares overstory dominance with Pinus strobus but dominates the sub-canopy layers. Fraxinus americana, Quercus muhlenbergii, and Acer saccharum are scattered in the understory, while Ostrya virginiana dominates an open shrub layer. site supports an exceptionally large stand of medium-age mixed forest with Thuja occidentalis the leading canopy dominant throughout. The herb layer is somewhat sparse but Carex eburnea forms several locally dense patches.
