| Impact ID | 3651 |
| Impact Type | Competition |
| Study Type | Experimental |
| Study Location | Laboratory |
| Impact Description | tubenose did not outcompete bullhead from the shelter, but
their influence on the shelter occupancy by the resident
bullhead was the same as that of intruding bullhead.
Independently of the intruding species, resident bullhead
increased shelter occupancy at night in spring
compared to the situation when it was alone, but this
‘intruder effect’ was not observed in autumn. |
| Reference | 34250 |
| Cost | |
| Location | |