| Impact ID | 2719 |
| Impact Type | Habitat Alteration |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | The presence of the established oyster beds in Patagonia created a refugium which resulted in a higher density of invertebrates ad migratory birds. |
| Reference | 33773 |
| Great Lakes Region | No |
| Cost | |
| Location | |
