Increased ecological resource variability during a critical transition in hominin evolution.
Increased ecological resource variability during a critical transition in hominin evolution.
复制标题
DOI：
10.1126/sciadv.abc8975
复制
发表时间：
2020-10
期刊：
影响因子：
13.6
通讯作者：
Uno K
中科院分区：
文献类型：
--
作者：
Potts R;Dommain R;Moerman JW;Behrensmeyer AK;Deino AL;Riedl S;Beverly EJ;Brown ET;Deocampo D;Kinyanjui R;Lupien R;Owen RB;Rabideaux N;Russell JM;Stockhecke M;deMenocal P;Faith JT;Garcin Y;Noren A;Scott JJ;Western D;Bright J;Clark JB;Cohen AS;Keller CB;King J;Levin NE;Brady Shannon K;Muiruri V;Renaut RW;Rucina SM;Uno K
早期智人的适应特征在向不稳定的环境和不可预测的资源的转变中占了上风。尽管气候变化被认为是非洲人类进化的大规模驱动因素，但生态资源的景观尺度变化可能形成了新的人类适应能力，但很少有人对此进行研究。我们使用年代久远、高分辨率的钻孔岩心数据集来了解与距取心地点24公里的考古记录中主要适应性转变相关的生态动力学。露头化石保存了50万至30万年前中石器时代（MSA）技术、认知和社会创新取代阿舍利人的证据，与此同时，食草哺乳动物发生了大规模的分类和适应性更替。从大约400 ka以前开始，构造、水文和生态变化共同破坏了相对稳定的资源基础，促使淡水供应、草地群落和木本植物覆盖的波动幅度越来越大。这些因素的相互作用为MSA适应的进化成功提供了一个资源导向的假设，这可能有助于智人觅食者典型的生态灵活性。
Adaptations characteristic of early Homo sapiens prevailed during a shift to unstable environment and less predictable resources. Although climate change is considered to have been a large-scale driver of African human evolution, landscape-scale shifts in ecological resources that may have shaped novel hominin adaptations are rarely investigated. We use well-dated, high-resolution, drill-core datasets to understand ecological dynamics associated with a major adaptive transition in the archeological record ~24 km from the coring site. Outcrops preserve evidence of the replacement of Acheulean by Middle Stone Age (MSA) technological, cognitive, and social innovations between 500 and 300 thousand years (ka) ago, contemporaneous with large-scale taxonomic and adaptive turnover in mammal herbivores. Beginning ~400 ka ago, tectonic, hydrological, and ecological changes combined to disrupt a relatively stable resource base, prompting fluctuations of increasing magnitude in freshwater availability, grassland communities, and woody plant cover. Interaction of these factors offers a resource-oriented hypothesis for the evolutionary success of MSA adaptations, which likely contributed to the ecological flexibility typical of Homo sapiens foragers.
登录
查看更多内容
影响因子：
56.9
作者：
Brooks, Alison S.;Yellen, John E.;Clark, Jennifer B.
通讯作者：
Clark, Jennifer B.
影响因子：
4.9
作者：
Behrensmeyer, Anna K.;Potts, Richard;Deino, Alan
通讯作者：
Deino, Alan
DOI：
10.1007/978-94-017-9849-5_9
发表时间：
2015-01-01
期刊：
MICRO-XRF STUDIES OF SEDIMENT CORES: APPLICATIONS OF A NON-DESTRUCTIVE TOOL FOR THE ENVIRONMENTAL SCIENCES
影响因子：
--
作者：
Brown, Erik T.
通讯作者：
Brown, Erik T.
影响因子：
2.9
作者：
CERLING, TE
通讯作者：
CERLING, TE
影响因子：
2.3
作者：
Ashley, Gail M.;Barboni, Doris;Baquedano, Enrique
通讯作者：
Baquedano, Enrique