Stefano Biagetti

In the 12,000 years preceding the Industrial Revolution, human activities led to significant changes in land cover, plant and animal distributions, surface hydrology, and biochemical cycles. Earth system models suggest that this anthropogenic land cover change influenced regional and global climate. However, the representation of past land use in earth system models is currently oversimplified. As a result, there are large uncertainties in the current understanding of the past and current state of the earth system. In order to improve representation of the variety and scale of impacts that past land use had on the earth system, a global effort is underway to aggregate and synthesize archaeological and historical evidence of land use systems. Here we present a simple, hierarchical classification of land use systems designed to be used with archaeological and historical data at a global scale and a schema of codes that identify land use practices common to a range of systems, both implemented in a geospatial database. The classification scheme and database resulted from an extensive process of consultation with researchers worldwide. Our scheme is designed to deliver consistent, empirically robust data for the improvement of land use models, while simultaneously allowing for a comparative, detailed mapping of land use relevant to the needs of historical scholars. To illustrate the benefits of the classification scheme and methods for mapping historical land use, we apply it to Mesopotamia and Arabia at 6 kya (c. 4000 BCE). The scheme will be used to describe land use by the Past Global Changes (PAGES) LandCover6k working group, an international project comprised of archaeologists, historians, geographers, paleoecologists, and modelers. Beyond this, the scheme has a wide utility for creating a common language between research and policy communities, linking archaeologists with climate modelers, biodiversity conservation workers and initiatives.

The study of Land Use and Land Cover (LULC) in Holocene Africa has been geographically and temporally unbalanced, particularly with regard to the integration of archaeological data into the reconstruction of past land use. Past African dynamics have often worked on a very large scale, and changes in LULC are extremely significant to the study of the development of cultural trajectories on a truly continental perspective. In this session we will gather experts from different regions of Africa with the aim of discussing possible directions for research on LULC in Africa, with a special focus on the regions that have not yet been the subject of land use studies. This session will also explore the viability of integrating new methods, perspectives on the relevance and future application of these studies, and the many data challenges present in the archaeological record.

ABSTRACT A pilot archaeological survey has revealed evidence for forty monumental stone cairns preserved in good conditions in the Mudug region, Puntland, in the Horn of Africa. These monuments were digitally recorded and are presented here as part of a first assessment of the archaeological potential of the region. While such monuments are not uncommon in eastern Africa, this particular discovery starts to shed light on an area that has not previously been explored archaeologically. Our paper reveals the rich potential of the Mudug region and paves the way for further research and development action in a key geopolitical area.

Primary data in CSV files.The present documents are the primary data used on the paper in preparation "Farming the World's drylands: ethnographic-based models highlight the key role of traditional knowledge for sustainable food production": 1) SI Dataset S1(SI1-eHRAF-dataset.csv): Full cross-cultural dataset, according to the data provided by eHRAF and added external sources, on traditional cultivation practices of finger millet, pearl millet and sorghum worldwide. Data has been normalised according to the Standard Cross-Cultural Sample Codebook (3). 2) SI Dataset S2 (SI2-interviews.csv): Data resulting form the ethnographic interviews, processed and normalized according to the Standard Cross-Cultural Sample Codebook (3)

Numerous and extensive ‘Stone Walled Sites’ have been identified in southern African Iron Age landscapes. Appearing from around 1200 CE, and showing considerable variability in size and form, these settlements are named after the dry-stone wall structures that characterize them. Stone Walled Sites were occupied by various Bantu-speaking agropastoral communities. In this paper we test the use of pXRF (portable X-ray fluorescence analysis) to generate a ‘supplementary’ archaeological record where evident stratigraphy is lacking, survey conditions may be uneven, and excavations limited, due to the overall site size. We propose herein the application of portable X-ray fluorescence analysis (pXRF) coupled with multivariate exploratory analysis and geostatistical modelling at Seoke, a southern African SWS of historical age (18th century CE). The aim of the paper is twofold: to explore the potential of the application of a low cost, quick, and minimally invasive technique to detect chemica...

The reconstruction of land use practices in hyper-arid Saharan Africa is often hampered by the accuracy of the available tools and by unconscious biases that see these areas as marginal and inhospitable. Considered that this has been for a long time the living space of pastoral mobile communities, new research is showing that agriculture might have been more important in these areas than previously thought. In this paper, after a review of present-day land use strategies in Saharan Africa, we show how ethnographic and ethnoarchaeological data can offer us a different point of view and help in better defining land use and food production strategies in this area. Ultimately, these insights can be integrated into the ongoing efforts to reconstruct past land use globally.

Abstract In this paper we present the results of phytolith investigations at two archaeological sites in northwestern Morocco: Khil (Tangier) and Kaf Taht el-Ghar (Tetouan). The two sites located in Western Maghreb, one on the Atlantic and one on the Mediterranean coast, were investigated in the framework of the AGRIWESTMED project. Phytolith analysis complemented archaeobotanical, geoarchaeological and archaeological investigations to better identify plant use during the entire occupation sequence. At Khil 16 samples have been studied, coming from two profiles excavated in two different caves of the same system – grotte B and grotte C – that span a chronology comprised between the early Neolithic and the historic period. At Kaf Taht el-Ghar, 15 samples were analysed spanning from the Palaeolithic to the Historic period. Results show that at Khil plants are widely used from the very beginning of the Early Neolithic sequence. The surrounding vegetation was exploited and both C3 and C4 grasses were used, inside the cave. At the same time a wide array of other plants was utilised, such as palms and woody taxa. Phytolith analysis at the site of Kaf Taht el-Ghar indicates that crop processing was most probably not taking place on site. However, the predominance in the samples of C3 grasses morphologies agrees with the finding of previous macro botanical studies that identified cultivated wheat and barley in this cave deposits. A very interesting aspect of the phytolith assemblages of Kaf Taht el-Ghar is the widespread use of palm leaves and their gradual disappearance through time that coincides with an increase in the use of woody species.

In the 12,000 years preceding the Industrial Revolution, human activities led to significant changes in land cover, plant and animal distributions, surface hydrology, and biochemical cycles. Earth system models suggest that this anthropogenic land cover change influenced regional and global climate. However, the representation of past land use in earth system models is currently oversimplified. As a result, there are large uncertainties in the current understanding of the past and current state of the earth system. In order to improve representation of the variety and scale of impacts that past land use had on the earth system, a global effort is underway to aggregate and synthesize archaeological and historical evidence of land use systems. Here we present a simple, hierarchical classification of land use systems designed to be used with archaeological and historical data at a global scale and a schema of codes that identify land use practices common to a range of systems, both imp...

In recent years, ethnoarchaeological studies focusing on herbivore faecal remains within the soils, especially those from goat, sheep and cattle, have shown the importance of their study for identifying socio-economic activities. Thus, an accurate microstratigraphic examination of these deposits can provide us new insights into past land use, site formation processes, activity areas and intensity of use of space, mobility, domestic use of fuel, manuring, and foddering strategies. Mountain landscapes represent a relatively new terrain of investigation for geo-ethnoarchaeology. In this paper, we present a pilot project featuring an applied inter-disciplinary methodology that includes micromorphology, bulk stable isotope analysis (δ13C and δ15N), phytolith, pollen and non-pollen palynomorphs (NPPs) analyses. These were carried out on samples from three high-mountain (up to 1400 m a.s.l.) pastoral sites located at Monti Sibillini, in the Italian central Apennines. Results show that the ...

In the prehistoric green Sahara of Holocene North Africa-in contrast to the Neolithic of Europe and Eurasia-a reliance on cattle, sheep and goats emerged as a stable and widespread way of life, long before the first evidence for domesticated plants or settled village farming communities. The remarkable rock art found widely across the region depicts cattle herding among early Saharan pastoral groups, and includes rare scenes of milking; however, these images can rarely be reliably dated. Although the faunal evidence provides further confirmation of the importance of cattle and other domesticates, the scarcity of cattle bones makes it impossible to ascertain herd structures via kill-off patterns, thereby precluding interpretations of whether dairying was practiced. Because pottery production begins early in northern Africa the potential exists to investigate diet and subsistence practices using molecular and isotopic analyses of absorbed food residues. This approach has been successf...

This chapter aims to discuss the settlement distribution of current Kel Tadrart sites, focussing on their variability. In this, section I describe the current strategies of land use pursued by the few households living in the Tadrart Acacus, considering both anomalies and analogies in their settlement pattern.

Previous research has identified the antiquity and chronology of dairying practices as beginning in the Near East and its subsequent spread across Europe. In the Libyan Sahara, archaeological evidence, confirmed by the remarkable rock art depicting cattle herding, together with faunal evidence, also suggests an early inception of dairying practices in North Africa and the formation of an independent ‘secondary products’ economy by mobile pastoral groups. In this paper, we elaborate on the first unequivocal chemical evidence, based on the δ13C and Δ13C values of the major fatty acids of milk fat, for the adoption of dairying practices by prehistoric Saharan African people in the fifth millennium BC.

The Messak plateau contains remarkable evidence of human occupation during prehistoric and historic times, such as rock art engravings, megalithic monuments, and scatters of stone tools. Since 1980 these remains have been heavily affected by oil extraction-related operations, and it has only been over the last decade that these operations were adequately supported by archaeological mitigation strategies. The ‘Messak Project’ was originally conceived as a three-year programme (2010–2012) focusing on a range of co-ordinated actions to increase the knowledge of the area, to assess any damage and potential risks, and to preserve and manage the cultural heritage. Uprisings in Libya led to the sudden interruption of the project in late February 2011. Nevertheless, major results of the projects include: the compilation of a database of circa 10,000 sites, including hundreds of unpublished sites from previous surveys; the discovery of circa 2500 new archaeological sites; and the drawing of ...

The Messak Project started in summer 2010 as a joint project of the Libyan Department of Archaeology and the Italian-Libyan Archaeological Mission in the Acacus and Messak of Sapienza University of Rome, a three-year programme of heritage research and management of the Messak plateaux in south-western Libya. At the end of February 2011, in the final stages of the first season, the civil uprising interrupted the research and determined the termination of the project. After eight months of conflict, there is growing concern from ...

This volume is a collection of the contributions to the Ethnoarchaeology Conference Ethnoarchaeology: Current Research and Field Methods organized by the AIE-Onlus (Italian Society for Ethnoarchaeology) which was held in Rome in May 2010. Five different sessions were arranged: Ethnoarchaeology and Material Culture: Use, Function and Environmental Interaction; Ethnoarchaeology and Material Culture: Social Implications and Mental Patterns; Landscape Ethnoarchaeology: Interaction between Environment and Mechanisms of Choice; Ethnoarchaelogy and Pastoralism; Remote Sensing and Automatic Identification Techniques of the Archaeological Record; Ethnoarchaeology of Urban Environments. Different theoretical and methodological approaches were presented in the course of the Conference, testifying to the plurality of dimensions that traditionally characterize ethnoarchaeology. Click on the blue button above for a contents PDF."

In this paper, we present a pilot study aimed at investigating the impact of subsistence strategies and environmental pressure on the distribution of ethnographically documented strategies to cope with drought and its effects across 35 current societies in Africa. We use freely accessible ethnographic databases to retrieve data on how a number of African societies deal with the circumstances of drought, and ascertain the impact of geography on their distribution in order to measure possible relationships between them, a set of subsistence choices, and proxies of environmental constraints. We use Canonical Correspondence Analysis to explore the emerging patterns and find that subsistence strategy strongly impacts the choice of drought management strategies, especially if considered with a proxy of local environmental condition. Spatial proximity and aridity per se have only marginal impact, highlighting other relevant processes of cultural transmission that at least partly transcend ...

FAO guidelines on water requirements for plant growth in the absence of irrigation, stipulate that cultivation is not viable in areas with less than 450mm of annual rainfall. Indeed, in all maps of agricultural land use, most hyper-arid, arid, and semi-arid drylands are considered unproductive. Yet, modern societies in arid and semi-arid drylands still practice rainfed cultivation under regimes of much lower annual rainfall. This paper presents the results of ethnographic and cross-cultural investigations in the cultivation of Pearl millet, Finger millet and Sorghum, with a global perspective. We use published ethnographic material and novel data collected on the field to build and test models that display the interaction of ecological and geographic variables in explaining agricultural practices. The aim of this research is to show how rainfed agriculture is practised much more often, and in much more suitable areas, than normally reported. This holds the potential for the understa...

ABSTRACT This book focuses on the issues of resilience and variability of desert pastoralists, explicitly challenging a set of traditional topics of the discourse around pastoralism in arid lands of the Old World. Based on a field research carried out on the Kel Tadrart Tuareg in Libya, various facets of a surprisingly successful adaptation to an extremely arid environment are investigated. By means of an ethnoarchaeological approach, explored are the Kel Tadrart interactions with natural resources, the settlement patterns, the campsite structures, and the formation of the pastoral archaeological landscape, focusing on variability and its causes. The resilience of the Kel Tadrart is the key to understand the reasons of their choice to stay and live in the almost rainless Acacus Mountains, in spite of strong pressure to sedentarize in the neighboring oases. Through the collection of the interviews, participant observation, mapping of inhabited and abandoned campsites, remote sensing, and archival sources, various and different Kel Tadrart strategies, perceptions, and material cultures are examined. This book fills an important gap in the ethnoarchaeological research in central Sahara and in the study of desert pastoralism. Desert lands are likely to increase over the next decades but, our knowledge of human adaptations to these areas of the world is still patchy and generally biased by the idea that extremely arid lands are not suited for human occupation.

ABSTRACT Rock shelters in the central Saharan massifs preserve anthropogenic stratigraphic sequences that represent both a precious archive for the prehistory of the region and a powerful proxy data for Holocene palaeoenvironments. The geoarchaeological (micromorphology) and archaeobotanical (pollen analysis) approaches were integrated to investigate the anthropogenic sedimentary sequence preserved within the Takarkori rock shelter, a Holocene archaeological site located in the Libyan central Sahara (southern Tadrart Acacus massif). The site was occupied throughout the Early and Middle Holocene (African Humid Period) by groups of hunter–gatherers before and by pastoral communities later. The investigation on the inner part of the sequence allows to recognize the anthropogenic contribution to sedimentation process, and to reconstruct the major changes in the Holocene climate. At the bottom of the stratigraphic sequence, evidence for the earliest frequentation of the site by hunters and gatherers has been recognized; it is dated to c. 10,170 cal yr BP and is characterized by high availability of water, freshwater habitats and sparsely wooded savannah vegetation. A second Early Holocene occupation ended at c. 8180 cal yr BP; this phase is marked by increased aridity: sediments progressively richer in organics, testifying to a more intense occupation of the site, and pollen spectra indicating a decrease of grassland and the spreading of cattails, which followed a general lowering of lake level or widening of shallow-water marginal habitats near the site. After this period, a new occupational phase is dated between c. 8180 and 5610 cal yr BP; this period saw the beginning of the frequentation of pastoral groups and is marked by an important change in the forming processes of the sequence. Sediments and pollen spectra confirm a new increase in water availability, which led to a change in the landscape surrounding the Takarkori rock shelter with the spreading of water bodies. The upper part of the sequence, dating between c. 5700 and 4650 cal yr BP records a significant environmental instability towards dryer climatic conditions, consistent with the end of the African Humid Period. Though some freshwater habitats were still present, increasing aridity pushed the expansion of the dry savannah. The final transition to arid conditions is indicated by the preservation of ovicaprines dung layers at the top of the sequence together with sandstone blocks collapsed from the shelter's vault. On the contrary, the outer part of the sequence preserves a significantly different palaeoenvironmental signal; in fact, the surface was exposed to rainfall and a complex pedogenetic evolution of the sequence occurred, encompassing the formation of an argillic laminar horizon at the topsoil, the evolution of a desert pavement, and the deposition of Mn-rich rock varnish on stones. These processes are an effect of the general environmental instability that occurred in the central Sahara since the Middle Holocene transition. Finally, the local palaeoclimatic significance of the sequence fits well with Holocene regional and continental environmental changes recorded by many palaeohydrological records from North Africa. This highlights the potential of geoarchaeological and archaeobotanical investigations in interpreting the palaeoenvironmental significance of anthropogenic cave sediments in arid lands.

This book focuses on the issues of resilience and variability of desert pastoralists, explicitly challenging a set of traditional topics of the discourse around pastoralism in arid lands of the Old World. Based on a field research carried out on the Kel Tadrart Tuareg in Libya, various facets of a surprisingly successful adaptation to an extremely arid environment are investigated. By means of an ethnoarchaeological approach, explored are the Kel Tadrart interactions with natural resources, the settlement patterns, the campsite structures, and the formation of the pastoral archaeological landscape, focusing on variability and its causes. The resilience of the Kel Tadrart is the key to understand the reasons of their choice to stay and live in the almost rainless Acacus Mountains, in spite of strong pressure to sedentarize in the neighboring oases. Through the collection of the interviews, participant observation, mapping of inhabited and abandoned campsites, remote sensing, and archival sources, various and different Kel Tadrart strategies, perceptions, and material cultures are examined. This book fills an important gap in the ethnoarchaeological research in central Sahara and in the study of desert pastoralism.​ Desert lands are likely to increase over the next decades but, our knowledge of human adaptations to these areas of the world is still patchy and generally biased by the idea that extremely arid lands are not suited for human occupation.​

This volume focuses on the intangible elements of human cultures, whose relevance in the study of archaeology has often been claimed but rarely practiced. In this book, the authors successfully show how the adoption of ethnoarchaeological perspectives on non-material aspects of cultures can support the development of methodologies aimed at refining the archaeological interpretation of ancient items, technologies, rituals, settlements and even landscape.