CarbonBridge August 2014: Mesozooplankton species composition and abundance


Mesozooplankton was sampled vertically with a Multinet (180 µm mesh size, 0.25 m**2 mouth opening, Hydro-Bios, Kiel, Germany). Hauling speed was 0.5 m/s. Samples were preserved in a solution of 80% seawater and 20% fixation agent (75% formaldehyde buffered with hexamine, 25% anti-bactericide propandiol), resulting in a final concentration of 4% formaline. From the fixed Multinet samples zooplankton was counted and identified to species (most copepods) or to species, genus or family level (other groups). Conspicuous, large zooplankton (> 5 mm, chaetognaths > 10 mm) was identified and enumerated from the entire sample. From the rest of the sample, at least 500 individuals from a minimum of three sub samples (2-5 ml, automatic pipette) were identified, staged and counted. This procedure allows for the analysis of abundance of common species and taxa with 10% precision and at 95% confidence level (Postel et al., 2000, doi:10.1016/B978-012327645-2/50005-0). Copepods of the genus Calanus were identified to species based on their size (Kwasniewski et al., 2003, doi:10.1093/plankt/25.1.1). Specimens other than copepods were measured and sorted into different size categories (< 5, 5-10, and 10-20 mm).

Metadata Access
Creator Halvorsen, Elisabeth; Kwasniewski, Slawomir
Publisher PANGAEA
Contributor The Arctic University of Norway
Publication Year 2017
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 16609 data points
Discipline Earth System Research
Spatial Coverage (3.751W, 79.002S, 15.454E, 80.870N); North Greenland Sea; Arctic Ocean
Temporal Coverage Begin 2014-08-08T01:43:00Z
Temporal Coverage End 2014-08-17T09:18:00Z