Nansen Legacy Benthic Foraminifera Biodiversity

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Latest version published by UiO Department of Geosciences on Sept 1, 2026 UiO Department of Geosciences
Publication date:
1 September 2026
License:
CC-BY 4.0

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Description

This dataset contains data on benthic foraminiferal species collected during five expeditions between 2018 and 2022 on the continental margin of the northern Barents Sea. Sediment surface samples were taken with a box corer, covering a water depth range of 186 to 3604 m. The generated datasets presented here comprise occurrence and density (individuals per 10 cm-2) records of benthic foraminifera from 61 samples with seasonal resolution.

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How to cite

Researchers should cite this work as follows:

Ricardo de Freitas T, Hess S, Renaud P E, Alve E (2025). Nansen Legacy Benthic Foraminifera Biodiversity. Version 1.0. UiO Department of Geosciences. Metadata dataset. https://ipt.gbif.no/resource?r=aen_dwc_benthic_foraminifera&v=1.0

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is UiO Department of Geosciences. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: b47ce11c-7a67-440d-8a95-7357348a8455.  UiO Department of Geosciences publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Metadata

Contacts

Thaise Ricardo de Freitas
  • Originator ●
  • Point Of Contact
Department of Geosciences - University of Oslo
Oslo
NO
Silvia Hess
  • Originator ●
  • Point Of Contact
Department of Geosciences - University of Oslo
Oslo
NO
Paul E. Renaud
  • Originator ●
  • Point Of Contact
Akvaplan-niva
Elisabeth Alve
  • Principal Investigator
Department of Geosciences - University of Oslo
Oslo
NO

Geographic Coverage

Samples were collected in the northern Barents Sea.

Bounding Coordinates South West [75, 24], North East [83, 34]

Temporal Coverage

Start Date / End Date 2019-08-09 / 2022-03-03

Project Data

No Description available

Title The Nansen Legacy Project
Funding Research Council of Norway (RCN #276730)

The personnel involved in the project:

Thaise Ricardo de Freitas
Silvia Hess
Paul E. Renaud
Elisabeth Alve
  • Principal Investigator

Sampling Methods

Three box cores were deployed at eight sites on R/V Kronprins Haakon, each using a short sediment core (5.5 cm diameter) to subsample benthic foraminifera. All surface sediment samples (0-1 cm) were preserved onboard in a 70% ethanol solution stained with 2 g L-1 rose Bengal.

Study Extent Sediment sampling was performed during five expeditions onboard R/V Kronprins Haakon - August 2019 (Q3), December 2019 (Q4), March 2021 (Q1), and May 2021 (Q2), and February/March 2022 (JC3) between 75-83 °N and 24-34 °E.

Method step description:

  1. The surface sediment (0-1 cm) was washed over a 500 and 63 μm mesh sieve. The 63-500 μm fraction was split using a wet splitter and further subdivided into two fractions: 63-125 μm and 125-500 μm. The rB–stained foraminifera (>63 μm) were wet-picked, identified, and counted under a Nikon SMZ18 stereomicroscope. Individuals were identified to the lowest taxonomic level possible.

Additional Metadata