• Photograph of a butterfly.


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A Field Guide to Butterflies of the Greater Yellowstone

D. Debinski and Pritchard, J., Roberts Rinehart, 2002, p. 160.

Yellowstone and Grand Teton National Parks, while mostly noted for grizzly bears, elk, moose, and other large mammals, also host a high species diversity of butterflies, owing to the ecosystem's vast area of pristine habitat. Many of the nearly 120 butterflies described can also be found elsewhere in the Northern Rockies, making the book useful beyond the artificial borders of the public lands.

A Green and Permanent Land: Ecology and Agriculture in the Twentieth Century

R. S. Beeman and Pritchard, J., University Press of Kansas, 2001, p. 232.

Once patronized primarily by the counterculture and the health food establishment, the organic food industry today is a multi-billion-dollar business driven by ever-growing consumer demand for safe food and greater public awareness of ecological issues. Assumed by many to be a recent phenomenon, that industry owes much to agricultural innovations that go back to the Dust Bowl era.

Preserving Yellowstone's Natural Conditions

J. Pritchard, University of Nebraska Press, 1999, p. 370.

American ecologists seeking to influence the founders of the National Park Service had hoped that protection of the parks would create preserves where “natural conditions” could exist in an idealized presettlement state. These hopes, however, produced a bitter irony. In order to secure a naturally functioning park, officials had to provide intensive management to preserve “nature at work.” For the better part of the twentieth century, the forms this management has taken have polarized public opinion.