Planktonic foraminifera data from expedition SAS, Arctic Ocean, 2021

Flor Vermassen, Clare Bird, Tirza Weitkamp, Allison Hsiang, Helen Coxall

This dataset contains measurements of planktonic foraminifera from the water column, collected during the Synoptic Arctic Survey (SAS) expedition to the central Arctic Ocean with the Swedish icebreaker Oden from late July to mid September 2021.

The data was collected using a multinet, which samples discrete intervals of the water column. The dataset contains counts of the sampled species Neogloboquadrina pachyderma and Turborotalia quinqueloba. The dataset also reports the maximum diameter data of living foraminifera.

The morphometric data was generated using automatic extraction of morphometric data from photographs obtained with a microscope. Extraction was done using the software Automorph.

Citation

Flor Vermassen, Clare Bird, Tirza Weitkamp, Allison Hsiang, Helen Coxall (2024) Planktonic foraminifera data from expedition SAS, Arctic Ocean, 2021. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/oden-sas-2021-foraminifera-1

References

Vermassen F, Bird C, Weitkamp TM, Darling KF, Farnelid H, Heuzé C, Hsiang AY, Karam S, Stranne C, Sundbom M, Coxall HK (2024). The distribution and abundance of planktonic foraminifera under summer sea-ice in the Arctic Ocean. Biogeosciences. [Submitted]

Data description

The dataset contains two .csv files:

• count-data-SAS-ODEN21.csv containing the counts of foraminifera species
• maximum-diameter-data-SAS-ODEN21.csv containing the maximum diameter data.

File content

count-data-SAS-ODEN21.csv

1. station Station from which the measurements were taken.
2. latitude Latitude of the sampling station (decimal degrees).
3. longitude Longitude of the sampling station (decimal degrees).
4. depth_interval Depth of sampled water, given as an interval (e.g. 100-50) (m).
5. depth_max The largest value in depth_interval (m).
6. depth_min The smallest value in depth_interval (m).
7. neogloboquadrina_pachyderma_counts Counts of Neogloboquadrina pachyderma.
8. turborotalita_quinqueloba_counts Counts of Turborotalia quinqueloba.

maximum-diameter-data-SAS-ODEN21.csv

1. station Station from which the measurements were taken.
2. latitude Latitude of the sampling station (decimal degrees).
3. longitude Longitude of the sampling station (decimal degrees).
4. depth_interval Depth of sampled water, given as an interval (e.g. 50-100) (m).
5. depth_max The largest value in depth_interval (m).
6. depth_min The smallest value in depth_interval (m).
7. mean Mean maximum diameter of the foraminifera tests (shells) (µm).
8. standard_deviation Standard deviation of maximum diameter of the foraminifera tests (shells) (µm).
9. 25th_percentile The 25th percentile of the maximum diameter of the foraminifera tests (shells) (µm).
10. 75th_percentile The 75th percentile of the maximum diameter of the foraminifera tests (shells) (µm).

Comments

The data were acquired in the summer of 2021 from Swedish icebreaker Oden during the Synoptic Arctic Survey (SAS) 2021 expedition organized by the Swedish Polar Research Secretariat.