Sampling event

Sea-ice meiofauna biodiversity from the Nansen Legacy joint cruise JC2-2 (cruise number: 2021710)

Latest version published by The Nansen Legacy Project on 21 September 2023 The Nansen Legacy Project
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Publication date:
21 September 2023
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CC-BY 4.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 51 records in English (27 KB) - Update frequency: not planned
Metadata as an EML file download in English (17 KB)
Metadata as an RTF file download in English (11 KB)

Description

The data was collected during the Nansen Legacy joint cruise (JC2-2, cruise number: 2021710) from 24.08 - 25.09.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the Arctic Basin from 81N to 87N. The dataset contains abundance and biomass of sea-ice meiofauna (> 20 µm) including large protists such as foraminifers and ciliates and metazoans eggs. Sea-ice meiofauna were identified and counted with stereo microscopy and result are given as Individuals per liter (cells/L) and Individuals per square meter (Ind/m2). Biomass (μg C Ind.-1) was only determined for alive individuals according to carbon contents for ice meiofauna taxa based on literature summarized in Ehrlich et al. (2021, doi: https://doi.org/10.1525/elementa.2020.00169), and carbon values for foraminifers were provided by de Freitas et al. (2021) for benthic species (Bolivinia sp.: 0.00875 μg C Ind.-1; Elphidium sp.: 0.126 μg C Ind.-1, https://doi.org/10.2113/gsjfr.51.4.249) and Anglada-Ortiz et al. (submitted to PiO) for the pelagic species Neogloboquadrina pachyderma (0.0013 μg C Ind.-1).

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 51 records.

2 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

Event (core)
51
ExtendedMeasurementOrFact 
636
Occurrence 
369

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Marquardt M, Bluhm B, Gradinger R (2023). Sea-ice meiofauna biodiversity from the Nansen Legacy joint cruise JC2-2 (cruise number: 2021710). Version 1.7. The Nansen Legacy Project. Samplingevent dataset. DOI: 10.11582/2023.00080

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is The Nansen Legacy Project. 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: 8daf75ea-e1c4-4231-9848-b3ba4928aa4a.  The Nansen Legacy Project publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Samplingevent; sea-ice protist; sea-ice meiofauna; sympagic; northern Barents Sea; sea ice

Contacts

Miriam Marquardt
  • Originator
  • User
  • Point Of Contact
Chief engineer
UiT Arctic University of Norway
Tromsø
NO
Bodil Bluhm
  • Originator
Professor
UiT Arctic University of Norway
Tromsø
NO
Rolf Gradinger
  • Originator
Professor
UiT Arctic University of Norway
Tromsø
NO

Geographic Coverage

The data was collected during the Nansen Legacy joint cruise (JC2-2, cruise number: 2021710) from 24.08 - 25.09.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the Arctic Basin from 81N to 87N.

Bounding Coordinates South West [83.899, -17.57], North East [87.484, 25.411]

Taxonomic Coverage

N/A

Kingdom Chromista, Animalia
Phylum Ciliophora, Xenacoelomorpha
Order Acoela

Temporal Coverage

Start Date / End Date 2021-09-03 / 2021-09-18

Project Data

The Nansen Legacy is a novel and holistic Arctic research project providing integrated scientific knowledge on the rapidly changing marine climate and ecosystem. A new knowledge base is required to facilitate a sustainable management of the northern Barents Sea and adjacent Arctic Basin through the 21st century. The Nansen Legacy unites about 280 researchers, students, and technicians from ten Norwegian research institutions. The research team includes interdisciplinary arctic marine expertise within physical, chemical, and biological oceanography, as well as geologists, modelers and underwater robotic engineers. Jointly we investigate the past, present and future climate and ecosystem of the northern Barents Sea. In total, the project has spent over 350 days at sea between 2018 and 2022, using the new Norwegian research icebreaker ‘Kronprins Haakon’ as main research platform. The ship-based sampling is complemented by the use of underwater robotics, year-round moored observing platforms and satellite-based observations. Complementary model tools are used to integrate field-based observations, and to investigate the dynamics of the physical and biological components of the northern Barents Sea climate and ecosystem at present and in the future. The Nansen Legacy is home to over 70 early career scientists, providing them with a unique collaborative community and supervision across institutions and disciplines. This gives rise to a new generation of holistic thinking Arctic research leaders. The Nansen Legacy runs for seven years (2018–2024), and is funded by the Research Council of Norway and the Norwegian Ministry of Education and Research. They provide 50% of the budget while the participating institutions contribute 50% in-kind. The total budget for the Nansen Legacy project is 740 mill. NOK.

Title The Nansen Legacy
Identifier AeN
Funding This study was funded by the Research Council of Norway through the project The Nansen Legacy (RCN # 276730).
Study Area Description Arctic Basin
Design Description Our study goals were to characterize sea ice related biota including uni- and multicellular heterotrophs over the entire seasonal cycle, along a latitudinal gradient in the northwestern Barents Sea and adjacent seas Nansen Legacy goals: https://arvenetternansen.com/our-goals/

Sampling Methods

At ice covered stations, ice cores were taken for the determination of abundance and biomass of sea-ice meiofauna and protists (lowermost 30 cm). Ice cores were taken from undeformed level ice areas with a KOVACS ice corer (Mark II coring system, diameter 9 cm) and were cut on a cutting board into the following sections, given as distance from the ice-water interface: 0-3 cm (bottom ice layer), 3-10 cm, 10-20 cm, 20-30 cm. All sea-ice core sections were melted in the dark and at 4°C within 24-28 h to and to reduce negative impacts related to osmotic stress 100 ml filtered seawater (< 0.22 µm) was initially added per 1 cm section. More detailed sampling procedure you find in the Nansen Legacy sampling protocol V10 chapter 14: Link: https://septentrio.uit.no/index.php/nansenlegacy/article/view/6684 Citation: The Nansen Legacy (2022). Sampling Protocols: Version 10. The Nansen Legacy Report Series 32/2022. DOI: https://doi.org/10.7557/nlrs.6684

Study Extent The data was collected during the Nansen Legacy joint cruise (JC2-2, cruise number: 2021710) from 24.08 - 25.09.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the Arctic Basin from 81N to 87N. Ice cores were taken at three ice covered station.

Method step description:

  1. Sea-ice meiofauna were identified and counted with stereo microscopy and result are given as Individuals per liter (cells/L) and Individuals per square meter (Ind/m2). Biomass (μg C Ind.-1) was only determined for alive individuals according to carbon contents for ice meiofauna taxa based on literature summarized in Ehrlich et al. (2021, doi: https://doi.org/10.1525/elementa.2020.00169), and carbon values for foraminifers were provided by de Freitas et al. (2021) for benthic species (Bolivinia sp.: 0.00875 μg C Ind.-1; Elphidium sp.: 0.126 μg C Ind.-1, https://doi.org/10.2113/gsjfr.51.4.249) and Anglada-Ortiz et al. (submitted to PiO) for the pelagic species Neogloboquadrina pachyderma (0.0013 μg C Ind.-1).

Collection Data

Collection Name Sea-ice meiofauna biodiversity JC22
Collection Identifier symmeioJC22
Specimen preservation methods Formalin,  Alcohol

Additional Metadata

Alternative Identifiers 8daf75ea-e1c4-4231-9848-b3ba4928aa4a
https://ipt.gbif.no/resource?r=symmeio_jc22