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Plant Density at Permanent Quad Locations on the Jornada Experimental Range, 1915-ongoing
This ongoing data set contains counts of perennial forbs and subshrubs 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 locations of forbs and subshrubs within each quadrat. Quadrats were established at different times, with start dates from 1915 to 1935. 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 basal cover of perennial grasses and canopy cover of shrubs is also available for this project (data package knb-lter-jrn.210351001).
Resources in this dataset:
Resource Title: Website Pointer to html file.
File Name: Web Page, url: https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-jrn&identifier=210351002
Webpage with information and links to data files for download
Funding
USDA-ARS
National Science Foundation
History
Data contact name
Data ManagerData contact email
jornada.data@nmsu.eduPublisher
Environmental Data Initiative (EDI)Use limitations
This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). 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
1915-06-04Temporal Extent End Date
2016-12-15Theme
- Not specified
Geographic Coverage
{"type":"FeatureCollection","features":[{"geometry":{"type":"Polygon","coordinates":[[[-106.926435,32.737108],[-106.528942,32.737108],[-106.528942,32.466879],[-106.926435,32.466879],[-106.926435,32.737108]]]},"type":"Feature","properties":{}}]}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 intensificationOMB 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
