Downward vertical flux of protist cells and biomass in the northern Barents Sea during August 2018, Nansen Legacy cruise 2018707 J/C 1-2

Yasemin V. Bodur1, Anna Maria Dąbrowska2, Agnieska Tatarek2, Józef Maria Wiktor2, Lucie Goraguer3, Ulrike Dietrich1, Camilla Svensen1, Marit Reigstad1

1 UiT - the Arctic University of Norway, , Norway; 2 Institute of Oceanology Polish Academy of Sciences, , Poland; 3 Norwegian Polar Institute, , Norway

Corresponding author(s): Yasemin V. Bodur (yasemin.bodur@uit.no)Anna Maria DąbrowskaAgnieska TatarekJózef Maria WiktorLucie GoraguerUlrike DietrichCamilla SvensenMarit Reigstad (marit.reigstad@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.

Abstract

Samples for protist cell and biomass flux were collected with short-term drifting sediment traps between 75° and 85°N in the northern Barents Sea with R/V Kronprins Haakon in August 2018 as part of the Nansen Legacy project (cruise 2018707, JC 1-2). High-density bottom water was collected at the station and filtered (Whatman GF/F 0.7µm), and then filled into the trap cylinders (KC Denmark, aspect ratio >6) prior to their deployment. Afterwards, the sediment traps were deployed with 2 or 4 cylinders at each depth (30, 40, 60, 90, 120, 200m) for a duration between 22 to 25 hours. Depending on the sea ice conditions, the sediment traps were deployed in open water, anchored to a sea ice floe or within an ice lead. Upon retrieval, the content of the cylinders from each depth was pooled and stored at 4°C in dark until further analyses. For protist examination, a subsample of 100ml was transferred to a brown glass bottle and fixed with a mixture of glutaraldehyde-lugol. Protists were identified to the lowest possible taxonomic level in accordance with the World Register of Marine Species (WoRMS) and counted under an inverted light microscope (Nikon Eclipse TE-300 and Ti-S) using the Uthermöhl method (Edler & Elbrächter, 2010; Utermöhl, 1958). Protist carbon biomass flux was calculated from abundances using established geometric relationships for biovolume conversion (Hillebrand et al., 1999) and biovolume-to-carbon conversion factors (Menden-Deuer & Lessard, 2000).

Note: column footprintWKT = ("deployment_latitude deployment_longitude" (always available) , "recovery_latitude recovery_longitude (if available, otherwise NA)"

Keywords: Samplingevent

Project details

Project title: Nansen Legacy project funded by the Research Council of Norway (Grantnr. 276730)

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

Spatial coverage

General spatial coverage: northern Barents Sea
Coordinates: 75°0'0''N and 83°0'0''N Latitude; 20°0'0''E and 40°0'0''E Longitude 

Methods

Method step description: 

Datasets

Dataset description
Object name: Darwin Core Archive Downward vertical flux of protist cells and biomass in the northern Barents Sea during August 2018, Nansen Legacy cruise 2018707 J/C 1-2
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: https://ipt.gbif.no/archive.do?r=nansen_legacy_phytoplankton_cell_and_biomass_flux
Publication date of data: 2023-09-05
Language: English
Licences of use: Creative Commons Attribution (CC-BY 4.0) License

Metadata language: English
Date of metadata creation: 2023-08-10
Hierarchy level: Dataset

References
Edler, Lars, and Malte Elbrächter. “The Utermöhl Method for Quantitative Phytoplankton Analysis.” In Microscopic and Molecular Methods for Quantitative Phytoplankton Analysis, 110:13–20. Unesco Pub., 2010.
Utermöhl, Hans. “Zur Vervollkommnung Der Quantitativen Phytoplankton-Methodik.” SIL Communications, 1953-1996 9 (January 1, 1958). https://doi.org/10.1080/05384680.1958.11904091. 10.1080/05384680.1958.11904091
Hillebrand, Helmut, Claus-Dieter Dürselen, David Kirschtel, Utsa Pollingher, and Tamar Zohary. “Biovolume Calculation for Pelagic and Benthic Microalgae.” Journal of Phycology 35 (1999). https://doi.org/10.1046/j.1529-8817.1999.3520403.x. 10.1046/j.1529-8817.1999.3520403.x
Menden-Deuer, Susanne, and Evelyn J. Lessard. “Carbon to Volume Relationships for Dinoflagellates, Diatoms, and Other Protist Plankton.” Limnology and Oceanography 45 (May 2000). https://doi.org/10.4319/lo.2000.45.3.0569. 10.4319/lo.2000.45.3.0569