Wolf-Bison Interactions in Yellowstone National Park

Acknowledgments

This study was supported by the National Geographic Society, Yellowstone National Park, the Biological Resources Division of the United States Geological Survey, the United States Department of Agriculture North Central Research Station, and National Science Foundation grant DEB-9806266. We thank R. Stradley for safe and capable piloting of the research aircraft and S. Evans, D. Guernsey, H. Marstall, and T. Zeiber (Yellowstone Wolf Project volunteers) for help in preparation of the manuscript. We also thank K. Honness, D. MacNulty, T. McKenna, S. Monger, and K. Murphy for their observations of wolf-killed bison. We appreciate the work of V. Magnis on Fig. 1. The manuscript benefited from discussions and review by S. DuBois, R. Garrott, R. Toby, and J. Weaver.

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