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  • 1
    Keywords: Life sciences. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (392 pages)
    Edition: 1st ed.
    ISBN: 9783510655359
    DDC: 371
    Language: English
    Note: Cover -- Title -- Copyright -- Preface -- The Authors -- Table of Contents -- Chapter 1 African Research -- 1.1 Millennial spaces have always structured the African continent -- 1.1.1 Genetics, archaeology and geography -- 1.1.2 The genetic narrative -- 1.1.3 The role of archaeology -- 1.1.4 The build of the African continent -- 1.1.5 Longstanding contexts -- 1.1.6 The centre of Africa, void of Pleistocene humans -- 1.1.7 The volatile bow around the centre -- 1.1.8 The self-sufficient subcontinent to the south -- 1.1.9 The patchy east -- 1.1.10 Sahara Desert and Nile Valley -- 1.1.11 Remote margins: Atlas Mountains, Niger Inland Delta, Namib desert: oblivion and loss -- 1.2 Palaeoanthropological background -- 1.2.1 Early hominins -- 1.2.2 Origin of Homo and first expansions out of Africa -- 1.2.3 Archaic Homo sapiens in Africa -- 1.2.4 Anatomically modern humans -- 1.2.5 Biocultural evolution of Homo sapiens -- 1.3 Ethiopian lakes as paleoenvironmental and palaeoclimate archives -- 1.3.1 Regional setting of the Chew Bahir basin -- 1.3.2 Materials and Methods used for the analysis of the Chew Bahir record -- 1.3.3 Palaeoecological results based on the Chew Bahir record -- 1.3.4 Conclusion from a palaeoecological point of view -- 1.4 The role of tropical highlands in the dispersal of Homo sapiens -- 1.4.1 Introduction -- 1.4.2 Environmental background -- 1.4.3 The Middle Stone Age archaeological record -- 1.4.4 The earliest evidence of high-altitude occupation -- 1.4.5 The influence of climate in the dispersal of Homo sapiens from Africa -- 1.4.6 Conclusion -- 1.5 Ephemeral but not remote - Insights into the Late Pleistocene of North-East Africa -- 1.5.1 Introduction -- 1.5.2 Regional context -- 1.5.3 Environmental and climatological setting -- 1.5.4 Late Pleistocene record from Sodmein Cave. , 1.5.5 Open-air sites in Sodmein area and Wadi Qena area -- 1.5.6 Reconstructing the Late Pleistocene environment of the Eastern Desert -- 1.5.7 Re-occupation model of the Sahara after the hyper-arid Pleistocene -- 1.5.8 Conclusion -- 1.6 Hunter-gatherer mobility: Anthropological models of the first African frontier -- 1.6.1 Introduction -- 1.6.2 Frontiers of rationalism and colonial expansionism -- 1.6.3 The internal African frontier and the first African frontier -- 1.6.4 Fission and fusion pattern -- 1.6.5 The effects of nested developmental cycles -- 1.6.6 The Changing Composition Group Model -- 1.6.7 Modelling marriage rules -- 1.6.8 Conclusion -- 1.7 Summary -- 1.8 References -- Chapter 2 Middle East/Levant -- 2.1 The southern Levant as migration corridor and barrier -- 2.1.1 Physiographic and geologic settings -- 2.1.2 Climate -- 2.1.3 Present-day vegetation -- 2.1.4 Vegetation history: Dry or wet glacial in the Levant? -- 2.1.5 Lake-level history: increased glacial wetness or decreased evaporation? -- 2.2 The palaeoenvironment of the southern Levant during the last interglacial- glacial cycle -- 2.2.1 Vegetation history -- 2.2.2 Climate reconstruction -- 2.2.3 Biome modelling -- 2.2.4 Regional synthesis and implications for hominids -- 2.3 The Levantine Upper Palaeolithic seen from the Wadi Sabra archaeological and environmental record -- 2.3.1 Human migration crossed the latitudes -- 2.3.2 Various biomes share the Middle East -- 2.3.3 Environment, culture and human migration related -- 2.3.4 Middle Palaeolithic -- 2.3.5 Upper Palaeolithic -- 2.3.6 Early phase: only Lower Wadi Sabra occupied by humans -- 2.3.7 Evolved phase: occasional human visits to the Upper Wadi Sabra -- 2.3.8 Late phase: a human refuge in arid times? -- 2.3.9 The onset of the Epipalaeolithic: Wadi Sabra as marginal habitat. , 2.3.10 Geomorphological and sedimentological setting of the archaeological sites in the Wadi Sabra -- 2.3.11 Conclusion -- 2.4 Summary -- 2.5 References -- Chapter 3 South-Eastern Europe -- 3.1 South-Eastern Europe: The gateway for human migration towards Europe? -- 3.1.1 Physiographic and geological setting, climate and present-day vegetation -- 3.1.2 Outline and investigations presented in this chapter -- 3.2 Early Homo sapiens in South-East Europe: the evidence from Apidima Cave A -- 3.2.1 Homo sapiens: evolution and dispersal -- 3.2.2 The site of Apidima -- 3.3 Orbital and millennial climate oscillations and environment evolution in the Marmara-Balkan migration route since the Last Glacial -- 3.4 The speleothem record of the Mediterranean and Balkan region -- 3.4.1 The last glacial's speleothem record in the wider Mediterranean region -- 3.4.2 Rapid climate change at the transition from Neanderthals to modern humans -- 3.4.3 Towards process-understanding of environmental change during last glacial's D-O cycles -- 3.5 Palaeoclimatic evolution in Central and South-Eastern Europe during the last glacial based on aeolian sediments -- 3.5.1 The Banat - a geoarchaeological key area -- 3.5.2 The palaeoclimatic archive of the Middle Danube loess deposits -- 3.5.3 The palaeoclimatic archive of the Lower Danube loess deposits -- 3.5.4 Supraregional and global implications -- 3.6 Chronological constraints from tephra in South-Eastern European loess records -- 3.6.1 State-of-art of tephrochronological research in South-Eastern European loess -- 3.6.2 The Campanian Ignimbrite/Y-5 tephra (CI) -- 3.6.3 The so-called L2 tephra -- 3.6.4 The Bag tephra -- 3.6.5 Other prominent tephra layers -- 3.6.6 The Carpathian tephras -- 3.6.7 Outlook -- 3.7 The Upper Paleolithic in the Carpathian Basin: The European heart of Our Way to Europe. , 3.7.1 The early Upper Palaeolithic of the Carpathian Basin: Patterns of disorder -- 3.7.2 Ideas in motion: The technological approach and the contribution to human dispersal -- 3.7.3 Discussion: No clear direction -- 3.7.4 Conclusions: A weak vanguard -- 3.8 Summary -- 3.9 References -- Chapter 4 Population dynamics, mobility and human-environment interaction from the Palaeolithic to the Neolithic - a view from Central Europe to the world -- 4.1 Representations of demographic dynamics -- 4.1.1 Three types of representation -- 4.1.2 Relationship between the dominant and the segmentary representation -- 4.1.3 Comparison of interpretations -- 4.1.4 Stages and oscillations -- 4.1.5 Biological patterns -- 4.1.6 Vertical social differentiation -- 4.1.7 The fallacy of the so-called Malthusian trap -- 4.1.8 The fallacy of exhausting the environmental carrying capacity -- 4.1.9 Conclusion -- 4.2 Population dynamics of the Palaeolithic -- 4.2.1 Demographic estimates -- 4.2.2 The Cologne Protocol - approaching prehistoric demography -- 4.2.3 Upscaling - mind the gap -- 4.2.4 Diachronic population dynamics during the Upper and Final Palaeolithic of Europe -- 4.2.5 A spatially explicit, regional perspective on population dynamics -- 4.2.6 Demographic developments at global scale -- 4.2.7 Conclusion -- 4.3 Human-environment interaction -- 4.3.1 Cultural connectivity -- 4.3.2 A multisphere perspective on population dynamics, human-environment interaction and mobility in prehistoric Central Europe -- 4.3.3 Lithosphere/reliefsphere and population dynamics -- 4.3.4 Pedosphere and population dynamics -- 4.3.5 Pedosphere and human occupation during the Upper Palaeolithic -- 4.3.6 Terrestrial Hydrosphere and population dynamics -- 4.3.7 Biosphere and population dynamics -- 4.3.8 Biosphere, atmosphere and population dynamics -- 4.3.9 Fire and population dynamics. , 4.3.10 Conclusion -- 4.4 Summary -- 4.5 References -- Chapter 5 The Westernmost Mediterranean -- 5.1 Introduction -- 5.2 Palaeoecology and human settlement pattern (50-5 ka) -- 5.2.1 Geoarchives and palaeoenvironment -- 5.2.2 Human settlement pattern -- 5.3 Key Sites in Andalusia and the Eastern Rif -- 5.3.1 Sites in Andalusia -- 5.3.3 Sites in the Eastern Rif -- 5.4 On the Relevance of Borders - The Strait of Gibraltar and the Ebro Frontier Model -- 5.4.1 The Strait of Gibraltar - Bridge or Barrier -- 5.4.2 The Ebro Frontier Model - 20 years after -- 5.5 Summary -- 5.6 References -- Chapter 6 Modelling Human Dispersal in Space and Time -- 6.1 Introduction -- 6.2 Model Framework -- 6.2.1 Human Existence Potential -- 6.2.2 Human Mobility Model -- 6.2.3 Constrained Random Walk Model -- 6.3 Archaeological data -- 6.4 Human existence potential and kinematic applications -- 6.4.1 Probability of human existence: Aurignacian -- 6.4.2 Probability of human existence: Last Glacial Maximum -- 6.5 Impact of regional climate on human dispersal -- 6.6 Dynamic simulation of our way to Europe -- 6.7 Impact of the Heinrich Event 4 on human population in the Iberian Peninsula -- 6.8 Summary -- 6.9 References -- Chapter 7 Methods -- 7.1 Scientific Drilling -- 7.2 Palaeomagnetism and environmental magnetism -- 7.3 Varve chronology -- 7.4 Radiocarbon dating -- 7.5 Pollen dating and flow cytometry -- 7.6 Luminescence dating -- 7.7 U-Th dating of carbonates -- 7.8 Stable isotopes in speleothems as palaeoclimatic indicators -- 7.9 Pollen analysis -- 7.10 Black carbon analyses -- 7.11 Laboratory analysis of Loess palaeosol sequences -- 7.12 Palaeoclimate reconstructions based on botanical-climatological transfer functions -- Chapter 8 Epilogue: School needs science! - Approaches to Model and Promote Comparative Competences in Geography Education -- 8.1 Introduction. , 8.2 Theoretical approaches to comparison.
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  • 2
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online Ressource (15 S., 100 KB)
    Language: German
    Note: Förderkennzeichen BMBF 01UA0804C. - Verbund-Nr. 01063951 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden. - Auch als gedr. Ausg. vorh , Systemvoraussetzungen: Acrobat reader.
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  • 3
    Keywords: Forschungsbericht ; Patagonien Süd ; Seesediment ; Kratersee
    Type of Medium: Online Resource
    Pages: Online-Ressource (55 S., 3,15 MB) , graph. Darst.
    Language: German , English
    Note: Förderkennzeichen BMBF 01LD0034 - 01LD0035 - 01LD0301. - [Engl. Titel: South Argentinean Lake Sediment Archives and Modelling] , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Auch als gedr. Ausg. vorhanden , Systemvoraussetzungen: Acrobat reader. , Text teilw. in dt., teilw. in engl.
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  • 4
    Publication Date: 2021-12-15
    Description: Highlights: • Multiproxy record from S Ethiopia extends knowledge about environment and climate of past 116,000 yrs during human expansion. • Hydroclimate during Marine Isotope Stage (MIS) 5 was much more variable (frequency and amplitude) than during MIS 3 and 4. • Earth system models and model simulations of intermediate complexity emulate corresponding amplitude shifts in hydroclimate. • Environment was arid during MIS 3 and 4, but permanent lake water bodies existed as inferred from our biological proxies. Abstract: Archaeological findings, numerical human dispersal models and genome analyses suggest several time windows in the past 200 kyr (thousands of years ago) when anatomically modern humans (AMH) dispersed out of Africa into the Levant and/or Arabia. From close to the key hominin site of Omo-Kibish, we provide near continuous proxy evidence for environmental changes in lake sediment cores from the Chew Bahir basin, south Ethiopia. The data show highly variable hydroclimate conditions from 116 to 66 kyr BP with rapid shifts from very wet to extreme aridity. The wet phases coincide with the timing of the North African Humid Periods during MIS5, as defined by Nile discharge records from the eastern Mediterranean. The subsequent record at Chew Bahir suggests stable regional hydrological setting between 58 and 32 kyr (MIS4 and 3), which facilitated the development of more habitable ecosystems, albeit in generally dry climatic conditions. This shift, from more to less variable hydroclimate, may help account for the timing of later dispersal events of AMH out of Africa.
    Type: Article , PeerReviewed
    Format: text
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  • 5
    Publication Date: 2024-02-07
    Description: Despite eastern Africa being a key location in the emergence of Homo sapiens and their subsequent dispersal out of Africa, there is a paucity of long, well-dated climate records in the region to contextualize this history. To address this issue, we dated a ∼293 m long composite sediment core from Chew Bahir, south Ethiopia, using three independent chronometers (radiocarbon, 40Ar/39Ar, and optically stimulated luminescence) combined with geochemical correlation to a known-age tephra. The site is located in a climatically sensitive region, and is close to Omo Kibish, the earliest documented Homo sapiens fossil site in eastern Africa, and to the proposed dispersal routes for H. sapiens out of Africa. The 30 ages generated by the various techniques are internally consistent, stratigraphically coherent, and span the full range of the core depth. A Bayesian age-depth model developed using these ages results in a chronology that forms one of the longest independently dated, high-resolution lacustrine sediment records from eastern Africa. The chronology illustrates that any record of environmental change preserved in the composite sediment core from Chew Bahir would span the entire timescale of modern human evolution and dispersal, encompassing the time period of the transition from Acheulean to Middle Stone Age (MSA), and subsequently to Later Stone Age (LSA) technology, making the core well-placed to address questions regarding environmental change and hominin evolutionary adaptation. The benefits to such studies of direct dating and the use of multiple independent chronometers are discussed. Highlights • Four independent dating methods applied to ∼293 m lake core from southern Ethiopia. • Reveals 620 ka high-resolution sedimentary record near key fossil hominin sites. • Mean accumulation rate of 0.47 mm/a comparable to other African lacustrine sediments. • Accumulation rate fell to 0.1 mm/a during MIS 2, likely due to reduced sediment supply. • Use of multiple independent chronometers is a powerful approach in lake settings.
    Type: Article , PeerReviewed
    Format: text
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  • 6
    Publication Date: 2021-03-29
    Description: A high-resolution multiproxy geochemical approach was applied to the sediments of Laguna Potrok Aike in an attempt to reconstruct moist and dry periods during the past 16 000 years in southeastern Patagonia. The age–depth model is inferred from AMS 14C dates and tephrochronology, and suggests moist conditions during the Lateglacial and early Holocene (16 000–8700 cal. BP) interrupted by drier conditions before the beginning of the Holocene (13 200–11 400 cal. BP). Data also imply that this period was a major warm phase in southeastern Patagonia and was approximately contemporaneous with the Younger Dryas chronozone in the Northern Hemisphere (12 700–11 500 cal. BP). After 8650 cal. BP a major drought may have caused the lowest lake level of the record. Since 7300 cal. BP, the lake level rose and was variable until the ‘Little Ice Age’, which was the dominant humid period after 8650 cal. BP.
    Keywords: Holocene ; Younger Dryas ; Lateglacial ; `Little Ice Age' ; lacustrine sediments ; geochemistry ; tephrochronology ; multiproxy approach ; Patagonia ; Argentina. ; 551
    Language: English
    Type: article , publishedVersion
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  • 7
    Publication Date: 2021-07-21
    Description: The Upper Pleistocene geoarchives in the south‐eastern Carpathian Basin are represented predominantly by loess–palaeosol records. In 2015, a 10 m sediment core composed of clay‐rich lacustrine sediments was recovered by vibracoring a dry lake basin located between the Vršac Mountains (Serbia) and the Banat Sands in the south‐eastern Carpathian Basin; a location relevant for placing regional archaeological results in a palaeoenvironmental context. Here, we present results from geoelectrical prospection and a lithostratigraphic interpretation of this sequence supported by a detailed granulometric study supplemented by ostracod analysis. An age model based on luminescence dating is discussed against sedimentological proxy data and its implication for palaeoenvironmental change. The cores show a stratigraphy of lighter ochre‐coloured and darker greyish sediment, related to the deposition of clay and silt trapped in an aquatic environment. Geophysical measurements show ~20 m thick lacustrine sediments. The grain‐size distributions including the variability in fine clay are indicative of a lacustrine environment. Fine particles were brought into the depositional environments by aquatic input and settled from suspension; also, direct dust input is constrained by grain‐size results. Riverine input and aeolian dust input interplayed at the locality.
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Description: Program IDEI_Proiecte de Cercetare Exploratorie
    Description: Serbian Ministry of Education, Science and Technological Development
    Keywords: 551 ; 554 ; Carpathian Basin ; Late Quaternary ; lacustrine sediment ; geoelectric analyses ; luminescence dating ; grain‐size analysis ; environmental dynamics
    Type: article
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  • 8
    Publication Date: 2016-11-19
    Description: Laguna Potrok Aike is an exceptional site in the southern hemisphere’s mid-latitudes because it records changes in the hydrological regime through lake-level variations in a continuous, high-resolution sedi- ment record back into the late Pleistocene. In this study, driving forces of lake-level changes at Laguna Potrok Aike are evaluated by means of process studies using data from an extensive multi-year moni- toring in and around the lake. Lake-volume changes were calculated with an energy-budget/bulk- transfer approach and translated into lake-level variations, which were then compared to pressure sensor data. Calculated lake levels are in broad agreement with measured data. We hypothesize that on short time scales, lake-level fluctuations are mainly driven by the precipitation-to-evaporation ratio. Apart from changing catchment conditions, relative humidity, precipitation, temperature, wind strength and wind direction have the most important influence on the hydrological balance of the lake. Lake level decreases during periods of persistently high wind speeds from westerly directions, whereas, during periods with more frequent occurrences of easterly winds, it increases. These situations are linked to a strengthening of the Southern Hemispheric Westerlies in the first and more frequent blocking situa- tions in the latter case. Although lake-level changes at Laguna Potrok Aike show some degree of simi- larity to variations of the El Niño Southern Oscillation (ENSO) and the Southern Hemisphere Annular Mode (SAM), a persistent correspondence remains to be documented. Water chemistry and sediment-trap data suggest that lake-internal carbonate precipitation is highly sensitive to short-term changes in the lake water volume and, thus, to lake-level variations. However, it becomes obvious that the sedimentary carbonate record, representing changes on longer time scales, is not linearly linked to lake-level changes, hence complicating quantitative lake-level reconstructions back in time. We suggest that short-term changes in authigenic carbonate production are mainly driven by changing precipitation/evaporation ratios probably superimposed on longer-term changes in ground- water input that represent a buffered climate signal. Scenario calculations for a period of 60 years show that changes of the controlling meteorological parameters in the range of 15-17% can lead to lake-level changes with a magnitude comparable to the reconstructed Holocene and Lateglacial extreme situations. In addition, modifications in the water- retaining capacity of the lake can also produce large lake-level changes. It is hypothesized that the development or disappearance of permafrost in the catchment of Laguna Potrok Aike during the Last Glacial/Interglacial transition may have changed the water-retaining capacity tremendously. The lake- level reconstructions for Laguna Potrok Aike might express some of the meridional climate variability observed in coupled general circulation model (CGCM) simulations for southern South America for the Last Glacial Maximum (LGM) and the mid Holocene.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 9
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    PERGAMON-ELSEVIER SCIENCE LTD
    In:  EPIC3Quaternary Science Reviews, PERGAMON-ELSEVIER SCIENCE LTD, 268, pp. 107095, ISSN: 0277-3791
    Publication Date: 2022-02-21
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 10
    Publication Date: 2023-02-07
    Keywords: Calendar age; COMPCORE; Composite Core; Core; DEPTH, sediment/rock; Dust, flux; MOHOS; Mohos, Romania; see reference(s)
    Type: Dataset
    Format: text/tab-separated-values, 312 data points
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