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Species combinations in the six experimental plant communities.
| community | species 1 | species 2 | species 3 |
|---|---|---|---|
| native 1 | Hesperostipa comata | Koeleria cristata | Lupinus sericeusa |
| native 2 | H. comata | K. cristata | Pseudoroegneria spicata |
| non-native 1 | Agropyron cristatum | Bromus tectorum | Centaurea diffusa |
| non-native 2 | A. cristatum | B. tectorum | Medicago sativaa |
aNitrogen-fixing species.
