Sea-ice meiofauna biodiversity from the Nansen Legacy cruise Q2 (cruise number: 2021704)

Miriam Marquardt1, Bodil Bluhm1, Rolf Gradinger1, Miriam Marquardt2

1 UiT Arctic University of Norway, Tromsø, Norway; 2 

Corresponding author(s): Miriam Marquardt (miriam.marquardt@uit.no)Bodil Bluhm (bodil.bluhm@uit.no)Rolf Gradinger (rolf.gradinger@uit.no)

Received {date}; Revised {date}; Accepted {date}; Published {date}

Citation: Combination of authors, year of data paper publication (in parentheses), Title, Journal Name, Volume, Issue number (in parentheses), and doi of the data paper.

Resource Citation

Marquardt M, Bluhm B, Gradinger R (2023). Sea-ice meiofauna biodiversity from the Nansen Legacy cruise Q2 (cruise number: 2021704). Version 1.6. The Nansen Legacy Project. Samplingevent dataset. DOI: 10.11582/2023.00082  DOI: 10.11582/2023.00082 

Abstract

The data was collected during the Nansen Legacy seasonal study (Q2, cruise number: 2021704) from 27.04 - 20.05.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the northern Barents Sea from 76N to 82N. 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).

Keywords: Samplingevent, sea-ice protist, sea-ice meiofauna, sympagic, northern Barents Sea, sea ice

Project details

Project title: The Nansen Legacy
Funding: This study was funded by the Research Council of Norway through the project The Nansen Legacy (RCN # 276730).
Study area descriptions/descriptor: Northwestern Barents Sea
https://arvenetternansen.com/the-barents-sea/
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. 

Nansen Legacy goals:
https://arvenetternansen.com/our-goals/

Data published through GBIF: https://ipt.gbif.no/resource?r=symmeio_q2

Taxonomic coverage

General taxonomic coverage description: N/A
Taxonomic ranks
Kingdom: Chromista, Animalia
Phylum: Arthropoda, Foraminifera, Rotifera, Ciliophora
Class: Litostomatea, Spirotrichea, Copepoda, Malacostraca, Eurotatoria, Globothalamea
Order: Rotaliida, Haptorida, Euplotida, Amphipoda, Ploima
Family: Didiniidae, Synchaetidae, Euplotidae, Bolivinitidae, Calliopiidae

Spatial coverage

General spatial coverage: The data was collected during the Nansen Legacy seasonal study (Q2, cruise number: 2021704) from 27.04 - 20.05.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the northern Barents Sea from 76N to 82N.
Coordinates: 79°40'41.52''N and 82°13'38.28''N Latitude; 28°41'47.04''E and 33°37'18.12''E Longitude 

Temporal coverage: May 5, 2021 - May 13, 2021

Natural collections description

Collection name: Sea-ice meiofauna biodiversity Q2
Collection identifier: symmeioQ2
Specimen preservation method: Formalin
Specimen preservation method: Alcohol

Methods

Method step description: 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).
Study extent description: The data was collected during the Nansen Legacy seasonal study (Q2, cruise number: 2021704) from 27.04 - 20.05.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the northern Barents Sea from 76N to 82N. Ice cores were taken at three ice covered station.
Sampling description: 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

Datasets

Dataset description
Object name: Darwin Core Archive Sea-ice meiofauna biodiversity from the Nansen Legacy cruise Q2 (cruise number: 2021704)
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: https://ipt.gbif.no/archive.do?r=symmeio_q2
Publication date of data: 2023-09-21
Language: English
Licences of use: Creative Commons Attribution (CC-BY 4.0) License

Metadata language: English
Date of metadata creation: 2023-08-24
Hierarchy level: Dataset