Supplementary file 1_Taxonomy as an indicator of trophic diversity in microbial eukaryotic

Summer 2026 data from Nares Strait into Baffin Bay characterizes microbial eukaryote assemblages using high-throughput sequencing of the 18S rRNA gene across two size fractions. The dataset, authored by Aurélie Labarre and shared under CC-BY-4.0, tests hypotheses linking trophic strategies to water mass origin. It captures communities from four vertically stacked water masses, dominated by dinoflagellates and heterotrophic lineages.

Use Cases

• Analyze the distribution of phototrophic and mixotrophic lineages based on water mass stratification described in the results.
• Investigate the reservoir of parasitic Syndinales in deep Atlantic waters as suggested by the discussion.
• Study the characteristics and origins of rare microbial eukaryotic taxa based on the methodological focus.
• Model environmental filtering of microbial eukaryote assemblages based on the strong Arctic gradients mentioned in the introduction.

Strengths

• Data is derived from high-throughput sequencing of the 18S rRNA gene V4 region, a standard molecular method.
• Samples are stratified by two size fractions (0.22–3 and 3–50 μm) and four distinct Arctic water masses.
• The dataset includes analysis of both dominant and rare taxa, as indicated in the methods and results.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The approach was limited to DNA as a template, which may capture historic distributions from dead organisms as noted in the discussion.

Provenance

Source

figshare, author Aurélie Labarre.

Collection Method

High-throughput sequencing of the V4 region of the 18S rRNA gene from water samples.

Time Range

Summer (specific year not stated).

Freshness

Last updated 2026-05-08 05:56:50; freshness should be verified.

Geography

Arctic Ocean, specifically from Nares Strait into Baffin Bay.