Bulk stable isotopes of carbon and nitrogen in benthic epifauna, infauna and zooplankton collected from the Barents Sea during the Nansen Legacy project 2018-2021

Amanda Ziegler; Bodil Bluhm; Thaise Ricardo de Freitas; Arunima Sen; Èric Jordà-Molina; Silvia Hess; Elisabeth Alve; Paul Renaud; Henning Reiss; Lis Lindal Jørgensen; Emmelie Åström; Raphaëlle Descôteaux

doi:10.21335/nmdc-1921275259

Bulk stable isotopes of carbon and nitrogen in benthic epifauna, infauna and zooplankton collected from the Barents Sea during the Nansen Legacy project 2018-2021

Citation

Ziegler A, Bluhm B, Ricardo de Freitas T, Sen A, Jordà-Molina È, Hess S, Alve E, Renaud P, Reiss H, Jørgensen L L, Åström E, Descôteaux R, Maiorana C (2023). Bulk stable isotopes of carbon and nitrogen in benthic epifauna, infauna and zooplankton collected from the Barents Sea during the Nansen Legacy project 2018-2021. The Nansen Legacy Project. Sampling event dataset https://doi.org/10.21335/nmdc-1921275259 accessed via GBIF.org on 2024-12-14.

Description

This dataset provides bulk stable isotope values of carbon and nitrogen for benthic fauna and some zooplankton collected in the Barents Sea during five sampling campaigns during 2018-2021; August 2018, August 2019, December 2019, March 2021 and May 2021. Benthic epifauna were collected using a Campelen or beam trawl and infauna were collected using a box corer. During the 2018 sampling campaign, zooplankton was also collected using a Harstad trawl. Upon collection, all fauna were sorted and identified to the lowest taxonomic level possible while in cold water. Muscle tissue was sub-sampled from large taxa while small taxa were kept whole. All samples were frozen at -20°C until further analysis. In the laboratory, samples were thawed slightly to allow for sub-sampling as needed, then freeze dried for 48 hours. After freeze drying, samples were ground to a fine powder using a mortar and pestle and approximately 1mg of sample was packed into tin capsules for isotopic and elemental analysis. For taxa containing carbonate (e.g., shells, echinoderms) a sub-sample of the freeze-dried powder was also acidified with 1M hydrochloric acid using a dropwise method until visible dissolution ceased. These sub-samples were then re-dried in an oven and packed into tins for analysis like the non-acidified samples. All samples were analyzed for carbon and nitrogen content and isotope ratios at the CLIPT laboratory at the University of Oslo using the Thermo Fischer Scientific 230 EA IsoLink IRMS system comprised of a DeltaV Advantage Stable Isotope Mass Spectrometer coupled to a Flash Elemental Analyzer. The resulting isotope data are reported in delta notation: δnX (‰) = [(Rsample – Rstandard) / Rstandard ] x 1000 where R is the ratio of heavy:light isotopes of the element X in our sample relative to the reference standards Vienna PeeDee Belemnite (VPDB, carbon, Craig, 1957) and air (nitrogen, Mariotti, 1983). During analysis, internal reference standards L-glutamic acid and glycine were calibrated to the International Atomic Energy Agency standards calcium carbonate (NBS19) and lithium carbonate (LSVEC) to normalize carbon isotope values to the δ13CVPDB-scale as well as to USGS40 and USGS41 to normalize nitrogen isotope values to the δ15NAIR-scale. The carbon and nitrogen content data are reported in weight percent.

Sampling Description

Method steps

Taxonomic Coverages

Geographic Coverages

Ocean > Arctic Ocean > Barents Sea

Bibliographic Citations

Contacts

Amanda Ziegler
originator
position: Postdoctoral fellow
UiT The Arctic University of Norway
Tromsø
NO
email: amanda.f.ziegler@uit.no
homepage: https://en.uit.no/ansatte/person?p_document_id=704089

Bodil Bluhm
originator
position: Professor
UiT The Arctic University of Norway
Tromsø
NO
email: bodil.bluhm@uit.no
homepage: https://en.uit.no/ansatte/person?p_document_id=384289

Thaise Ricardo de Freitas
originator
position: Doctoral Research Fellow
University of Oslo
Oslo
NO
email: t.r.de.freitas@geo.uio.no
homepage: https://www.mn.uio.no/geo/english/people/aca/miljogeo/thaiser/index.html

Arunima Sen
originator
position: Associate Professor
UNIS
Longyearbyen
NO
email: arunimas@unis.no
homepage: https://www.unis.no/staff/arunima-sen/

Èric Jordà-Molina
originator
position: PhD candidate
NORD University
Bodø
NO
email: eric.jorda-molina@nord.no
homepage: https://arctos.uit.no/?page_id=10&cn-entry-slug=eric-molina-1

Silvia Hess
originator
position: Senior Lecturer
University of Oslo
Oslo
NO
email: silvia.hess@geo.uio.no
homepage: https://www.mn.uio.no/geo/english/people/aca/miljogeo/silviahe/index.html

Elisabeth Alve
originator
position: Professor
University of Oslo
Oslo
NO
email: elisabeth.alve@geo.uio.no
homepage: https://www.mn.uio.no/geo/english/people/aca/miljogeo/ealve/index.html

Paul Renaud
originator
position: Associate Professor
UNIS
Longyearbyen
NO
email: paul.renaud@unis.no
homepage: https://www.unis.no/staff/paul-renaud/

Henning Reiss
originator
position: Professor
NORD University
Bodø
NO
email: henning.reiss@nord.no
homepage: https://www.nord.no/en/about/employees/henning-reiss

Lis Lindal Jørgensen
originator
position: Researcher
Institute of Marine Research
NO
email: lis.lindal.joergensen@hi.no
homepage: https://www.hi.no/en/hi/about-us/employees/lis-lindal-jorgensen

Emmelie Åström
originator
position: Postdoc/Alumna
UiT The Arctic University of Norway
Tromsø
NO
email: karin.e.astrom@uit.no
homepage: https://arvenetternansen.com/team/emmelie-astrom/

Raphaëlle Descôteaux
originator
position: Postdoc
UNIS
Longyearbyen
NO
email: raphaelled@unis.no
homepage: https://www.unis.no/staff/raphaelle-descoteaux/

Carolina Maiorana
metadata author
position: Senior Engineer
Institute of Marine Research
Bergen
NO
email: carolina.maiorana@hi.no

Amanda Ziegler
administrative point of contact
position: Postdoctoral fellow
UiT The Arctic University of Norway
Tromsø
NO
email: amanda.f.ziegler@uit.no
homepage: https://en.uit.no/ansatte/person?p_document_id=704089