Near-real-time cheatgrass percent cover in the northern Great Basin, USA--2016

Metadata Updated: November 12, 2020

This dataset provides an estimate of 2016 cheatgrass percent cover in the northern Great Basin at 250 meter spatial resolution. The dataset was generated by integrating eMODIS NDVI satellite data with independent variables that influence cheatgrass germination and growth into a regression-tree model. Individual pixel values range from 0 to 100 with an overall mean value of 15.4 and a standard deviation of 15.24. A mask covers areas not classified as shrub/scrub or grass/herbaceous by the 2001 National Land Cover Database. The mask also covers areas higher than 2000 meters in elevation because cheatgrass is unlikely to exist at more than 2% cover above this threshold. Cheatgrass is an invasive grass that has invaded much of the Great Basin. It grows from seed, usually early in spring, and rapidly matures, produces seed, and dies. Its presence can deplete early-season moisture reserves and put native vegetation at a competitive disadvantage. In addition, it contributes fine fuels that facilitate fire ignition and fire spread. Rangeland fires are often stand replacing events in sagebrush communities, communities which historically dominated much of the northern Great Basin. Increasing fire return intervals, increasing fire intensities, land management practices, and development have all contributed to the fragmentation of sagebrush ecosystems, which are critical for greater sagegrouse survival.

Access & Use Information

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.

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Dates

Metadata Date June 23, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) June 23, 2016 (publication)
Frequency Of Update annually

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date June 23, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) June 23, 2016 (publication)
Responsible Party U.S. Geological Survey, CLIMATE & LAND-USE (Point of Contact)
Contact Email
Guid
Access Constraints Use Constraints: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein.Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations., Access Constraints: None. Please see 'Distribution Info' for details.
Bbox East Long -110.031858882
Bbox North Lat 45.717478793
Bbox South Lat 39.133354133
Bbox West Long -122.26389227
Coupled Resource
Frequency Of Update annually
Licence Distributor assumes no liability for misuse of data.
Metadata Language
Metadata Type geospatial
Progress planned
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2016-01-01
Temporal Extent End 2016-12-31

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