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Algorithm for post-clustering curation of DNA amplicon data yields reliable biodiversity estimates

Open access
Frøslev, Tobias Guldberg, Kjøller, Rasmus, Bruun, Hans Henrik, Ejrnæs, Rasmus, Brunbjerg, Ane Kirstine, Pietroni, Carlotta, Hansen, Anders Johannes·2017·Nature Communications

Abstract

DNA metabarcoding is promising for cost-effective biodiversity monitoring, but reliable diversity estimates are difficult to achieve and validate. Here we present and validate a method, called LULU, for removing erroneous molecular operational taxonomic units (OTUs) from community data derived by high-throughput sequencing of amplified marker genes. LULU identifies errors by combining sequence similarity and co-occurrence patterns. To validate the LULU method, we use a unique data set of high quality survey data of vascular plants paired with plant ITS2 metabarcoding data of DNA extracted from soil from 130 sites in Denmark spanning major environmental gradients. OTU tables are produced with several different OTU definition algorithms and subsequently curated with LULU, and validated against field survey data. LULU curation consistently improves α-diversity estimates and other biodiversity metrics, and does not require a sequence reference database; thus, it represents a promising method for reliable biodiversity estimation.

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Metadata

Authors
Frøslev, T. G., Kjøller, R., Bruun, H. H., Ejrnæs, R., Brunbjerg, A. K., Pietroni, C., & Hansen, A. J.
Venue
Nature Communications
Published
2017-10-30
Volume
8
Issue
1
Pages
1188-1188
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2765747110
Cited by
835
References
38
FWCI
28.66
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Algorithm for post-clustering curation of DNA amplicon data yields reliable biodiversity estimates. https://app.cochat.ai/papers/10.1038/s41467-017-01312-x
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Frøslev, T. G., Kjøller, R., Bruun, H. H., Ejrnæs, R., Brunbjerg, A. K., Pietroni, C., & Hansen, A. J. (2017). Algorithm for post-clustering curation of DNA amplicon data yields reliable biodiversity estimates. Nature Communications. https://doi.org/10.1038/s41467-017-01312-x

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