I assume its somewhere around here
when I said you assume, I was talking about exact spread of I2a2 as it is not known...
e.g. you talk about Doclea, and not about Serbia, but Serbia has much more I2a2 than Doclea... also there is no data for Dalmatia except for area of Narentania / Pagania... no data at all for the place where Croats initially settled (
http://www.euratlas.net/history/europe/700/entity_1523.html ) ... sampling was not done there..it was done in Dubrovnik, Zagreb, Osijek, Delnice, Zabok, Pazin, on Krk, Hvar, Brac and Korcula in Croatia... now I2a2 is in Croatia over 55% in islands of Hvar, Brac and Korcula
all the 3 islands in south Croatia (Hvar, Korcula , Brac) with over 55% I2a2 were part of Pagania as your map shows as well, while Dubrovnik is even more south Zachlumia on your map (btw, samples from Herzegovina Croats were also mostly from Zachlumia and Pagania)...... now people from Pagania (also called Narentania) are in early history recorded as unbaptized Serbs
http://en.wikipedia.org/wiki/Pagania
I2a2 is also relatively high in Osijek (up to 30%) and in Dubrovnik, and in Zagreb (normal due to big imigration), but is scarce in Istra, Krk, Zagorje...
now what Croats did is came up with 42% by taking around half samples from 3 scarcely populated islands in south Croatia (where all together like 40 thousand people live and where I2a2 is over 55%) together with half of samples from the rest of Croatia (where more than 4 milion people live)...
and they also made diagrams where they interpolated data so that I2a2 looks high in Dalmatia due to Pagania and looks high in Slavonia due to Osijek and Zagreb (while small town just bit north of Zagreb has almost no I2a2 at all) .... but truth is there is no data at all for area that is in your map Dalmatia and is supposed settlement area of Croats... before supposed settlement of Croats there lived Illyrian/Pannonian/Celtic (different sources use different attribute) tribe Dalmatae ...
Also are you trying to explain the 70% of I2a2 in Herzegovina by Oseriates?
No, with Ardiaei, Sardeates, Narentanes... note that Scordisci, Sardeates ... could easiy been proto-Serb related tribal names and I2a2 carriers .... later the (perhaps the same) inhabitants of the area are called Narentanes (due to river Neretva around which they live) and also Pagani because they are unbaptized /pagan Serbs..
Oseriates are just example that previous inhabitants might have spoken Slavic-alike language... and that your argument might not hold..
btw. here are some maps (classification is bad though) from wikipedia
prior to Roman conquest:
year 6 AD (time when Strabo sees there only Pannoni and no Illyrians):
according to Strabo
The Breuci, Andizetii, Ditiones, Peirustæ, Mazæi, Daisitiatæ, whose chief was Baton, and other small obscure communities, which extend to Dalmatia, and almost to the Ardiæi to the south, are Pannonians.
http://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.01.0239:book=7:chapter=5&highlight=
I'm sure if more research was done in the area I2a2 would come up in large numbers in many other place around the original home land of Serbs/Croats in the Balkans.
perhaps for Serbs... I am not so sure about Croats...
Most Serbs living in Serbia proper today can trace their linage back to the areas of Herzegovina, Montenegro, Bosnia, or Raska.
ok, but I2a2 is 38.5% % in Serbia and 29.2% in Montenegro...so, how can immigration from Montenegro increase I2a2 in Serbia.. it can only lower it..
btw. Doclea is more east part of Montenegro where I2a2 is likely to be less... while west part is related to Herzegovina
Linguistically the most correct form of Serbian and Croatian is spoken in the areas of high I2a2 concentration and from where the standardization of both language was founded upon.
and what are those areas? Serbia and Croatian part of Hercegovina?
It would be interesting if I could show the linguistic differences that existed in the Western Balkans only a hundred years back. They would clearly outline the origin of Serbs/Croats in the Balkans with relation to other Slavs, but unfortunately with the standardization of the language these linguistic gaps have been bridged.
ok, here's the map... let's hear your explanation (since it is easy)
first, stokavian dialects of serbo-croatian:
than 3 different dialects (or languages) of Croatian
if you look at chakavian areas (blue on map), I2a2 is like 55% on south most and like 10% on north most... in kaikavian area is almost no I2a2 except in Zagreb as it is capital and had strong imigration from I2a2 reach areas......