Managing the risk of climatic variability in late prehistoric northern Chile

The concept of risk management encompasses the diverse strategies employed in preventing and mitigating losses associated with social and environmental calamities. Building on the growing literature on risk, we use archaeological data from the Tarapacá Valley, located in northern Chile, to document the risk-reduction tactics mobilized by the valley’s inhabitants to navigate the increasingly volatile environmental and social conditions of the Late Intermediate Period (AD 1000–1450). With the onset of exceptionally unpredictable environmental conditions after AD 1100, residents of the Tarapacá Valley chose strategies such as increased trade and agricultural diversification and extensification to minimize shortages in staple resources. Threats of raiding and intra-community strife exacerbated the risks associated with subsistence shortfalls. Valley communities elected a number of strategies to curtail conflict-induced risk, including movement of settlements and field systems to defensible locations, construction of walls and other defensive features, and the introduction of plazas. Rock art data suggest that trade was increasingly embedded in ritually sanctioned events involving groups from different ecological zones. While studies of risk have focused disproportionately on environmental hazards, subsistence-related crises are often compounded by social hazards that require their own risk-mitigating strategies, further constraining options for coping with subsistence stress.     

Focused,intense and long-term: evidence for granular ark (Anadara granosa) exploitation from late Holocene shell mounds of Blue Mud Bay,northern Australia

Explanatory frameworks relating to the appearance of shell mounds and the exploitation of molluscs (particularly the sand/mudflat bivalve Anadara granosa) during the late Holocene have tended to emphasise stasis and continuity. Very few analyses have adequately investigated the intensity of human predation during the mound period and the potential effects on the particular prey species. To this end, the biological and ecological characteristics of A. granosa, the dominant molluscan species for much of the known period of occupation in the region, are considered in detail, in combination with assessing the potential for human impact through predation via the measurement of 9106 A. granosa valves from three shell mounds. In explaining long-term economic change in this region of northern Australia, the focus has been placed on the analysis of relative changes and trends through time in prehistoric resource exploitation.     

Historical ecology of late Holocene sea otters (Enhydra lutris) from northern British Columbia: isotopic and zooarchaeological perspectives

We examined the isotopic composition (δ¹³C and δ¹⁵N) of sea otter (Enhydra lutris) bone collagen from ten late Holocene (ca. 5200 years BP–AD 1900) archaeological sites in northern British Columbia (BC), Canada. Because sea otters are now extinct from much of this region and have not fully recolonized their former range (e.g. Haida Gwaii and most of northern BC) these data represent an important first step towards better understanding sea otter foraging ecology in BC. The isotopic data suggest a diet composed primarily of benthic invertebrates, with a very low reliance on epibenthic fish. There is very low isotopic and thus inter-individual dietary variability in Holocene BC sea otters during the late Holocene. Furthermore, zooarchaeological abundance data suggest that otters represented a widespread and significant focus of aboriginal hunting practices on the northern BC coast during the mid- to late-Holocene. The consistent reliance on a small number of low-trophic level prey and limited dietary variability in Holocene BC sea otters may reflect top-down impacts on otter populations by aboriginal peoples. As part of our assessment of sea otter diet, we review trophic discrimination factors (Δ¹³C and Δ¹⁵N) for bone collagen from published literature and find marked variability, with mean values of +3.7 ± 1.6 for Δ¹³C (n = 21) and +3.6 ± 1.3 for Δ¹⁵N (n = 15).     

Serpentine Hot Springs,Alaska: results of excavations and implications for the age and significance of northern fluted points

The dispersal of Homo sapiens across the New World is one of the greatest chapters in the history of our species; however, major questions about this late Pleistocene diaspora remain unanswered. Two contentious issues are the timing of colonization of the Bering Land Bridge and origin of Clovis, which at 13,000 calendar years ago is the earliest unequivocal complex of archaeological sites in temperate North America, known by its specialized fluted spear points. One hypothesis is that fluting technology emerged in Beringia and from there was carried southbound, with fluted points becoming the diagnostic “calling card” of early Paleoindians spreading across the Western Hemisphere. Fluted points have long been known from Alaska, yet until now they have never been found in a datable geologic context, making their relationship to Clovis a mystery. Here we show that a new archaeological site at Serpentine Hot Springs, Bering Land Bridge National Preserve, Alaska, contains fluted points in a stratified geologic deposit dating to no earlier than 12,400 calendar years ago. Our results suggest that Alaska's fluted-point complex is too young to be ancestral to Clovis, and that it instead represents either a south-to-north dispersal of early Americans or transmission of fluting technology from temperate North America. These results suggest that the peopling of the Americas and development of Paleoindian technology were much more complex than traditional models predict.     

The development of the longbow in late medieval England and ‘technological determinism’

Traditional understandings of the development of the medieval English longbow and its role in the fourteenth-century ‘infantry revolution’ have recently been challenged by historians. This article responds to the revisionists, arguing based on archaeological, iconographic and textual evidence that the proper longbow was a weapon of extraordinary power, and was qualitatively different from – and more effective than – the shorter self-bows that were the norm in England (and western Europe generally) before the fourteenth century. It is further argued that acknowledging the importance of the weapon as a necessary element of any credible explanation of English military successes in the era of the Hundred Years War does not constitute ‘technological determinism’.     

Early Holocene land snail exploitation in northern spain: the case of La Fragua cave

Abstract

The question of the anthropic or natural origin of land snail deposits within the archaeological record is the subject of debate all over the world. In the Cantabrian region of northern Spain land snail middens are routinely identified in the early Holocene archaeological record. La Fragua Cave (Cantabria, Spain), which contains an early Holocene layer dated to 9600±140 BP (10,932±196 cal BP), offers the opportunity to address this debate through the examination of Cepaea nemoralis (Linnaeus) land snails recovered in direct association with mammal bones, charcoal, lithic artefacts and other materials. It is therefore believed that their presence at the site is clearly anthropic in origin. In addition, the exploitation patterns indicate an occasional collection and consumption of land snails, which confirms the complementary character of these resources in the diet of hunter-gatherers in Cantabrian Spain during the Pleistocene-Holocene transition.     

The accuracy of enclosure estimates: some evidence from northern England

Michael Turner's edition of Tate's Domesday draws upon the uneven estimates provided in enclosure acts and awards. For 35 sample acts and awards in Cumberland, Durham, Northumberland and Westmorland estimates of the acreages enclosed are compared with actual acreages of land allotted. Estimates in early acts are less accurate than in later acts, and estimates for parishes where only small areas were enclosed are proportionately less accurate than those for which large areas were enclosed.     

Humans and marine resource interaction reappraised: Archaeofauna remains during the late Pleistocene and Holocene in Cantabrian Spain

The exploitation of marine resources in Prehistory has traditionally been regarded as insignificant, at least until the late Upper Pleistocene. However, in recent years the systematic study of archaeofaunal remains with a marine origin has widened our knowledge of the role they played among groups of hunter–gatherers in Europe. This paper analyses the available data about the evidence for the exploitation of the different marine resources (molluscs, birds, mammals, crustaceans, echinoderms and fish) that have been recorded at archaeological sites in Cantabrian Spain in the late Pleistocene and early Holocene.With the information currently available, it is clear that although it is in the Mesolithic when archaeozoological remains with a marine origin are found most often, the exploitation of these resources in the region began in the Early Upper Palaeolithic.     

A late Holocene pollen record from Lake Almalou in NW Iran: evidence for changing land-use in relation to some historical events during the last 3700 years

A pollen diagram was prepared from Lake Almalou, a volcanic crater wetland located on the eastern flanks of the Sahand Volcanic Complex in NW Iran. The core provides a 3700-year record of human activity and environmental change in an upland region. We attempt to relate vegetation changes to both climatic change and historical events. Variations of anthropogenic pollen indicators suggest several phases of intensified human activities. Two strongly expressed agricultural phases are dated at about 2450–2220 cal BP (Achaemenid Empire) and 230–30 cal BP (collapse of Safavid Dynasty to the modern period). Historical rather than climatic events appear to be the main controlling factors for upland land-use dynamics. Fruticulture has been practiced in the region at least since the Iron Age, reaching its maximum importance 1500–1250 cal BP during the reign of Sassanid Empire; it declined by the time of Islamic conquest of Iran (651 AD). The Little Ice Age is tangibly recorded by higher lake water levels most probably due to both lower summer temperatures and higher annual precipitations. Low values of cereal-type and cultivated tree pollen during this period may indicate a change in the lifestyle from the cultivation of fields and orchards to a more nomadic life dominated by summer pasture. The modern period (1850 AD onwards) is characterized by expansion of agricultural activities to upland areas and intensified pastoralism.     

The origins of lithic projectile point technology: evidence from Africa,the Levant,and Europe

Projectile weaponry is a human cultural universal, but its origins and antiquity remain poorly understood. Stone- and bone-tipped projectile weapons have long been treated as emergent features of the "Upper Paleolithic" behavioral revolution. Recently it has been proposed that projectile technology was in widespread use among Homo sapiens populations in Africa during Middle Stone Age (MSA) times. One obstacle to researching the origins of projectile point technology is that the criteria archaeologists employ for recognizing plausible and implausible stone projectile points are largely subjective (overall tool shape, microwear traces). Tip cross-sectional area (TCSA) is a ballistically significant dimension that works well at discriminating North American stone projectile points (spearthrower dart tips and arrowheads) from spear points. This paper compares the TCSA values of ethnographic North American stone projectile points to hypothetical Middle and Upper Paleolithic stone projectile points from Africa, the Levant, and Europe. The results of this comparison do not support the hypothesis of widespread use of stone-tipped projectiles in Africa, the Levant, or Europe prior to 40 Ka. In the New World and in Australia, where we have the richest ethnographic record of stone projectile point use, these implements are largely employed in big-game hunting and in warfare. One or both of these factors may have played a role in the widespread adoption of stone projectile point technology after 40 Ka.     

Monks and lay communities in late antique Gaul: the evidence of the Eusebius Gallicanus sermons

The Eusebius Gallicanus sermons reveal the congruity in late antique Gaul between the models of pastoral care for monks and lay Christians. For these Gallic clergy, there was little antagonism between monastery and world. Preachers to both audiences share a common central concern with the defence of community and in this respect they differ from some of their contemporaries. The sermon collection demonstrates that the ascetic world in Gaul was far from monolithic and that pastoral care could be highly individualised and responsive to the demands of local communities.     

Palaeopathology in late Pleistocene and early Holocene Central Plains bison: dental enamel hypoplasia,fluoride toxicosis and the archaeological record

Multiple formative agents are cited for dental enamel hypoplasia (DEH) in modern and fossil mammals. Here, four late Pleistocene-early Holocene bison assemblages from the Central Great Plains are analyzed for DEH and other bone pathologies to investigate the possible influence of chronic fluoride toxicosis, a condition that may have presented a long-term source of duress for prehistoric bison and devalued them as nutritional resources to human hunters. Although DEH is present in all the analyzed assemblages, the lack of corroborating dental and post-cranial anomalies consistent with chronic fluoride toxicosis speaks against it as a primary factor of DEH formation or general ill health in these bison. Rather, maternal nutritional stress, weaning, and seasonal forage condition are invoked as probable promoters of DEH formation. Other identified abnormalities are discussed in reference to their contribution to reduced feeding efficiency and lameness, as are their roles in developing palaeoecological models applicable to archaeological questions about ancient human lifeways.     

Hunting strategies in the Late Glacial of northern Europe: A survey of the faunal evidence

Presented here is a general overview of the evidence concerning the procurement strategies in the Late Glacial of northwestern Europe. Their rich faunal assemblages make Stellmoor and Meiendorf, in northern Germany, key sites in this respect. Both may be considered specialized reindeer hunting camps. A survey of the hunting techniques and exploitation patterns reflected by the material from these sites emphasizes the differences between the Hamburgian and the Ahrensburgian economies.     

Bois Laiterie revisited: functional,morphological and technological analysis of a Late Glacial hunting camp in north-western Europe

Previous exhaustive analysis of the remains at Bois Laiterie Cave resulted in the classification of this site as a Magdalenian hunting camp. However, during recent analysis of usewear-traces on selected artefacts, one of the authors [KS] noticed in the collection numerous backed points which are rather untypical for the classical Magdalenian. In light of this, a typological and technological reinvestigation of the Bois Laiterie assemblage was undertaken. Here, we present the results of this investigation and the traceological analysis. Further, implications of these results for the interpretation of the chronological, archaeo-cultural and functional position of the Bois Laiterie site within the context of the north-western European Late Glacial are discussed.     

Archaeological prospection of a high altitude Neolithic site in the Arctic mountain tundra region of northern Sweden

During the summer of 2008 archaeological excavations and geophysical prospection surveys were carried out in the mountain tundra region of north-eastern Sweden. The investigations focused on locating settlement remains connected with a Middle Neolithic tool production site discovered by archaeologists in 2001.     

Late Holocene subsistence and social integration in Sierras of Córdoba (Argentina): the South-American ostrich eggshells evidence

Zooarchaeological research carried out on South-American ostrich eggshells from late pre-Hispanic site Arroyo Talainín 2 (ca. 1100–300 BP, Sierras of Córdoba, Argentina) is presented in this paper. The resource importance has been assessed focusing mainly on its economic and political dimensions for social-unit integration rather than its classical use as a seasonal indicator. Eggshells taxonomic identification was performed by quantifying shell-pore density, and determining two Rheidae species: greater rhea (Rhea americana) and lesser rhea (Rhea pennata). High frequencies of burned eggshell fragments indicate an unequivocal association between this resource and the human occupations recorded at this site. Regional-scale data suggests that egg consumption took place disassociated from the main-residential camps. These locations were rock-shelters occupied by small-dispersed household groups or large-group food processing and consumption sites such as Arroyo Talainín 2. Thus, a flexible approach for a food-consumption study is required to account for its spatial dimension. Only a regional-scale archaeological research will allow advances to be made in our understanding of the subsistence patterns and socio-political organization of late pre-Hispanic human societies.     

The relative abundance of Onthophagus species in British assemblages of dung beetles as evidence for Holocene climate change

Abstract

The ratio between scarabaeid beetles of the genera Aphodius and Onthophagus in European dung faunas is influenced by summer climate, such that individuals of Aphodius species predominate in Northern Europe but are largely replaced by Onthophagus species in the Mediterranean region. Detailed study of insect assemblages from Neolithic to Saxon date showed a changing ratio between the genera with time. For the Neolithic and most of the Bronze Age, individuals of Onthophagus contributed around 16% of the sum of Aphodius and Onthophagus, but during the Iron Age the proportion of Onthophagus fell to around 3% and remained low. This decline of Onthophagus was probably the result of a slight cooling of mean summer temperature and agricultural intensification. However, the proportion of Onthophagus peaked at over 60% during the middle Bronze Age around 1450 BC. This is argued as reflecting a brief warm episode with mean July temperatures for Central Southern England at least 2°C warmer than at present.     

Clovis biface technology at the Topper site,South Carolina: evidence for variation and technological flexibility

The Topper site in the South Atlantic Coastal Plain of South Carolina provides a rare glimpse of the entire range of Clovis tool manufacture. Topper is a quarry-related site along the Savannah River with an outcrop of Coastal Plain chert and a buried Clovis component. This paper focuses on the 174 bifaces and diagnostic debitage from recent excavations to understand biface production at Topper. I present the process of manufacture then measure the variation in production characteristics at the site in terms of our current knowledge of Clovis biface technology. I conclude that Topper flintknappers used reduction strategies typical of Clovis-period tool production but created a biface assemblage with greater flexibility in design than documented at most other Clovis sites. This variation in biface production suggests greater variability in Clovis behavior across America—Clovis groups adapted to local resource conditions and adjusted the organization of their technology accordingly.     

Drivers of technological richness in prehistoric Texas: an archaeological test of the population size and environmental risk hypotheses

This paper reports a study that sheds light on an issue that is important for understanding human behavioral evolution—the factors that influence hunter-gatherers’ decisions regarding the number and degree of specialization of their tools. Two primary drivers of technological richness and complexity have been proposed in the anthropological literature: population size and environmental risk. In general, ethnographic studies tend to support environmental risk as the primary driver, whereas the limited number of archaeological studies that have been carried out seem to support population size. These findings are difficult to reconcile because problems exist for both sets of studies. The present study was designed with these problems in mind. We used an archaeological dataset to test which of the hypothesized driving factors—population size or environmental risk—best explains changes in technological richness. More specifically, we investigated whether changes in the number of point types in Texas from the first occupation more than 13,000 years ago to the Late Prehistoric period, around 400 years ago, are better explained by environmental risk or by population size. Bivariate correlations and a generalized linear model indicate that temporal changes in point-type richness in Texas are significantly associated with changes in one of our proxies of risk—global temperature. We found no relationship between temporal changes in point-type richness and changes in population size. Thus, the results derived from this study are consistent with the environmental risk hypothesis and inconsistent with the population size hypothesis.