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dc.contributor.authorPreckler, Carlos Angulo
dc.contributor.authorTuron, Marta
dc.contributor.authorPræbel, Kim
dc.contributor.authorAvila, Conxita
dc.contributor.authorWangensteen, Owen S.
dc.date.accessioned2023-08-09T09:38:25Z
dc.date.available2023-08-09T09:38:25Z
dc.date.issued2023-05-05
dc.description.abstractAim: We studied molecular eukaryotic biodiversity patterns in shallow hard-bottom Antarctic benthic communities using community DNA metabarcoding. Polar ecosystems are extremely exposed to climate change, and benthic macroinvertebrate communities have demonstrated rapid response to a range of natural and anthropogenic pressures. However, these rich and diverse ecosystems are poorly studied, revealing how little is known about the biodiversity of the Antarctic benthos associated with hard-bottom habitats.<p> <p>Location: West Antarctic Peninsula and South Shetland Islands. <p>Methods: Using data collected in seven localities along the western Antarctic Peninsula, we calculated spatial patterns of alpha and beta diversities. Furthermore, we analysed temporal changes in benthic composition in one location (Deception Island) over 3 years. We calculated the temporal alpha and beta diversities to reveal changes in this community over time. <p>Results: We obtained a final list of 2057 molecular operational taxonomic units. We found significant differences in benthic community composition between localities and among years. Our dataset revealed a total of 10 different kingdom-level lineages and 34 different phyla in the samples. The most diverse phylum was Arthropoda, followed by Bacillariophyta, and Annelida, while the highest relative read abundances belonged to Annelida, Porifera and Echinodermata. Benthic community compositions changed between 2016 and 2018 in Deception Island, and decreasing species richness was the main component of temporal beta diversity. <p>Main Conclusions: Direct sampling methods are required for monitoring these complex communities. Informative biodiversity patterns can be retrieved even though most of the benthic biodiversity found in Antarctic habitats is yet to be taxonomically described and barcoded. Hard-bottom assemblages exhibit high spatial variability and heterogeneity, not related to depth, which represent a huge challenge for largescale studies in the Southern Ocean. Local patchiness and structure within the communities are probably a consequence of a combination of several biotic and abiotic factors (i.e. ice disturbance, food supply and competition).en_US
dc.identifier.citationPreckler, Turon, Præbel, Avila, Wangensteen. Spatio-temporal patterns of eukaryotic biodiversity in shallow hard-bottom communities from the West Antarctic Peninsula revealed by DNA metabarcoding. Diversity and Distributions: A journal of biological invasions and biodiversity. 2023en_US
dc.identifier.cristinIDFRIDAID 2150196
dc.identifier.doi10.1111/ddi.13703
dc.identifier.issn1366-9516
dc.identifier.issn1472-4642
dc.identifier.urihttps://hdl.handle.net/10037/29815
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalDiversity and Distributions: A journal of biological invasions and biodiversity
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 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.titleSpatio-temporal patterns of eukaryotic biodiversity in shallow hard-bottom communities from the West Antarctic Peninsula revealed by DNA metabarcodingen_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)