| Impact ID | 8305 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | No impact was found on native species biomass following the invasion of New Zealand mudsnail (Potamopyrgus antipodarum) in Glen Canyon of the Colorado River. |
| Reference | 24666 |
| Cost | |
| Location | Glen Canyon, Colorado River |