| Impact ID | 4499 |
| Impact Type | Water Quality |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In Lake Mälaren, Sweden, dense stands of Elodea canadensis become coated with calcium carbonate, raising overall pHin the system. |
| Reference | 36384 |
| Great Lakes Region | No |
| Cost | |
| Location | Sweden |
