Wet phases in the Sahara/Sahel region and human migration patterns in North Africa

Proceedings of the National Academy of Sciences of the United States of America

Volumn 106, Issue 48, 2009, Pages 20159-20163

  Castañeda, Isla S ^a   Mulitza, Stefan ^b   Schefuß, Enno ^b   Dos Santos, Raquel A Lopes ^a   Damsté, Jaap S Sinninghe ^a   Schouten, Stefan ^a  

^a ROYAL NETHERLANDS INSTITUTE FOR SEA RESEARCH   (Netherlands)

^b UNIVERSITY OF BREMEN   (Germany)

Author keywords

Atlantic meridional overturning circulation (AMOC); n alkane carbon isotopes; Vegetation

Indexed keywords

CARBON;

ARTICLE; CHEMICAL COMPOSITION; CLIMATE; CLIMATE CHANGE; FAUNA; HOLOCENE; HUMIDITY; HYDROLOGY; MIGRATION; NORTH AFRICA; PLANT LEAF; PRIORITY JOURNAL; VEGETATION; WETLAND;

AFRICA, NORTHERN; CARBON ISOTOPES; CLIMATE; EMIGRATION AND IMMIGRATION; GEOLOGIC SEDIMENTS; HISTORY, ANCIENT; HUMANS; PLANT LEAVES; WAXES;

EID: 73949098545     PISSN: 00278424     EISSN: 10916490     Source Type: Journal    
DOI: 10.1073/pnas.0905771106     Document Type: Article

References (36)

1. DeMenocal P, et al. (2000) Abrupt onset and termination of the African Humid Period: Rapid climate responses to gradual insolation forcing. Q Sci Rev 19:347-361.
2. Kuper R, Kröpelin S (2006) Climate-controlled Holocene occupation in the Sahara: Motor of Africa's evolution. Science 313:803-807.
3. Claussen M, et al. (1999) Simulation of an abrupt change in Saharan vegetation in the mid-Holocene. Geophys Res Lett 26:2037-2040.
4. Schefuß E, Schouten S, Jansen JHF, Sinninghe Damsté JS (2003) African vegetation controlled by tropical sea surface temperatures in the mid-Pleistocene period. Nature 422:418-421.
5. Behrensmeyer AK (2006) Climate change and human evolution. Science 311:476-478.
6. Lloyd J, et al. (2008) Contributions of woody and herbaceous vegetation to tropical savanna ecosystem productivity: A quasi-global estimate. Tree Physiol 28:451-468.
7. 4 vegetation: Carbon cycle implications. Global Biogeochem Cy 17:1006,10.1029/2001GB001807.
8. Sarnthein M, Tetzlaff G, Koopmann B, Wolter K, Pflaumann U (1981) Glacial and interglacial wind regimes over the Eastern Subtropical Atlantic and Northwest Africa. Nature 293:193-196.
9. Grousset FE, et al. (1998) Saharan wind regimes traced by the Sr-Nd isotopic composition of subtropical Atlantic sediments: Last Glacial maximum vs today. Q Sci Rev 17:395-409.
10. Cole JM, Goldstein SL, deMenocal PB, Hemming SR, Grousset FE (2009) Contrasting compositions of Saharan dust in the eastern Atlantic Ocean during the last deglaciation and African Humid Period. Earth Planet Sci Lett 278:257-266.
11. 4 plant input from North West Africa into North East Atlantic sediments. Geochim Cosmochim Acta 64:3505-3513.
12. Tjallingii R, et al. (2008) Coherent high- and low-latitude control of the northwest African hydrological balance. Nat Geosci 1:670-675.
13. Kutzbach JE, Street-Perrott FA (1985) Milankovitch forcing of fluctuations in the level of tropical lakes from 18 to 0 Kyr BP. Nature 317:130-134.
14. Berger A, Loutre MF (1991) Insolation values for the climate of the last 10 million years. Q Sci Rev 10:297-317.
15. Mulitza S, et al. (2008) Sahel megadroughts triggered by glacial slowdowns of Atlantic meridional overturning. Paleoceanography 23:PA4206-1-PA4206-11.
16. Chang P, et al. (2008) Oceanic link between abrupt changes in the North Atlantic Ocean and the African monsoon. Nat Geosci 1:444-448.
17. Chiang JCH, Cheng W, Bitz CM (2008) Fast teleconnections to the tropical Atlantic sector from Atlantic thermohaline adjustment. Geophys Res Lett 35:L07704; 10.1029/ 2008GL033292.
18. Vidal L, et al. (1997) Evidence for changes in the North Atlantic deep water linked to meltwater surges during the Heinrich events. Earth Planet Sci Lett 146:13-27.
19. McManus JF, et al. (2004) Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes. Nature 428:834-837.
20. Duplessy JC, Shackleton NJ (1985) Response of global deep-water circulation to Earth's climatic change 135,000-107,000 years ago. Nature 316:500-507.
21. Carto SL, Weaver AJ, Hetherington R, Lam Y, Wiebe E (2009) Out of Africa and into an ice age: On the role of global climate change in the late Pleistocene migration of early modern humans out of Africa. J Hum Evol 56:139-161.
22. McDougall I, Brown FH, Fleagle JG (2005) Stratigraphic placement and age of modern humans from Kibish, Ethiopia. Nature 433:733-736.
23. Stringer C (2000) Palaeoanthropology: Coasting out of Africa. Nature 405:24-27.
24. Osborne AH, et al. (2008) A humid corridor across the Sahara for the migration of early modern humans out of Africa 120,000 years ago. Proc Natl Acad Sci USA 105:16444 -16447.
25. deNoblet N, Braconnot P, Joussaume S, Masson V (1996) Sensitivity of simulated Asian and African summer monsoons to orbitally induced variations in insolation 126, 115, and 6 kBP. Clim Dyn 12:589-603.
26. Armitage SJ, et al. (2007) Multiple phases of north African humidity recorded in lacustrine sediments from the fazzan basin, Libyan sahara. Q Geochronol 2:181-186.
27. Gaven C, Hillairemarcel C, Petitmaire N (1981) A Pleistocene lacustrine episode in Southeastern Libya. Nature 290:131-133.
28. Rohling EJ, et al. (2002) African monsoon variability during the previous interglacial maximum. Earth Planet Sci Lett 202:61-75.
29. Mellars P (2006) Going east: New genetic and archaeological perspectives on the modern human colonization of Eurasia. Science 313:796-800.
30. Forster P, Torroni A, Renfrew C, Rohl A (2001) Phylogenetic star contraction applied to Asian and Papuan mtDNA evolution. Mol Biol Evol 18:1864-1881.
31. Olivieri A, et al. (2006) The mtDNA legacy of the Levantine early Upper Palaeolithic in Africa. Sciencem 314:1767-1770.
32. Zuppi GM, Sacchi E (2004) Hydrogeology as a climate recorder: Sahara-Sahel (North Africa) and the Po Plain (Northern Italy). Global Planet Change 40:79-91.
33. Weldeab S, Lea DW, Schneider RR, Andersen N (2007) 155,000 years of West African monsoon and ocean thermal evolution. Science 316:1303-1307.
34. Shea JJ (2008) Transitions or turnovers? Climatically forced extinctions of Homo sapiens and Neanderthals in the east Mediterranean Levant. Q Sci Rev 27:2253-2270.
35. White F (1983) The Vegetation of Africa, A Descriptive Memoir to Accompany the UNESCO/AETFAT/UNSO Vegetation Map of Africa (United Nations Educational, Scientific, and Cultural Organization, Paris).
36. Nicholson SE, Grist JP (2003) The seasonal evolution of the atmospheric circulation over West Africa and equatorial Africa. J Clim 16:1013-1030.