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Updated: Dec 24, 2025
11:37
Simultaneous DNA-RNA Extraction from Coastal Sediments and Quantification of 16S rRNA Genes and Transcripts by Real-time PCR
Published on: June 11, 2016
18.2K
Dead or alive: sediment DNA archives as tools for tracking aquatic evolution and adaptation
Marianne Ellegaard1,2, Martha R J Clokie3, Till Czypionka4
1Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark. mell@kp.dk.
Communications Biology
|April 9, 2020
Summary
Ancient DNA and resurrected dormant organisms offer new ways to study past ecosystems. This combined approach reconstructs food webs and evolutionary changes, improving predictions for future environmental stress.
Area of Science:
- Paleoecology
- Molecular Ecology
- Evolutionary Biology
Background:
- Ancient DNA (aDNA) and dormant organisms are preserved in sediments.
- Standard paleoecology has limitations in reconstructing past ecosystems.
- Understanding past ecosystem dynamics is crucial for predicting future changes.
Purpose of the Study:
- To assess the combined potential of aDNA and resurrected dormant organisms for ecosystem reconstruction.
- To reconstruct past trophic interactions and evolutionary adaptation.
- To provide a holistic view of past ecosystems and predict future responses to environmental stress.
Main Methods:
- Analysis of ancient environmental DNA (eDNA) from sediments.
- Resuscitation and study of long-term dormant organisms from sediments.
- Integration of molecular data with independent evidence of biotic and abiotic factors.
Main Results:
- Demonstrated feasibility of using combined aDNA and resurrected organisms.
- Reconstructed past trophic interactions and evolutionary adaptations.
- Provided a more comprehensive view of past ecosystem dynamics.
Conclusions:
- Combined aDNA and resurrected organism methods offer a powerful approach to paleoecology.
- This integrated method enhances understanding of ecosystem functioning and services.
- Improved prediction of adaptation to environmental stress is possible with these techniques.
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