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Adams, C.I.M.* ; Jeunen, G.J.* ; Cross, H.* ; Taylor, H.R.* ; Bagnaro, A.* ; Currie, K.* ; Hepburn, C.* ; Gemmell, N.J.* ; Urban, L. ; Baltar, F.* ; Stat, M.* ; Bunce, M.* ; Knapp, M.*

Environmental DNA metabarcoding describes biodiversity across marine gradients.

ICES J. Mar. Sci. 80, 953-971 (2023)
Publ. Version/Full Text DOI
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
In response to climate change, biodiversity patterns in the oceans are predicted to shift rapidly, thus increasing the need for efficient monitoring methods. Environmental DNA (eDNA) metabarcoding recently emerged as a potent and cost-effective candidate to answer this challenge. We targeted three molecular markers to determine multicellular metazoan communities from two timepoints across a long-standing transect in the Southern Hemisphere, the Munida Observational Time Series. We detected four community types across the successive water masses—neritic, sub-tropical, frontal, and sub-Antarctic—crossed by the transect, together with important community differences between the two sampling points. From indicator species analysis, we found diversity patterns were mostly driven by planktonic organisms. Mesopelagic communities differed from surface-water communities in the sub-Antarctic water mass, with at-depth communities dominated by single-cellular organisms. We evaluate the ability of eDNA to detect species-compositional changes across surface and depth gradients and lay the foundations for using this technique in multi-trophic environmental monitoring efforts across long time series. We observed community differences across time and space. More intensive sampling will be critical to fully capture diversity across marine gradients, but this multi-trophic method represents an invaluable opportunity to understand shifts in marine biota.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Community Biodiversity ; Edna ; Environmental Dna ; Monitoring ; Munida Transect ; Spatial Heterogeneity ; Temporal Heterogeneity; New-zealand; Sp-nov; Phytoplankton Assemblages; Otago Peninsula; Bacterial Communities; Southland Current; Pseudo-nitzschia; North-atlantic; Surface-water; Fish
ISSN (print) / ISBN 1054-3139
e-ISSN 1095-9289
Journal ICES Journal of Marine Science
Quellenangaben Volume: 80, Issue: 4, Pages: 953-971 Article Number: , Supplement: ,
Publisher Oxford University Press
Publishing Place Great Clarendon St, Oxford Ox2 6dp, England
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Helmholtz Pioneer Campus (HPC)