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dc.contributor.authorMorard, Raphaël
dc.contributor.authorLejzerowicz, Franck
dc.contributor.authorDarling, Kate F.
dc.contributor.authorLecroq-Bennet, Béatrice
dc.contributor.authorWinther Pedersen, Mikkel
dc.contributor.authorOrlando, Ludovic
dc.contributor.authorPawlowski, Jan
dc.contributor.authorMulitza, Stefan
dc.contributor.authorde Vargas, Colomban
dc.contributor.authorKucera, Michal
dc.identifier.citationMorard , R , Lejzerowicz , F , Darling , K F , Lecroq-Bennet , B , Winther Pedersen , M , Orlando , L , Pawlowski , J , Mulitza , S , de Vargas , C & Kucera , M 2017 , ' Planktonic foraminifera-derived environmental DNA extracted from abyssal sediments preserves patterns of plankton macroecology ' , Biogeosciences , vol. 14 , no. 11 , pp. 2741-2754 .
dc.identifier.otherPURE: 250299021
dc.identifier.otherPURE UUID: 8bb6667f-f47e-4fef-9507-e0303a76a7b1
dc.identifier.otherBibtex: urn:fd8b5c21f59da2af3634328858828258
dc.identifier.otherScopus: 85020289068
dc.identifier.otherWOS: 000402797200001
dc.descriptionThe study was supported by Swiss National Science Foundation grants 31003A-140766 and 313003A-159709 and by the DFG Research Centre/Cluster of Excellence “The Ocean in the Earth System”.en
dc.description.abstractDeep-sea sediments constitute a unique archive of ocean change, fueled by a permanent rain of mineral and organic remains from the surface ocean. Until now, paleo-ecological analyses of this archive have been mostly based on information from taxa leaving fossils. In theory, environmental DNA (eDNA) in the sediment has the potential to provide information on non-fossilized taxa, allowing more comprehensive interpretations of the fossil record. Yet, the process controlling the transport and deposition of eDNA onto the sediment and the extent to which it preserves the features of past oceanic biota remains unknown. Planktonic foraminifera are the ideal taxa to allow an assessment of the eDNA signal modification during deposition because their fossils are well preserved in the sediment and their morphological taxonomy is documented by DNA barcodes. Specifically, we re-analyze foraminiferal-specific metabarcodes from 31 deep-sea sediment samples, which were shown to contain a small fraction of sequences from planktonic foraminifera. We confirm that the largest portion of the metabarcode originates from benthic bottom-dwelling foraminifera, representing the in situ community, but a small portion (< 10 %) of the metabarcodes can be unambiguously assigned to planktonic taxa. These organisms live exclusively in the surface ocean and the recovered barcodes thus represent an allochthonous component deposited with the rain of organic remains from the surface ocean. We take advantage of the planktonic foraminifera portion of the metabarcodes to establish to what extent the structure of the surface ocean biota is preserved in sedimentary eDNA. We show that planktonic foraminifera DNA is preserved in a range of marine sediment types, the composition of the recovered eDNA metabarcode is replicable and that both the similarity structure and the diversity pattern are preserved. Our results suggest that sedimentary eDNA could preserve the ecological structure of the entire pelagic community, including non-fossilized taxa, thus opening new avenues for paleoceanographic and paleoecological studies.
dc.rights© Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License.en
dc.subjectGE Environmental Sciencesen
dc.subjectQH426 Geneticsen
dc.subjectSDG 14 - Life Below Wateren
dc.titlePlanktonic foraminifera-derived environmental DNA extracted from abyssal sediments preserves patterns of plankton macroecologyen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography and Geosciencesen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.description.statusPeer revieweden

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