stressor | restored sites available | data before/after restoration available | stressor gradient available | comments |
eutrophication | yes | yes | yes | |
organic pollution | yes | yes | yes | |
toxic stress | yes | yes | yes | |
hydrologic stress (e.g. impoundment, flow velocity reduction, hydropeaking, water abstraction, flow velocity increase, etc.) | yes | yes | yes | Hunderfossen dam constructed in 1961-1964 |
thermal stress | yes | yes | yes | Lake temperature has increased during the monitoring period. |