Dear H. Barış,

Its correct name is Chekanovsky–Sørensen index. Better to use it for the areas that are more or less equal or the same biogeographical category. If the difference is too serious better to use the Shimkevich-Simpson index along with the Jaccard index. This approach allows you to evaluate the degree of impoverishment of one fauna relative to another. The mean value of these two coefficients can show for the compared faunas possibility to construct similarity dendrograms in various regions.

Andrey

Yes, Yuriy, I just wanted to note two authors of the index! I saw both versions of polish name in sci publ. May be in this case pronounce and rules of English grammar are important as original pub was in German (so, Index smtms is marked like Cz).

Czekanowski, J. (1909). Zur differentialdiagnose der Neandertal Gruppe. Korrespondenzblatt der deutschen Gesellschaft für Anthropologie. Ethnologie und Urgeschichte, 40, 44–47.

My GGDaddy name was Kaznowski but my uncle lived in the USA and his name spelling was Kaznowsky. But these are detailes.

Interestingly that Cz was really international scientist of Polish origin. He worked except of Poland in Lithuania, Germany, Russia and about 30 years in West Ukraine (Lviv) (was a part of Poland this time). I tried to find once in Lviv (Lwiw) library his famous paper cited above that had been written after expedition into Africa but failed...

My GDaddy new him personally!!! as he was a student at the university where studied theology and Cz tought him anthropology. Meanwhile Cz speaking perfectly several languages and not bad Ukrainian.

Granddad new as well perfectly Prof. Grushevsky (First president of Ukraine) who tought him The History of Ukraine. It was two disciplines this period in History and it was as well The History of Rusins....

Just some interesting notes...

Andrey