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Environmental DNA signatures distinguish between tsunami and storm deposition in overwash sand

Earth Sciences

Environmental DNA signatures distinguish between tsunami and storm deposition in overwash sand

W. Yap, A. D. Switzer, et al.

This groundbreaking research by Wenshu Yap and colleagues reveals how environmental DNA analysis can effectively differentiate between tsunami and storm deposits in coastal regions. By examining microbial communities in Cuddalore, India, and Phra Thong Island, Thailand, the study uncovers significant insights into how these devastating events leave their mark on the environment.

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Playback language: English
Abstract
Distinguishing tsunami deposits from storm deposits in coastal areas is challenging due to their similar sedimentary characteristics. This study analyzes environmental DNA (eDNA) from microbial communities preserved in known tsunami and storm deposits, as well as intercalating soils and sediments, from Cuddalore, India, and Phra Thong Island, Thailand. The results show significant differences in microbial communities between overwash deposits and non-overwash sediments at both locations. The method successfully discriminates between tsunami and storm deposits, suggesting eDNA analysis as a powerful tool for identifying overwash deposits from catastrophic events.
Publisher
Communications Earth & Environment
Published On
Jun 18, 2021
Authors
Wenshu Yap, Adam D. Switzer, Chris Gouramanis, Ezequiel Marzinelli, Winona Wijaya, Yu Ting Yan, Dale Dominey-Howes, Maurizio Labbate, Seshachalam Srinivasulu, Kruawun Jankaew, Federico M. Lauro
Tags
tsunami deposits
storm deposits
environmental DNA
microbial communities
Cuddalore
Phra Thong Island
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