Cristina Eisenberg

Cristina Eisenberg

Ecologist Cristina Eisenberg studies wolves, bison, and fire in Rocky Mountain ecosystems and works to empower native people to use Traditional Ecological Knowledge to restore nature and create a resilient, sustainable Earth. She is the former chief scientist at Earthwatch Institute where she developed strategic initiatives to explore key environmental sustainability issues and establish partnerships with principal investigators. She is a Smithsonian Research Associate, a Boone and Crockett Club professional member, and the nonfiction editor of the literary journal Whitefish Review. She serves on the board of directors for the Society of Ecological Restoration, the board of trustees at Prescott College, and the editorial board of Oregon State University Press. She holds a PhD in forestry and wildlife from Oregon State University. Her books for Island Press include The Carnivore Way: Coexisting with and Conserving America's Predators and The Wolf's Tooth: Keystone Predators, Trophic Cascades, and Biodiversity. She lives with her family in a remote, wild corner of northwest Montana.

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Creating Resilience: Trophic Cascades and Climate Change

By Cristina Eisenberg / On August 23rd, 2011
Ecologist Robert Paine summed up the effects of keystone predator removal by saying, “You can change the nature of the world pretty simply. All you need to do is remove one species.” In The Wolf’s Tooth, I compare ecosystems from which carnivores have been removed to a game of Jenga. This game involves removing wooden blocks one at a time from a tower without causing it to collapse. As you remove them, the tower starts to teeter, loosening some of the blocks, making them easier to remove.
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Aldo Leopold and the Mark of the Wolf's Tooth

By Cristina Eisenberg / On August 4th, 2011
In the early 1900s, while cruising timber as a young forester, American conservationist Aldo Leopold, founder of the science of wildlife biology, encountered a female wolf with her pups. The common wisdom of that era was that the only good predator was a dead one, so he and his crew opened fire. But as he stood there watching the “fierce green light” fade in the wolf mother’s eyes, he felt a sharp, surprising pang of remorse. It would take him decades to parse out his feelings about her death. In 1935, Leopold bought an abandoned farm in southwestern Wisconsin as a hunting reserve.
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Earth Day at the Shack

By Cristina Eisenberg / On April 21st, 2011
Three springs ago I visited the Leopold Memorial Reserve—the depleted Wisconsin sand county farm Aldo Leopold bought in 1930 known as the “shack.” In the 1940s he recorded in his field notes that without large predators such as wolves to regulate their numbers, deer were eating aspens and other trees and shrubs to death.
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And Winter Broke

By Cristina Eisenberg / On March 31st, 2011
In March I participated in a University of Nebraska literary retreat at the Platte River Whooping Crane Maintenance Trust. It was the climax of spring migration on the river, where sandhill cranes pause to feed during their 5,000 mile journey from Mexico to as far as Siberia. I spent my time there ensconced in a primitive blind with several eminent poets, bearing witness to the cranes' sempiternal return.
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Hunting and the Land Ethic

By Cristina Eisenberg / On January 31st, 2011
I spent a dozen purple dusks and gilded dawns last December hunkered down in the hoarfrost in coulees, hiding in the rabbitbrush and sage during a late-season Colorado elk hunt. In an area with too many elk and not enough wolves, hunting cow elk provides a powerful conservation tool, because of its effectiveness in thinning herds. I had convened a science hunt on the High Lonesome Ranch in north-central Colorado.