The intricate mechanisms controlling plant diversity and community composition are cornerstone of ecological understanding. Yet, the role of mycorrhizal symbiosis in influencing community composition has often been underestimated. Here, we use extensive species survey data from 1315 grassland sites in China to elucidate the influence of mycorrhizal symbiosis on plant phylogenetic diversity and community assembly. We show that...

Interactions between predator and prey, or parasitoid and host, are shaped by trait‐ and density‐mediated processes involving other community members. Parasitoids that lay their eggs in herbivorous insects locate their hosts through infochemicals such as herbivore‐induced plant volatiles ( HIPV s) and host‐produced kairomones. Hosts are frequently accompanied by non‐host herbivores that are unsuitable for the parasitoid. These...