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

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.

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 82 records.

3 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)
82
ExtendedMeasurementOrFact
5592
Occurrence
750
ResourceRelationship
86

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.

Downloads

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 82 records in English (89 kB) - Update frequency: unknown
Metadata as an EML file	download in English (13 kB)
Metadata as an RTF file	download in English (11 kB)

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:

Amanda Ziegler, Bodil Bluhm, Thaise Ricardo de Freitas, Arunima Sen, Èric Jordà-Molina, Silvia Hess, Elizabeth Alve, Paul Renaud, Henning Reiss, Lis Lindal Jørgensen, Emmelie Åström, Raphaëlle Descôteaux (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 https://doi.org/10.21335/NMDC-1921275259

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: 996da13e-a54b-42ca-a096-d7bf5dfff25b. The Nansen Legacy Project publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.