085-RIVB-0021
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15398-{D0093C34-DE51-48C3-A695-54F1DC310813} » Citing info
Plot ID Fields:
Author Plot Code	085-RIVB-0021
Author Observation Code	085-RIVB-0021
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	4 x 25 m
Area	100 m²
Permanence	not permanent
Environment Fields:
Elevation	46 m
Slope Aspect	(n/a, flat) º
Slope Gradient	2 º
Topographic Position	plain/level/bottom
Landform	alluvial flat/alluvial terrace/floodplain
Hydrologic Regime	non-tidal - temporarily flooded
Soil Moisture Regime	subhygric
Soil Drainage	moderately well drained
Methods Fields:
Observation Start Date	26-Aug-2004
Observation End Date	26-Aug-2004
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	2 m
Field Cover	70 %
Misc Fields:
Observation Narrative	This 4 X 25 m plot captures part of a long, narrow, exposed river shore with dense and diverse low herbaceous vegetation. The overall stand is much larger than the plot, although nowhere much wider. Eragrostis hypnoides dominates the suite of fast-growing annuals that germinate quickly when this habitat is exposed in mid- to late-summer. When mature, this vegetation has the appearance of a "lawn." This plot was sampled prior to a significant flood during September 2004. When revisited in early October 2004, most vegetation had been scoured away and the habitat was muddy and barren.

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 Eragrostis hypnoides Eragrostis hypnoides **   Eragrostis hypnoides **   Eragrostis hypnoides **   Eragrostis hypnoides **   Eragrostis hypnoides **   Eragrostis hypnoides **   Eragrostis hypnoides **   Eragrostis hypnoides **   -all-   62.5 % 8       -none- 2 Lindernia dubia var. dubia Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   Lindernia dubia var. dubia **   -all-   17.5 % 6       -none- 3 Cyperus odoratus var. odoratus Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   Cyperus odoratus var. odoratus **   -all-   3.5 % 4       -none- 4 Ludwigia palustris Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   -all-   1.5 % 3       -none- 5 Eupatorium serotinum Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   -all-   1.5 % 3       -none- 6 Lindernia dubia var. anagallidea Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   Lindernia dubia var. anagallidea **   -all-   1.5 % 3       -none- 7 Justicia americana Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   -all-   0.505 % 2       -none- 8 Cyperus erythrorhizos Cyperus erythrorhizos **   Cyperus erythrorhizos **   Cyperus erythrorhizos **   Cyperus erythrorhizos **   Cyperus erythrorhizos **   Cyperus erythrorhizos **   Cyperus erythrorhizos **   Cyperus erythrorhizos **   -all-   0.505 % 2       -none- 9 Rorippa sessiliflora Rorippa sessiliflora **   Rorippa sessiliflora **   Rorippa sessiliflora **   Rorippa sessiliflora **   Rorippa sessiliflora **   Rorippa sessiliflora **   Rorippa sessiliflora **   Rorippa sessiliflora **   -all-   0.505 % 2       -none- 10 Salix nigra Salix nigra **   Salix nigra **   Salix nigra **   Salix nigra **   Salix nigra **   Salix nigra **   Salix nigra **   Salix nigra **   -all-   0.505 % 2       -none- 11 Rotala ramosior Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   -all-   0.505 % 2       -none- 12 Eragrostis cilianensis Eragrostis cilianensis **   Eragrostis cilianensis **   Eragrostis cilianensis **   Eragrostis cilianensis **   Eragrostis cilianensis **   Eragrostis cilianensis **   Eragrostis cilianensis **   Eragrostis cilianensis **   -all-   0.505 % 2       -none- 13 Euphorbia humistrata Euphorbia humistrata **   Euphorbia humistrata **   Euphorbia humistrata **   Euphorbia humistrata **   Euphorbia humistrata **   Euphorbia humistrata **   Euphorbia humistrata **   Euphorbia humistrata **   -all-   0.505 % 2       -none- 14 Calystegia sepium Calystegia sepium **   Calystegia sepium **   Calystegia sepium **   Calystegia sepium **   Calystegia sepium **   Calystegia sepium **   Calystegia sepium **   Calystegia sepium **   -all-   0.505 % 2       -none- 15 Samolus parviflorus Samolus parviflorus **   Samolus parviflorus **   Samolus parviflorus **   Samolus parviflorus **   Samolus parviflorus **   Samolus parviflorus **   Samolus parviflorus **   Samolus parviflorus **   -all-   0.505 % 2       -none- 16 Cyperus strigosus Cyperus strigosus **   Cyperus strigosus **   Cyperus strigosus **   Cyperus strigosus **   Cyperus strigosus **   Cyperus strigosus **   Cyperus strigosus **   Cyperus strigosus **   -all-   0.505 % 2       -none- 17 Cyperus squarrosus Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   -all-   0.505 % 2       -none- 18 Mimulus alatus Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   -all-   0.505 % 2       -none- 19 Cyperus bipartitus Cyperus bipartitus **   Cyperus bipartitus **   Cyperus bipartitus **   Cyperus bipartitus **   Cyperus bipartitus **   Cyperus bipartitus **   Cyperus bipartitus **   Cyperus bipartitus **   -all-   0.505 % 2       -none- 20 Penthorum sedoides Penthorum sedoides **   Penthorum sedoides **   Penthorum sedoides **   Penthorum sedoides **   Penthorum sedoides **   Penthorum sedoides **   Penthorum sedoides **   Penthorum sedoides **   -all-   0.505 % 2       -none- 21 Persicaria longiseta Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   -all-   0.505 % 2       -none- 22 Eclipta prostrata Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   -all-   0.505 % 2       -none- 23 Barbarea vulgaris Barbarea vulgaris **   Barbarea vulgaris **   Barbarea vulgaris **   Barbarea vulgaris **   Barbarea vulgaris **   Barbarea vulgaris **   Barbarea vulgaris **   Barbarea vulgaris **   -all-   0.505 % 2       -none- 24 Panicum dichotomiflorum var. dichotomiflorum Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   -all-   0.505 % 2       -none- 25 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-   0.505 % 2       -none- 26 Rorippa palustris ssp. palustris Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   Rorippa palustris ssp. palustris **   -all-   0.505 % 2       -none- 27 Muhlenbergia schreberi Muhlenbergia schreberi **   Muhlenbergia schreberi **   Muhlenbergia schreberi **   Muhlenbergia schreberi **   Muhlenbergia schreberi **   Muhlenbergia schreberi **   Muhlenbergia schreberi **   Muhlenbergia schreberi **   -all-   0.505 % 2       -none- 28 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   0.505 % 2       -none- 29 Mollugo verticillata Mollugo verticillata **   Mollugo verticillata **   Mollugo verticillata **   Mollugo verticillata **   Mollugo verticillata **   Mollugo verticillata **   Mollugo verticillata **   Mollugo verticillata **   -all-   0.505 % 2       -none- 30 Artemisia annua Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   -all-   0.505 % 2       -none- 31 Myosoton aquaticum Myosoton aquaticum **   Myosoton aquaticum **   Myosoton aquaticum **   Myosoton aquaticum **   Myosoton aquaticum **   Myosoton aquaticum **   Myosoton aquaticum **   Myosoton aquaticum **   -all-   0.505 % 2       -none- 32 Ludwigia peploides var. glabrescens Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   Ludwigia peploides var. glabrescens **   -all-   0.505 % 2       -none- 33 Eragrostis frankii Eragrostis frankii **   Eragrostis frankii **   Eragrostis frankii **   Eragrostis frankii **   Eragrostis frankii **   Eragrostis frankii **   Eragrostis frankii **   Eragrostis frankii **   -all-   0.505 % 2       -none- 34 Paspalum fluitans Paspalum fluitans **   Paspalum fluitans **   Paspalum fluitans **   Paspalum fluitans **   Paspalum fluitans **   Paspalum fluitans **   Paspalum fluitans **   Paspalum fluitans **   -all-   0.505 % 2       -none- 35 Lycopus americanus Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   -all-   0.505 % 2       -none- 36 Portulaca oleracea Portulaca oleracea **   Portulaca oleracea **   Portulaca oleracea **   Portulaca oleracea **   Portulaca oleracea **   Portulaca oleracea **   Portulaca oleracea **   Portulaca oleracea **   -all-   0.505 % 2       -none- 37 Ranunculus sceleratus var. sceleratus Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   Ranunculus sceleratus var. sceleratus **   -all-   0.505 % 2       -none- 38 Acer saccharinum Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   -all-   0.505 % 2       -none- 39 Amaranthus spinosus Amaranthus spinosus **   Amaranthus spinosus **   Amaranthus spinosus **   Amaranthus spinosus **   Amaranthus spinosus **   Amaranthus spinosus **   Amaranthus spinosus **   Amaranthus spinosus **   -all-   0.505 % 2       -none- 40 Ammannia coccinea Ammannia coccinea **   Ammannia coccinea **   Ammannia coccinea **   Ammannia coccinea **   Ammannia coccinea **   Ammannia coccinea **   Ammannia coccinea **   Ammannia coccinea **   -all-   0.505 % 2       -none- 41 Apocynum sibiricum Apocynum sibiricum **   Apocynum sibiricum **   Apocynum sibiricum **   Apocynum sibiricum **   Apocynum sibiricum **   Apocynum sibiricum **   Apocynum sibiricum **   Apocynum sibiricum **   -all-   0.505 % 2       -none- 42 Solanum ptychanthum Solanum ptychanthum **   Solanum ptychanthum **   Solanum ptychanthum **   Solanum ptychanthum **   Solanum ptychanthum **   Solanum ptychanthum **   Solanum ptychanthum **   Solanum ptychanthum **   -all-   0.05 % 1       -none- 43 Verbascum thapsus Verbascum thapsus **   Verbascum thapsus **   Verbascum thapsus **   Verbascum thapsus **   Verbascum thapsus **   Verbascum thapsus **   Verbascum thapsus **   Verbascum thapsus **   -all-   0.05 % 1       -none- 44 Hibiscus laevis Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   -all-   0.05 % 1       -none- 45 Bidens cernua Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   -all-   0.05 % 1       -none- 46 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-   0.05 % 1       -none- 47 Persicaria pensylvanica Persicaria pensylvanica **   Persicaria pensylvanica **   Persicaria pensylvanica **   Persicaria pensylvanica **   Persicaria pensylvanica **   Persicaria pensylvanica **   Persicaria pensylvanica **   Persicaria pensylvanica **   -all-   0.05 % 1       -none- 48 Eupatorium perfoliatum Eupatorium perfoliatum **   Eupatorium perfoliatum **   Eupatorium perfoliatum **   Eupatorium perfoliatum **   Eupatorium perfoliatum **   Eupatorium perfoliatum **   Eupatorium perfoliatum **   Eupatorium perfoliatum **   -all-   0.05 % 1       -none- 49 Acalypha rhomboidea Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   -all-   0.05 % 1       -none- 50 Platanus occidentalis Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   -all-   0.05 % 1       -none- 51 Solidago gigantea Solidago gigantea **   Solidago gigantea **   Solidago gigantea **   Solidago gigantea **   Solidago gigantea **   Solidago gigantea **   Solidago gigantea **   Solidago gigantea **   -all-   0.05 % 1       -none- 52 Urtica dioica Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   Urtica dioica **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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