085-GWMP-0009
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:14118-{43272111-D6CB-4A3C-B63F-A172A10AE9E6} » Citing info
Plot ID Fields:
Author Plot Code	085-GWMP-0009
Author Observation Code	085-GWMP-0009
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: Arlington region|state|province: Virginia
Layout Fields:
DSG Polygon	4 x 25 m
Area	100 m²
Permanence	not permanent
Environment Fields:
Elevation	38 m
Slope Aspect	(n/a, flat) º
Slope Gradient	1 º
Topographic Position	plain/level/bottom
Landform	channel shelf/stream margin/bar
Hydrologic Regime	non-tidal - seasonally flooded
Soil Moisture Regime	hygric
Soil Drainage	poorly drained
Methods Fields:
Observation Start Date	02-Sep-2004
Observation End Date	02-Sep-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:
Shrub Height	1.5 m
Field Height	1 m
Shrub Cover	3 %
Field Cover	55 %
Nonvascular Cover	2 %
Misc Fields:
Observation Narrative	A long, narrow plot configuration was used in an attempt to capture vegetation of a low, bouldery deposition bar along the shore of the Potomac River below Chain Bridge. Although greatly dominated by Justicia americana, quantitative analysis suggests that this plot is compositionally heterogeneous, having far greater species richness than other Justicia-dominated stands along the Potomac. A rapid gradient from an adjacent, well-drained sandy bar to the sampled, seasonally flooded boulder bar is probably responsible for this, with many of the sand-bar species "spilling over" into the plot. Much of the plot area is apparently submersed for long periods of the year, and is also subject to occasional scouring floods during periods of low-water exposure.

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 Justicia americana Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   -all-   37.5 % 7       -none- 2 Salix caroliniana Salix caroliniana **   Salix caroliniana **   Salix caroliniana **   Salix caroliniana **   Salix caroliniana **   Salix caroliniana **   Salix caroliniana **   Salix caroliniana **   -all-   3.5 % 4       -none- 3 Schoenoplectus pungens var. pungens Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   -all-   1.5 % 3       -none- 4 Carex emoryi Carex emoryi **   Carex emoryi **   Carex emoryi **   Carex emoryi **   Carex emoryi **   Carex emoryi **   Carex emoryi **   Carex emoryi **   -all-   1.5 % 3       -none- 5 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-   1.5 % 3       -none- 6 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-   1.5 % 3       -none- 7 Leersia oryzoides Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   -all-   1.5 % 3       -none- 8 Ludwigia palustris Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   -all-   0.505 % 2       -none- 9 Conoclinium coelestinum Conoclinium coelestinum **   Conoclinium coelestinum **   Conoclinium coelestinum **   Conoclinium coelestinum **   Conoclinium coelestinum **   Conoclinium coelestinum **   Conoclinium coelestinum **   Conoclinium coelestinum **   -all-   0.505 % 2       -none- 10 Bidens frondosa Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   Bidens frondosa **   -all-   0.505 % 2       -none- 11 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   0.505 % 2       -none- 12 Persicaria longiseta Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   -all-   0.505 % 2       -none- 13 Eupatorium serotinum Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   -all-   0.505 % 2       -none- 14 Coleataenia rigidula ssp. rigidula Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   Coleataenia rigidula ssp. rigidula **   -all-   0.505 % 2       -none- 15 Acalypha rhomboidea Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   -all-   0.505 % 2       -none- 16 Phyla lanceolata Phyla lanceolata **   Phyla lanceolata **   Phyla lanceolata **   Phyla lanceolata **   Phyla lanceolata **   Phyla lanceolata **   Phyla lanceolata **   Phyla lanceolata **   -all-   0.505 % 2       -none- 17 Platanus occidentalis Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   -all-   0.505 % 2       -none- 18 Echinochloa muricata Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   -all-   0.505 % 2       -none- 19 Arthraxon hispidus var. hispidus Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   Arthraxon hispidus var. hispidus **   -all-   0.505 % 2       -none- 20 Sagittaria latifolia var. latifolia Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   Sagittaria latifolia var. latifolia **   -all-   0.505 % 2       -none- 21 Heteranthera dubia Heteranthera dubia **   Heteranthera dubia **   Heteranthera dubia **   Heteranthera dubia **   Heteranthera dubia **   Heteranthera dubia **   Heteranthera dubia **   Heteranthera dubia **   -all-   0.505 % 2       -none- 22 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-   0.505 % 2       -none- 23 Mimulus alatus Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   Mimulus alatus **   -all-   0.505 % 2       -none- 24 Rotala ramosior Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   Rotala ramosior **   -all-   0.505 % 2       -none- 25 Eleocharis tenuis var. tenuis Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   Eleocharis tenuis var. tenuis **   -all-   0.505 % 2       -none- 26 Sicyos angulatus Sicyos angulatus **   Sicyos angulatus **   Sicyos angulatus **   Sicyos angulatus **   Sicyos angulatus **   Sicyos angulatus **   Sicyos angulatus **   Sicyos angulatus **   -all-   0.505 % 2       -none- 27 Eutrochium fistulosum Eutrochium fistulosum **   Eutrochium fistulosum **   Eutrochium fistulosum **   Eutrochium fistulosum **   Eutrochium fistulosum **   Eutrochium fistulosum **   Eutrochium fistulosum **   Eutrochium fistulosum **   -all-   0.505 % 2       -none- 28 Acer saccharinum Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   Acer saccharinum **   -all-   0.505 % 2       -none- 29 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-   0.505 % 2       -none- 30 Artemisia annua Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   -all-   0.05 % 1       -none- 31 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- 32 Mazus pumilus Mazus pumilus **   Mazus pumilus **   Mazus pumilus **   Mazus pumilus **   Mazus pumilus **   Mazus pumilus **   Mazus pumilus **   Mazus pumilus **   -all-   0.05 % 1       -none- 33 Bidens comosa Bidens comosa **   Bidens comosa **   Bidens comosa **   Bidens comosa **   Bidens comosa **   Bidens comosa **   Bidens comosa **   Bidens comosa **   -all-   0.05 % 1       -none- 34 Persicaria lapathifolia Persicaria lapathifolia **   Persicaria lapathifolia **   Persicaria lapathifolia **   Persicaria lapathifolia **   Persicaria lapathifolia **   Persicaria lapathifolia **   Persicaria lapathifolia **   Persicaria lapathifolia **   -all-   0.05 % 1       -none- 35 Populus deltoides var. deltoides Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   Populus deltoides var. deltoides **   -all-   0.05 % 1       -none- 36 Ludwigia alternifolia Ludwigia alternifolia **   Ludwigia alternifolia **   Ludwigia alternifolia **   Ludwigia alternifolia **   Ludwigia alternifolia **   Ludwigia alternifolia **   Ludwigia alternifolia **   Ludwigia alternifolia **   -all-   0.05 % 1       -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-   0.05 % 1       -none- 38 Pilea pumila Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   -all-   0.05 % 1       -none- 39 Bidens cernua Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   Bidens cernua **   -all-   0.05 % 1       -none- 40 Alisma subcordatum Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   -all-   0.05 % 1       -none- 41 Cyperus squarrosus Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   Cyperus squarrosus **   -all-   0.05 % 1       -none- 42 Rumex altissimus Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   -all-   0.05 % 1       -none- 43 Symphyotrichum pilosum var. pringlei Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   Symphyotrichum pilosum var. pringlei **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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