The logic of the herd: A computer simulation of archaeological herd structure

The advent of new techniques of dental ageing has permitted inferences about the age-structures of ancient animal populations on the basis of faunal remains. Unfortunately, inference from archaeological populations of faunal elements to the age-structure of ancient herds is fraught with both sampling problems and logical difficulties. The relationship between a living herd—a dynamic system characterized by growth—and a static archaeological population is more complex than that assumed by current models based on kill-off patterns and survivorship curves. Using a computer simulation, these logical relationships are explored, and the effects of herd growth on the composition of live and death populations are evaluated. By employing the simulation within a deductive framework, constrained by ethnographically derived criteria for reproduction, mortality, and economic viability in the Near East, it is possible to determine whether certain archaeological kill-off patterns could represent viable herding systems. Examples were found to vary widely in terms of both demographic plausibility and economic viability. Some implications for the possible course of ova-caprine domestication in the Near East are discussed.     

The emergence of status inequality in intermediate scale societies: A demographic and socio-economic history of the Keatley Creek site,British Columbia

Explaining the emergence of status inequality in human societies is an important priority for many anthropological archaeologists, particularly those whose research includes intermediate scale societies (complex hunter–gatherers and early agriculturalists). Yet, fine grained records of emergent inequality are still exceedingly rare. This paper outlines a fine-grained record of cultural change from the Keatley Creek site, a complex hunter–gatherer village in British Columbia, in which it is possible to recognize the emergence of inequality and its demographic and economic correlates. Results of the study suggest that status inequality emerged abruptly after an extended period of socio-economic stability in the village under conditions of adversely altered resource conditions, demographic packing, and subsistence resource diversification and extensification.     

Hunting intensification and the Hohokam “collapse”

The role of long-term demographic stress in the “collapse” of the Hohokam culture of southern Arizona is an open question. If chronic imbalances between population levels and food production, as opposed to catastrophic events, were key factors in the population decline of the 15th century, then the archaeological record should produce evidence for resource stress prior to the near-abandonment of the region. It is difficult to document resource depression in archaeofaunas from southern Arizona, however, because they are dominated by small game throughout the agricultural sequence. Furthermore, in an ecologically and economically diverse region, it is difficult to apply data from an individual site to a region-wide phenomenon like the Hohokam demographic decline. This study uses data from 85 faunal assemblages to explore hunting strategies from the earliest agricultural villages to the cessation of archaeologically visible occupation of the region. One means of hunting intensification employed by the Hohokam was to diversify beyond a focus on staple rabbit species, through the use of fish, birds, artiodactyls, and smaller terrestrial game. Diversification is measured in this study through evenness indices. These indices suggest that demographic stress was increasing in the dense population centers of the Salt and Gila River basins prior to the “collapse.”     

The evolution of human culture during the later Pleistocene: Using fauna to test models on the emergence and nature of “modern” human behavior

It has often been argued that the success and spread of modern humans ∼50,000 years ago was due to a series of key behavioral shifts that conferred particular adaptive advantages. And yet, particularly during the African Middle Stone Age (MSA), some of these “modern” behaviors see only patchy expression across time and space. Recent models have proposed a link between the emergence of modern behaviors and environmental degradation and/or demographic stress. Under these models, modern behaviors represent a form of social/economic intensification in response to stress; if this were the case, signs of subsistence intensification should be more common during periods in which these behaviors are manifested than when they are not. In order to test these models, I analyzed faunal remains from Sibudu Cave (South Africa), focusing on the Howieson’s Poort (HP), a phase in which modern behaviors are evidenced, and the post-HP MSA, when classical signatures of such behavior have disappeared. Significant variability in hunting behavior was identified. While much of this variability appears to correspond with changes in the local environment, evidence for resource stress was more common during the HP. The implications of these results to our understanding of the evolution of human culture are discussed.     

Intensification revisited: assessing resource specialization at Crystal River (8CI1) and Roberts Island (8CI41), Florida

ABSTRACT

Archaeologists typically associate resource intensification with population expansion, environmental change, and political strategizing. Many Late Woodland and Mississippian societies of the Southeast eschewed dietary diversity in favor of harvesting fewer types of resources that could meet the subsistence demands of incipient aggregation. Foods such as maize and shellfish can provide humans with predictable caloric yields and are amenable to control by individuals or corporate groups. However, some archaeologists have identified scenarios in which small-scale societies intensified resources in the absence of population growth and social inequality. Ritual economies can periodically place high demands on the materials used for gatherings and ceremonies. These events then may leave material residues of economic intensification, which archaeologists might easily mistake as evidence for population expansion or social evolution. We use diversity and equitability estimates of zooarchaeological deposits from Crystal River (8CI1) and Roberts Island (8CI41), Florida, to demonstrate that some Woodland period societies periodically intensified their use of resources amidst population decline and heightened ritual activity. We suggest that the inhabitants of the area harvested shellfish at increasingly high rates to provide the material basis for a series of ritual interventions that aimed to circumvent the effects of rapid social and ecological change.     

Tethered mobility and riparian resource exploitation among Neolithic hunters and herders in the Galana River basin,Kenyan coastal lowlands

Abstract

Human activity along the Galana River inside Tsavo National Park, Kenya extends from 6000 years BP until at least 1300 years BP. This time period in East Africa predates and includes the Pastoral Neolithic – geographically and temporally linked early cattle-herding cultures comprised of autonomous communities with loose cultural connections to one another. Data from some sites located in the Great Rift Valley, Lake Victoria Basin and Central Kenyan Highlands indicate that after 3000 years BP, residential mobility patterns increased and pastoralists adopted a strong dependence on maintaining and culling herds of domesticated animals. This pattern is not borne out in Tsavo, where artefact analyses indicate that people had restricted mobility and relied primarily on exploitation of an endoaquatic resource base. This study hypothesises that subdecadal periodicity in El Niño/Southern Oscillation index (ENSO) along with a general trend toward aridification of East African landscapes provided the environmental backdrop for a subsistence regime focused primarily within riparian environments of the Coastal Lowlands region.     

Intensification of shellfish exploitation: evidence of species-specific deviation from traditional expectations

As modern humans grapple with the repercussions of their extensive environmental impacts, archaeologists are increasingly looking toward the past to understand the nature and extent of prehistoric human impact on the environment. Many researchers rely heavily on archaeological correlates of resource intensification as a proxy measures of resource depletion, a profound and often catastrophic human impact. However, the traditional conceptualization of the archaeological correlates of shellfish intensification disregards a large amount of species-specific variation. This paper presents archaeomalacological data from Santa Cruz Island, California. The shell midden deposits CA-SCRI-480 contain a high density of Tivela stultorum (Pismo clam). Statistical analysis of the shellfish assemblage reveals significant variation in both the size and quantity of Pismo clam that people collected through time. This paper investigates this unique patterning with due consideration of the natural ecology and life history of the species and illustrates species-specific deviation from the traditional archaeological correlates of shellfish intensification. Increased collaboration with ecologists and biologists can help refine models of intensification when necessary in order create more sophisticated understanding of prehistoric human–resource interactions.     

Political economy,demography and development in Australia's Northern Territory

The Canadian ‘staples thesis’ literature has documented both the risks (in the tradition of Harold Innis) and the opportunities (in the tradition of W. A. Macintosh) inherent in economies that are dependent on the export of minimally processed natural resources. The key risk is that of retarded long‐term growth as a result of a lack of diversification and over‐dependence on foreign capital and markets. This article argues that the demographic consequences of staples approaches to development also make it difficult to achieve diversification. It profiles Australia's Northern Territory as an example of a mining‐dependent (fiscal) economy that demonstrates a particular demographic profile consistent with what might be expected of a resource frontier. The article argues, however, that restrictive demographic characteristics persist (high sex ratios, high population mobility, disadvantaged position of indigenous people and remote dwellers) even though mining has become an insignificant direct employer (less than one percent of the workforce) and the services sector drives the labour market. This persistence can be linked to the Territory and federal government expectations of economic development patterns in the region and the frontier mythology created around the Northern Territory. Addressing the demographic imbalance is a critical step towards realizing ambitions for economic diversification.     

Local diversity in settlement,demography and subsistence across the southern Indian Neolithic-Iron Age transition: site growth and abandonment at Sanganakallu-Kupgal

The Southern Indian Neolithic-Iron Age transition demonstrates considerable regional variability in settlement location, density, and size. While researchers have shown that the region around the Tungabhadra and Krishna River basins displays significant subsistence and demographic continuity, and intensification, from the Neolithic into the Iron Age ca. 1200 cal. BC, archaeological and chronometric records in the Sanganakallu region point to hilltop village expansion during the Late Neolithic and ‘Megalithic’ transition period (ca. 1400–1200 cal. BC) prior to apparent abandonment ca. 1200 cal. BC, with little evidence for the introduction of iron technology into the region. We suggest that the difference in these settlement histories is a result of differential access to stable water resources during a period of weakening and fluctuating monsoon across a generally arid landscape. Here, we describe well-dated, integrated chronological, archaeobotanical, archaeozoological and archaeological survey datasets from the Sanganakallu-Kupgal site complex that together demonstrate an intensification of settlement, subsistence and craft production on local hilltops prior to almost complete abandonment ca. 1200 cal. BC. Although the southern Deccan region as a whole may have witnessed demographic increase, as well as subsistence and cultural continuity, at this time, this broader pattern of continuity and resilience is punctuated by local examples of abandonment and mobility driven by an increasing practical and political concern with water.     

Plant exploitation of the last foragers at Shizitan in the Middle Yellow River Valley China: evidence from grinding stones

China is one of the few centers in the world where plant domestication evolved independently, but its developmental trajectory is poorly understood. This is because there is considerably less data from the terminal Pleistocene and early Holocene documented in China than in other regions, such as the Near East and Mesoamerica, and previous studies on Paleolithic subsistence in China have largely focused on animal hunting rather than plant gathering. To resolve these problems the current research investigated the range of plants used by late Paleolithic hunter–gatherers in the middle Yellow River region where some of the earliest farmers emerged. We employed usewear and starch analyses on grinding stones to recover evidence for plant use in a hunting–gathering population at a late Paleolithic site, Shizitan Locality 9 in Jixian, Shanxi (ca. 13,800–8500 cal. BP). The usewear analysis shows that all artifacts preserved a range of usewear patterns best matching multiple tasks and indicating multi-functional use. Starch remains recovered from these tools indicate that the Shizitan people collected and processed many types of grass seeds (Panicoideae and Pooideae subfamilies), acorns (Quercus sp.), beans (Phaseoleae tribe) and yams (Dioscorea sp.). The Shizitan people represented some of the last hunter–gatherers in the middle Yellow River region. Their broad spectrum subsistence strategy was apparently carried on by the first Neolithic farmers in the same region, who collected similar wild plants and eventually domesticated millets. The trajectory from intensified collection of a wide range of wild plants to domestication of a small number of species was a very long process in north China. This parallels the transition from the “broad spectrum revolution” to agriculture in the Near East.     

Investigating shellfish deposition and landscape history at the Natia Beach site,Fiji

The relationship between environmental variation and subsistence practices is a central point of discussion in much Oceanic archaeology. While human predation can significantly reduce prey populations, environmental variation also contributes to reductions in prey abundance, possibly leading to increased human competition and resource scarcity. At the Natia Beach site, Nacula Island, Fiji, geoarchaeological evidence suggests that coastal progradation began soon after initial occupation of the coastal plain. Additionally, at approximately 650 BP a marked increase in clay and silt deposition occurred. Changes in coastal geomorphology may be explained by landscape response to regional Mid-Holocene sea level fall combined with human induced soil erosion due to upland settlement. Smaller scale environmental changes associated with climate variability may have also played a role. Additionally, landscape change appears to have had a measurable impact on local nearshore mollusks that are sensitive to high levels of water turbidity. Minor evidence of human exploitation is observable in this shellfish assemblage, although changes in predation pressure may have allowed shellfish populations to recover. Increased ceramic diversity and fortified settlements also appear at approximately 650 BP on Nacula and other parts of Fiji. The suite of changes at Natia may be explained by processes of regional and local environmental changes, and human adaptation in terms of subsistence, spatial organization, and competition.     

Assessing the impact of mid-to-late Holocene ENSO-driven climate change on toxic Macrozamia seed use: a 5000 year record from eastern Australia

Palaeoenvironmental and palaeoclimatic data indicate that during the mid-to-late Holocene eastern Australia became significantly drier and experienced more intense and more frequent droughts. These changes, driven by the re-emergence and intensification of the ENSO climate phenomena, have been argued to have had considerable impact on Aboriginal societies, although there is uncertainty as to the exact nature, timing and magnitude of this impact. This paper analyses changes in the utilisation of toxic Macrozamia (cycad) seeds at seven archaeological sites in eastern Australia, identifying an extremely close correlation between the intensity of seed use and two proxy ENSO datasets, and a weaker correlation with a third ENSO dataset. Given the ecological attributes and resource potential of these plants, it is argued that these correlations are best explained as an intensified exploitation of a lower-ranked resource in direct response to the increased subsistence risks and lower productivity created by ENSO-driven climatic conditions. It also suggests that by 3000 BP the intensification of the ENSO system was driving changes in human subsistence behaviour on a sufficient scale to have considerable impact on other aspects of the wider cultural systems.     

Declines in Mammalian Foraging Efficiency during the Late Holocene, San Francisco Bay, California

Resource intensification models that have been posited for prehistoric California predict decreases in foraging efficiency during the late Holocene, Using implications of the fine-grained prey model of optimal foraging theory, I derive an index of the efficiency of vertebrate prey choice from the relative abundances of large- and small-sized prey items. I then test the intensification models with late Holocene mammalian faunas from San Francisco Bay shellmounds. Dramatic linear decreases in the relalive frequency of artiodactyls compared to the smaller sea otters (Enhydra lutris) throughout the occupational histories of particular localities strongly support the resource intensification models. The declines in artiodactyl abundances are not correlated with late Holocene climatic indices developed for this region, with changes in the seasonal use of shellmounds, or with technological innovations. An intra- and interregionally consistent pattern in declining abundances of large mammals in environmentally distinct regions throughout California suggests that resource depression driven by human predators may be the single most important cause of the declines. These patterns have far-reaching implications concerning the long-term human role in structuring prehistoric ecosystems.     

Resource intensification in the Late Upper Paleolithic: a view from southern China

Resource intensification is often viewed as a precursor to sedentism and thereby to agriculture. Late Upper Paleolithic sites in China are also seen as important precursors to the beginnings of sedentism and agriculture, but few faunal assemblages have been studied in detail and therefore little is known of pre-Neolithic economies in the region. A large faunal sample from a key site for early pottery and possible rice collection sheds light on subsistence strategies at the end of the Paleolithic. We apply an array of taphonomic analyses to the mammal remains to investigate the extent to which carcasses were processed for within-bone nutrients, which we see as a possible indicator of resource intensification. Determining if this is a regional trend, and/or represents diachronic change in subsistence strategies, will depend on the availability of comparative data in the future.     

Networks and Neolithisation: sourcing obsidian from Körtik Tepe (SE Anatolia)

This paper details the use of obsidian sourcing to reconstruct networks of interaction (or ‘communities of practice’) amongst populations of south-eastern Anatolia and the Near East in the context of ‘Neolithisation’ during the late 11th–early 10th millennia BC. EDXRF was used to elementally characterise 120 artefacts of Epi-Palaeolithic – Pre-Pottery Neolithic A date from Körtik Tepe in south-eastern Anatolia. Four eastern Anatolian sources are represented, mainly Bingöl A/B and Nemrut Da?, plus the first evidence for the use of Mu? obsidian. When the source data is integrated with the artefacts' techno-typological attributes it is possible to locate the assemblage within an Upper Tigris tradition (with some interesting local differences), which stands in stark contrast to contemporary practices in northern Mesopotamia and the Levant. These local and regional distinctions support recent views of the Neolithic being much more heterogeneous, with a ‘mosaic’ of community-specific/local traditions of subsistence practices, raw material choices and lithic technologies during the Younger Dryas–Early Holocene.     

The Neolithic Macro-(R)evolution: Macroevolutionary Theory and the Study of Culture Change

The macroevolutionary approach in archaeology represents the most recent example in a long tradition of applying principles of biological evolution to the study of culture change. Archaeologists working within this paradigm see macroevolutionary theory as an effective response to the shortcomings of neo-Darwinian biological evolution for studying cultural evolution. Rather than operating at the level of individual traits, macroevolutionary archaeologists emphasize the role of hierarchical processes in culture change. While neo-Darwinian archaeologists disavow any element of human intent in culture change, to macroevolutionary archaeologists human agency is a key component of cultural evolution that allows cultures to respond to pressures more quickly and with greater degree of flexibility and directedness than found in biological evolution. Major culture change, when it happens, is likely to be rapid, even revolutionary, with periods of rapid change separated by periods of relative stasis of actively maintained stability. The emergence of Neolithic cultures has long been recognized as one of two periods of major revolutionary culture change in human prehistory. Here I examine the record for the Near East, tracing the empirical record for the origin of agriculture in this region, as well as other demographic, social, and ideological components of Neolithic emergence. While the empirical record from the Near East subscribes in a general way to basic principles of macroevolutionary theory, cultural evolution cannot be understood through appeal to principles of biological evolution alone, whether based in macroevolutionary theory or neo-Darwinianism. Instead, the key role of human agency in culture change distinguishes cultural evolution from biological evolution and requires a more pluralistic and less doctrinaire appeal to multiple models of change based in both the biological and social sciences.     

Large shell middens in Lamberts Bay,South Africa: a case of hunter–gatherer resource intensification

Enormous shell middens (“megamiddens”) dating to c. 3000–2000 BP along the West Coast of South Africa were explained initially within a framework based on the Kalahari San ethnography. The overwhelming dominance of marine shell and low densities of artefacts and vertebrate remains were seen as merely the reflection of processing localities. A far more complex picture has emerged recently, with a trend of raising population densities and longer residential permanence between 3500 and 2500 BP. Successive reformulations of the foraging ecology of both marine and terrestrial prey are apparent, with isotopic values from human skeletons and quantified dietary remains showing increased marine food consumption during the megamidden period when compared to other stages. Shellfish collection shifted from a mix of limpets, whelks and black mussels before 3000 BP to the intensified collection of the later from about 2600 BP, with local impact on marine fauna becoming evident at this time. Coastal groups became also increasingly less reliant on large mobile game and more so on small territorial bovids and tortoises as from 3500 BP, with strongest emphasis on this foraging behaviour after 2700 BP. Read against palaeoenvironmental data, this reconstruction is consistent with hunter–gatherer resource intensification models world-wide.     

The Pastoral Neolithic of East Africa

In East Africa, as in many other regions, the initial shift from hunting and gathering to food production was a secondary process involving the introduction of species domesticated elsewhere. Specifically, the East African Neolithic, or Pastoral Neolithic, centered on herding livestock, some of which may have been domesticated in the Sahara and all of which were almost certainly imported from areas to the north. The development of the Pastoral Neolithic was lengthy and complex, having begun before 4000 B.P. and lasted until about 1300 B.P. Although detailed information on this segment of African prehistory is not abundant, data so far available reveal a succession of cultural transformations within the Pastoral Neolithic, such that it can be divided into early, evolved, and late stages, each exhibiting distinctive combinations of ceramic wares, lithic industries, and subsistence regimes. The transformations seem to have been fostered by both environmental change and population movements.     

Variability in Eritrea and the Archaeology of the Northern Horn During the First Millennium BC: Subsistence,Ritual, and Gold Production

Around the margins of Asmara, Eritrea, hundreds of sites dating to the early and mid-first millennium BC have been documented. They range from single family dwellings to small and large hamlets, small and large villages, and small towns. We call these Ancient Ona sites, using the Tigrinya term for ruin. Our findings testify to significant subsistence, ritual, and economic variation within a region of 12 by 17 km: (1) different subsistence strategies in the well-watered, open basin to the west of Asmara (emmer wheat, barley; cattle) compared to the uplands north and east of Asmara (lentil, teff; goats/sheep); (2) ritual events, marked by stone bulls' heads and a huge ash deposit at Sembel Kushet, that brought people together in rites of passage and intensification during Meskel-like ceremonies, including ritual exchange; and (3) the exploitation of gold north of Asmara among heterarchically organized communities that exchanged specialized products within this region.