Intensification in pastoralist cereal use coincides with the expansion of trans-regional networks in the Eurasian Steppe

The pace of transmission of domesticated cereals, including millet from China as well as wheat and barley from southwest Asia, throughout the vast pastoralist landscapes of the Eurasian Steppe (ES) is unclear. The rich monumental record of the ES preserves abundant human remains that provide a temporally deep and spatially broad record of pastoralist dietary intake. Calibration of human δ13C and δ15N values against isotope ratios derived from co-occurring livestock distinguish pastoralist consumption of millet from the products of livestock and, in some regions, identify a considerable reliance by pastoralists on C3 crops. We suggest that the adoption of millet was initially sporadic and consumed at low intensities during the Bronze Age, with the low-level consumption of millet possibly taking place in the Minusinsk Basin perhaps as early as the late third millennium cal BC. Starting in the mid-second millennium cal BC, millet consumption intensified dramatically throughout the ES with the exception of both the Mongolian steppe where millet uptake was strongly delayed until the end of first millennium cal BC and the Trans-Urals where instead barley or wheat gained dietary prominence. The emergence of complex, trans-regional political networks likely facilitated the rapid transfer of cultivars across the steppe during the transition to the Iron Age

An imagined past?: Nomadic narratives in Central Asian archaeology

Nomads, or highly specialized mobile pastoralists, are prominent features in Central Asian archaeology, and they are often depicted in direct conflict with neighboring sedentary peoples. However, new archaeological findings are showing that the people who many scholars have called nomads engaged in a mixed economic system of farming and herding. Additionally, not all of these peoples were as mobile as previously assumed, and current data suggest that a portion of these purported mobile populations remained sedentary for much or all of the year, with localized ecological factors directing economic choices. In this article, we pull together nine complementary lines of evidence from the second through the first millennia BC to illustrate that in eastern Central Asia, a complex economy existed. While many scholars working in Eurasian archaeology now acknowledge how dynamic paleoeconomies were, broader arguments are still tied into assumptions regarding specialized economies. The formation of empires or polities, changes in social orders, greater political hierarchy, craft specialization?notably, advanced metallurgy?mobility and migration, social relations, and exchange have all been central to the often circular arguments made concerning so-called nomads in ancient Central Asia. The new interpretations of mixed and complex economies more effectively situate Central Asia into a broader global study of food production and social complexity.- Geographic Focus of This Discussion - The Nomadic Bias Macrobotanical Data Microbotanical Data Isotope Studies Ethnographic and Ethnohistoric Analogies Sedentary Occupation Structures - Villages and Fortified Sites - Farmsteads (Homesteads) Material Culture Evidence for Economy Nonportable Material Culture Zooarchaeology Written Sources Discussion - Two Millennia of Political Agendas - Arguments Used to Support Nomadic Models Conclusion Comments Repl

The earliest domestic cat on the Silk Road

We present the earliest evidence for domestic cat (Felis catus L., 1758) from Kazakhstan, found as a well preserved skeleton with extensive osteological pathologies dating to 775–940 cal CE from the early medieval city of Dzhankent, Kazakhstan. This urban settlement was located on the intersection of the northern Silk Road route which linked the cities of Khorezm in the south to the trading settlements in the Volga region to the north and was known in the tenth century CE as the capital of the nomad Oghuz. The presence of this domestic cat, presented here as an osteobiography using a combination of zooarchaeological, genetic, and isotopic data, provides proxy evidence for a fundamental shift in the nature of human-animal relationships within a previously pastoral region. This illustrates the broader social, cultural, and economic changes occurring within the context of rapid urbanisation during the early medieval period along the Silk Road

A Dynamic 6,000-Year Genetic History of Eurasia's Eastern Steppe

The Eastern Eurasian Steppe was home to historic empires of nomadic pastoralists, including the Xiongnu and the Mongols. However, little is known about the region's population history. Here, we reveal its dynamic genetic history by analyzing new genome-wide data for 214 ancient individuals spanning 6,000 years. We identify a pastoralist expansion into Mongolia ca. 3000 BCE, and by the Late Bronze Age, Mongolian populations were biogeographically structured into three distinct groups, all practicing dairy pastoralism regardless of ancestry. The Xiongnu emerged from the mixing of these populations and those from surrounding regions. By comparison, the Mongols exhibit much higher eastern Eurasian ancestry, resembling present-day Mongolic-speaking populations. Our results illuminate the complex interplay between genetic, sociopolitical, and cultural changes on the Eastern Steppe

Bioarchaeology in Central Asia: growing from legacies to enhance future research

We review the historical trajectory of bioarchaeology in Central Asia to draw attention to the importance of previous archaeological and biological anthropology research that pioneered large scale systematic excavation and use of technology such as aerial photography. We highlight the political and social biases of past work and how its legacy continues to shape modern practices. We are interested in bringing these dynamics to the attention of western scholars who are increasingly focusing on Central Asian samples for research. Political ideologies, especially during the Soviet period, shaped the study of populations in Central Asia, including centering ethnogenesis as an enduring focus. Current research requires careful work by scholars to contextualize human remains within social and theoretical models of the past that continue to shape everything from access to collections to the organization of departments. Advances in molecular methods have led to an increase in studies of human remains, often focusing on panregional social, dietary, and genetic changes. However, these studies often have small sample sizes and are thinly distributed across the vast expanse of Central Asia. Researchers conducting bioarchaeological research should concentrate on the documentation of biological and material culture at the micro-regional scale to build up models of broader social processes from the bottom-up. Finally, ethical bioarchaeology in the region requires that the contributions of Central Asian scholars past and present be acknowledged and centered, and that training, research, and publication opportunities be provided for Central Asian scholars and communities.Introduction Why central asian Bioarchaeology History of Archaeology and Biological Anthropology in Central Asia Legacies of Central Asian Bioarchaeology - The question of Ethnogenesis - Craniometry - Interpretation of material culture - Biomolecular research Developing Bioarchaeology - Reorienting to a local scale - Collaborative and community led approaches Conclusio

Close management of sheep in ancient Central Asia: evidence for foddering, transhumance, and extended lambing seasons during the Bronze and Iron Ages

Pastoralism in Central Asia directed the utilization of natural resources, yet information on livestock management strategies remain scarce. Carbon (δ13C) and oxygen (δ18O) isotope analyses of domesticated sheep teeth are used to identify animal management strategies. Sheep from Kent exhibit an inverserelationship where low δ18O values coincide with high δ13C values, consistent with the foddering of caprines in the winter for this location which occursalongside evidence for an extended lambing season. At the high altitude encampment of Turgen, Bronze Age sheep exhibit low δ18O values that coincide withhigh δ13C values, suggesting that livestock were moved to low altitude pastures in the winter months. Iron Age sheep sequences also have an inverserelationship, where low δ18O values coincide with high δ13C values, yet high δ13C values in the winter suggest that livestock were foddered. Our findingsindicate variation in livestock management strategies with distinct adaptations to local ecologies

Pasture usage by ancient pastoralists in the northern Kazakh steppe informed by carbon and nitrogen isoscapes of contemporary floral biomes

Identification of variation in pasture use by domesticated livestock has important implications for understanding the scale of animal husbandry and landscape use in modern and ancient societies alike. Here, we explore the influence of pasture floral composition, salinity, and water availability on the carbon (δ13C) and nitrogen (δ15N) isotopic composition of plants from the steppes of Kazakhstan. Our findings demonstrate geospatially defined differences in the isotopic composition of sedge marshes, saline marshes, and meadow steppes, information which we then use to inform animal management strategies used in the past. We then examine pasture usage by ancient livestock through carbon and nitrogen isotope analyses of bone collagen from animals that grazed in the northern Kazakh steppe. Pasturing strategies varied according to livestock taxa, with horses exhibiting lower δ13C and δ15N values relative to cattle, sheep, and goat. We argue that horses, which are highly mobile and freely graze over pastures extending over wide areas, were grazed under an extensive pasturing system. These data suggest that the isotopic composition of contemporary vegetation communities can help inform animal management strategies used in the past

Life in the fast lane: Settled pastoralism in the Central Eurasian Steppe during the Middle Bronze Age

Abstract Objectives We tested the hypothesis that the purported unstable climate in the South Urals region during the Middle Bronze Age (MBA) resulted in health instability and social stress as evidenced by skeletal response. Methods The skeletal sample (n?=?99) derived from Kamennyi Ambar 5 (KA?5), a MBA kurgan cemetery (2040?1730 cal. BCE, 2 sigma) associated with the Sintashta culture. Skeletal stress indicators assessed included cribra orbitalia, porotic hyperostosis, dental enamel hypoplasia, and tibia periosteal new bone growth. Dental disease (caries, abscess, calculus, and periodontitis) and trauma were scored. Results were compared to regional data from the nearby Samara Valley, spanning the Early to Late Bronze Age (EBA, LBA). Results Lesions were minimal for the KA?5 and MBA?LBA groups except for periodontitis and dental calculus. No unambiguous weapon injuries or injuries associated with violence were observed for the KA?5 group; few injuries occurred at other sites. Subadults (<18 years) formed the majority of each sample. At KA?5, subadults accounted for 75% of the sample with 10% (n?=?10) estimated to be 14?18 years of age. Conclusions Skeletal stress markers and injuries were uncommon among the KA?5 and regional groups, but a MBA?LBA high subadult mortality indicates elevated frailty levels and inability to survive acute illnesses. Following an optimal weaning program, subadults were at risk for physiological insult and many succumbed. Only a small number of individuals attained biological maturity during the MBA, suggesting that a fast life history was an adaptive regional response to a less hospitable and perhaps unstable environment

Sampling and pretreatment of tooth enamel carbonate for stable carbon and oxygen isotope analysis

Stable carbon and oxygen isotope analysis of human and animal tooth enamel carbonate has been applied in paleodietary, paleoecological, and paleoenvironmental research from recent historical periods back to over 10 million years ago. Bulk approaches provide a representative sample for the period of enamel mineralization, while sequential samples within a tooth can track dietary and environmental changes during this period. While these methodologies have been widely applied and described in archaeology, ecology, and paleontology, there have been no explicit guidelines to aid in the selection of necessary lab equipment and to thoroughly describe detailed laboratory sampling and protocols. In this article, we document textually and visually, the entire process from sampling through pretreatment and diagenetic screening to make the methodology more widely available to researchers considering its application in a variety of laboratory settings