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Experimental manipulation of soil depth alters species richness and co‐occurrence in restored tallgrass prairie

1. In relatively fertile ecosystems, such as the tallgrass prairie, local species diversity is largely controlled by the competitive effects of community dominants. Despite the relative importance of soil resources in shaping competitive outcomes, we have a limited understanding of the ways by which plants partition below‐ground space and resources while competing, and thus, how these interactions feedback to affect local diversity.