Hunter–gatherer foraging ranges, migrations, and travel in the middle Holocene Baikal region of Siberia: Insights from carbon and nitrogen stable isotope signatures

Foraging ranges, migrations, and travel among Middle Holocene hunter–gatherers in the Baikal region of Siberia are examined based on carbon and nitrogen stable isotope signatures obtained from 350 human and 203 faunal bone samples. The human materials represent Early Neolithic (8000–6800 cal BP), Late Neolithic (6000–5000 cal BP), and Early Bronze Age periods (∼5000–4000 cal BP) and come from the following four smaller areas of the broader region: the Angara and upper Lena valleys, Little Sea of Baikal’s northwest coast, and southwest Baikal. Forager diets from each area occupy their own distinct position within the stable isotope spectrum. This suggests that foraging ranges were not as large as expected given the distances involved and the lack of geographic obstacles between the micro-regions. All examined individuals followed a similar subsistence strategy: harvesting game and local fishes, and on Lake Baikal also the seal, and to a more limited extent, plant foods. Although well established in their home areas, exchange networks with the other micro-regions appear asymmetrical both in time and direction: more travel and contacts between some micro-regions and less between others. The Angara valley seems to be the only area with the possibility of a temporal change in the foraging strategy from more fishing during the Early Neolithic to more ungulate hunting during the Late Neolithic–Early Bronze Age. However, the shift in stable isotope values suggesting this change can be viewed also as evidence of climate change affecting primary productivity of the Baikal–Angara freshwater system.     

Production sequences of ostrich eggshell beads and settlement dynamics in the Geelbek Dunes of the Western Cape, South Africa

The archaeological record attests to the significance of ostrich eggs as a valuable resource for the people of the Later Stone Age. People over a broad geographic range used ostrich eggs to provide nourishment, storage and ornamentation. This paper focuses on the production, use and discard of ostrich eggshell beads recovered from open-air sites in the Geelbek Dunes of the Western Cape, South Africa. We present a comprehensive production chain for analyzing the manufacture of beads and introduce the concept of a heuristic production value for evaluating the degree of completion reflected by an assemblage. The pattern of fabrication and the distribution in size allow for a detailed analysis of the beads that points to specific behavioral patterns involved in their production. This analysis yields information about the duration and intensity of site use, as well as the individual members and cultural affinities of the groups who made the beads. We document the intentional use of fire to blacken the majority of the beads as an aesthetic choice. Combined with the results from AMS radiocarbon dating, the majority of the beads from Geelbek provide insight into the socio-economic identity of their manufacturers: small groups of hunter–gatherers who inhabited and used specific locations on the strandveld near Langebaan Lagoon.     

The Early Later Stone Age in East Africa: Excavations and Lithic Assemblages from Lukenya Hill

The site of Lukenya Hill, Kenya, is one of the richest Later Stone Age (LSA) sites in East Africa. Its sequence documents the increasing manufacture of microlithic tools, one of the hallmarks of hunter–gatherer behavioral modernity (Bar-Yosef and Kuhn, 1999). This paper presents results of excavations at the LSA site of GvJm62, Lukenya Hill, and analysis of site formation processes on this inselberg rock shelter. It examines lithic assemblages from GvJm62 and four other Pleistocene-dated LSA sites at Lukenya Hill. Differences in raw material use, typology, and chronology indicate that there are three different kinds of LSA industries in the sampled sites at Lukenya Hill. Changes in technology, activities, and land use patterns can explain the differences among these three industries. The Lukenya Hill sequence is compared with other East African LSA industries.Le gisement de Lukenya Hill en Kenya est un des gisements les plus riches du type Paleolithique Superieure en Afrique de l'Est. La sequence demonstre l'éxistence et ensuite le fréquence des outils microlithiques. Cet article présent les résultats des fouilles du gisement de GvJm62 à Lukenya Hill et présent un étude des methodes de formation du gisement. On examine les outils lithiques de GvJm62 et quatre autres gisements à Lukenya Hill. Les differences des types des matières premiers, de la chronologie, et des types d'outils suggèrent qu'il y a trois types d'industrie à Lukenya Hill. On peut expliquer ces differences par changements en la technologie, les activités et les modèles de l'utilisation de la terre. La séquence à Lukenya Hill est comparée avec les autres industries Est Africain.