Congrats Dominik Schmid on your excellent MS work, forthcoming in The American Naturalist. I knew I made all those stickleback babies for a good reason! Dominik found that very recently diverged (<200 yrs) lake and stream sticklebacks already differ in their feeding morphology, and that this translates into different feeding efficiency and selectivity in a diverse zooplankton community, altering ecosystem composition and function. Dominik’s easy-to-understand abstract available here.
Dominik W. Schmid, Matthew D. McGee, Rebecca J. Best, Ole Seehausen, and Blake Matthews (Mar 2019). Rapid divergence of predator functional traits affects prey composition in aquatic communities. The American Naturalist.