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
31
m
Shrub Height
5
m
Field Height
5
m
Tree Cover
80
%
Shrub Cover
50
%
Field Cover
65
%
Nonvascular Cover
1
%
Misc Fields:
Observation Narrative
Narrow stream bottom with variable seepage inputs. Plot includes both a muck-filled hollow and a slightly higher sandy terrace. Shells were exposed in the main streambank upstream from plot. The abundance of the calciphilic shrub Dirca palustris in this and other seepage swamps of York River State Park is noteworthy.