德国Eifel Auel填充Maar沉积物岩心中MIS 3基岩和基岩间10-8的植被动态和大型食草动物的存在

IF 2.3 Q2 GEOSCIENCES, MULTIDISCIPLINARY Quaternary Pub Date : 2023-08-07 DOI:10.3390/quat6030044
Sarah Britzius, F. Sirocko
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引用次数: 1

摘要

我们在德国Eifel的Auel填充maar沉积物岩心中记录了粪亲真菌的花粉和孢子,时间跨度为42,000至36,000年。植被覆盖以北方森林为主,由草原和寒温带木材类群组成。间伐期木材类群比例较高,间伐期草原植被比例较突出。在海因里希时期,温带类群基本不存在。嗜粪真菌的孢子表明,巨型食草动物持续存在,尽管在具有丰富草原草本植物的草原环境扩大的阶段,其数量更多。随着格陵兰岛的开始,森林变得更加开阔,使得草原环境得以进化。植被覆盖的变化与食草动物生物量的最高值相吻合,当时尼安德特人灭绝,解剖学上的现代人最有可能到达中欧和西欧。巨型食草动物的生物量是植被覆盖/食物资源可用性的直接结果,因此是气候变化的间接结果。大型食草动物跟随合适的栖息地(草原)迁徙可能是AMH迁移到欧洲的一个原因,它们和猎物一起前往多产的狩猎场。
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Vegetation Dynamics and Megaherbivore Presence of MIS 3 Stadials and Interstadials 10–8 Obtained from a Sediment Core from Auel Infilled Maar, Eifel, Germany
We present a record of pollen and spores of coprophilous fungi from a sediment core from Auel infilled maar, Eifel, Germany, covering the period from 42,000 to 36,000 yr b2k. We can show that vegetation cover was dominated by a boreal forest with components of steppe and cold-temperate wood taxa. The proportion of wood taxa was higher during interstadials, whereas steppe-vegetation became more prominent during stadials. During Heinrich stadial 4, temperate taxa are mostly absent. Spores of coprophilous fungi show that megaherbivores were continuously present, albeit in a larger number during stadials when steppe environment with abundant steppe herbs expanded. With the onset of Greenland stadial 9, forests became more open, allowing for steppe-environment to evolve. The shift in vegetation cover coincides with the highest values of herbivore biomass at the time that Neanderthal humans demised and Anatomically Modern Humans most probably arrived in Central and Western Europe. Megaherbivore biomass was a direct consequence of vegetation cover/availability of food resources and thus an indirect consequence of a changing climate. Herds of large herbivores following suitable (steppe) habitats may have been one cause of the migration of AMH into Europe, going along with their prey to productive hunting grounds.
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来源期刊
Quaternary
Quaternary GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
3.30
自引率
4.30%
发文量
44
审稿时长
11 weeks
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