| Impact ID | 2978 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | Field |
| Impact Description | Hydrilla verticillata grows faster than native plants in the Potomac River/Chesapeake Bay area and may reduce their seasonal abundance. |
| Reference | 10138 |
| Great Lakes Region | No |
| Cost | |
| Location | |
