Journal
PEERJ
Volume 7, Issue -, Pages -Publisher
PEERJ INC
DOI: 10.7717/peerj.8211
Keywords
African palaeoenvironments; Soil and plant phytoliths; Acacia-Commiphora woodland and grassland mosaics; Reference collections; East Africa; Analog for early human evolution
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Funding
- Canadian Social Science and Humanities Research Council [895-2016-1017]
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This article studies soil and plant phytoliths from the Eastern Serengeti Plains, specifically the Acacia-Commiphora mosaics from Oldupai Gorge, Tanzania, as present-day analogue for the environment that was contemporaneous with the emergence of the genus Homo. We investigate whether phytolith assemblages from recent soil surfaces reflect plant community structure and composition with fidelity. The materials included 35 topsoil samples and 29 plant species (20 genera, 15 families). Phytoliths were extracted from both soil and botanical samples. Quantification aimed at discovering relationships amongst the soil and plant phytoliths relative distributions through Chi-square independence tests, establishing the statistical significance of the relationship between categorical variables within the two populations. Soil assemblages form a spectrum, or cohort of co-ocurring phytolith classes, that will allow identifying environments similar to those in the Acacia-Commiphora ecozone in the fossil record.
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