| Impact ID | 9131 |
| Impact Type | Competition |
| Study Type | Experimental |
| Study Location | Field |
| Impact Description | An experimental stocking study examined the impact of zander (Sander lucioperca) introduction on the fish community. Results suggest that perch (Perca fluviatilis) shifted its habitat use towards littoral lake areas due to competition with zander and northern pike (Esox lucius) was largely unaffected. |
| Reference | 41850 |
| Cost | |
| Location | Lake Großer Vätersee, Germany |