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085-NLAR-0005P
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:14915-{6BDF05B1-A666-4AA2-AB1D-2478407253B9}
» Citing info
Plot ID Fields: 
Author Plot Code ? 085-NLAR-0005P
Author Observation Code ? 085-NLAR-0005P
Location Fields: MAP: Google | Yahoo | TopoZone | MapQuest
Confidentiality Status ? 100 km radius (nearest degree)
Latitude ? 37 º
Longitude ? -76 º
State or Province ? Virginia
Named Places
region|state|province: Virginia
Layout Fields: 
DSG Polygon ? 5.64 m radius
Area ? 100
Permanence ? not permanent
Environment Fields: 
Elevation ? 1 m
Slope Aspect ? (n/a, flat) º
Slope Gradient ? 0 º
Topographic Position ? plain/level/bottom
Landform ? alluvial flat/alluvial terrace/floodplain
Hydrologic Regime ? tidal - wind
Soil Moisture Regime ? hydric
Soil Drainage ? very poorly drained
Water Salinity ? oligohaline
Methods Fields: 
Observation Start Date ? 11-Sep-1995
Observation End Date ? 11-Sep-1995
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: 
--no data--
Misc Fields: 
Observation Narrative ? Plot location: East side of Milldam Creek, ca. 0.4 miles NW of its confluence with the North Landing River. Plot center marked with a 1" white PVC pipe. Hummock and hollow microtopography. Water 20-40cm deep in pools, with much filamounteus algae. The habitat is a strongly hummock-and-hollow marsh greatly dominated by a dense stand of black needle rush (Juncus roemerianus). Juncus roemerianus, a species characteristic of brackish to saline marshes, is extensively distributed in the large, essentially freshwater North Landing River marshes, where it may be a relic of former, more brackish conditions. The species is considered a strong competitor in stressed, floristically depauperate brackish marshes, but maintains dominance in patches among relatively diverse freshwater marsh vegetation here and along the Northwest River.
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 Juncus roemerianus Juncus roemerianus **   Juncus roemerianus **   Juncus roemerianus **   Juncus roemerianus **   Juncus roemerianus **   Juncus roemerianus **   Juncus roemerianus **   Juncus roemerianus **   -all-  
87.5 %
9       -none-
2 Spartina cynosuroides Spartina cynosuroides **   Spartina cynosuroides **   Spartina cynosuroides **   Spartina cynosuroides **   Spartina cynosuroides **   Spartina cynosuroides **   Spartina cynosuroides **   Spartina cynosuroides **   -all-  
1.5 %
3       -none-
3 Sagittaria lancifolia var. media Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   Sagittaria lancifolia var. media **   -all-  
1.5 %
3       -none-
4 Cyperus haspan Cyperus haspan **   Cyperus haspan **   Cyperus haspan **   Cyperus haspan **   Cyperus haspan **   Cyperus haspan **   Cyperus haspan **   Cyperus haspan **   -all-  
0.505 %
2       -none-
5 Eleocharis fallax Eleocharis fallax **   Eleocharis fallax **   Eleocharis fallax **   Eleocharis fallax **   Eleocharis fallax **   Eleocharis fallax **   Eleocharis fallax **   Eleocharis fallax **   -all-  
0.505 %
2       -none-
6 Galium obtusum Galium obtusum **   Galium obtusum **   Galium obtusum **   Galium obtusum **   Galium obtusum **   Galium obtusum **   Galium obtusum **   Galium obtusum **   -all-  
0.505 %
2       -none-
7 Mikania scandens Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   -all-  
0.505 %
2       -none-
8 Pontederia cordata var. cordata Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   -all-  
0.505 %
2       -none-
9 Pluchea odorata Pluchea odorata **   Pluchea odorata **   Pluchea odorata **   Pluchea odorata **   Pluchea odorata **   Pluchea odorata **   Pluchea odorata **   Pluchea odorata **   -all-  
0.505 %
2       -none-
10 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-  
0.505 %
2       -none-
11 Symphyotrichum subulatum Symphyotrichum subulatum **   Symphyotrichum subulatum **   Symphyotrichum subulatum **   Symphyotrichum subulatum **   Symphyotrichum subulatum **   Symphyotrichum subulatum **   Symphyotrichum subulatum **   Symphyotrichum subulatum **   -all-  
0.505 %
2       -none-
This table is SORTABLE. Click the headers to sort ascending and descending.

Stratum Definitions:
Sorry, no Stratum Definitions found.
This table is SORTABLE. Click the headers to sort ascending and descending.
Observation Contributors:
Party ?Role ?
Fleming, Gary Author
Community Classification:
More Classification Start Date ? Community AssignmentsContributors
Details 01-Oct-2002
Community Concept ?Class Fit ?Class Confidence ?Community Authority Reference ?Typal ?
Juncus roemerianus - Pontederia cordata 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                         0-10cm - Peat (H7), firm 10-25cm - peat (H8); some silt? 35-40cm - peat (H7) 70cm - very firm lens- abundant methane 75-80cm - peat (H6) 80+cm - liquid soup, abundant methane.


Disturbance Data:
Disturbance Type ?Disturbance Intensity ?Disturbance Comment ?
unknown   nutria damage


User Defined Values
No User Defined Data for this plot