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