A new terrestrial palaeoenvironmental record from the Bering Land Bridge and context for human dispersal
- Title
- A new terrestrial palaeoenvironmental record from the Bering Land Bridge and context for human dispersal
- Author
- 최경철
- Keywords
- Beringia; stable isotopes; diatoms; cladocerans; chironomids; environmental change
- Issue Date
- 2018-06
- Publisher
- ROYAL SOC
- Citation
- ROYAL SOCIETY OPEN SCIENCE, v. 5, No. 6, Article no. 180145
- Abstract
- Palaeoenvironmental records from the now-submerged Bering Land Bridge (BLB) covering the Last Glacial Maximum
(LGM) to the present are needed to document changingenvironments and connections with the dispersal of humans
into North America. Moreover, terrestrially based records of environmental changes are needed in
close proximity to the re-establishment of circulation between Pacific and Atlantic Oceans following
the end of the last glaciation to test palaeo-climate models for the high latitudes. We present the
first terrestrial temperature and hydrologic reconstructions from the LGM to the present from the
BLB’s south-central margin. We find that the timing of the earliest unequivocal human dispersals into
Alaska, based on archaeological evidence, corresponds with a shift to warmer/wetter conditions on
the BLB between 14 700 and 13 500 years ago associated with the early Bølling/Allerød interstadial
(BA). These environmental changes could have provided the impetus for eastward human dispersal
at that time, from Western or central Beringia after a protracted human population standstill. Our
data indicate substantial climate-induced environmental changes on the BLB since the LGM, which
would potentially have had significant influences on megafaunal and human biogeography in the
region.
- URI
- https://royalsocietypublishing.org/doi/full/10.1098/rsos.180145https://repository.hanyang.ac.kr/handle/20.500.11754/81113
- ISSN
- 2054-5703
- DOI
- 10.1098/rsos.180145
- Appears in Collections:
- COLLEGE OF LANGUAGES & CULTURES[E](국제문화대학) > CULTURAL ANTHROPOLOGY(문화인류학과) > Articles
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