| Impact ID | 9735 |
| Impact Type | Food Web |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | When Didymo was present, relative invertebrate abundance was lower than when Didymo was absent, and Deleatidium mayflies decreased whereas midges and oligochaetes increased. |
| Reference | 43373 |
| Great Lakes Region | No |
| Cost | |
| Location | New Zealand |
