Tag Archives: Schmitz

Does it show evidence for a trait-mediated effect of ladybeetles, density-mediated effect of ladybeetles, both, or neither? Briefly explain.

Schmitz (1998) found that trait-mediated indirect interactions (TMII) were stronger than density-mediated indirect interactions (DMII) in a spider-grasshopper-grass system. Rinehart et al. (2017) ran a similar experiment with ladybeetles (predator) – scale insects  – cordgrass . The plot shows the density of the prey  over time. Does it show evidence for a trait-mediated effect of […]