085-SOUT-0022
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:16856-{468863F5-3CCD-40FF-B7A4-3A2E1EE956E9} » Citing info
Plot ID Fields:
Author Plot Code	085-SOUT-0022
Author Observation Code	085-SOUT-0022
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	10 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	37 º
Longitude	-77 º
State or Province	Virginia
Named Places	county: Southampton region|state|province: Virginia
Layout Fields:
DSG Polygon	16 x 25 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	18 m
Slope Aspect	(n/a, flat) º
Slope Gradient	0 º
Topographic Position	basin/depression
Landform	backswamp/slough/oxbow
Hydrologic Regime	non-tidal - seasonally flooded
Soil Moisture Regime	subhydric
Soil Drainage	very poorly drained
Methods Fields:
Observation Start Date	09-Sep-2010
Observation End Date	09-Sep-2010
Project	Virginia Heritage
Cover Method	Carolina Vegetation Survey
Stratum Method	No Strata
Stem Size Limit	2.5 cm
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	400 m²
Plot Quality Fields:
Plot Validation Level	(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
Tree Height	31 m
Shrub Height	6 m
Field Height	1 m
Tree Cover	95 %
Shrub Cover	10 %
Field Cover	60 %
Misc Fields:
Observation Narrative	This plot captures a fairly typical Nyssa aquatica swamp that occupies an extensive backswamp along the Meherrin River. The sample is located about 40 m from the base of an impressive bluff at the back edge of the floodplain. Seasonal flooding from river flow inputs is obviously the primary hydrological regime, although groundwater seepage from the base of the bluff may locally contribute to the swamp. The overstory is strongly dominated by medium-size (up to 80 cm DBH) Nyssa aquatica, with scattered Nyssa biflora also present. Stand age was estimated by International Paper to be > 99 years. The open understory consists of young Nyssa aquatic recruitment and a scattering of Fraxinus caroliniana, Acer rubrum, and Liquidambar. The area we chose to sample has somewhat higher herb cover and greater herb diversity than many parts of the swamp; it is strongly dominated by a patch of Saururus cernuus but contains a number of low-cover hydrophytic forbs.

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 Nyssa aquatica Nyssa aquatica **   Nyssa aquatica **   Nyssa aquatica **   Nyssa aquatica **   Nyssa aquatica **   Nyssa aquatica **   Nyssa aquatica **   Nyssa aquatica **   -all-   87.5 % 9       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     4 stem(s) 12.5 cm ± 2.5 cm     2 stem(s) 17.5 cm ± 2.5 cm     1 stem(s) 22.5 cm ± 2.5 cm     2 stem(s) 32.5 cm ± 2.5 cm     2 stem(s) 37.5 cm ± 2.5 cm     6 stem(s) 45.5 cm ± 0.5 cm     1 stem(s) 57.5 cm ± 0.5 cm     1 stem(s) 65.5 cm ± 0.5 cm     1 stem(s) 74.5 cm ± 0.5 cm     1 stem(s) 80.5 cm ± 0.5 cm     1 stem(s) 2 Saururus cernuus Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   -all-   62.5 % 8       -none- 3 Acer rubrum Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     3 stem(s) 7.5 cm ± 2.5 cm     3 stem(s) 4 Nyssa biflora Nyssa biflora **   Nyssa biflora **   Nyssa biflora **   Nyssa biflora **   Nyssa biflora **   Nyssa biflora **   Nyssa biflora **   Nyssa biflora **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 55.5 cm ± 0.5 cm     1 stem(s) 5 Fraxinus caroliniana Fraxinus caroliniana **   Fraxinus caroliniana **   Fraxinus caroliniana **   Fraxinus caroliniana **   Fraxinus caroliniana **   Fraxinus caroliniana **   Fraxinus caroliniana **   Fraxinus caroliniana **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 6 Pilea pumila Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   -all-   3.5 % 4       -none- 7 Liquidambar styraciflua Liquidambar styraciflua **   Liquidambar styraciflua **   Liquidambar styraciflua **   Liquidambar styraciflua **   Liquidambar styraciflua **   Liquidambar styraciflua **   Liquidambar styraciflua **   Liquidambar styraciflua **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     1 stem(s) 8 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   1.5 % 3       -none- 9 Carex bromoides ssp. bromoides Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   Carex bromoides ssp. bromoides **   -all-   1.5 % 3       -none- 10 Poa autumnalis Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   -all-   0.505 % 2       -none- 11 Campsis radicans Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   -all-   0.505 % 2       -none- 12 Ranunculus pusillus Ranunculus pusillus **   Ranunculus pusillus **   Ranunculus pusillus **   Ranunculus pusillus **   Ranunculus pusillus **   Ranunculus pusillus **   Ranunculus pusillus **   Ranunculus pusillus **   -all-   0.505 % 2       -none- 13 Itea virginica Itea virginica **   Itea virginica **   Itea virginica **   Itea virginica **   Itea virginica **   Itea virginica **   Itea virginica **   Itea virginica **   -all-   0.505 % 2       -none- 14 Mimulus alatus Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   -all-   0.505 % 2       -none- 15 Murdannia keisak Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   -all-   0.505 % 2       -none- 16 Scutellaria lateriflora Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   -all-   0.505 % 2       -none- 17 Carex gigantea Carex gigantea **   Carex gigantea **   Carex gigantea **   Carex gigantea **   Carex gigantea **   Carex gigantea **   Carex gigantea **   Carex gigantea **   -all-   0.505 % 2       -none- 18 Ilex opaca var. opaca Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   -all-   0.505 % 2       -none- 19 Carex radiata Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   -all-   0.505 % 2       -none- 20 Ludwigia palustris Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   -all-   0.505 % 2       -none- 21 Lycopus rubellus Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   Lycopus rubellus **   -all-   0.505 % 2       -none- 22 Carex crinita Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   -all-   0.505 % 2       -none- 23 Symphyotrichum lateriflorum Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   -all-   0.505 % 2       -none- 24 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   0.505 % 2       -none- 25 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-   0.505 % 2       -none- 26 Viola affinis Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   -all-   0.505 % 2       -none- 27 Persicaria virginiana Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   -all-   0.505 % 2       -none- 28 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   0.505 % 2       -none- 29 Glyceria septentrionalis Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   -all-   0.505 % 2       -none- 30 Glyceria striata var. striata Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   -all-   0.505 % 2       -none- 31 Quercus lyrata Quercus lyrata **   Quercus lyrata **   Quercus lyrata **   Quercus lyrata **   Quercus lyrata **   Quercus lyrata **   Quercus lyrata **   Quercus lyrata **   -all-   0.505 % 2       -none- 32 Cinna arundinacea Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   -all-   0.505 % 2       -none- 33 Bidens discoidea Bidens discoidea **   Bidens discoidea **   Bidens discoidea **   Bidens discoidea **   Bidens discoidea **   Bidens discoidea **   Bidens discoidea **   Bidens discoidea **   -all-   0.505 % 2       -none- 34 Commelina virginica Commelina virginica **   Commelina virginica **   Commelina virginica **   Commelina virginica **   Commelina virginica **   Commelina virginica **   Commelina virginica **   Commelina virginica **   -all-   0.05 % 1       -none- 35 Cardamine pensylvanica Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   -all-   0.05 % 1       -none- 36 Impatiens capensis Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   -all-   0.05 % 1       -none- 37 Lycopus virginicus Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   -all-   0.05 % 1       -none- 38 Gratiola virginiana Gratiola virginiana **   Gratiola virginiana **   Gratiola virginiana **   Gratiola virginiana **   Gratiola virginiana **   Gratiola virginiana **   Gratiola virginiana **   Gratiola virginiana **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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