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Long-Term Agroecosystem Research Network regions, 2018 version

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posted on 2023-12-18, 18:37 authored by Alisa W. Coffin, Vivienne Sclater, Chandra Holifield Collins, David Archer, Gerardo Armendariz, Dan Arthur, David Augustine, Claire Baffaut, Alycia Bean, Brandon Bestlemeyer, Dawn M. Browning, Bryan Carlson, Pat Clark, Justin Derner, Sarah Goslee, David Huggins, David James, Nicole Kaplan, Kevin W. King, Peter Kleinman, Guillermo Ponce-Campos, Lauren Porensky, Phil Robertson, E. John Sadler, Doug Smith, Sheri Spiegal, Jean Steiner, Timothy C. Strickland, Bruce Vandenberg, Steven Van Vactor, Brian Wienhold, Lindsey Yasarer

The Long-Term Agroecosystem Research Network, consisting of 18+ research locations, is conducting research on the sustainable intensification of agroecosystems. To enable coordinated network level research, a spatial framework is required to facilitate analysis. However, no suitable spatial framework currently exists to meet the needs for the LTAR Network. To develop a framework for analysis the LTAR Network initiated the Regionalization Project. Goals also included providing a standardized spatial footprint for LTAR cross-site investigations, estimating the confidence with which results from research plots and fields could reasonably be extrapolated to "represented regions", informing decisions about where additional research sites should be prioritized and facilitating public outreach of the LTAR Network. To address these goals a workshop was held in 2018 resulting in the production of three sets of regional boundaries in a geographic information system (GIS). These GIS datasets are intended to be used for mapping the network and for summarizing spatial data relevant to domains of sustainable intensification corresponding with agricultural production, environmental impact, and rural prosperity. This resulted in a geodatabase of three new maps describing regional boundaries for the LTAR Network titled "Long-Term Agroecosystem Research Network regions, 2018 version", archived in the USDA National Agricultural Library's Ag Data Commons repository.

Resources in this dataset:

  • Resource Title: LTAR_Regions_v2018.

    File Name:

    Resource Description: Geodatabase of the regions pertaining to the Long-Term Agroecosystem Research Network. There are three data layers describing regions associated with indicators of sustainable intensification corresponding with agricultural production (LTAR_Production_v2018), environmental impacts (LTAR_Environment_v2018), and rural prosperity (LTAR_RuralProsp_v2018). These date were produced by the LTAR Regionalization Project as an outcome from the 2018 LTAR Regionalization Project workshop held in March 2018, Tifton, GA.

    Resource Software Recommended: ArcGIS Pro,url:




Data contact name

Coffin, Alisa

Data contact email


Ag Data Commons

Intended use

The data layers within this geodatabase are intended to be used to represent the current status of regions describing the Long-Term Agroecosystem Research Network. They are intended for mapping and for use with geospatial analysis for characterizing LTAR locations.

Use limitations

The data layers were prepared using expert opinion to delineate their boundaries. Use of these datasets for modeling applications should, therefore include validation methods to verify conclusions about the extrapolation of model results beyond the extent of measurement areas. These data are not appropriate for local scales of analysis.

Temporal Extent Start Date



  • Not specified

Geographic Coverage


Geographic location - description

Conterminous United States of America, CONUS

ISO Topic Category

  • boundaries
  • environment
  • farming
  • society

Ag Data Commons Group

  • Central Mississippi River Basin
  • Kellogg Biological Station
  • Walnut Gulch Experimental Watershed
  • Lower Mississippi River Basin
  • Southern Plains
  • Jornada Experimental Range
  • Upper Mississippi River Basin
  • Great Basin
  • Upper Chesapeake Bay
  • Long-Term Agroecosystem Research
  • Central Plains Experimental Range
  • Texas Gulf
  • Eastern Corn Belt
  • Gulf Atlantic Coastal Plain
  • Platte River - High Plains Aquifer
  • Northern Plains
  • Archbold - University of Florida
  • R.J. Cook Agronomy Farm
  • Lower Chesapeake Bay

National Agricultural Library Thesaurus terms

Long-Term Agroecosystem Research Network; sustainable agricultural intensification; agroecosystems; outreach; geographic information systems; data collection; spatial data; environmental impact

OMB Bureau Code

  • 005:18 - Agricultural Research Service

OMB Program Code

  • 005:040 - National Research

ARS National Program Number

  • 211
  • 216

Pending citation

  • No

Public Access Level

  • Public

Preferred dataset citation

Coffin, Alisa W.; Sclater, Vivienne; Holifield Collins, Chandra; Archer, David; Armendariz, Gerardo; Arthur, Dan; Augustine, David; Baffaut, Claire; Bean, Alycia; Bestlemeyer, Brandon; Browning, Dawn M.; Carlson, Bryan; Clark, Pat; Derner, Justin; Goslee, Sarah; Huggins, David; James, David; Kaplan, Nicole; King, Kevin W.; Kleinman, Peter; Ponce-Campos, Guillermo; Porensky, Lauren; Robertson, Phil; Sadler, E. John; Smith, Doug; Spiegal, Sheri; Steiner, Jean; Strickland, Timothy C.; Vandenberg, Bruce; Van Vactor, Steven; Wienhold, Brian; Yasarer, Lindsey (2020). Long-Term Agroecosystem Research Network regions, 2018 version. Ag Data Commons.