Data from: Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes ...
High Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven exceptional for long-term DNA preservation due to their constantly low temperatur...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2016
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.26h7b https://datadryad.org/stash/dataset/doi:10.5061/dryad.26h7b |
| Summary: | High Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven exceptional for long-term DNA preservation due to their constantly low temperatures. Lake sediments contain DNA paleorecords of the surrounding ecosystems and can be used to retrieve a variety of organismal groups from a single sample. In this study, we analyzed vascular plant, bryophyte, algal (in particular diatom) and copepod DNA retrieved from a sediment core spanning the Holocene, taken from Bliss Lake on the northernmost coast of Greenland. A previous multi-proxy study including microscopic diatom analyses showed that this lake experienced changes between marine and lacustrine conditions. We inferred the same environmental changes from algal DNA preserved in the sediment core. Our DNA record was stratigraphically coherent, with no indication of leaching between layers, and our ... : Bliss_bryo_arcticborealbryo.tagThe unique P6 loop trnL sequences produced by amplification of DNA with the primers bryo_P6F_1* & bryo_P6R as detailed in the associated publication. The data was recovered from DNA preserved in a sediment core spanning the Holocene from Bliss Lake, Peary Land, North Greenland. Taxonomic identification of sequences was inferred using a compilation of quality-checked and curated reference libraries for arctic and boreal species constructed at the Natural History Museum in Oslo (arctic vascular plants: Sønstebø et al. 2010; boreal vascular plants: Willerslev et al. 2014; bryophytes: Soininen et al. 2015). Further details can be found in the ReadMe file.Bliss_bryo_embl113.tagThe unique P6 loop trnL sequences produced by amplification of DNA with the primers bryo_P6F_1* & bryo_P6R as detailed in the associated publication. The data was recovered from DNA preserved in a sediment core spanning the Holocene from Bliss Lake, Peary Land, North Greenland. Taxonomic identification ... |
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