| Impact ID | 4624 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Trapa natans forms dense mats, and competes and replaces
the native plant Vallisneria americana. |
| Reference | 17104 |
| Great Lakes Region | No |
| Cost | |
| Location | Hudson River, New York, USA |
