| Impact ID | 3646 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | C. perifretum density also declined at sites colonized by Ponticola kessleri and/or Proterorhinus semilunaris only. However, when compared to sites where N. melanostomus was present, C. perifretum density remained relatively high. |
| Reference | 34243 |
| Cost | |
| Location | Europe |