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Early Estimates of Exotic Annual Grass (EAG) in the Sagebrush Biome, USA, 2024 (ver. 5.0, May 2024)

Dates

Publication Date
Start Date
2024-04
End Date
2024-06
Release Date
2024-05-17

Citation

Dahal, D., Boyte, S.P., Postma, K., Pastick, N.J., and Megard, L., 2024, Early Estimates of Exotic Annual Grass (EAG) in the Sagebrush Biome, USA, 2024 (ver. 10.0, June 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P1Y5TZBM.

Summary

These datasets provide early estimates of 2024 fractional cover for exotic annual grass (EAG) species and one native perennial grass species on a weekly basis from April to late June. Typically, the EAG estimates are publicly released within 7-13 days of the latest satellite observation used for that version. Each weekly release contains five fractional cover maps along with their corresponding confidence maps for: 1) a group of 16 species of EAGs, 2) cheatgrass (Bromus tectorum); 3) Field Brome (Bromus arvensis); 4) medusahead (Taeniatherum caput-medusae); and 5) Sandberg bluegrass (Poa secunda). These datasets were generated leveraging field observations from Bureau of Land Management (BLM) Assessment, Inventory, and Monitoring (AIM) [...]

Contacts

Attached Files

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RevisonHistory_v5.txt 1.05 KB text/plain
PercentCover_ArcGIS_ColorRamp.lyr 27 KB application/x-tika-msoffice
PercentCover_QGIS_ColorRamp.qml 2.24 KB text/plain
EAG_PercentCover_May17_2024_v5.png thumbnail 7.89 MB image/png
Extension: Exotic Annual Grass Percent Cover, May 10, 2024.zip
1.1 GB
Extension: Exotic Annual Grass Confidence, May 10, 2024.zip
ExoticAnnualGrass_2024May10_Confidence.tif 559.29 MB
Extension: Cheatgrass Percent Cover, May 10, 2024.zip
1.01 GB
Extension: Cheatgrass Confidence, May 10, 2024.zip
Cheatgrass_2024May10_Confidence.tif 511.59 MB
Extension: Field Brome Percent Cover, May 10, 2024.zip
FieldBrome_2024May10_PercentCover.tif 470.68 MB
Extension: Field Brome Confidence, May 10, 2024.zip
FieldBrome_2024May10_Confidence.tif 292.34 MB
Extension: Medusahead Percent Cover, May 10, 2024.zip
Medusahead_2024May10_PercentCover.tif 351.09 MB
Extension: Medusahead Confidence, May 10, 2024.zip
Medusahead_2024May10_Confidence.tif 252.59 MB
Extension: Sandberg Bluegrass Percent Cover, May 10, 2024.zip
SandbergBluegrass_2024May10_PercentCover.tif 619.26 MB
Extension: Sandberg Bluegrass Confidence, May 10, 2024.zip
SandbergBluegrass_2024May10_Confidence.tif 342.8 MB

Purpose

The purpose for these releases is to provide land managers and researchers with near real time estimates of spatially explicit exotic annual grasses percent cover in the study area. Appropriate use of the data should be defined by the user; however, this data comes with caveats. First, these estimates should be viewed as relative abundances. Second, comparing this dataset to similar datasets with different spatial resolutions or different dates can lead to substantial differences between dataset values.

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