Coefficient of relationship by isonymy between 14 Sardinian villages in the periods 1800-1824 and 1950-1974.
Lasker's coefficient of relationship was calculated between 14 villages in Sardinia in order to estimate biological relationships on the base of common surnames. The data derive from parish marriage registers for the periods 1800-1824 and 1950-1974. Through time, coefficients of relationship between villages are generally higher for neighbouring villages. Moreover, the Ri between values decreases as the geographic distances increase. The negative Pearson product-moment correlation observed between the Ri matrix and the geographic distance matrix is statistically significant (Mantel's test) for the two periods considered. These results suggest that the biological similarity between villages, as shown by isonymy, tends to decrease as the geographic distance increases. In addition, the plots of isonymic relationships obtained by nonmetric multidimensional scaling for 1800-1824 and 1950-1974 show that the biological relationships between neighbouring villages increase in the second period considered.
Sanna
E
E
Università degli Studi di Cagliari, Dipartimento di Biologia Sperimentale, Sezione di Scienze Antropologiche, Cittadella Universitaria, SS 554 (km 4.5), 09042 Monserrato, Italy. sannae@vaxcal.unica.it
Melis
M
M
Floris
G
G
D005190:Family; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007558:Italy; D009275:Names