Cited by 679Geology and Paleoclimatology ResearchEcosystem dynamics and resilienceAeolian processes and effects

Climate-driven ecosystem succession in the Sahara: the past 6000 years

Kröpelin, S., Verschuren, D., Lézine, A.-M., Eggermont, H., Cocquyt, C., Francus, P., Cazet, J.-P., Fagot, M. +7 more·2008·Science

Abstract

Desiccation of the Sahara since the middle Holocene has eradicated all but a few natural archives recording its transition from a "green Sahara" to the present hyperarid desert. Our continuous 6000-year paleoenvironmental reconstruction from northern Chad shows progressive drying of the regional terrestrial ecosystem in response to weakening insolation forcing of the African monsoon and abrupt hydrological change in the local aquatic ecosystem controlled by site-specific thresholds. Strong reductions in tropical trees and then Sahelian grassland cover allowed large-scale dust mobilization from 4300 calendar years before the present (cal yr B.P.). Today's desert ecosystem and regional wind regime were established around 2700 cal yr B.P. This gradual rather than abrupt termination of the African Humid Period in the eastern Sahara suggests a relatively weak biogeophysical feedback on climate.

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Crossref · 10.1126/science.1154913

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42 of 42 references verified0 citation errors · 0 not checkable

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  • The mirroring of HGF and some Western African crop domestication is ascribed to cultural responses to the transition from a green Sahara to desert and subsequent climate changes.

    “which are ascribed to cultural responses to the transition from a “green Sahara” to the desert and subsequent climate changes (Kropelin et al. 2008).”

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Authors
Kröpelin, S., Verschuren, D., Lézine, A.-M., Eggermont, H., Cocquyt, C., Francus, P., Cazet, J.-P., Fagot, M., Rumes, B., Russell, J. M., Darius, F., Conley, D. J., Schuster, M., von Suchodoletz, H., & Engstrom, D. R.
Affiliations
  • Africa Research Unit, Institute of Prehistoric Archaeology, University of Cologne, Jennerstraße 8, D-50823 Köln, Germany.
  • Meise Botanic Garden (BE)
  • Science Museum of Minnesota (US)
Venue
Science
Published
2008-05-09
Volume
320
Issue
5877
Pages
765-768
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2014574812
Cited by
679
References
42
Citations by year
2026: 17 · 2025: 25 · 2024: 24 · 2023: 25 · 2022: 34 · 2021: 40 · 2020: 28 · 2019: 51 · 2018: 63 · 2017: 36 · 2016: 36 · 2015: 46 · 2014: 31 · 2013: 63 · 2012: 43
FWCI
24.43
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion)
  • EspaceINRS (National Institute for Scientific Research (Canada)) (submittedVersion)
  • Publication Database GFZ (GFZ German Research Centre for Geosciences) (submittedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Environmental Science › Global and Planetary Change › Ecosystem dynamics and resilience
  • Physical Sciences › Earth and Planetary Sciences › Earth-Surface Processes › Aeolian processes and effects
Keywords
African Humid Period, Holocene climate, paleoenvironmental reconstruction, northern Chad, tropical trees, dust mobilization, African monsoon, insolation forcing, hydrological change, biogeophysical feedbacks, desertification, wind regime
MeSH terms
Africa, Desert Climate, Biological Evolution, Fresh Water, Plants, Time, Weather, Ecosystem, Geologic Sediments, History, Ancient

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