Indicators for Climate Change Impacts - Rivers in cold ecoregions, Large rivers
Spread of alien species
| Stressor type | Temperature |
|---|---|
| Responding parameter group | Biological parameters |
| Responding parameter | Spread of alien species |
Response description
Higher temperatures often favour alien species that increasingly colonise small streams. These could be alien fish, macrophyte or macroinvertebrate species.
Secondary effects
Strong competitions with native species.
Specification of relevant ecosystem type
Relevant for all large rivers in cold ecoregions.
Relevant ecoregion(s) according to Illies
Borealic Uplands (20), Tundra (21), Fennoscandian Shield (22), Taiga (23)
Suggested indicator
Water temperature (maximum and minimum monthly values)
Justification of indicator
The survival and reproduction of several alien species in temperate ecoregions is controlled by minimum temperatures.
