Sampling event

Fatty acids in zooplankton Nansen Legacy Q4

Latest version published by The Nansen Legacy Project on 11 May 2022 The Nansen Legacy Project
Relative proportions of fatty acids in pelagic zooplankton collected during Nansen Legacy cruise Q4 (28 November to 17 December)
Publication date:
11 May 2022
License:
CC-BY-NC 4.0

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 12 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)
    12
  • ExtendedMeasurementOrFact 
    1354
  • Occurrence 
    45

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 12 records in English (47 kB) - Update frequency: unknown
Metadata as an EML file download in English (13 kB)
Metadata as an RTF file download in English (9 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:

Kohlbach D, Wold A, Keck Al-Habahbeh A, Graeve M, Hop H, Assmy P (2022): Fatty acids in zooplankton Nansen Legacy Q4. v1.3. The Nansen Legacy Project. Dataset/Samplingevent. doi: 10.21334/npolar.2022.40c7af2a

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 Non Commercial (CC-BY-NC) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: baa7d7c9-8b9b-4378-91fb-b82522dfbf32.  The Nansen Legacy Project publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Barents Sea; pelagic zooplankton; fatty acids

Contacts

Who created the resource:

Doreen Kohlbach
Postdoctoral Researcher
Norwegian Polar Institute
Tromsø
NO
Anette Wold
Engineer
Norwegian Polar Institute
Tromsø
NO
Amalia Keck Al-Habahbeh
PhD student
UiT The Arctic University of Norway
Tromsø
NO
Martin Graeve
Researcher
Alfred Wegener Institute
Bremerhaven
DE
Haakon Hop
Researcher
Norwegian Polar Institute
Tromsø
NO
Philipp Assmy
Researcher
Norwegian Polar Institute
Tromsø
NO

Who can answer questions about the resource:

Doreen Kohlbach
Postdoctoral Researcher
Norwegian Polar Institute
Tromsø
NO

Who filled in the metadata:

Doreen Kohlbach
Postdoctoral Researcher
Norwegian Polar Institute
Tromsø
NO

Who else was associated with the resource:

Author
Doreen Kohlbach
Postdoctoral Researcher
Norwegian Polar Institute
Tromsø
NO
Author
Anette Wold
Engineer
Norwegian Polar Institute
Tromsø
NO
Author
Amalia Keck Al-Habahbeh
PhD student
UiT The Arctic University of Norway
Tromsø
NO
Author
Martin Graeve
Researcher
Alfred Wegener Institute
Bremerhaven
DE
Author
Haakon Hop
Researcher
Norwegian Polar Institute
Tromsø
NO
Author
Philipp Assmy
Researcher
Norwegian Polar Institute
Tromsø
NO

Geographic Coverage

Nansen Legacy main transect along 34°E in the Northern Barents Sea and adjacent Arctic Basin from 76 to 82°N

Bounding Coordinates South West [-90, -180], North East [90, 180]

Taxonomic Coverage

Copepods, amphipods

Temporal Coverage

Start Date / End Date 2019-11-28 / 2019-12-17

Sampling Methods

Samples of 5 zooplankton taxa including copepods and amphipods were collected at six stations (P1, P4, P5, P6, P7, NLEG3), using MIK nets (1200 μm with 500 μm cod end), Macroplankton trawl (multiple mesh sizes along the net, tapering to 8 mm at its end) and Bongo nets (64 and 180 μm). Samples were sorted into species and stage/size groups onboard the ship and immediately frozen at -80 ºC.

Study Extent Nansen Legacy main transect along 34°E in the Northern Barents Sea and adjacent Arctic Basin from 76 to 82°N

Method step description:

  1. Fatty acids were analysed at the Alfred Wegener Institute, Bremerhaven, Germany. All samples were freeze-dried for at least 24 h prior to lipid extraction (-45 °C, 0.1 mbar). Zooplankton were homogenized mechanically using a Potter-Elvehjem homogenizer. Total lipids were extracted using a modified procedure from Folch et al. (1957) with dichloromethane/methanol (2:1, v/v). The extracted lipids were cleaned with 0.88 % potassium chloride solution and converted into fatty acid methyl esters (FAMEs) and free fatty alcohols derived from wax esters by transesterification in methanol, containing 3 % concentrated sulfuric acid, at 80 °C for 4 h. After a subsequent hexane extraction, the FAMEs and alcohols were separated split-less via gas chromatography. FAMEs were identified via standard mixtures and total lipid content was quantified with an internal standard (23:0) that was added prior to lipid extraction. Folch, J., Lees, M., and Stanley, G.H.S. (1957). A simple method for the isolation and purification of total lipides from animal tissues. J. Biol. Chem. 226(1), 497-509

Bibliographic Citations

  1. Kohlbach D, Schmidt K, Hop H, Wold A, Al-Habahbeh AK, Belt ST, Woll M, Graeve M, Smik L, Atkinson A and Assmy P (2021) Winter Carnivory and Diapause Counteract the Reliance on Ice Algae by Barents Sea Zooplankton. Front. Mar. Sci. 8:640050 doi: 10.3389/fmars.2021.640050