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A phytolith supported biosphere-hydrosphere predictive model for southern Ethiopia: insights into paleoenvironmental changes and human landscape preferences since the last glacial maximum

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dc.contributor.author Fischer, Markus L.
dc.contributor.author Bachofer, Felix
dc.contributor.author Yost, Chad L.
dc.contributor.author Bludau, Ines J. E.
dc.contributor.author Schepers, Christian
dc.contributor.author Foerster, Verena
dc.contributor.author Lamb, Henry
dc.contributor.author Schäbitz, Frank
dc.contributor.author Asrat, Asfawossen
dc.contributor.author Trauth, Martin H.
dc.contributor.author Junginger, Annett
dc.date.accessioned 2022-06-28T10:21:36Z
dc.date.available 2022-06-28T10:21:36Z
dc.date.issued 2021-10-08
dc.identifier.citation Fischer, M. L. et al. (2021) A phytolith supported biosphere-hydrosphere predictive model for southern Ethiopia: insights into paleoenvironmental changes and human landscape preferences since the last glacial maximum. Geosciences, 11(10), 418. https://doi.org/10.3390/geosciences11100418. en_US
dc.identifier.issn 2076-3263
dc.identifier.uri http://repository.biust.ac.bw/handle/123456789/463
dc.description.abstract During the past 25 ka, southern Ethiopia has undergone tremendous climatic changes, from dry and relatively cold during the Last Glacial Maximum (LGM, 25–18 ka) to the African Humid Period (AHP, 15–5 ka), and back to present-day dry conditions. As a contribution to better understand the effects of climate change on vegetation and lakes, we here present a new Predictive Vegetation Model that is linked with a Lake Balance Model and available vegetation-proxy records from southern Ethiopia including a new phytolith record from the Chew Bahir basin. We constructed a detailed paleo-landcover map of southern Ethiopia during the LGM, AHP (with and without influence of the Congo Air Boundary) and the modern-day potential natural landcover. Compared to today, we observe a 15–20% reduction in moisture availability during the LGM with widespread open landscapes and only few remaining forest refugia. We identify 25–40% increased moisture availability during the AHP with prevailing forests in the mid-altitudes and indications that modern anthropogenic landcover change has affected the water balance. In comparison with existing archaeological records, we find that human occupations tend to correspond with open landscapes during the late Pleistocene and Holocene in southern Ethiopia. en_US
dc.description.sponsorship This research was funded by the PhD scholarship from the Stiftung der deutschen Wirtschaft and the project “Wet Feet or Walking on Sunshine” financed by the Ministry of Culture and Science (MWK) of Baden Württemberg, Germany. The drilling and analysis of the “short” cores of Chew Bahir were mainly financed by the Collaborative Research Center (CRC) 806, Project Number 57444011 at University of Cologne, to a project outlined by FS and the International Continental Scientific Drilling Program (ICDP) (grant numbers TR 419/9-1,2 and SCHA 472/18-1,2). en_US
dc.language.iso en en_US
dc.publisher MDPI en_US
dc.subject Predictive vegetation model en_US
dc.subject Boosted regression trees en_US
dc.subject Lake balance model en_US
dc.subject East African rift system en_US
dc.subject Ethiopia en_US
dc.subject Chew Bahir en_US
dc.subject Phytoliths en_US
dc.subject African humid period en_US
dc.subject Last glacial maximum en_US
dc.title A phytolith supported biosphere-hydrosphere predictive model for southern Ethiopia: insights into paleoenvironmental changes and human landscape preferences since the last glacial maximum en_US
dc.description.level phd en_US
dc.description.accessibility unrestricted en_US
dc.description.department mge en_US


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