| Impact ID | 5173 |
| Impact Type | Habitat Alteration |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Pools that had been invaded by Cherax quadricarinatus in northwestern Australia (where C. quadricarinatus is a native transplant) completely lacked macrophytes, whereas pools without the crayfish had 48% macrophyte cover. It is not clear if the mechanism for this impact is through herbivory or physical removal. |
| Reference | 37838 |
| Cost | |
| Location | Northwestern Australia |