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The relationship between exotic plant species richness and total below-ground bud bank density across multiple watershed units in the tallgrass prairie landscape at Konza Prairie Biological Station, KS, USA (D. C. Hartnett and H. J. Dalgleish, unpubl. res.). Bud bank densities were measured at the end of the winter dormant season (March) and plant species composition was measured during the growing season (May to August).
