Zooplankton community composition in Svartnes, Balsfjord, Norway in June 2017 and June 2018 (sampled with a WP-2)
Citation
Svensen C, Wiedmann I (2023). Zooplankton community composition in Svartnes, Balsfjord, Norway in June 2017 and June 2018 (sampled with a WP-2). UiT The Arctic University of Norway. Sampling event dataset https://doi.org/10.15468/ss52m7 accessed via GBIF.org on 2024-08-17.Description
In the project MICROSNOW, the zooplankton community composition at station Svartnes in Balsfjorden was investigated in June 2017 and June 2018. Balsfjord is a 57 km long, narrow fjord with a shallow sill (35 m) and the bottom depth at the sampling station Svartnes is 190 m. The zooplankton was collected in vertical hauls of a WP-2 zooplankton net (mesh size 64 µm). The sampling was done in sets, consisting of deep haul (170 - 50 m) and shallow haul (50 m - surface). In 2017, 5 sets of zooplankton hauls were done (two sets on 20 June 2017, three sets on 21 June 2017) to investigate potential changes of the community composition throughout the day. In 2018, only one set (deep + shallow haul) was collected (12 June 2018). Under the projectID "Microsnow_2017_2018_Balsfjord" in GBIF also an additional data set on Microsetella norvegica (developmental stage composition from samples collected with a 30 L GoFlow bottle) is available.Sampling Description
Study Extent
All samples were taken at the same station in Balsfjorden. However, samples were taken in two different years (2017 and 2018).Sampling
The zooplankton community was sampled with a WP-2 type net (Hydrobios Apparatebau GmbH, Altenholz, Germany) in two depth intervals (50-0 m and 170-50 m). Five vertical profiles (at approximately 6 h intervals) were sampled in 2017 to quantify differences in vertical abundance distributions over a 24 h cycle. In 2018, one profile for abundance quantification was sampled during daytime. The net and its cod end had a mesh size of 64 µm and was used with a closing mechanism for stratified sampling. Due to the small mesh-size, the net was hauled vertically at low speed, 0.2-0.3 m s-1. On deck, the content of the cod-end was gently rinsed onto a 64 µm sieve, transferred to 100 mL PVC bottles and preserved with sodium tetraborate buffered formaldehyde in filtered seawater at 4 % final concentration.Method steps
- Zooplankton samples were examined with an Olympus model SZX7 stereomicroscope according to the procedures described in Postel et al. (2000., Biomass and abundance, p. 83-192. In R. Harris, J. Lenz, M. Huntley, P. Wiebe and H. R. Skjoldal (eds.), ICES Zooplankton Methodology Manual. Academic Press.) and Kwasniewski et al. (2010, doi: 10.1016/j.pocean.2010.06.004).
- Zooplankton identification and counting was performed on sub-samples obtained from the whole sample by splitting with a box splitter. From each sample, a sub-sample of at least 500 individuals was examined. The remainder of the sample was screened in its entirety for the presence of individuals of rare species and ephemeral taxa.
Taxonomic Coverages
Geographic Coverages
The samples were collected at station Svartnes, Balsfjorden, Northern Norway (bottom depth 190 m).
Bibliographic Citations
Contacts
Camilla Svensenoriginator
position: Professor
UiT The Arctic University of Norway
Tromsø
NO
email: camilla.svensen@uit.no
userId: https://orcid.org/0000-0001-9577-3935
Ingrid Wiedmann
processor
position: Researcher
UiT The Arctic University of Norway
NO
email: ingrid.wiedmann@uit.no
userId: https://orcid.org/0000-0002-9274-3084
Camilla Svensen
principal investigator
position: Professor
UiT The Arctic University of Norway
Tromsø
NO
email: Camilla.Svensen@uit.no
userId: https://orcid.org/0000-0001-9577-3935
Sławomir Kwaśniewski
processor
position: Professor
Institute of Oceanology Polish Academy of Sciences (IO PAN)
Sopot
PL
userId: https://orcid.org/0000-0003-3104-0761
Mateusz Ormańczyk
processor
position: Researcher
Institute of Oceanology Polish Academy of Sciences (IO PAN)
Sopot
PL
userId: https://orcid.org/0000-0003-2343-6694
Ingrid Wiedmann
metadata author
position: Researcher
UiT The Arctic University of Norway
Tromsø
NO
email: ingrid.wiedmann@uit.no
userId: https://orcid.org/0000-0002-9274-3084
Camilla Svensen
administrative point of contact
position: Professor
UiT The Arctic University of Norway
Tromsø
NO
email: camilla.svensen@uit.no
userId: https://orcid.org/0000-0001-9577-3935