globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.05.010
论文题名:
Paleovegetation changes accompanying the evolution of a riverine system at the BK paleoanthropological site (Upper Bed II, Olduvai Gorge, Tanzania)
作者: Arráiz H.; Barboni D.; Uribelarrea D.; Mabulla A.; Baquedano E.; Domínguez-Rodrigo M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
语种: 英语
英文关键词: Early Pleistocene ; East Africa ; Hominins ; Paleoenvironment ; Phytoliths
英文摘要: Paleovegetation studies are essential to ecologically frame hominin evolution. The analysis of the phytolith content of 22 paleosol samples collected along the vertical sequence of the channel containing the BK (Bell's Korongo) archaeological levels, provided evidence of the paleovegetation that accompanied the evolution of the riverine system that formed this site 1.353. million. years ago, when climate was particularly arid. The analysis reveals the abundance of forest indicator phytoliths (46% to 92% of the assemblages), rare grass silica short cells and sedges phytoliths (up to 15% of assemblages), and palms (up to 10% of the phytolith assemblages). The vegetation of the BK fluvial system was therefore characterized by abundant woody plants. It did not vary significantly diachronically in the period of time under scrutiny. The alluvial paleovegetation corresponds well to the fluvial dynamic that formed BK, including the presence of sterile samples recovered in areas where the water traction changed the soils frequently. This spot of dense paleovegetation together with the fluvial watercourse (in a paleolandscape likely dominated by sparse/open vegetation) could have been attractive, seasonally, for animals and hominins. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68214
Appears in Collections:过去全球变化的重建

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作者单位: Department of Prehistory, Complutense University of Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; CEREGE, Aix-Marseille Université, CNRS, IRD, Collège de France, BP80, 13545 Aix-en-Provence Cedex 4, France; Department of Geodynamics, Complutense University, c/José Antonio Novais 12, 28040 Madrid, Spain; IDEA (Instituto de Evolución en África), Covarrubias 36, 28010 Madrid, Spain; Department of History and Archaeology, University of Dar es Salaam, Dar es Salaam, P.O. Box 35050, Tanzania; Museo Arqueológico Regional de Madrid, Plaza de las Bernardas, Alcalá de Henares, Madrid, Spain

Recommended Citation:
Arráiz H.,Barboni D.,Uribelarrea D.,et al. Paleovegetation changes accompanying the evolution of a riverine system at the BK paleoanthropological site (Upper Bed II, Olduvai Gorge, Tanzania)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01
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