| Impact ID | 7828 |
| Impact Type | Harvest |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | When interplanted on coal mine reclamation sites, black alder's (Alnus glutinosa) presence was associated with the doubling in size of adjacent yellow-poplar (Liriodendron tulipifera), white ash (Fraxinus americana), and American sycamore (Plantanus occidentalis). |
| Reference | 25062 |
| Cost | |
| Location | |