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However, despite the vast potential of research involving <jats:sup>87<\/jats:sup>Sr\/<jats:sup>86<\/jats:sup>Sr analysis particularly in Africa, Sr isoscapes remain unavailable for the largest parts of the continent. Here, we measure the <jats:sup>87<\/jats:sup>Sr\/<jats:sup>86<\/jats:sup>Sr ratios in 778 environmental samples from 24 African countries and combine this data with published data to model a bioavailable Sr isoscape for sub-Saharan Africa using random forest regression. We demonstrate the efficacy of this Sr isoscape, in combination with other lines of evidence, to trace the African roots of individuals from historic slavery contexts, particularly those with highly radiogenic <jats:sup>87<\/jats:sup>Sr\/<jats:sup>86<\/jats:sup>Sr ratios uncommon in the African Diaspora. Our study provides an extensive African <jats:sup>87<\/jats:sup>Sr\/<jats:sup>86<\/jats:sup>Sr dataset which includes scientifically marginalized regions of Africa, with significant implications for the archaeology of the transatlantic slave trade, wildlife ecology, conservation, and forensics.<\/jats:p>","DOI":"10.1038\/s41467-024-55256-0","type":"journal-article","created":{"date-parts":[[2024,12,30]],"date-time":"2024-12-30T17:39:20Z","timestamp":1735580360000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Strontium isoscape of sub-Saharan Africa allows tracing origins of victims of the transatlantic slave 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