Spatial variability in trophic offset and food sources of Hemimysis anomala in lentic and lotic ecosystems within the Great Lakes basin

Invasive species are a known stressor on aquatic ecosystems, particularly in the waters of the Great Lakes basin. A recent invader, Hemimysis anomala, has had significant impacts on food webs in Europe, where it invaded previous to its spread to North America. This study used carbon and nitrogen stable isotopes to characterize and compare the diet of Hemimysis from 13 sites in the Great Lakes basin. Results indicated that: (i) Hemimysis relied …