Ecosystem | Type | Status | Ref. |
---|---|---|---|
Caspian Sea | Lake | native | 26334 |
Kama | River (basin) | native | 59043 |
Oka | River (basin) | native | 59043 |
Palearctic | Zoogeographic realm | endemic | 26334 |
Terek River | River (basin) | native | 59043 |
Ural | River (basin) | native | 59043 |
Volga | River (basin) | native | 58297 |