Project description
Understanding hominin dispersal to southern Africa in the Plio-Pleistocene
Modern humans migrated to colder regions out of Africa during the Pleistocene, but evidence suggests that early hominins inhabited temperate zones in South Africa millions of years ago. The ERC-funded PLIODIS project will explore changes in the Kalahari/proto-Limpopo basin and examine the hominin fossil record to better understand species diversity, gene flow, and dispersal patterns in deep time. The project will test several hypotheses: that early hominin ranges in East Africa expanded and contracted with changing wet and dry phases, that shifts in dispersal corridors led to intermittent gene flow between East African and South African populations, and that tectonic changes eventually turned the Zambezi River into a significant barrier, prompting South African hominins to adapt to distinct ecological niches.
Objective
Modern humans are unique in their ability to adapt to, and to thrive in, different environments. This trait facilitated their dispersal out-of-Africa to higher latitudes, i.e. to temperate and seasonal habitats, during the Pleistocene. However, there are Plio-Pleistocene hominins at higher latitudes in South Africa (SA) from ~3.7Ma onwards. Did human behavioural/physiological flexibility evolve early in our evolutionary history? Alternatively, did Pliocene hominins occupy such temperate zones due to different palaeoclimatic conditions in deep time and/or due to stochastic events? To untangle these questions this project will: (1) determine the geomorphological and palaeoecological changes in the Kalahari/proto-Limpopo basin, (2) create dynamic palaeo-precipitation/-vegetation models from various archives, (3) carry out detailed anatomical, functional and morphometric analyses of the hominin fossil record and (4) combine the datasets to appraise species diversity (functional adaptations), geneflow (hybridization) and dispersal scenarios (palaeobiogeography). 3 key working hypotheses underlie the proposal:
1. >2.6Ma East African (EA) hominin ranges expanded/contracted in accord with wet and dry phases; periodically, the southernmost populations became reproductively isolated. Early SA hominins represent descendants of Australopithecus anamensis and Australopithecus afarensis, respectively.
2. ~2.6-1.5Ma With the onset of the Northern Hemisphere Glaciation and the re-organisation of the drainage pattern within the Kalahari basin, dispersal corridors repeatedly closed (vicariance) and opened, resulting in intermittent levels of gene flow (i.e. hybridization) between EA and SA hominins.
3. <~1.5Ma Tectonic and hydrographic changes led to the Zambezi River becoming a powerful barrier during the Pleistocene. SA hominins younger than 1.5Ma are likely the result of endemism; competitive exclusion amongst these hominins resulted in exploitation of distinct ecological niches
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- humanities history and archaeology history
- natural sciences earth and related environmental sciences physical geography glaciology
- social sciences sociology anthropology physical anthropology
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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HORIZON.1.1 - European Research Council (ERC)
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
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(opens in new window) ERC-2023-ADG
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60325 FRANKFURT
Germany
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