Search

For several decades, conventional pollen analyses have been supplemented with information provided by Non-Pollen Palynomorphs (NPP). Generally, the taxa included in this group are microalgae, fungi, insects and arachnid's chitinous remains, as well as plant debris and other organic palynomorphs of undetermined origin, that are valuable tools with which to characterise the original strata as well as the local environmental features that influence deposit formation processes. In this work, we present the results of the NPP analysis of the archaeological and palaeontological deposits of Sima del Elefante, Gran Dolina and Galería, all of which are located in the Trinchera area (Sierra de Atapuerca, Burgos), spanning a period from 200 ka to almost 1.5 million years ago. The NPP analysis of the three deposits has provided information about the presence of decayed organic matter accumulations, erosion processes and moisture conditions. Knowledge of palynomorphs contributes to the understanding of the biological, physical and chemical dynamics that resulted in different sedimentary sequences. In almost all cases, there is a clear connection between the major stratigraphic trends established for the three deposits and the NPP assemblages identified. However, the eminently local character of the dispersion of most of the palynomorphs identified has prevented the interrelation between the three sequences analysed. [ABSTRACT FROM AUTHOR]

Abstract: The present paper analyses the evidence provided by three sites (Sima del Elefante, Gran Dolina, and Galería) located in the Trinchera del Ferrocarril of the Sierra de Atapuerca. These three sites are cave infillings that contain sediments deposited from approximately 1.2 Ma to 200 kyr. Pollen, herpetofauna, and small and large mammal remains are used as proxies to obtain a general picture of the environmental changes that occurred at the Sierra de Atapuerca throughout the one million-year period represented at these sites. Similarly, cultural changes are tracked analyzing the evidence of human behavior obtained from the study of several bone and lithic assemblages from these three sites. At least three periods with different cultural features, involving technology, subsistence and behavior, are determined from the available evidence. The first two periods correspond to the Mode 1 technology and Homo antecessor: the first is dated around 1.2 to 1.0 Ma and reflects opportunistic behavior both in technology and subsistence. The second period is around 800 kyr BP. Mode 1 technology is still maintained, but subsistence strategies include systematic hunting and the use of base camps. The third period is dated between 500ka and 200ka and corresponds to the Mode 2 technology and the acquisition of directional hunting and other organizational strategies by Homo heidelbergensis. A transition from Mode 2 to Mode 3 seems to appear at the end of this time-range, and may reflect the early phases of a fourth cultural change. With regard to the environment, our main conclusion is that there was an absence of extremely harsh conditions at Atapuerca throughout this time period. The presence of Mediterranean taxa was constant and the dominant landscape was a savannah-like open environment, probably with small forest patches. An alternation of Mediterranean and mesic species as the dominant component of the tree storey was induced by the climatic cycles, and steppes spread across the landscape during the drier periods. In any case, it is not possible to establish clear cut-off points separating entirely different environmental episodes. Our results show no evidence of any relationship between environmental change and cultural change at the Sierra de Atapuerca. [Copyright &y& Elsevier]

Abstract: El Mirador site has a sequence formed by burnt dung resulting from pastoral activities during the Bronze Age and the Neolithic period. Because there is a high sediment variation in the profile, facies descriptions were used to guide the archaeologists in their work. Paleobotanical and mineralogical analyses were used to describe and understand the formation of the facies from the MIR 4 level. Furthermore, the paleobotanical results serve to reconstruct the landscape in Atapuerca during the Bronze Age. Most seeds recovered are from Triticum aestivum/durum, but other cereals and also Leguminoseae and fruits have been identified. Charcoal analysis has yielded mainly deciduous and evergreen Quercus. Pollen analysis has revealed a low arboreal cover, with Pinus, Quercus and riverside trees. Most of the pollen record corresponds to herbs, such as Poaceae and Asteraceae. All these results indicate a mosaic of different biota with forest, pastureland and cultivated fields near the site. Most of the phytoliths come from the leaves and stems of festucoid grasses. However, there are some differences in the phytolith type and number, the amount of faecal spherulites, the mineralogical composition and the percentage of multicellular structures that indicate that not all the facies in the site have been formed in the same way. Thus, the work carried out has demonstrated that some facies are related more to agricultural activities than to pastoralism activities, and that other facies have been affected by incipient diagenetic processes. [Copyright &y& Elsevier]

Level TE9c of the Sima del Elefante site (Sierra de Atapuerca, Spain) is one of the oldest sites with evidence of human occupation in western Europe. We began excavating level TE9c in 2003, and the work there continues today. The studies of the archaeology, palaeontology and geology from this locality have provided an indispensable dataset with which to capture a picture in the scenario of the origin of humans in Europe. Based on these data, we raise and discuss several topics, such as the possible origin of the lineage of the first hominins that inhabited western Europe; their capacity to have active hunting or scavenging abilities; whether their subsistence strategies were successful; and what the environment and habitats where these hominin groups settled was like. The aim of this paper is to present the results and discussions obtained from the research team and to establish the primary features of early human occupations in southwestern Europe. Tentatively, we may conclude, based on the events recorded at TE9c, that the first humans were in the Iberian peninsula at around 1.2 Ma they used the caves of the Sierra de Atapuerca as shelters probably during their hunting activities; the cavities were surrounded by Mediterranean forest, rivers and water ponds, and varied habitats as suggested by the rich and diverse assemblage of fossils of vertebrates (fish, amphibians and reptiles, birds, large and small mammals); where humans possibly caught what they found in the surroundings. [ABSTRACT FROM AUTHOR]