Sediment Environmental DNA (eDNA) Analysis of Lake Ochaul

Summary

This is an abstract from the "Northeast Asian Prehistoric Hunter-Gather Lifeways: Multidisciplinary, Individual Life History Approach" session, at the 88th annual meeting of the Society for American Archaeology.

Detailed reconstruction of paleo-ecosystems is the key for understanding the interactions of climate changes, ecological variation, and human activities. In this study, we applied novel environmental DNA (eDNA) shotgun metagenomics methods on the ancient eDNA isolated from the lake sediments of Lake Ochaul, a small lake in east Siberia located to the west of Lake Baikal, to reconstruct the comprehensive ecological successions of the region in late-glacial and Holocene (from 13.3 to 4.2 thousand years BP). Main findings include (1) a quick and intensive vegetation turnover occurred during the Pleistocene/Holocene transition, from dry steppe to a mix of wetland aquatic and peatland plants; (2) no big-body mammals detected; animal taxa were instead mainly birds, fishes, and insects, which had a higher diversity in the Holocene; and (3) microbiota also responded to the climate changes, but different microbial communities changed differently.

This Resource is Part of the Following Collections

• Northeast Asian Prehistoric Hunter-Gather Lifeways: Multidisciplinary, Individual Life History Approach   •
• Society for American Archaeology 88th Annual Meeting, Portland, OR (2023)

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Record Identifiers

Abstract Id(s): 36205.0