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Location Folder Show Tree ROOT _ScienceBase Catalog __USGS Rangeland Exotic Plant Monitoring System ___250m Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Raster (2) Types Downloadable (2) GeoTIFF (2) Map Service (2) Contacts Stephen Boyte (CTR) Stephen P Boyte Bruce K Wylie Earth Resources Observation and Science (EROS) Center U.S. Geological Survey - ScienceBase Land Resources U.S. Geological Survey Categories Data (3) Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (2) Harvest Set (2) Label (1) Organization (1) Science Themes (1) Wildlife and Plants (1) Tag Schemes None (2) Common geographic areas (2) ISO 19115 Topic Category (2) https://www.sciencebase.gov/vocab/category/NCCWSC/Project/OrganizationName (1) https://www.sciencebase.gov/vocab/category/NCCWSC/ScienceThemes (1) https://www.sciencebase.gov/vocab/category/NCCWSC/WildlifeandPlants (1) View Results as: JSON ATOM CSV Browse Folder

Early Estimates of Herbaceous Annual Cover in the Sagebrush Ecosystem (May 1, 2019) The dataset provides a spatially explicit estimate of 2019 herbaceous annual percent cover predicted on May 1st with an emphasis on annual grasses. The estimate is based on the mean output of two regression-tree models. For one model, we include, as an independent variable amongst other independent variables, a dataset that is the mean of 17-years of annual herbaceous percent cover (https://doi.org/10.5066/F71J98QK). This model's test mean error rate (n = 1670), based on nine different randomizations, equals 4.9% with a standard deviation of +/- 0.15. A second model was developed that did not include the mean of 17-years of annual herbaceous percent cover, and this model's test mean error rate (n = 1670), based... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Bromus tectorum, California, Colorado, Desert, Ecology, All tags... Geography, Great Basin, Idaho, Land Use Change, Montana, Nevada, Oregon, Remote Sensing, Snake River Plain, USGS Science Data Catalog (SDC), Utah, Wyoming, annual grass, annual herbaceous, cheatgrass, fire, geoscientificInformation, habitat, invasive, ndvi, sagebrush, satellite, Fewer tags Near-real-time cheatgrass percent cover in the northern Great Basin, USA--2016 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 15.0. 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... Categories: Data; Types: Raster; Tags: Northwest CASC, Plants, Wildlife and Plants Near-real-time Herbaceous Annual Cover in the Sagebrush Ecosystem, USA, July 2019 This dataset provides a near-real-time estimate of 2019 herbaceous annual cover with an emphasis on annual grass (Boyte and Wylie. 2016. Near-real-time cheatgrass percent cover in the Northern Great Basin, USA, 2015. Rangelands 38:278-284.) This estimate was based on remotely sensed enhanced Moderate Resolution Imaging Spectroradiometer (eMODIS) Normalized Difference Vegetation Index (NDVI) data gathered through June 24, 2019. This is the second iteration of an early estimate of herbaceous annual cover for 2019 over the same geographic area. The previous dataset used eMODIS NDVI data gathered through April 28, 2019 (https://doi.org/10.5066/P9ZEK5M1). The pixel values for this most recent estimate ranged from 0 to100%... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Bromus rubens, Bromus tectorum, California, Colorado, Desert, All tags... Ecology, Geography, Great Basin, Idaho, Land Use Change, Montana, NDVI, Nevada, Oregon, Remote Sensing, SageDAT-data, Snake River Plain, Taeniatherum caput-medusae, USGS Science Data Catalog (SDC), United States, Utah, Ventenata, Wyoming, annual grass, annual herbaceous, cheatgrass, fire, geoscientificInformation, habitat, invasive, medusahead, red brome, sagebrush, satellite, ventenata dubia, western United States, Fewer tags