Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

GIS-GCES-1401

Research Theme:

Geospatial Analysis (Directed Study)

Contributors:

Christine M. Hladik, Merryl Alber, Kristen Anstead, Nick Scoville

Title:

June - December 2009 RTK survey of salt marsh plant ground elevations to assess the accuracy of a LIDAR-derived digital elevation model.

Abstract:

Real time kinematic (RTK) GPS survey of ground elevations for six plant species (Spartina alterniflora, Juncus roemerianus, Batis maritima, Distichlis spicata, Salicornia virginica and Borrichia frutescens) and two non-vegetated cover classes (salt pan and intertidal mud) was carried out from June to December 2009 to assess the accuracy of a LIDAR-derived digital elevation model. In total, 1389 ground control points (GCP) were collected for the Duplin River (Sapelo Island) and Blackbeard Creek (Blackbeard Island) salt marshes.

DOI:

10.6073/pasta/819935a2f499612fcc6c749ce55920e4

Key Words:

elevation, global positioning system, plant communities, plant species composition, Real Time Kinematic, RTK

LTER Core Area:

Primary Production

Research Themes:

Geospatial Analysis, Plant Ecology

Study Period:

06-Jun-2009 to 12-Jul-2009

Study Sites:

GCE-DP -- Duplin River, Georgia, USA

» Download Geographic Coverage: Google Earth

Species References:

Batis maritima, Borrichia frutescens, Distichlis spicata, Juncus roemerianus, Salicornia virginica, Spartina alterniflora

Data References:

GIS-GCES-1401a (RTK elevation survey data), GIS-GCES-1401b (LIDAR data), GIS-GCES-1401c (LIDAR data), GIS-GCES-1401d (Digital elevation model), GIS-GCES-1401e (Hyperspectral imagery), GIS-GCES-1401f (Hyperspectral imagery), GIS-GCES-1401g (Hyperspectral imagery classifications), GIS-GCES-1401h (NDVI images from hyperspectral imagery classifications)

Publications:

Schalles, J.F., Hladik, C.M., Nealy, N., Miklesh, D.M., Meile, C., Lynn, T. and O'Donnell, J. Presentation: A 35 year spatial-temporal analysis of serious Spartina alterniflora biomass declines in coastal Georgia. Impact of multiple disturbances on coastal ecosystem structure and function. Coastal and Estuarine Research Federation Biennial Meeting, November 4, 2019, Mobile, Alabama.

Hladik, C.M. and Alber, M. 2012. Accuracy assessment and correction of a LIDAR-derived salt marsh digital elevation model. Remote Sensing of the Environment. 121:234-235. (DOI: 10.1016/j.rse.2012.01.018)

Hladik, C.M., Schalles, J.F. and Alber, M. 2013. Salt marsh elevation and habitat mapping using hyperspectral and LIDAR data. Remote Sensing of the Environment. 139:318 - 330. (DOI: 10.1016/j.rse.2013.08.003)

O'Connell, J.L., Mishra, D., Alber, M. and Byrd, K.B. 2021. BERM: A belowground ecosystem resilience model for estimating Spartina alterniflora belowground biomass. New Phytologist. (DOI: 10.1111/nph.17607)

Downloads:

GIS Raster Data: GIS-GCES-1401_shp (Zip file containing shapefile of 2009 RTK)

Access: Public (released 01-Sep-2013)

Metadata: XML (Ecological Metadata Language)

Data Formats: Zip archive [103 KB]

Data Table: GIS-GCES-1401_table (Main data table for data set GIS-GCES-1401, 2438 records)

Access: Public (released 01-Sep-2013)

Metadata: Text (ESA FLED), XML (Ecological Metadata Language)

Data Formats: Spreadsheet (CSV) [275.40kb], Text File [227.06kb], MATLAB (GCE Toolbox) [898.86kb], MATLAB (Variables) [876.55kb], Text Report [253.50kb]

Column List:(display)

Column	Name	Units	Type	Description
1	ID	None	integer	RTK sampling point identification number
2	Date	dd-mmm-yyyy	string	Calendar month, day, and year
3	Time	hh:mm	string	hour and minutes (24 hour)
4	UTM_Zone	None	string	UTM Zone
5	Flag_UTM_Zone	none	string	QA/QC flags for UTM Zone (flagging criteria, where "x" is UTM_Zone: )
6	UTM_Easting	m	floating-point	UTM easting coordinates
7	UTM_Northing	m	floating-point	UTM northing coordinates
8	RTK_Elevation	m	floating-point	surveyed RTK ground elevation
9	Flag_RTK_Elevation	none	string	QA/QC flags for surveyed RTK ground elevation (flagging criteria, where "x" is RTK_Elevation: x<-0.67="Q", x>1.49="Q")
10	Dominant_Plant	None	string	Dominant plant species present at surveyed location
11	Horizontal_Precision	m	floating-point	Horizontal Precision of RTK Northing and Easting
12	Flag_Horizontal_Precision	none	string	QA/QC flags for Horizontal Precision of RTK Northing and Easting (flagging criteria, where "x" is Horizontal_Precision: x<0.006="Q", x>0.077="Q")
13	Vertical_Precision	m	floating-point	Vertical precision of RTK elevation
14	Flag_Vertical_Precision	none	string	QA/QC flags for Vertical precision of RTK elevation (flagging criteria, where "x" is Vertical_Precision: x<0.008="Q", x>0.118="Q")
15	RMS	m	floating-point	Root mean squared error of RTK elevation (1 sigma)
16	Flag_RMS	none	string	QA/QC flags for Root mean squared error of RTK elevation (1 sigma) (flagging criteria, where "x" is RMS: x<0="Q", x>0.02="Q")
17	Max_HDOP	None	floating-point	Maximum horizontal dilution of precision
18	Flag_Max_HDOP	none	string	QA/QC flags for Maximum horizontal dilution of precision (flagging criteria, where "x" is Max_HDOP: x<0.8="Q", x>3.2="Q")
19	Max_VDOP	None	floating-point	Maximum vertical dilution of precision
20	Flag_Max_VDOP	none	string	QA/QC flags for Maximum vertical dilution of precision (flagging criteria, where "x" is Max_VDOP: x<1.1="Q", x>3="Q")
21	Min_Number_Satellites	None	integer	Minumum number of satellites
22	Flag_Min_Number_Satellites	none	string	QA/QC flags for Minumum number of satellites (flagging criteria, where "x" is Min_Number_Satellites: x<4="Q", x>11="Q")

Statistics:

Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS

Citation:

Hladik, Christine M. 2013. June - December 2009 RTK survey of salt marsh plant ground elevations to assess the accuracy of a LIDAR-derived digital elevation model. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/819935a2f499612fcc6c749ce55920e4

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