Revisiting past savanna environments: Pollen analysis of the Colbyn wetland on the southern African central plateau

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-07 DOI:10.1016/j.revpalbo.2024.105198

A.C. van Aardt , L. Scott , P.-L. Grundling , A.T. Grundling , S. Woodborne

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Abstract

A high-resolution, radiocarbon dated, pollen sequence of the ecotone between the Grassland and Savanna Biomes, was extracted from a 2.5 m peat core at the Colbyn wetland in South Africa. The lithology indicates transitions between organic sediment, clay, and well-preserved peat layers. The pollen and micro-charcoal records suggest interactions between the seasonal climate, burning and possible human and other disturbance. The vegetation development over the last 4000 cal yr BP is compared with chronologically parallel pollen sequences from the nearby Moreleta River and Rietvlei Dam sequences. The study, that can be correlated with wider regional isotopic records of the region, shows drier conditions c. 3800 to 3400 cal yr BP, and around 800 cal yr BP, and a wetter phase at Colbyn c. 3000–1500 cal yr BP.

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重温过去的热带草原环境：对南部非洲中部高原科尔宾湿地的花粉分析

从南非科尔宾湿地的 2.5 米泥炭岩芯中提取了草地生物群落和热带草原生物群落之间生态区的高分辨率、放射性碳年代测定花粉序列。岩性显示了有机沉积物、粘土和保存完好的泥炭层之间的过渡。花粉和微炭记录表明，季节性气候、焚烧以及可能的人为干扰和其他干扰之间存在相互作用。该研究将公元前 4000 年的植被发展情况与附近莫雷塔河和里特弗莱大坝序列中年代平行的花粉序列进行了比较。该研究可与该地区更广泛的区域同位素记录相关联，显示出公元前 3800 至 3400 卡年以及公元前 800 卡年左右较为干燥的条件，以及公元前 3000 至 1500 卡年科尔宾较为湿润的阶段。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.