085-PAMR-0020
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15062-{D3340AC7-92B7-4D4B-AC22-6518E3A30AF9} » Citing info
Plot ID Fields:
Author Plot Code	085-PAMR-0020
Author Observation Code	085-PAMR-0020
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	38 º
Longitude	-77 º
State or Province	Virginia
Named Places	county: New Kent region|state|province: Virginia
Layout Fields:
DSG Polygon	8 x 12.5 m
Area	100 m²
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 - regularly flooded
Soil Moisture Regime	hydric
Soil Drainage	very poorly drained
Water Salinity	freshwater
Methods Fields:
Observation Start Date	29-Sep-1998
Observation End Date	29-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
Stem Observation Area	100 m²
Plot Quality Fields:
Plot Validation Level	(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
Field Height	5 m
Shrub Cover	5 %
Field Cover	95 %
Misc Fields:
Observation Narrative	This site contains a diverse and unusual assemblage of species. This pattern is characteristic of what appear to be natural openings near the Pamunkey River channel in tidal hardwood swamp forest which have likely experienced further reductions in overstory cover as sea level has risen. Here the opening occurs among Alnus serrulata on the fringe of swamp forest along Big Creek. As in plot PAMR002, Murdannia keisak is the overwhelming ground-layer dominant, but high cover of this species has apparently not (yet) resulted in a decrease in species richness. Several species occur in this stand which are only infrequently encountered in freshwater marshes of the middle Pamunkey, including Agalinis purpurea, Sacciolepis striata, Dulichium arundinaceum, and Triadenum walteri. The prevailing stature of the vegetation is low, but scattered emergent stems of several herbaceous species reach heights of 1.5 m. Only a few dead trees occur in the plot; all are small and there is no evidence of any recent overstory stratum. One sapling stump shows signs of beaver activity, and a heavily matted patch of Murdannia suggests the presence of other animals. The extent of vegetation dominated by Murdannia and Bidens laevis into the adjacent open swamp forest suggests that this community constitutes an established vegetation type, at least locally.

Taxa occurring on this plot-observation
Change plant label: --Choose a value-- Author's plant name Original Interpretation, full Scientific Name Original Interpretation, Scientific Name without authors Original Interpretation, USDA Code Original Interpretation, Common Name Current Interpretation, full Scientific Name Current Interpretation, Scientific Name without authors Current Interpretation, USDA Code Current Interpretation, Common Name
Change Strata Shown: --choose one-- show strata (no strata on this plot) show overall cover show strata + overall
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 Murdannia keisak Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   -all-   87.5 % 9       -none- 2 Alnus serrulata Alnus serrulata **   Alnus serrulata **   Alnus serrulata **   Alnus serrulata **   Alnus serrulata **   Alnus serrulata **   Alnus serrulata **   Alnus serrulata **   -all-   3.5 % 4       -none- 3 Peltandra virginica Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   -all-   1.5 % 3       -none- 4 Bidens trichosperma Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   -all-   1.5 % 3       -none- 5 Rhynchospora macrostachya Rhynchospora macrostachya **   Rhynchospora macrostachya **   Rhynchospora macrostachya **   Rhynchospora macrostachya **   Rhynchospora macrostachya **   Rhynchospora macrostachya **   Rhynchospora macrostachya **   Rhynchospora macrostachya **   -all-   1.5 % 3       -none- 6 Sagittaria latifolia Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   -all-   1.5 % 3       -none- 7 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-   1.5 % 3       -none- 8 Hypericum walteri Hypericum walteri **   Hypericum walteri **   Hypericum walteri **   Hypericum walteri **   Hypericum walteri **   Hypericum walteri **   Hypericum walteri **   Hypericum walteri **   -all-   1.5 % 3       -none- 9 Typha latifolia Typha latifolia **   Typha latifolia **   Typha latifolia **   Typha latifolia **   Typha latifolia **   Typha latifolia **   Typha latifolia **   Typha latifolia **   -all-   1.5 % 3       -none- 10 Agalinis purpurea Agalinis purpurea **   Agalinis purpurea **   Agalinis purpurea **   Agalinis purpurea **   Agalinis purpurea **   Agalinis purpurea **   Agalinis purpurea **   Agalinis purpurea **   -all-   0.505 % 2       -none- 11 Osmunda spectabilis Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   -all-   0.505 % 2       -none- 12 Leersia oryzoides Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   -all-   0.505 % 2       -none- 13 Bidens laevis Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   -all-   0.505 % 2       -none- 14 Cicuta maculata var. maculata Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   Cicuta maculata var. maculata **   -all-   0.505 % 2       -none- 15 Echinochloa walteri Echinochloa walteri **   Echinochloa walteri **   Echinochloa walteri **   Echinochloa walteri **   Echinochloa walteri **   Echinochloa walteri **   Echinochloa walteri **   Echinochloa walteri **   -all-   0.505 % 2       -none- 16 Mikania scandens Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   Mikania scandens **   -all-   0.505 % 2       -none- 17 Lobelia cardinalis Lobelia cardinalis **   Lobelia cardinalis **   Lobelia cardinalis **   Lobelia cardinalis **   Lobelia cardinalis **   Lobelia cardinalis **   Lobelia cardinalis **   Lobelia cardinalis **   -all-   0.505 % 2       -none- 18 Dulichium arundinaceum var. arundinaceum Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   Dulichium arundinaceum var. arundinaceum **   -all-   0.505 % 2       -none- 19 Vernonia noveboracensis Vernonia noveboracensis **   Vernonia noveboracensis **   Vernonia noveboracensis **   Vernonia noveboracensis **   Vernonia noveboracensis **   Vernonia noveboracensis **   Vernonia noveboracensis **   Vernonia noveboracensis **   -all-   0.505 % 2       -none- 20 Sacciolepis striata Sacciolepis striata **   Sacciolepis striata **   Sacciolepis striata **   Sacciolepis striata **   Sacciolepis striata **   Sacciolepis striata **   Sacciolepis striata **   Sacciolepis striata **   -all-   0.505 % 2       -none- 21 Saururus cernuus Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   -all-   0.505 % 2       -none- 22 Cornus amomum Cornus amomum **   Cornus amomum **   Cornus amomum **   Cornus amomum **   Cornus amomum **   Cornus amomum **   Cornus amomum **   Cornus amomum **   -all-   0.505 % 2       -none- 23 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   0.505 % 2       -none- 24 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-   0.505 % 2       -none- 25 Carpinus caroliniana Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   -all-   0.505 % 2       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     1 stem(s) 26 Hibiscus moscheutos Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   -all-   0.505 % 2       -none- 27 Persicaria arifolia Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   -all-   0.505 % 2       -none- 28 Asclepias incarnata var. pulchra Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   Asclepias incarnata var. pulchra **   -all-   0.505 % 2       -none- 29 Apios americana Apios americana **   Apios americana **   Apios americana **   Apios americana **   Apios americana **   Apios americana **   Apios americana **   Apios americana **   -all-   0.05 % 1       -none- 30 Galium obtusum ssp. filifolium Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   Galium obtusum ssp. filifolium **   -all-   0.05 % 1       -none- 31 Lycopus rubellus Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   -all-   0.05 % 1       -none- 32 Amaranthus cannabinus Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   -all-   0.05 % 1       -none- 33 Cinna arundinacea Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   -all-   0.05 % 1       -none- 34 Fraxinus pennsylvanica Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   -all-   0.05 % 1       -none- 35 Helenium autumnale Helenium autumnale **   Helenium autumnale **   Helenium autumnale **   Helenium autumnale **   Helenium autumnale **   Helenium autumnale **   Helenium autumnale **   Helenium autumnale **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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