Mesozooplankton abundance and biomass during Alkor cruise AL544 (WP2 net)


A key goal of the AL544 cruise in September 2020 in the Baltic Sea was to enhance our understanding of environmental and zooplankton (especially gelatinous) population fluctuations along an east-west transect. Vertically integrated mesozooplankton abundance and diversity was obtained from plankton net hauls followed by image analysis. Samples were collected using a Hydrobios standard WP2 net (200µm) vertical from bottom to surface. Samples were scanned using an Epson V750 Pro flatbed scanner at 2400dpi, scanned as one size fraction, split sometimes multiple times. Processed using ZooProcess. Image data are available on and were sorted into taxonomic categories (examples in Using the export file (.tsv) individual biomass was calculated based on object area and taxonomic identity according to Lehette and Hernandez-Leon (2009). Abundance and biomass are then aggregated to concentrations (per volume).

Metadata Access
Creator Hauss, Helena ORCID logo; Jaspers, Cornelia ORCID logo
Publisher PANGAEA
Publication Year 2023
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Resource Type Dataset
Format text/tab-separated-values
Size 4300 data points
Discipline Earth System Research
Spatial Coverage (9.712W, 54.001S, 14.189E, 54.826N); Baltic Sea; The Little Belt
Temporal Coverage Begin 2020-09-05T10:23:00Z
Temporal Coverage End 2020-09-13T08:10:00Z