| Impact ID | 5120 |
| Impact Type | Predation/Herbivory |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | fewer snails, crustaceans and insect larvae in EFB mats relative to native; fewer benthic worms and more chironomids below, more mobile benthos |
| Reference | 37720 |
| Cost | |
| Location | Great Lakes |