| Impact ID | 7103 |
| Impact Type | Habitat Alteration |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In Germany, the infestation of Myriophyllum aquaticum mats created shaded conditions in shallow waters, and appeared to be correlated with a decline in native macrophyte diversity. |
| Reference | 32654 |
| Cost | |
| Location | Germany |