Eyes on Earth Episode 135 – Exotic Annual Grasses and Sheep Grazing
Invasive grasses are degrading sagebrush in western states. Can sheep help us restore these ecosystems?
Summary: Exotic annual grasses, or EAGs, are invasive species. They outcompete native grasses. They are extremely flammable. And they are expanding into higher elevations. Targeted sheep grazing is one way to combat these invasive grasses, manage fire risk, and help restore native sagebrush in western states.
The EROS team releases weekly EAG maps during the peak green-up in late April to early June, along with annual phenology maps to show the seasonal timing of the green-up. Dr. Kelly Hopping at Boise State University is using these maps to see whether targeted sheep grazing can help manage EAGs. The maps help researchers work with sheep producers to know when is the best time to move the sheep into those areas so their grazing can do the most good. The sheep then, as a part of the team solving the problem of invasive grasses, get to eat in the field when they might not otherwise have grazing available. Learn more in this Eyes on Earth episode.
Guests:
Kelly Hopping, Boise State University
Matthew Rigge, USGS EROS
Devendra Dahal, KBR, contractor for USGS EROS
Trenton Benedict, KBR, contractor for USGS EROS
Host: Tom Adamson (contractor for USGS EROS)
Producer: Tom Adamson (contractor for USGS EROS)
Release date: Tuesday, May 27, 2025
Download and Transcript Access
Related Episodes
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Eyes on Earth Episode 66 – Exotic Annual Grasses
The rangelands of the western United States are changing more quickly than many other parts of the lower 48. Miles upon miles of the area or semi-arid landscapes in states like Idaho, Montana and Nevada are now carpeted by fire fueling invasive grasses. Cheatgrass is the most prevalent, which is troublesome for several reasons. First off, it greens up and browns down really quickly, leaving a...
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Eyes on Earth Episode 45 - Harmonized Landsat-Sentinel
Landsat satellites have monitoring the Earth’s surface for nearly 50 years, providing critical information for countless areas of study and real-world applications. But with observations only collected every 8-16 days, there are limits to what can be tracked. On today’s episode of Eyes on Earth, we hear about a soon-to-be-released data product that merges Landsat with data from the European Space...
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Eyes on Earth Episode 42 – Rangelands of the U.S.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive. But most satellite-based land cover datasets don’t offer the kind of detail needed to track small but...
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Invasive grasses are degrading sagebrush in western states. Can sheep help us restore these ecosystems?
Summary: Exotic annual grasses, or EAGs, are invasive species. They outcompete native grasses. They are extremely flammable. And they are expanding into higher elevations. Targeted sheep grazing is one way to combat these invasive grasses, manage fire risk, and help restore native sagebrush in western states.
The EROS team releases weekly EAG maps during the peak green-up in late April to early June, along with annual phenology maps to show the seasonal timing of the green-up. Dr. Kelly Hopping at Boise State University is using these maps to see whether targeted sheep grazing can help manage EAGs. The maps help researchers work with sheep producers to know when is the best time to move the sheep into those areas so their grazing can do the most good. The sheep then, as a part of the team solving the problem of invasive grasses, get to eat in the field when they might not otherwise have grazing available. Learn more in this Eyes on Earth episode.
Guests:
Kelly Hopping, Boise State University
Matthew Rigge, USGS EROS
Devendra Dahal, KBR, contractor for USGS EROS
Trenton Benedict, KBR, contractor for USGS EROS
Host: Tom Adamson (contractor for USGS EROS)
Producer: Tom Adamson (contractor for USGS EROS)
Release date: Tuesday, May 27, 2025
Download and Transcript Access
Related Episodes
-
-
Eyes on Earth Episode 66 – Exotic Annual Grasses
The rangelands of the western United States are changing more quickly than many other parts of the lower 48. Miles upon miles of the area or semi-arid landscapes in states like Idaho, Montana and Nevada are now carpeted by fire fueling invasive grasses. Cheatgrass is the most prevalent, which is troublesome for several reasons. First off, it greens up and browns down really quickly, leaving a...
-
Eyes on Earth Episode 45 - Harmonized Landsat-Sentinel
Landsat satellites have monitoring the Earth’s surface for nearly 50 years, providing critical information for countless areas of study and real-world applications. But with observations only collected every 8-16 days, there are limits to what can be tracked. On today’s episode of Eyes on Earth, we hear about a soon-to-be-released data product that merges Landsat with data from the European Space...
-
Eyes on Earth Episode 42 – Rangelands of the U.S.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive. But most satellite-based land cover datasets don’t offer the kind of detail needed to track small but...
-