| Impact ID | 10058 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Shoot density of Cymodocea nodosa decreased by 50% in four years after the introduction and increase in shoot density of Halophila stipulacea. |
| Reference | 45841 |
| Great Lakes Region | No |
| Cost | |
| Location | Tunisia |