Allan Savory's Holistic Management Theory of fighting desertification by running more cattle on pasture land falls short on science.
Rangeland ecologists question Savory's assertion that large herbivores (like cattle) can be instrumental in restoring grasslands to health.
Photo by Flickr/89654772@n05
In his 2013 TED talk, Savory (right) spent a great deal of time on photos and assertions, but presented very little data.
Photo courtesy Steve Jurvetson
Prairie grassland in Dane County, Wisconsin. In Savory's universe, ungrazed land, known as "rested" land, will always wither away. "It's just wrong, " said Brewer. A substantial number of studies on desert grassland have found that with rest, grass cover "increases dramatically," while "intensive grazing delays this recovery."