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DOCUMENTATION_FORMAT: PLANT
SAMPLE_ID: Lythrum lineare near CRMS326v59
PLANT_TYPE: Wetland forb, perennial herb
PLANT: Wand lythrum
LATIN_NAME: Lythrum lineare L.
COLLECTION_LOCALITY: Coastwide Reference Monitoring System (CRMS) site 326 subplot v59. CRMS326v59 is located in southern Louisiana, approximately 127 kilometers southwest of New Orleans, Louisiana, in the western part of the Terrebonne hydrologic basin on the coast of the Gulf of Mexico.
COLLECTION_LATITUDE: 29.273388 deg. N
COLLECTION_LONGITUDE: 91.073663 deg. W
DATUM: NAD83
ORIGINAL_DONOR: Raymond F. Kokaly, USGS
SAMPLE_DESCRIPTION:
This spectrum is the average reflectance of 8 field measurements of green leaves and stems of wand lythrum (Lythrum lineare).
The measurements were made on June 7, 2010.
These spectra were collected using an ASD Field Spectrometer 3 (FS3) in reflectance mode, relative to a Spectralon reference panel.
Plant stems and leaves were bunched together and the fiber optic was held at a distance of 4 cm. During the measurement process, spectra were
recorded as the fiber optic was moved along the lengths for four different bundles.
An average spectrum was computed from the recorded measurements.
The average spectrum was converted to absolute reflectance by multiplying by the reflectance spectrum of the Spectralon reference panel.
Site Classification
The area has been predominantly classified as brackish marsh (see http://lacoast.gov/crms2/home.aspx).
General Site Description
The plot is located in southern Louisiana, approximately 127 kilometers southwest of New Orleans, Louisiana.
It is in the western part of the Terrebonne hydrologic basin on the coast of the Gulf of Mexico.
For additional information on the CRMS site see http://lacoast.gov/crms2/home.aspx
Project Background
This site was measured as part of joint work between the USGS Denver Spectroscopy Laboratory and the
Coastal Restoration Assessment Branch of the USGS National Wetlands Research Center, Baton Rouge.
This spectrum was used in:
Kokaly, R.F., Couvillion, B.R., Holloway, J.M., Roberts, D.A., Ustin, S.L., Peterson, S.H., Khanna, S., and Piazza, S.C., 2013,
Spectroscopic remote sensing of the distribution and persistence of oil from the Deepwater Horizon spill in Barataria Bay marshes,
Remote Sensing of Environment, Volume 129, Pages 210-230. http://dx.doi.org/10.1016/j.rse.2012.10.028
IMAGE_OF_SAMPLE: in the site layout diagram, the subplot location is indicated by the matching number within the parentheses
END_SAMPLE_DESCRIPTION.
COMPOSITIONAL_ANALYSIS_TYPE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
TRACE_ELEMENT_ANALYSIS:
TRACE_ELEMENT_DISCUSSION:
END_TRACE_ELEMENT_DISCUSSION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns