| Impact ID | 8997 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Rhamnus frangula (glossy buckthorn) may be a competitive threat to two endangered Rhamnus spp. in the Great Lakes: Rhamnus alnifolia (alderleaf buckthorn; endangered in Illinois) and Rhamnus lanceolata (lanceleaf buckthorn; endangered in Pennsylvania). |
| Reference | 24926 |
| Cost | |
| Location | |