| Impact ID | 7547 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In Sweden, Nitellopsis obtusa dies off in the winter, which reduces the ability of slow colonizers like the isopod Asellus and amphipod Gammarus to establish significant populations in this habitat. As a result, it typically hosts many chironomids, while Chara tomentosa harbors more amphipods and isopods. |
| Reference | 17612 |
| Cost | |
| Location | Lake Tåkern, Sweden |