Mountain Invasion Research Network (MIREN) survey
Roadside observations of non-native plant species along elevational gradients made by the Mountain Invasion Research Network (MIREN). See Alexander, J. M., C. Kueffer, C. C. Daehler, P. J. Edwards, A. Pauchard, T. Seipel, and MIREN Consortium. 2011. Assembly of nonnative floras along elevational gradients explained by directional ecological filtering. Proceedings of the National Academy of Sciences 108:656-661.
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