Ag Data Commons

File(s) stored somewhere else

Please note: Linked content is NOT stored on Ag Data Commons and we can't guarantee its availability, quality, security or accept any liability.

Plant Cover at Permanent Quad Locations on the Jornada Experimental Range, 1915-ongoing

posted on 2023-11-30, 10:19 authored by William Chapline, Kris Havstad, Brandon Bestelmeyer

This ongoing data set contains basal cover of perennial grasses and canopy cover of shrubs in 122 1m x 1m quadrats on the Jornada Experimental Range in the northern extent of the Chihuahuan Desert of New Mexico, USA. These quadrats were established to investigate livestock grazing effects on plant community dynamics as well as responses to variable climatic conditions over time. Vegetation monitoring is carried out by charting the basal areas of perennial grasses and canopy areas of shrubs within each quadrat. Quadrats were established at different times, with start dates from 1915 to 1932. Specific quadrat locations were selected for a variety of reasons, but the overall intent was to represent varying plant community conditions across the Jornada Experimental Range. From 1915 to 1924 charting was done by dividing the quadrat frame into a decimeter grid using straps and reproducing locations of plants on grid paper. From 1925 to 2016 charting was done using a pantograph. With few exceptions, quadrats were charted until 1947, and a portion of the quadrats were charted intermittently between 1947 and 1979. Sampling resumed again in 1995 and continues every 5-6 years. Charts are digitally scanned, georeferenced, and chart features are digitally reproduced by hand. This data set is not yet complete; charts are actively being processed by Jornada Experimental Range staff and will be updated to this data package as they become available. A companion data package of counts of perennial forbs and subshrubs for each quadrat is also available for this project (data package knb-lter-jrn.210351002).

Resources in this dataset:


Agricultural Research Service

National Science Foundation


Data contact name

Data Manager

Data contact email


Environmental Data Initiative (EDI)

Use limitations

This information is released under the Creative Commons license - Attribution - CC BY ( The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Temporal Extent Start Date


Temporal Extent End Date



  • Not specified

Geographic Coverage


Geographic location - description

Jornada Experimental Range, Dona Any County, New Mexico, Usa. More Detailed Geographic Information Can Be Requested From The Data Manager.

ISO Topic Category

  • farming
  • environment
  • biota
  • climatologyMeteorologyAtmosphere
  • geoscientificInformation

Ag Data Commons Group

  • Jornada Experimental Range
  • Long-Term Agroecosystem Research

National Agricultural Library Thesaurus terms

agroecosystems; rangelands; sustainable agricultural intensification

OMB Bureau Code

  • 005:18 - Agricultural Research Service

OMB Program Code

  • 005:040 - National Research

ARS National Program Number

  • 216

Pending citation

  • No

Public Access Level

  • Public

Preferred dataset citation

Chapline, William; Havstad, Kris; Bestelmeyer, Brandon (2020). Plant Cover at Permanent Quad Locations on the Jornada Experimental Range, 1915-ongoing. Environmental Data Initiative (EDI).