Did Indo-European people mostly displace the inhabitants are Europe and why?

authun

Ad Honorem
Aug 2011
5,019
Some years ago researchers into the historical population demographics in northern europe noted, using radio carbon dating of remains, that the initial population growth that followed the introduction of farming at the start of the neolithic was followed by a collapse which lasted, in some parts for a millenium. The period was followed by growth again though it is not known whether this was the old population recovering or the arrival of a new population or populations. Nor was it understood why the population collapsed.

On going research has been more widespread, see below:




And the combined population density for the areas of study is show here:




After the collapse around 5000 bp, there are three cycles two of which probably involved the arrival of metallurgy and also indo europeans. DNA studies show that the most widespread group in today's population arrived in very small numbers, "from zero to absolute majority within a few generations" and so differntial reproductive success has to be investigated. There is not yet enough data to form a picture of what happened but some of the old population survived, females more than males but the majority of the males appear to belong to the new population. Indo european populations are somehow connected with the introduction metallurgy but probably came to europe after it started, to take advantage of it. That is entirely speculative though.
 

authun

Ad Honorem
Aug 2011
5,019
I know we are not supposed to discuss genetics, but if you look along the male line, you will get an exagerated idea of population replacement.
Quite. You can't measure replacement directly when you have differential reproductive sucess. Small groups are often reproductively more successful than some initially larger groups. Establishing why one group thrives while another declines does not show up in the dna, only that it did happen.
 

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