1.   But once they invade native prairie areas, these introduced species dominate native plant communities.

2.   He will also tell you about his native prairie grasses and wildflowers.

3.   The difference is that preserving and restoring native prairie has long been a high-profile cause with conservationists.

4.   Wheat was never replanted on much of the land, which was reseeded with native prairie grass.

5.   Birger and other workers have spent the last several years re-creating native prairie at the refuge.