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dc.contributor.authorMazurkiewicz, Mikołaj
dc.contributor.authorPawłowska, Joanna
dc.contributor.authorBarrenechea Angeles, Inés
dc.contributor.authorGrzelak, Katarzyna
dc.contributor.authorDeja, Kajetan
dc.contributor.authorZaborska, Agata
dc.contributor.authorPawłowski, Jan
dc.contributor.authorWłodarska-Kowalczuk, Maria
dc.date.accessioned2024-05-27T11:31:44Z
dc.date.available2024-05-27T11:31:44Z
dc.date.issued2024-05-11
dc.description.abstractArctic fjords ecosystems are highly dynamic, with organisms exposed to various natural stressors along with productivity clines driven by advection of water masses from shelves. The benthic response to these environmental clines has been extensively studied using traditional, morphology-based approaches mostly focusing on macroinvertebrates. In this study we analyse the effects of glacially mediated disturbance on the biodiversity of benthic macrofauna and meiobenthos (meiofauna and Foraminifera) in a Svalbard fjord by comparing morphology and eDNA metabarcoding. Three genetic markers targeting metazoans (COI), meiofauna (18S V1V2) and Foraminifera (18S 37f) were analyzed. Univariate measures of alpha diversity and multivariate compositional dissimilarities were calculated and tested for similarities in response to environmental gradients using correlation analysis. Our study showed different taxonomic composition of morphological and molecular datasets for both macrofauna and meiobenthos. Some taxonomic groups while abundant in metabarcoding data were almost absent in morphology-based inventory and vice versa. In general, species richness and diversity measures in macrofauna morphological data were higher than in metabarcoding, and similar for the meiofauna. Both methodological approaches showed different patterns of response to the glacially mediated disturbance for the macrofauna and the meiobenthos. Macrofauna showed an evident distinction in taxonomic composition and a dramatic cline in alpha diversity indices between the outer and inner parts of fjord, while the meiobenthos showed a gradual change and more subtle responses to environmental changes along the fjord axis. The two methods can be seen as complementing rather than replacing each other. Morphological approach provides more accurate inventory of larger size species and more reliable quantitative data, while metabarcoding allows identification of inconspicuous taxa that are overlooked in morphology-based studies. As different taxa may show different sensitivities to environmental changes, both methods shall be used to monitor marine biodiversity in Arctic ecosystems and its response to dramatically changing environmental conditionsen_US
dc.identifier.citationMazurkiewicz M, Pawłowska J, Barrenechea Angeles IBA, Grzelak K, Deja K, Zaborska A, Pawłowski J, Włodarska-Kowalczuk M. Sediment DNA metabarcoding and morphology provide complementary insight into macrofauna and meiobenthos response to environmental gradients in an Arctic glacial fjord. Marine Environmental Research. 2024;198en_US
dc.identifier.cristinIDFRIDAID 2270579
dc.identifier.doi10.1016/j.marenvres.2024.106552
dc.identifier.issn0141-1136
dc.identifier.issn1879-0291
dc.identifier.urihttps://hdl.handle.net/10037/33624
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalMarine Environmental Research
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleSediment DNA metabarcoding and morphology provide complementary insight into macrofauna and meiobenthos response to environmental gradients in an Arctic glacial fjorden_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)