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Climate change in the Early Holocene

Date:
January 27, 2022
Source:
University of Oxford
Summary:
新的见解如何我们早期的祖先智慧h major shifts in climate has been revealed.
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新的见解如何我们早期的祖先智慧h major shifts in climate is revealed in research, published today [27 Jan] inNature Ecology & Evolution, by an international team, led by Professor Rick Schulting from Oxford University's School of Archaeology.

It reveals, new radiocarbon dates show the large Early Holocene cemetery of Yuzhniy Oleniy Ostrov, at Lake Onega, some 500 miles north of Moscow, previously thought to have been in use for many centuries, was, in fact, used for only one to two centuries. Moreover, this seems to be in response to a period of climate stress.

The team believes the creation of the cemetery reveals a social response to the stresses caused by regional resource depression. At a time of climate change, Lake Onega, as the second largest lake in Europe, had its own ecologically resilient microclimate. This would have attracted game, including elk, to its shores while the lake itself would have provided a productive fishery. Because of the fall in temperature, many of the region's shallower lakes could have been susceptible to the well-known phenomenon of winter fish kills, caused by depleted oxygen levels under the ice.

The creation of the cemetery at the site would have helped define group membership for what would have been previously dispersed bands of hunter-gatherers -- mitigating potential conflict over access to the lake's resources.

But when the climate improved, the team found, the cemetery largely went out of use, as the people presumably returned to a more mobile way of life and the lake became less central.

The behavioural changes -- to what could be seen as a more 'complex' social system, with abundant grave offerings -- were situation-dependent. But they suggest the presence of important decision makers and, say the team, the findings also imply that early hunting and gathering communities were highly flexible and resilient.

The results have implications for understanding the context for the emergence and dissolution of socioeconomic inequality and territoriality under conditions of socio-ecological stress.

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Radiocarbon dating of the human remains and associated animal remains at the site reveals that the main use of the cemetery spanned between 100-300 years, centring on ca. 8250 to 8,000 BP. This coincides remarkably closely with the 8.2 ka dramatic cooling event, so this site could provide evidence for how these humans responded to a climate-driven environmental change.

全新世(当前的地质时代,began approximately 11,700 years before present) has been relatively stable in comparison to current events. But there are a number of climate fluctuations recorded in the Greenland ice cores. The best known of these is the 8,200 years ago cooling event, the largest climatic downturn in the Holocene, lasting lasted one to two centuries. But there is little evidence that the hunter-gatherers, who occupied most of Europe at this time, were much affected, and if they were, in what specific ways.

Yuzhniy Oleniy Ostrov is one of the largest Early Holocene cemeteries in northern Eurasia, with up to 400 possible graves, 177 of which were excavated in the 1930s by a team of Russian archaeologists. Based on their work, the cemetery site has an important position in European Mesolithic studies, in part because of the variation in the accompanying grave offerings. Some graves lack these entirely, to those with abundant and elaborate offerings.

This research was supported by the Natural Environment Research Council (UK) (NF/2016/1/5) and by the Social Science and Humanities Research Council of Canada (grant nos. 412-2011-1001 and 895-2018-1004). The Kone Foundation also provided support.

Thanks to the Peter the Great Museum of Anthropology and Ethnography/Kunstkamera, St. Petersburg, Russia, for permitting access to the collections in their care.

Story Source:

Materialsprovided byUniversity of Oxford.注:内容可以编辑风格and length.


Journal Reference:

  1. Rick J. Schulting, Kristiina Mannermaa, Pavel E. Tarasov, Thomas Higham, Christopher Bronk Ramsey, Valeri Khartanovich, Vyacheslav Moiseyev, Dmitriy Gerasimov, John O’Shea, Andrzej Weber.Radiocarbon dating from Yuzhniy Oleniy Ostrov cemetery reveals complex human responses to socio-ecological stress during the 8.2 ka cooling event.Nature Ecology & Evolution, 2022; DOI:10.1038/s41559-021-01628-4

Cite This Page:

University of Oxford. "Climate change in the Early Holocene." ScienceDaily. ScienceDaily, 27 January 2022. /releases/2022/01/220127114323.htm>.
University of Oxford. (2022, January 27). Climate change in the Early Holocene.ScienceDaily. Retrieved September 6, 2023 from www.koonmotors.com/releases/2022/01/220127114323.htm
University of Oxford. "Climate change in the Early Holocene." ScienceDaily. www.koonmotors.com/releases/2022/01/220127114323.htm (accessed September 6, 2023).

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