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:
Field Height
2
m
Field Cover
80
%
Misc Fields:
Observation Narrative
This small opening (ca. 500 sq. m) is dominated by Pontederia cordata and Polygonum punctatum and is bordered by taller Zizania aquatica vegetation. Some open water is present ca. 1 hr after unusually high low tide following Hurricane Dennis; water depth ca. 20 cm at time of sampling. It is difficult to determine how much low vegetation - chiefly Murdannia keisak - is submerged. This vegetation patch extends upstream across transect, and perhaps only 20% of total extent occurs on the downstream side. Similar vegetation occurs in a more narrow band towards the river, between Zizania and tidal flat containing Nuphar advena.