Late Preceramic Peru

This paper presents a synthesis of current knowledge of Late Preceramic Peru (ca. 4450–3800 B.P.), a field of study that is less than 50 years old. A brief history of investigations and discussion of chronological systems are presented. A review of Late Preceramic achievements concentrating on subsistence economies and technology is followed by discussion of the social world of Late Preceramic Peru and current consensus and disputes regarding culture processes. Extensive long-distance exchange, farming, and social complexity are first clearly seen in the archaeological record during this time period. Nevertheless, the significance of this evidence with regard to the nature and intensity of the culture practices and processes that they represent is currently under investigation and in contention.     

The Ethnoarchaeology of Juvenile Foragers: Shellfishing Strategies among Meriam Children

Recognizing children's contribution to the archaeological record may be crucial for our ideas about the role of children in human evolution. Despite this, analyses of children's activities and how they might shape archaeological patterns are almost entirely absent from discussions about site formation processes. This may in turn result from the assumption that children are either inconsequential in their foraging activities or that identifying children's activities archaeologically will be difficult if not impossible. This challenge drew our attention toward children's intertidal gathering among the Meriam of the Eastern Torres Strait as a possible agent of patterned and predictable variability in shell middens. We present an analysis of differences between the prey choice and field processing strategies of children and adults and explore an hypothesis for predicting their archaeological effects on faunal assemblage variability.     

中国磨制石器起源的南北差异

磨制石器的起源是学界关心的问题之一,本文试图探讨中国早期磨制石器的主要种类、发展阶段及南北差异的原因,以期揭示磨制石器起源的内在机制。磨制石器的起源与生业经济紧密相关,中国旧石器向新石器过渡阶段对于植物资源的利用促使了中国磨制石器的起源。由于中国南北环境的差异,对于植物资源的利用种类和利用方式有所区别,因此导致中国南北磨制石器种类的不同。     

A Micro Model of Problem Definition and Policy Choice: Issue Image,Issue Association,and Policy Support of Power Plants

Past research on problem definition and public policy primarily focuses on the macro-system level. In this study, we propose a micro model of problem definition and policy choice at the individual level. We argue that while individual citizens' problem definitions and policy preferences are rooted in and filtered through their predisposition characteristics (such as socioeconomic status, political orientation, and informational base), their policy choices also strongly depend on how they define public issues, particularly how they perceive the image of an issue at hand and how they associate the issue with other public issues. Our empirical analyses, based on data from a national public survey on energy and power plant issues, support the key propositions derived from our theoretical model. Key contributions to and implications for policy studies are discussed in conclusion.     

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.     

The origins of agriculture in North-West Africa: macro-botanical remains from Epipalaeolithic and Early Neolithic levels of Ifri Oudadane (Morocco)

This research aims to shed light on the early stages of agricultural development in Northern Africa through the analysis of the rich macro-botanical assemblages obtained from Ifri Oudadane, an Epipalaeolithic–Early Neolithic site from North-East Morocco. Results indicate the presence of domesticated plants, cereals (Hordeum vulgare, Triticum monococcum/dicoccum, Triticum durum and Triticum aestivum/durum) and pulses (Lens culinaris and Pisum sativum) in the Early Neolithic. One lentil has been dated to 7611 ± 37 cal BP representing the oldest direct date of a domesticated plant seed in Morocco and, by extension, in North Africa. Similarities in both radiocarbon dates and crop assemblages from Early Neolithic sites in Northern Morocco and the Iberian Peninsula suggest a simultaneous East to West maritime spread of agriculture along the shores of the Western Mediterranean. Wild plants were abundantly collected in both the Epipalaeolithic and the Early Neolithic periods pointing to the important role of these resources during the two periods. In addition to fruits and seeds that could have been consumed by both humans and domesticated animals, fragments of esparto grass (Stipa tenacissima) rhizomes have been identified. This is a western Mediterranean native plant that may have been used as a source of fibres for basketry.     

Insect and clitellate annelid traces in mesofossil assemblages from the Cretaceous of Australasia

Mesofossil assemblages from several Cretaceous and Cenozoic units across Australia and New Zealand provide new evidence of insect and annelid behaviour. The earliest scale insects (Diaspididae, Coccoidea) from Australasia are described and represented by three scale morphotypes. The mesofossil assemblages also reveal clitellate annelid cocoon morphotypes, three morphotypes of arthropod coprolites and several insect piercement structures on gymnosperm leaf or stem fragments, possibly related to feeding or more likely oviposition. This research offers a new avenue for detecting cryptic terrestrial invertebrate groups and their interactions, particularly with plants, in the fossil record. The fossils demonstrate that insect/invertebrate activity can be preserved and identified in mesofossil suites, that such traces and exoskeleton fragments are relatively common in acid-extracted mesofossil suites, and that recognizable categories occur on multiple landmasses and at various ages.     

Next generation sequencing of DNA in 3300-year-old charred cereal grains

We investigated whether ‘next generation’ methods can be used to sequence ancient DNA molecules in charred cereal grains. We prepared a DNA extract from a mixed sample of barley, einkorn, emmer and broomcorn millet, taken from a 3300-year-old assemblage of charred cereal grains from Assiros Toumba, Greece. Using the SOLiD 5500 system, we obtained 21,112,844 unique sequence reads. Of these, 178,779 had a 75% or greater nucleotide sequence similarity with one or more entries in the full nucleotide sequence database; 496 of these matches were to previously reported sequences from barley, einkorn, emmer, broomcorn millet or related species such as hexaploid wheat. The unique reads were also compared with a database comprising only wheat sequences. This analysis identified 1658 charred grain sequences that had 90% or greater similarity with segments of the wheat genome. The presence of barley, wheat and millet sequences in the next generation dataset confirms the presence of ancient DNA in this charred grain assemblage. Enrichment of extracts by hybridization capture or equivalent methods is likely to enable sequences to be obtained for entire genes and other genomic regions of interest.     

Mesolithic plant exploitation at the Roc del Migdia, Catalonia

Charred plant remains from the mesolithic site of Roc del Migdia have been analysed in detail. Hazel shell and endocarp fragments of sloe (Prunus spinosa L.) have been identified by incident light microscopy and an attempt has been made at the identification of quantities of parenchymatous plant remains through the use of the scanning electron microscope. A number of different classes of tissue are described and the implications of the results discussed.