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. 2014 Dec 19;5:646. doi: 10.3389/fmicb.2014.00646

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Copyright © 2014 Delmont, Hammar, Ducklow, Yager and Post.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Phytoplankton oligotype diversity of 16S-V6 rRNA amplicon sequences obtained for Phaeocystis (left graph) and diatoms (right graph). Surface and deep samples were obtained at sites with dense ice cover at the shelf break (Shelf), inside the Amundsen Sea polynya and in open waters adjacent to the Dotson glacier (Dotson) during a Phaeocystis antarctica bloom in 2010–2011. Panels at top of the graphs denote the relative contribution of a taxon within each dataset; the “★” symbols denote deep (>350 m) samples. Oligotypes detected at low abundance (n < 200) in the dataset were removed from the analysis.