Indicators for Climate Change Impacts - Rivers in temperate ecoregions, Large rivers
Mobilisation of toxic substances
| Stressor type | Hydrology / Morphology |
|---|---|
| Responding parameter group | Physico-chemical parameters |
| Responding parameter | Mobilisation of toxic substances |
Response description
Extreme precipitation events lead to inundation of former mining and deposition zones, mobilising toxic substances (heavy metals, POPs) stored in the bottom substrate.
Secondary effects
Enhanced concentration of toxic substances and respective consequences for biota and drinking water quality.
Specification of relevant ecosystem type
Relevant for all large rivers in temperate ecoregions.
Relevant ecoregion(s) according to Illies
Central Lowlands (14), Western Lowlands (13)
Suggested indicator
Concentration of toxic substances, e.g. heavy metals.
Justification of indicator
Several “priority substances” are already routinely monitored for the purpose of the Water Framework Directive.
