Revealing seasonal woolly mammoth migration with spatially-resolved trace element, Sr and O isotopic records of molar enamel
Revealing seasonal woolly mammoth migration with spatially-resolved trace element, Sr and O isotopic records of molar enamel
复制标题
利用臼齿釉质的空间分辨微量元素、Sr 和 O 同位素记录揭示猛犸象的季节性迁徙
DOI：
10.1016/j.quascirev.2023.108036
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发表时间：
2023
影响因子：
4
通讯作者：
M. Matyszczak
中科院分区：
文献类型：
--
作者：
Nina Kowalik;R. Anczkiewicz;Wolfgang Müller;C. Spötl;L. Bondioli;A. Nava;P. Wojtal;J. Wilczyński;Marta Koziarska;M. Matyszczak
我们调查了旧石器时代晚期长毛猛犸（猛犸象）的流动模式，从波兰南部的克拉科夫Spadzista网站，在欧洲最大的猛犸骨堆积之一。我们进行了激光消融（MC-）ICPMS Sr同位素和微量元素浓度的测量，伴随着空间分辨的氧同位素测量的最后一个上臼齿（M6）的牙釉质。我们的研究记录了良好的保存ofin vivo地球化学和同位素记录，并揭示了在两个端元之间振荡的87 Sr/86 Sr的重复变化，并与δ 18 O的类似变化以及U和Sr浓度相关。所观察到的周期性对应于釉质矿化的年度周期，如釉质组织学所揭示的，并记录了长毛猛犸象在单个牙板中长达11年的生命。釉质矿化的持续时间和Sr和O同位素记录之间的高度相关性表明，猛犸迁移到两个地区之间的不同的Sr同位素组成以及特征U和Sr浓度，大概是被迫的季节性食物供应。猛犸在冬季在波兰南部放牧，如较低的δ 18 O值所示，夏季可能向北移动250-400 km至波兰中部。这种迁移模式在动物成年后的至少12-13年内保持稳定，如在该臼齿中所存档的。我们的研究记录了一个固定的移动行为的成年猛犸约10,000年前的最后一次冰期。
We investigated the mobility pattern of an Upper Palaeolithic woolly mammoth (Mammuthus primigenius) from the Kraków Spadzista site in southern Poland, one of the largest mammoth bone accumulations in Europe. We conductedin situlaser ablation (MC-) ICPMS Sr isotopic and trace element concentration measurements accompanied by spatially-resolved oxygen isotope measurements of dental enamel on a last upper molar tooth (M6). Our study documents excellent preservation ofin vivogeochemical and isotopic records and reveals recurring changes in87Sr/86Sr that oscillate between two endmembers and correlate with analogous variations in δ18O, as well as U and Sr concentrations. The observed periodicity corresponds to annual cycles of enamel mineralization as revealed by enamel histology and documents up to 11 years of woolly mammoths' life in a single dental plate. The high degree of correlation between the duration of enamel mineralization and the Sr and O isotopic records suggests that the mammoth migrated between two areas of distinct Sr isotopic composition as well as characteristic U and Sr concentrations, presumably forced by seasonal food availability. The mammoth grazed in southern Poland in winter time as indicated by lower δ18O values and likely moved 250–400 km northwards to the Polish midlands during summer. This migration pattern remained stable for at least 12–13 years of the animal's adult life as archived in this molar tooth. Our study documents a fixed mobility behaviour of an adult mammoth some 10,000 years before the Last Glacial Maximum.