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Early Estimates of Exotic Annual Grass (EAG) in the Sagebrush Biome, USA, 2023 (ver. 6.0, June 2023)

Dates

Publication Date
Start
2023-05
End
2023-07
Last Update
2023-06-20

Citation

Dahal, D., Boyte, S.P., Parajuli, S., Pastick, N.J., Megard, L., Postma, K., and Shrestha, D., 2023, Early Estimates of Exotic Annual Grass (EAG) in the Sagebrush Biome, USA, 2023 (ver. 8.0, June 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P9351ZTZ.

Summary

These datasets provide early estimates of 2023 fractional cover for exotic annual grass (EAG) species and one native perennial grass species on a weekly basis from May to early July. The EAG estimates are developed typically within 7-13 days of the latest satellite observation used for that version. Each weekly release contains four fractional cover maps along with their corresponding confidence maps for: 1) a group of 16 species of EAGs, 2) cheatgrass (Bromus tectorum); 3) medusahead (Taeniatherum caput-medusae); and 4) Sandberg bluegrass (Poa secunda). These datasets were generated leveraging field observations from Bureau of Land Management (BLM) Assessment, Inventory, and Monitoring (AIM) data plots; Harmonized Landsat and Sentinel-2 [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

PercentCover_ArcGIS_ColorRamp.lyr 27 KB application/x-tika-msoffice
PercentCover_QGIS_ColorRamp.qml 2.24 KB text/plain
RevisonHistory_v6.txt 1.17 KB text/plain
EAG_June2023_PercentCover_v6.0.png thumbnail 3.21 MB image/png
Extension: Cheatgrass_2023June05_Confidence.zip
Cheatgrass_2023June05_Confidence.tif 463.84 MB
Extension: Cheatgrass_2023June05_PercentCover.zip
1.01 GB
Extension: ExoticAnnualGrass_2023June05_Confidence.zip
ExoticAnnualGrass_2023June05_Confidence.tif 498.46 MB
Extension: ExoticAnnualGrass_2023June05_PercentCover.zip
1.1 GB
Extension: Medusahead_2023June05_Confidence.zip
Medusahead_2023June05_Confidence.tif 264.6 MB
Extension: Medusahead_2023June05_PercentCover.zip
Medusahead_2023June05_PercentCover.tif 417.65 MB
Extension: SandbergBluegrass_2023June05_Confidence.zip
SandbergBluegrass_2023June05_Confidence.tif 375.53 MB
Extension: SandbergBluegrass_2023June05_PercentCover.zip
SandbergBluegrass_2023June05_PercentCover.tif 721.64 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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