Lmst

#cheatgrass

Simulating #sagebrush– #cheatgrass plant community biomass production in the Great Basin using ALMANAC
by Merilynn C. Schantz, James R. Kiniry, Amber S. Williams, Kelly R. Thorp, Beth Newingham, Stuart P. Hardegree, C. Jason Williams, Kirk W. Davies, Roger L. Sheley
https://acsess.onlinelibrary.wiley.com/doi/10.1002/csc2.21440 via Crop Science #PlantScience #Model

Differentiating Cheatgrass And Medusahead Phenological Characteristics In Western United States Rangelands [remote sensing]
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https://doi.org/10.3390/rs16224258 <-- shared paper
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#GIS #spatial #mapping #vegetation #grassland #cheatgrass #medusahead #BRTE #TACA8 #phenology #growingseason #rangeland #EAG #invasivespecies #management #landmanagers #habitat #cost #loss #economicimpact #ecosystem #deterioration #impacts #USWest #spatialanalysis #spatiotemporal #model #modeling #treemodel #landsat #sentinel #HLS #satellite #remotesensing #vegetationindex #NDVI #research #testcase #corrleation #metrics #controlmeasures #herbicide #cattle #grazing #mitigation #landcover #NLDI

photos - cheatgrass various growth stages

graphic / chart - Phenology metrics indicated on a 52-week normalized difference vegetation index (NDVI) time-series curve.

map - Study area boundaries of Snake River Plain and Northern Basin and Range ecoregions within the exotic annual grass (EAG) study area of western U.S. rangelands. The masked-out areas (white/hollow) within the ecoregion are elevations greater than 2350 m or areas not classified as shrub or grassland by the 2019 National Land Cover Database.

work flow graphic - Phenology method flowchart. This flowchart is the overview of capturing the phenology training data for cheatgrass (BRTE [44]) and medusahead (TACA8)
(a) The methods for extracting high probability BRTE and TACA8 pixels
(b) the decision tree analysis development using exotic annual grass (EAG) training data from Benedict et al.
(c) developing the training data
(d) developing the phenology model.

Even when humans try to help foster regrowth of burned or damaged #JoshuaTrees, it’s a long, fraught process, said Ashley Hemmers, a tribal administrator for the #FortMojaveTribe, whose ancestors have lived for centuries in the region. Now, the fires are fed by invasive species such as #cheatgrass, Mediterranean #splitgrass and #Saharamustard that #litter the #desert floor.

Delighted to see our new paper out in Journal of Applied Ecology. We examine how #wildfire and #restoration interact with community composition to determine long-term #ecosystem dynamics. This work utilizes a unique 30+ year dataset from #sagebrush steppe in the Columbia Basin WA.