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Alien Plant Invasion in Mixed-grass Prairie: Effects
of Vegetation Type and Anthropogenic Disturbance

Acknowledgments

We thank S. Marks and A. Beaulieu for able assistance with vegetation surveys and D. Johnson for advice on the analysis. R. Hiebert provided useful discussion throughout the study. S. Hager kindly provided GIS data for TRNP. The vegetation coverage was developed and ground-truthed by J. Norland and edited by S. Hager. J. Bennett, B. Rubenstein, E. Schneider, K. Rice, and two anonymous reviewers provided helpful comments on earlier versions of the manuscript. National Park Service, Theodore Roosevelt National Park, granted us permission to work on park property. Support for this study was provided by USGS through the Natural Resources Protection Program and Northern Prairie Wildlife Research Center. Use of trade names does not imply any endorsement by U.S. government.

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Alien Plant Invasion in Mixed-grass Prairie: Effects of Vegetation Type and Anthropogenic Disturbance

Acknowledgments

Alien Plant Invasion in Mixed-grass Prairie: Effects
of Vegetation Type and Anthropogenic Disturbance