Data Set Thaler et al. 2024 ...

• Main Author: Labarre, Aurelie
• Format: Dataset
• Language: unknown
• Published: figshare 2024
• Subjects: Marine and estuarine ecology incl. marine ichthyology; Sequence analysis; canada basin; Nares strait
• Online Access: https://dx.doi.org/10.6084/m9.figshare.26370664.v1; https://figshare.com/articles/dataset/Data_Set_Thaler_et_al_2024/26370664/1

In the Arctic, the biogeography of marine microeukaryotes is expected to be impacted by changes in local environmental conditions and advective processes. We used amplicon sequencing of the V4 variable region of the 18S rRNA gene in summer pelagic eukaryote communities in the western (Canada Basin) and eastern (Nares Strait) extremes of the Canadian High Arctic to detect and classify sequences of Acantharia, a taxonomically and functionally diverse group of large planktonic protists. Acantharia contribute to food webs in global oceans as predators of smaller microzooplankton, and some clades capture algal cells that allow them to contribute to inorganic carbon fixation as well. However, owing to difficulties preserving their bio-mineralized strontium sulfate (SrSO 4 ) skeletons, little is known about the origin, depth distribution and autecology of these uncultivated clades. Arctic acantharians in our study were dominated by two clades belonging to cyst-forming groups. Their detection in deeper samples near ...