Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1371/journal.pone.0076514 |
Dynamics of Green Sahara Periods and Their Role in Hominin Evolution | |
Larrasoana, Juan C.1,2; Roberts, Andrew P.2; Rohling, Eelco J.2,3 | |
通讯作者 | Larrasoana, Juan C. |
来源期刊 | PLOS ONE
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ISSN | 1932-6203 |
出版年 | 2013 |
卷号 | 8期号:10 |
英文摘要 | 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. |
类型 | Article |
语种 | 英语 |
国家 | Spain ; Australia ; England |
收录类别 | SCI-E ; SSCI ; AHCI |
WOS记录号 | WOS:000326019400068 |
WOS关键词 | DAKHLA OASIS REGION ; WESTERN DESERT ; NORTH-AFRICA ; MONSOON VARIABILITY ; LATE QUATERNARY ; PLUVIAL EPISODES ; HUMAN DISPERSAL ; WATER-BALANCE ; PAST CLIMATE ; FAZZAN BASIN |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/179427 |
作者单位 | 1.Inst Geol & Minero Espana, Zaragoza, Spain; 2.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; 3.Univ Southampton, Sch Ocean & Earth Sci, Natl Oceanog Ctr, Southampton, Hants, England |
推荐引用方式 GB/T 7714 | Larrasoana, Juan C.,Roberts, Andrew P.,Rohling, Eelco J.. Dynamics of Green Sahara Periods and Their Role in Hominin Evolution[J],2013,8(10). |
APA | Larrasoana, Juan C.,Roberts, Andrew P.,&Rohling, Eelco J..(2013).Dynamics of Green Sahara Periods and Their Role in Hominin Evolution.PLOS ONE,8(10). |
MLA | Larrasoana, Juan C.,et al."Dynamics of Green Sahara Periods and Their Role in Hominin Evolution".PLOS ONE 8.10(2013). |
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