Abstract Cover crops are increasingly being included in crop rotations as a mechanism to promote diversity and provide agroecosystem services, including weed suppression. Recently, cover mixtures have increased popularity an attempt greater ecological services compared with monocultures. Several recent studies, however, failed detect positive effect of on biomass production or Here we assessed ...

Ecological character displacement occurs when competition imposes divergent selection on interacting species, causing divergence in traits associated with resource use. Generally, divergence is assumed to occur when selection acts on the same, continuously varying trait in both species. However, selection might target multiple traits, and even closely related heterospecifics involved in charact...