Investigating geological records of tsunamis in western Thailand with environmental DNA
The identification of tsunami deposits in the geological record remains a challenge because the proxies availabilities are subject to the environment. The proxies may degrade over time and inherently inhibit the robustness of event interpretations. Multi-proxy methods, which leverage on each other&#...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/171810 |
| _version_ | 1826122333702586368 |
|---|---|
| author | Yap, Wenshu Switzer, Adam D. Gouramanis, Chris Horton, Benjamin Peter Marzinelli, Ezequiel Miguel Wijaya, Winona Yan, Yu Ting Dominey-Howes, Dale Labbate, Maurizio Jankaew, Kruawun Lauro, Federico M. |
| author2 | Asian School of the Environment |
| author_facet | Asian School of the Environment Yap, Wenshu Switzer, Adam D. Gouramanis, Chris Horton, Benjamin Peter Marzinelli, Ezequiel Miguel Wijaya, Winona Yan, Yu Ting Dominey-Howes, Dale Labbate, Maurizio Jankaew, Kruawun Lauro, Federico M. |
| author_sort | Yap, Wenshu |
| collection | NTU |
| description | The identification of tsunami deposits in the geological record remains a challenge because the proxies availabilities are subject to the environment. The proxies may degrade over time and inherently inhibit the robustness of event interpretations. Multi-proxy methods, which leverage on each other's advantage/s and limitation/s, are employed to improve the identification of tsunami deposits from the geological record. Here, we assess the utility of environmental DNA (eDNA) for tsunami research by comparing and contrasting the eDNA collected from a sequence of well-documented palaeotsunami deposits spanning the past three millennia. We study swales in a coastal beach ridge sequences on Phra Thong Island, Thailand and test if eDNA can robustly discriminate the tsunami-deposited sand sheets that intercalate between the non-tsunami derived organic mud layers. Our results indicate that the 2004 Indian Ocean tsunami deposit and preceding tsunami deposits (approximately 550 to 700 years ago) contain microbial communities that differ significantly from the overlying and underlying organic mud layers (p-value = 0.0269) but the signal becomes restricted in the older sediment layers up to 2800-year-old that are constantly submerged in groundwater. This work demonstrates the potential for applying eDNA to study tsunami deposits over centennial time frames and perhaps longer. |
| first_indexed | 2024-10-01T05:46:47Z |
| format | Journal Article |
| id | ntu-10356/171810 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:46:47Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1718102023-11-13T15:30:46Z Investigating geological records of tsunamis in western Thailand with environmental DNA Yap, Wenshu Switzer, Adam D. Gouramanis, Chris Horton, Benjamin Peter Marzinelli, Ezequiel Miguel Wijaya, Winona Yan, Yu Ting Dominey-Howes, Dale Labbate, Maurizio Jankaew, Kruawun Lauro, Federico M. Asian School of the Environment Earth Observatory of Singapore Singapore Centre for Environmental Life Sciences and Engineering (SCELSE) Science::Geology Palaeotsunami Tsunami Geology The identification of tsunami deposits in the geological record remains a challenge because the proxies availabilities are subject to the environment. The proxies may degrade over time and inherently inhibit the robustness of event interpretations. Multi-proxy methods, which leverage on each other's advantage/s and limitation/s, are employed to improve the identification of tsunami deposits from the geological record. Here, we assess the utility of environmental DNA (eDNA) for tsunami research by comparing and contrasting the eDNA collected from a sequence of well-documented palaeotsunami deposits spanning the past three millennia. We study swales in a coastal beach ridge sequences on Phra Thong Island, Thailand and test if eDNA can robustly discriminate the tsunami-deposited sand sheets that intercalate between the non-tsunami derived organic mud layers. Our results indicate that the 2004 Indian Ocean tsunami deposit and preceding tsunami deposits (approximately 550 to 700 years ago) contain microbial communities that differ significantly from the overlying and underlying organic mud layers (p-value = 0.0269) but the signal becomes restricted in the older sediment layers up to 2800-year-old that are constantly submerged in groundwater. This work demonstrates the potential for applying eDNA to study tsunami deposits over centennial time frames and perhaps longer. Ministry of Education (MOE) National Research Foundation (NRF) Published version This work was funded by the National Research Foundation Singapore Fellowship scheme [Grant number NRF-RF2010-04], the Singapore Ministry of Education Academic Research Fund Tier 1 [Grant number RG142/18) and the Singapore Academic Research Fund Tier 3 [Grant number MOE2019-T3-1-004]. This research was also supported by research capacity and infrastructure at the Earth Observatory of Singapore and the Singapore Centre for Environmental Life Science Engineering, Nanyang Technological University Singapore that are both funded by the National Research Foundation Singapore and the Singapore Ministry of Education under the Research Centre of Excellence initiative. 2023-11-08T06:34:11Z 2023-11-08T06:34:11Z 2023 Journal Article Yap, W., Switzer, A. D., Gouramanis, C., Horton, B. P., Marzinelli, E. M., Wijaya, W., Yan, Y. T., Dominey-Howes, D., Labbate, M., Jankaew, K. & Lauro, F. M. (2023). Investigating geological records of tsunamis in western Thailand with environmental DNA. Marine Geology, 457, 106989-. https://dx.doi.org/10.1016/j.margeo.2023.106989 0025-3227 https://hdl.handle.net/10356/171810 10.1016/j.margeo.2023.106989 2-s2.0-85147847279 457 106989 en NRF-RF2010-04 RG142/18 MOE 2019-T3-1-004 Marine Geology © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/). application/pdf |
| spellingShingle | Science::Geology Palaeotsunami Tsunami Geology Yap, Wenshu Switzer, Adam D. Gouramanis, Chris Horton, Benjamin Peter Marzinelli, Ezequiel Miguel Wijaya, Winona Yan, Yu Ting Dominey-Howes, Dale Labbate, Maurizio Jankaew, Kruawun Lauro, Federico M. Investigating geological records of tsunamis in western Thailand with environmental DNA |
| title | Investigating geological records of tsunamis in western Thailand with environmental DNA |
| title_full | Investigating geological records of tsunamis in western Thailand with environmental DNA |
| title_fullStr | Investigating geological records of tsunamis in western Thailand with environmental DNA |
| title_full_unstemmed | Investigating geological records of tsunamis in western Thailand with environmental DNA |
| title_short | Investigating geological records of tsunamis in western Thailand with environmental DNA |
| title_sort | investigating geological records of tsunamis in western thailand with environmental dna |
| topic | Science::Geology Palaeotsunami Tsunami Geology |
| url | https://hdl.handle.net/10356/171810 |
| work_keys_str_mv | AT yapwenshu investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT switzeradamd investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT gouramanischris investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT hortonbenjaminpeter investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT marzinelliezequielmiguel investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT wijayawinona investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT yanyuting investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT domineyhowesdale investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT labbatemaurizio investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT jankaewkruawun investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna AT laurofedericom investigatinggeologicalrecordsoftsunamisinwesternthailandwithenvironmentaldna |