Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Volumetric soil water content, measured both by time-domain reflectometry and by thermogravimetric anaysis, for 120 point locations within limestone cedar glades at Stones River National Battlefield near Murfreesboro, Tennessee

Metadata Updated: October 29, 2023

This dataset contains data collected within limestone cedar glades at Stones River National Battlefield (STRI) near Murfreesboro, Tennessee. This dataset contains measurements of volumetric soil water content at certain quadrat locations (points) within 12 selected cedar glades. For points at which soil water content was measured by thermogravimetric analysis (oven-drying), which are points indicated by the code OD in the field SWC_Meth, the soil-water-content values contained in this dataset are identical to those for the matching dates and points in the file STRI_Glades_Soil_Water_Content_OD.shp. For details on the procedure used to calculate volumetric soil water content using the thermogravimetric method, see the description paragraph in the metadata section of the dataset STRI_Glades_Soil_Water_Content_OD.shp. For points at which soil water content was measured by portable time-domain reflectometry (points for which the field SWC_Meth has the code TDR), the values in this dataset represent the oven-drying equivalent of the time-domain-reflectometry-measured soil water content values in the file STRI_Glades_Soil_Water_Content_TDR.shp, calculated using a specially-formulated calibration curve (described below). For details on the procedure used to measure volumetric soil water content using the portable time-domain-reflectometry method, see the description paragraph in the metadata section of the dataset STRI_Glades_Soil_Water_Content_TDR.shp. To enable comparisons of soil water content between points which were measured using different methods (time-domain-reflectometry at some points and oven-drying at others), a calibration curve was established between the two methods. Forty-eight paired measurements used to establish the calibration curve were obtained on four dates: November 10, 2011; November 15, 2011; January 15, 2013; and May 29, 2013. Calibration measurements were obtained separately, and on separate days, from routine field visits. However, the methods employed to obtain calibration measurements by time-domain-reflectometry and thermogravimentric methods were identical to those described in the metadata sections of STRI_Glades_Soil_Water_Content_TDR.shp and STRI_Glades_Soil_Water_Content_OD.shp, respectively. Soil-water-content measurements by both methods were natural-log transformed prior to fitting a linear calibration curve. The R-squared value for the calibration curve was 0.9547 and the equation established between the two methods, which was subsequently used to convert time-domain-reflectometry measurements to thermogravimetric equivalents, was: Ln (SWC_OD) = 1.6881 (Ln (SWC_TDR)) – 2.7187, where SWC_TDR is the volumetric soil water content measured by time-domain-reflectometry (expressed as volumetric percent) and SWC_OD is the volumetric soil water content calculated from bulk density and gravimetric soil water content as measured by oven drying (also expressed as volumetric percent).Detailed descriptions of experimental design, field data collection procedures, laboratory procedures, and data analysis are presented in Cartwright (2014).References:Cartwright, J. (2014). Soil ecology of a rock outcrop ecosystem: abiotic stresses, soil respiration, and microbial community profiles in limestone cedar glades. Ph.D. dissertation, Tennessee State University.Cofer, M., Walck, J., and Hidayati, S. (2008). Species richness and exotic species invasion in Middle Tennessee cedar glades in relation to abiotic and biotic factors. The Journal of the Torrey Botanical Society, 135(4), 540–553.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/0281a56d561b383c6e1d16e58a2b72e7
Identifier USGS:55afd0f4e4b09a3b01b51f74
Data Last Modified 20200821
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 8bacbea2-1966-49ee-a35f-17bafd87479b
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -86.439035,35.870747,-86.433061,35.874084
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash cc8373d08da7ff70571803c61fc3d67ba5583e996b35760c51a155b17c6dec7b
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -86.439035, 35.870747, -86.439035, 35.874084, -86.433061, 35.874084, -86.433061, 35.870747, -86.439035, 35.870747}

Didn't find what you're looking for? Suggest a dataset here.

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov