63306 20171129112117.0 doi 10.1371/journal.pone.0076514 sideral 84186 ART-2013-84186 eng (orcid)0000-0001-6527-3972 Larrasoaña, J.C. Universidad de Zaragoza Dynamics of Green Sahara Periods and Their Role in Hominin Evolution 2013 Access copy available to the general public Unrestricted Astronomically forced insolation changes have driven monsoon dynamics and recurrent humid episodes in North Africa, resulting in green Sahara Periods (GSPs) with savannah expansion throughout most of the desert. Despite their potential for expanding the area of prime hominin habitats and favouring out-of-Africa dispersals, GSPs have not been incorporated into the narrative of hominin evolution due to poor knowledge of their timing, dynamics and landscape composition at evolutionary timescales. We present a compilation of continental and marine paleoenvironmental records from within and around North Africa, which enables identification of over 230 GSPs within the last 8 million years. By combining the main climatological determinants of woody cover in tropical Africa with paleoenvironmental and paleoclimatic data for representative (Holocene and Eemian) GSPs, we estimate precipitation regimes and habitat distributions during GSPs. Their chronology is consistent with the ages of Saharan archeological and fossil hominin sites. Each GSP took 2-3 kyr to develop, peaked over 4-8 kyr, biogeographically connected the African tropics to African and Eurasian mid latitudes, and ended within 2-3 kyr, which resulted in rapid habitat fragmentation. We argue that the well-dated succession of GSPs presented here may have played an important role in migration and evolution of hominins. info:eu-repo/grantAgreement/ES/DGA/E72 info:eu-repo/grantAgreement/ES/MEC/PR2011-0480 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.534 2013 MULTIDISCIPLINARY SCIENCES 8 / 56 = 0.143 2013 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Roberts, A.P. Rohling, E.J. 2000 428 Universidad de Zaragoza Departamento de Ciencias de la Tierra Geodinámica Interna 8, 10 (2013), e76514 [12 pp] PLoS One PLoS One 1932-6203 533861 http://zaguan.unizar.es/record/63306/files/texto_completo.pdf Versión publicada 125273 http://zaguan.unizar.es/record/63306/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:63306 articulos driver 2017-11-29-10:01:05 ARTICLE