[n = 12]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| 1900-1924 | Not specified | Netherlands | established | no data |
| unknown | Unknown | Russian Fed. | not established | unknown |
| unknown | Unknown | Norway | unknown | unknown |
| unknown | Unknown | France | unknown | |
| unknown | Unknown | Belarus | unknown | |
| unknown | Unknown | Ukraine | unknown | |
| 1957 - 1959 | Former USSR | Romania | probably established | probably none |
| 1880 - 1889 | Northern Europe | United States of America | not established | unknown |
| 1872 | Unknown | USSR | not established | |
| 1889 | Unknown | Czech Republic | not established | no data |
| 1955 | Poland | Hungary | not established | unknown |
| 1959 | Unknown | Kazakhstan | unknown |