085-RIVB-0015
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15392-{DD33C078-DE47-415C-8776-4CEEDD78DB74} » Citing info
Plot ID Fields:
Author Plot Code	085-RIVB-0015
Author Observation Code	085-RIVB-0015
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	39 º
Longitude	-77 º
State or Province	Virginia
Named Places	county: Fairfax county: Fairfax region|state|province: Virginia
Layout Fields:
DSG Polygon	10 x 40 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	48 m
Slope Aspect	(n/a, flat) º
Slope Gradient	0 º
Topographic Position	plain/level/bottom
Landform	alluvial flat/alluvial terrace/floodplain
Hydrologic Regime	non-tidal - temporarily flooded
Soil Moisture Regime	subhygric
Soil Drainage	somewhat poorly drained
Methods Fields:
Observation Start Date	25-Jun-2004
Observation End Date	25-Jun-2004
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	33 m
Shrub Height	5 m
Field Height	8 m
Tree Cover	85 %
Shrub Cover	35 %
Field Cover	40 %
Nonvascular Cover	0.5 %
Misc Fields:
Observation Narrative	The plot was positioned in a swale in the Potomac River floodplain, ca. 0.1 mi. NNE of the Visitor Center at Riverbend Park. A long, narrow (10 X 40 m) configuration was used to maintain environmental and compositional homogeneity. The swale receives frequent, shallow flooding and is forested in a mixed stand of Acer saccharinum, Ulmus americana, Fraxinus pennsylvanica, and Platanus occidentalis, with occasional Populus deltoides (outside the plot) also present. Acer negundo is the dominant understory tree. The lowest part of the swale is relatively open and free of woody plants, supporting a dense, late-season herbaceous flora of Boehmeria cylindrica, Impatiens capensis, Laportea canadensis, Pilea pumila and other 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 Acer negundo var. negundo Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     3 stem(s) 12.5 cm ± 2.5 cm     3 stem(s) 65.5 cm ± 0.5 cm     1 stem(s) 2 Acer saccharinum Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 73.5 cm ± 0.5 cm     1 stem(s) 3 Lindera benzoin Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     12 stem(s) 4 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 77.5 cm ± 0.5 cm     1 stem(s) 5 Fraxinus pennsylvanica Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     3 stem(s) 7.5 cm ± 2.5 cm     3 stem(s) 79.5 cm ± 0.5 cm     1 stem(s) 6 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   7.5 % 5       -none- 7 Platanus occidentalis Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 51.5 cm ± 0.5 cm     1 stem(s) 8 Viola sororia Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   -all-   7.5 % 5       -none- 9 Pilea pumila Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   -all-   7.5 % 5       -none- 10 Persicaria longiseta Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   -all-   7.5 % 5       -none- 11 Impatiens capensis Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   -all-   3.5 % 4       -none- 12 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   1.5 % 3       -none- 13 Urtica dioica Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   -all-   1.5 % 3       -none- 14 Geum canadense Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   -all-   1.5 % 3       -none- 15 Asimina triloba Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 16 Alliaria petiolata Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   -all-   1.5 % 3       -none- 17 Laportea canadensis Laportea canadensis **   Laportea canadensis **   Laportea canadensis **   Laportea canadensis **   Laportea canadensis **   Laportea canadensis **   Laportea canadensis **   Laportea canadensis **   -all-   1.5 % 3       -none- 18 Persicaria virginiana Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   -all-   1.5 % 3       -none- 19 Carex jamesii Carex jamesii **   Carex jamesii **   Carex jamesii **   Carex jamesii **   Carex jamesii **   Carex jamesii **   Carex jamesii **   Carex jamesii **   -all-   0.505 % 2       -none- 20 Arisaema triphyllum Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   -all-   0.505 % 2       -none- 21 Carex intumescens var. intumescens Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   Carex intumescens var. intumescens **   -all-   0.505 % 2       -none- 22 Verbesina alternifolia Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   -all-   0.505 % 2       -none- 23 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-   0.505 % 2       -none- 24 Festuca subverticillata Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   -all-   0.505 % 2       -none- 25 Lonicera maackii Lonicera maackii **   Lonicera maackii **   Lonicera maackii **   Lonicera maackii **   Lonicera maackii **   Lonicera maackii **   Lonicera maackii **   Lonicera maackii **   -all-   0.505 % 2       -none- 26 Carex conjuncta Carex conjuncta **   Carex conjuncta **   Carex conjuncta **   Carex conjuncta **   Carex conjuncta **   Carex conjuncta **   Carex conjuncta **   Carex conjuncta **   -all-   0.505 % 2       -none- 27 Vitis vulpina Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   -all-   0.505 % 2       -none- 28 Parthenocissus quinquefolia Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   -all-   0.505 % 2       -none- 29 Rosa multiflora Rosa multiflora **   Rosa multiflora **   Rosa multiflora **   Rosa multiflora **   Rosa multiflora **   Rosa multiflora **   Rosa multiflora **   Rosa multiflora **   -all-   0.505 % 2       -none- 30 Celtis occidentalis Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   -all-   0.505 % 2       -none- 31 Circaea canadensis ssp. canadensis Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   -all-   0.505 % 2       -none- 32 Elymus virginicus var. virginicus Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   -all-   0.505 % 2       -none- 33 Leersia virginica Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   -all-   0.505 % 2       -none- 34 Sanicula odorata Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   -all-   0.505 % 2       -none- 35 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   0.505 % 2       -none- 36 Carex grisea Carex grisea **   Carex grisea **   Carex grisea **   Carex grisea **   Carex grisea **   Carex grisea **   Carex grisea **   Carex grisea **   -all-   0.505 % 2       -none- 37 Poa trivialis Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   -all-   0.505 % 2       -none- 38 Potentilla indica Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   -all-   0.505 % 2       -none- 39 Erechtites hieraciifolius Erechtites hieraciifolius **   Erechtites hieraciifolius **   Erechtites hieraciifolius **   Erechtites hieraciifolius **   Erechtites hieraciifolius **   Erechtites hieraciifolius **   Erechtites hieraciifolius **   Erechtites hieraciifolius **   -all-   0.05 % 1       -none- 40 Symphyotrichum lateriflorum Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   -all-   0.05 % 1       -none- 41 Perilla frutescens Perilla frutescens **   Perilla frutescens **   Perilla frutescens **   Perilla frutescens **   Perilla frutescens **   Perilla frutescens **   Perilla frutescens **   Perilla frutescens **   -all-   0.05 % 1       -none- 42 Oxalis stricta Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   -all-   0.05 % 1       -none- 43 Bidens frondosa Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   -all-   0.05 % 1       -none- 44 Hydrophyllum canadense Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   -all-   0.05 % 1       -none- 45 Hedera helix Hedera helix **   Hedera helix **   Hedera helix **   Hedera helix **   Hedera helix **   Hedera helix **   Hedera helix **   Hedera helix **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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