Our lab has been working on accurately mapping a phenomenon known as cheatgrass die-off. Although the exact mechanism responsible for a cheatgrass die-off is still being figured out it is thought that a combination of a fungal pathogen along with certain weather conditions and litter accumulation are responsible for creating these stand failure events. We've been using Landsat to map 35 years of cheatgrass die-off in the Winnemucca area of Nevada. We plan to publish our results in a forthcoming journal article very soon, but in the mean time we have added a link to a movie file (AVI) showing cheatgrass die-off by year. Sit back and enjoy.
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