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085-YRSP-0004
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:16015-{9270034D-7770-423A-A06A-206ACDAFACA3}
» Citing info
Plot ID Fields: 
Author Plot Code ? 085-YRSP-0004
Author Observation Code ? 085-YRSP-0004
Location Fields: MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy ? 25 m
Confidentiality Status ? 100 km radius (nearest degree)
Latitude ? 37 º
Longitude ? -77 º
State or Province ? Virginia
Named Places
county: James City
region|state|province: Virginia
Layout Fields: 
DSG Polygon ? 8 x 12.5 m
Area ? 100
Permanence ? not permanent
Environment Fields: 
Elevation ? 1 m
Slope Aspect ? (n/a, flat) º
Topographic Position ? plain/level/bottom
Landform ? tidal flat
Hydrologic Regime ? tidal - irregularly flooded
Soil Moisture Regime ? hydric
Soil Drainage ? very poorly drained
Water Salinity ? polyhaline
Methods Fields: 
Observation Start Date ? 08-Sep-2000
Observation End Date ? 08-Sep-2000
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 ? 1 m
Field Cover ? 80 %
Misc Fields: 
Observation Narrative ? Rectangular plots seem to be the rule in these Taskinas Creek marshes where pronounced zonation reflects apparently steep gradients of halinity and hydroperiod. A zone of Spartina alterniflora and S. patens occupies a narrow (generally only 10-12 m wide) zone between the creek and interior salt meadow dominated by S. patens and Distichlis spicata. In this stand S. alterniflora is the clear dominant, but S. patens is an important associate, particularly toward the interior (toward the salt meadow). The absence of any surface water and the height of the marsh surface relative to the creek surface at the time of sampling suggest that this zone -- and indeed the entire marsh perhaps -- may not flood with every tidal cycle. Substrate is less firm and more uneven than in two previous plots along Taskinas Creek. The creek, a zone of S. cynosuroides, and the Distichlis-S. patens vegetation occupy from left to right, respectively, the background of the photo. At least two additional patchy vegetation types are present more or less upstream in this marsh. A zone of Spartina alterniflora and Schoenoplectus americanus extends over an undetermined area, and one discrete patch of Juncus roemerianus occupies ca. 500 sq. m.
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 Spartina alterniflora Spartina alterniflora **   Spartina alterniflora **   Spartina alterniflora **   Spartina alterniflora **   Spartina alterniflora **   Spartina alterniflora **   Spartina alterniflora **   Spartina alterniflora **   -all-  
62.5 %
8       -none-
2 Spartina patens Spartina patens **   Spartina patens **   Spartina patens **   Spartina patens **   Spartina patens **   Spartina patens **   Spartina patens **   Spartina patens **   -all-  
7.5 %
5       -none-
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Stratum Definitions:
Sorry, no Stratum Definitions found.
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Observation Contributors:
Party ?Role ?
Coulling, Philip Author
Community Classification:
More Classification Start Date ? Community AssignmentsContributors
Details 01-Apr-2007
Community Concept ?Class Fit ?Class Confidence ?Community Authority Reference ?Typal ?
Salicornia (depressa, bigelovii, maritima) - Spartina alterniflora Salt Marsh 2 Low   no
No Class Contributors.
Details 08-Dec-2010
Community Concept ?Class Fit ?Class Confidence ?Community Authority Reference ?Typal ?
Spartina alterniflora / (Ascophyllum nodosum) Acadian/Virginian Zone Salt Marsh 4 Medium   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       18.5200004577637 %           3.90000009536743 64.620002746582 84.2099990844727 % Light to dark gray, organic-rich, mucky clay; more shoot than root material in upper 10 cm; evidently higher clay content than in plots YRSP002 and YRSP003, but fine fibric organic matter still abounds


User Defined Values
No User Defined Data for this plot