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085-PAMR-0012
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15054-{D5257AA7-2677-44EC-A01C-B2CE3C55CA58}
» Citing info
Plot ID Fields: 
Author Plot Code ? 085-PAMR-0012
Author Observation Code ? 085-PAMR-0012
Location Fields: MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy ? 250 m
Confidentiality Status ? 100 km radius (nearest degree)
Latitude ? 38 º
Longitude ? -77 º
State or Province ? Virginia
Named Places
county: King William
region|state|province: Virginia
Layout Fields: 
DSG Polygon ? plotless
Area ? 100
Permanence ? not permanent
Environment Fields: 
Elevation ? 0 m
Slope Aspect ? (n/a, flat) º
Topographic Position ? plain/level/bottom
Landform ? tidal flat
Hydrologic Regime ? tidal - irregularly exposed
Soil Moisture Regime ? hydric
Soil Drainage ? very poorly drained
Water Salinity ? freshwater
Methods Fields: 
Observation Start Date ? 10-Sep-1998
Observation End Date ? 10-Sep-1998
Project ? Virginia Heritage
Cover Method ? Carolina Vegetation Survey
Stratum Method ? No Strata
Method Narrative ? 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 ? 75 m
Field Cover ? 75 %
Misc Fields: 
Observation Narrative ? This sample represents a true releve. No plot was laid out due to low species richness, large spatial extent of homogeneous vegetation, and softness of substrate. This (sub)tidal mud flat is the largest on the Pamunkey River. The vegetation is dominated by Nuphar advena, with subtly high cover of Ceratophyllum demersum. More vegetation samples will be necessary to determine if this latter species is truly characteristic of the entire tidal flat or the community type or to capture any additional prostrate or floating species. One such taxon is Sagittaria subulata, which is locally restricted to a narrow band (< 10 m wide) of tidal flat largely devoid of Nuphar and immediately adjacent to the higher and clearly intertidal marsh. Close examination of a small area reveals that actual cover of Nuphar is less than what visual estimates from a distance suggest.
Taxa occurring on this plot-observation
Change plant label:
Change Strata Shown:
ord Author Plant Name ?Original Interpretation, full Scientific Name ?Original Interpretation, Scientific Name without authors ?Original Interpretation, Common Name ?Original Interpretation, USDA Code ?Current Interpretation, full Scientific Name ?Current Interpretation, Scientific Name without authors ?Current Interpretation, Common Name ?Current Interpretation, USDA Code ? Stratum ?Cover ?Original Cover Code ?Basal Area ?Biomass ?Inference Area ? Stems: Stem Diameters (graphically):
1 Nuphar advena Nuphar advena **   Nuphar advena **   Nuphar advena **   Nuphar advena **   Nuphar advena **   Nuphar advena **   Nuphar advena **   Nuphar advena **   -all-  
37.5 %
7       -none-
2 Ceratophyllum demersum Ceratophyllum demersum **   Ceratophyllum demersum **   Ceratophyllum demersum **   Ceratophyllum demersum **   Ceratophyllum demersum **   Ceratophyllum demersum **   Ceratophyllum demersum **   Ceratophyllum demersum **   -all-  
37.5 %
7       -none-
3 Elodea nuttallii Elodea nuttallii **   Elodea nuttallii **   Elodea nuttallii **   Elodea nuttallii **   Elodea nuttallii **   Elodea nuttallii **   Elodea nuttallii **   Elodea nuttallii **   -all-  
17.5 %
6       -none-
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Stratum Definitions:
Sorry, no Stratum Definitions found.
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Observation Contributors:
Party ?Role ?
Alstine, Nancy Field assistant
Heffernan, Kevin Field assistant
Coulling, Philip Author
Community Classification:
More Classification Start Date ? Community AssignmentsContributors
Details 01-Oct-2002
Community Concept ?Class Fit ?Class Confidence ?Community Authority Reference ?Typal ?
Nuphar advena Tidal Marsh 5 High   no
No Class Contributors.


Soil Observations:
Soil Horizon ?Soil Depth Top ?Soil Depth Bottom ?Soil Color ?Soil Organic ?Soil Texture ?Soil Sand ?Soil Silt ?Soil Clay ?Soil Coarse ?Soil PH ?Exchange Capacity ?Base Saturation ?Soil Description ?
unknown       8.90999984741211 %           5 21.75 36.2900009155273 % 0 - 10 - wet, dark brown, unconsolidated organic matter 10 - wet, dark gray clay; apparently little organic matter and very little fibric material


User Defined Values
No User Defined Data for this plot