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SAMO2915
» Citation URL: http://vegbank.org/cite/urn:lsid:vegtwig.vegbank.org:observation:4930-{0FE7EEBC-E305-4374-B3BC-FC3EA58F50CD}
» Citing info
Plot ID Fields: 
Author Plot Code ? SAMO2915
Author Observation Code ? SAMO2915
Original Data Location ? SAMO NPS Headquarters, 401 West Hillcrest Drive, Thousand Oaks, CA
Location Fields: MAP: Google | Yahoo | TopoZone | MapQuest
Confidentiality Status ? exact location
Latitude ? 34.120245984592 º
Longitude ? -118.655959294693 º
Author Location ? Cold Creek - Secret Valley
State or Province ? California
Country ? United States
Named Places
region|state|province: California
area|country|territory: United States
Layout Fields: 
Shape ? Square
Area ? 100
Placement Method ? Representative
Permanence ? not permanent
Layout Narrative ? Length: 10; Width: 10
Environment Fields: 
Stand Size ? large
Elevation ? 483 m
Slope Aspect ? 140 º
Slope Gradient ? 17 º
Topographic Position ? Middle 1/3 of slope
Surficial Deposits ? Sedimentary (type unknown)
Rock Type ? Sedimentary (type unknown)
Landscape Narrative ? Upland; Description of the plot in relation to the rest of the stand: Very good. Uniform environment and species composition. Part of polygon has more Brassica nigra with Avena fatua rather than the Centaurea melitensis.
Percent Rock / Gravel ? 3 %
Percent Litter ? 60 %
Percent Bare Soil ? 37 %
Methods Fields: 
Observation Start Date ? 30-Apr-2003 ± exact
Date Accuracy ? exact
Project ? SAMO (CNPS Rapid Assessment/Releve 2002)
Cover Method ? Percentage (%)
Stratum Method ? CA Native Plant Society (CNPS)
Taxon Observation Area ? 100
Cover Dispersion ? Entire
Overall Taxon Cover Values are Automatically Calculated? ? no
Stem Observation Area ? 100
Plot Quality Fields: 
Plot Validation Level ? (2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields: 
Field Height ? 0.25 m
Tree Cover ? 0 %
Shrub Cover ? 0 %
Field Cover ? 32 %
Nonvascular Cover ? 0 %
Misc Fields: 
Observation Narrative ? original plot ID: rap2915rlv, Vegetation type confidence High;
Taxa occurring on this plot-observation
Change plant label:
Change Strata Shown:
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 Brassica nigra Brassica nigra (L.) W.D.J. Koch Brassica nigra Brassica nigra **   BRNI Brassica nigra (L.) W.D.J. Koch Brassica nigra Brassica nigra **   BRNI Medium
3 %
        -none-
2 Sonchus asper Sonchus asper (L.) Hill Sonchus asper Sonchus asper **   SOAS Sonchus asper (L.) Hill Sonchus asper Sonchus asper **   SOAS Medium
0.2 %
        -none-
3 Avena fatua Avena fatua L. Avena fatua Avena fatua **   AVFA Avena fatua L. Avena fatua Avena fatua **   AVFA Medium
0.2 %
        -none-
4 Centaurea melitensis Centaurea melitensis L. Centaurea melitensis Centaurea melitensis **   CEME2 Centaurea melitensis L. Centaurea melitensis Centaurea melitensis **   CEME2 Low
28 %
        -none-
5 Bromus madritensis Bromus madritensis L. Bromus madritensis Bromus madritensis **   BRMA3 Bromus madritensis L. Bromus madritensis Bromus madritensis **   BRMA3 Low
1 %
        -none-
6 Erodium cicutarium Erodium cicutarium (L.) L'Hér. ex Aiton Erodium cicutarium Erodium cicutarium **   ERCI6 Erodium cicutarium (L.) L'Hér. ex Aiton Erodium cicutarium Erodium cicutarium **   ERCI6 Low
0.2 %
        -none-
7 Galium aparine Galium aparine L. Galium aparine Galium aparine **   GAAP2 Galium aparine L. Galium aparine Galium aparine **   GAAP2 Low
0.2 %
        -none-
8 Medicago polymorpha Medicago polymorpha L. Medicago polymorpha Medicago polymorpha **   MEPO3 Medicago polymorpha L. Medicago polymorpha Medicago polymorpha **   MEPO3 Low
0.2 %
        -none-
9 Bromus diandrus Bromus diandrus Roth Bromus diandrus Bromus diandrus **   BRDI3 Bromus diandrus Roth Bromus diandrus Bromus diandrus **   BRDI3 Low
0.2 %
        -none-
10 Dichelostemma capitatum Dichelostemma capitatum (Benth.) Alph. Wood Dichelostemma capitatum Dichelostemma capitatum **   DICA14 Dichelostemma capitatum (Benth.) Alph. Wood Dichelostemma capitatum Dichelostemma capitatum **   DICA14 Low
0.2 %
        -none-
11 Malacothrix saxatilis Malacothrix saxatilis (Nutt.) Torr. & A. Gray Malacothrix saxatilis Malacothrix saxatilis **   MASA2 Malacothrix saxatilis (Nutt.) Torr. & A. Gray Malacothrix saxatilis Malacothrix saxatilis **   MASA2 Low
0.2 %
        -none-
12 Bromus hordeaceus Bromus hordeaceus L. Bromus hordeaceus Bromus hordeaceus **   BRHO2 Bromus hordeaceus L. Bromus hordeaceus Bromus hordeaceus **   BRHO2 Low
0.2 %
        -none-
This table is SORTABLE. Click the headers to sort ascending and descending.

Stratum Definitions:
Stratum Type ?Stratum Base ?Stratum Height ?Stratum Cover ?
conifer tree     0 %
hardwood tree     0 %
Medium 0.5 m 5 m  
Low 0 m 0.5 m  
Low-Mid Shrub      
Low Tree-Tall Shrub      
This table is SORTABLE. Click the headers to sort ascending and descending.
Observation Contributors:
Party ?Role ?
Anderson, James Field assistant
McGraw, Mike Field assistant
Community Classification:
More Classification Start Date ? Community AssignmentsContributors
Details 01-Jun-2004
Community Concept ?Class Fit ?Class Confidence ?Community Authority Reference ?Typal ?
Brassica nigra - Centaurea melitensis Herbaceous Vegetation     Keeler-Wolf and Evens 2006 no
Keeler-Wolf, Todd
Evens, Julie


Disturbance Data:
Disturbance Type ?Disturbance Intensity ?Disturbance Comment ?
Competition from exotics High Competition from exotics


User Defined Values
No User Defined Data for this plot