i live in European part of Russia, so you think when i pass Ural mountains (4 hours by car) and visit Ekaterinburg i meet thousands of Asiatics? Siberia - country with Russian majority, paleo-asiatics live deep in the forest, tundra, Turkic, Mongol, Altaic e.t.c. people, yes they have some weight, hm but Kalmyks that live in European part too...
Tobolsk (West Siberia) - old capital of Siberia
Tobolsk Kremlin
Panorama of Tobolsk
Catholic church
Tobolsk before 1917
Tomsk (East Siberia) - city of students
Siberians - Russians, but sub-ethnos?
So modern Siberia land with european civilization that was brought by Russian Empire, cossaks of Ermak began conquering of this land, then simple merchants, peasants colonised this (as usual desolate but unused) lands, so what the sence of the question?