Diet in transitory society: isotopic analysis of medieval population of Central Europe (ninth–eleventh century AD,Czech Republic)

Dietary behavior in the context of the formation of state structure, Christianization, and significant urbanization was studied, using the Great Moravian Empire (ninth–tenth century AD, Czech Republic) as a representative example. We also analyzed the impact of the disruption of social structure at the beginning of the tenth century and subsequent recovery of society during the eleventh century. Carbon and nitrogen isotopic values were measured in 189 adults (both sexes) and 74 animals representing different socioeconomic contexts (power centers/hinterlands) and chronology (Great Moravian/Late Hillfort period). Statistically significant differences in animal protein consumption were observed between centers and hinterlands. For centers, significant relationship was found between nitrogen isotopic values and socioeconomic status in males but not for females. Diachronic diet changes were observed, with the eleventh century diet characterized by higher millet consumption in both sexes and lower consumption of animal protein in males. These results confirm that Great Moravia represented a highly stratified society socioeconomically. Social status appears to determine the consumption of animal protein much more in males than in females. The diet of females also proved to be more uniform in the diachronic frame. The diachronic change in dietary behavior suggests that through the apparent recovery in the eleventh century, Moravian society did not reach its original level of welfare at least in terms of the quality of diet.     

Body mass estimation in skeletal samples using the hybrid approach: the effect of population-specific variations and sexual dimorphism

Body mass is estimated from skeletal records with low accuracy, and it is expected that population-specific equations derived by a hybrid approach may help to reduce the error in body mass estimates. We used 204 individuals from five Central European Early Medieval sites to test the effect of population-specific femoral head breadth equations on the accuracy of body mass estimates. The baseline for living body mass was computed using the biiliac breadth and stature. We also analyzed the agreement of five general femoral head techniques that are used in body mass estimation (Elliott et al. (Archaeol Anthropol Sci 1–20, 2015b; Grine et al. (Am J Phys Anthropol 97:151–185, 1995); McHenry (Am J Phys Anthropol 87:407–431, 1992); Ruff et al. (Am J Phys Anthropol 148:601–617, 2012); Ruff et al. (Am J Phys Anthropol 86:397, 1991)). Our results support previous findings showing that body mass is predicted with lower accuracy than stature, even when population-specific equations are derived. However, the population-specific approach increases the agreement with the body mass estimated from the biiliac breadth and stature, particularly when sex-specific equations are used. Thus, our results advocate for the employment of sex-specific equations when possible and show that the possibility of deriving equation for each sex separately is the main advantage of the population-specific approach. The best agreement among the body mass techniques in the Central European Early Medieval samples was observed using the femoral head equations reported by Ruff et al. (Am J Phys Anthropol 148:601–617, 2012) and McHenry (Am J Phys Anthropol 87:407–431, 1992), whereas other studied equations provided lower agreement. The particularly low performance obtained using the technique reported by Elliott et al. (2015b) questioned the use of their equations to estimate body masses.     

Regional Polarization under Transition: The Case of Slovakia

This paper analyses trends in regional polarization in Slovakia on the NUTS II and NUTS IV levels for the period 1985–2002 from the neo-classical and polarization approaches to regional development. Development of disparities in regional incomes was examined via an econometric model. The model was based on extensive datasets from Slovak districts for the period 1985–2002. It identified unemployment rates, urbanization rates, shares of population with university degree and share of foreign investors in total enterprises as major factors behind regional divergence. Strong polarization between Bratislava and the rest of the country was the most remarkable feature of regional development after 1989.