The Kolyma region is historically famous for the unique finds of large Pleistocene fauna, yet, until very recently, absent of the time‐corresponding occupation sites. Quaternary geology and palaeontology investigations (2013–2019) in the middle reaches of the Kolyma River (NE Yakutia) have delivered new evidence on the Last Glacial (MIS 4–2) to Early Holocene sub‐arctic ecosystems and the past landscape dynamics retrieved from the fossiliferous bodies exposed from thawed grounds. The palaeoecology multi‐proxies from the MIS 3 (55–24 ka) cryolithic formations document riparian, larch‐dominated northern forests and open parklands with backwater channels, marshlands and lakes. The abundant skeletal remains of Pleistocene ungulates and carnivores, as well as relic flora point to long‐term biomass‐rich interstadial ecosystems and favourable Palaeolithic occupation habitats. Utilized animal bones, worked mammoth ivory and stone tools show the presence of pre‐modern humans in the northeast Russian Arctic >45 000 years ago. Flaked mammoth tusks suggest persistence of settlement during the Last Glacial Maximum in xeric and extremely cold (sub)arctic tundra. The postglacial climate shifts triggered major environmental and hydrological transformations. The final Pleistocene/Early Holocene warming brought restructuring of the Last Ice Age landscape and vanishing of the periglacial tundra‐steppe replaced by the present‐day larch‐dominated Siberian taiga. The mid‐Last Glacial human ecology records from the geographical limits of northeast Siberia have fundamental relevance for the reconstructions of the time trajectories and the natural conditions of peopling of Beringia.

中文翻译：

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科利马盆地中部的MIS 3–2环境：对东北北极西伯利亚冰河时代的影响

科利马地区在历史上以大型更新世动物群的独特发现而闻名，但是直到最近，还没有时间相对应的占领地。在科利马河中部（东北雅库特）的第四纪地质和古生物学研究（2013-2019年）为早期全新世亚北极生态系统的末次冰河期（MIS 4-2）提供了新的证据，并从中检索了过去的景观动态。从融化的地面露出的化石体。MIS 3（55-24 ka）岩性地层的古生态学多据记录了河岸，落叶松为主的北部森林和有回水通道，沼泽地和湖泊的开放公园。更新世丰富的骨骼有蹄类和食肉动物，以及遗迹植物群都指向长期的生物量丰富的陆栖生态系统和有利的旧石器时代的栖息地。利用动物的骨骼，猛worked象牙和石制工具显示了距今45,000年前的俄罗斯东北北极地区存在的前现代人类。片状的猛mm象牙暗示了在干冰和极冷的（亚）寒带苔原的最后一次冰期末期的沉降持续存在。冰川后的气候变化引发了重大的环境和水文变化。最终的更新世/早期全新世变暖导致了最后一个冰河时代景观的改组和冰原苔原草原的消失，取而代之的是如今的落叶松为主的西伯利亚针叶林。