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Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Westerscheldt estuary, period 2011-2012
Citable as data publication
Aquatic environment and quality group; Flanders research institute for agriculture, fisheries and food (ILVO), Belgium; (2019): Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Westerscheldt estuary, period 2011-2012.

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Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Many ocean ecosystems ar ethought to be heading towards a domiance of gelatinous organisms. However, gelatinous zooplakton has been largely understudied and the absence of quantitative long-term data for the studied area impeded drawing conclusion on the potential increasing densities. This study gives a comprehensive overview of the spatio-temporal distribution patterns of gealtinous zooplankton in terms of diversity and density bewteen March 2011 and February 2012 in the Belgian part of the North Sea and the adjacent Westerschelde estuary, based on monthly and seasonal samples respectively. more

The gelatinous zooplankton samples were collected using a 1m-diameter, 1000µm-mesh CalCOFI plankton net, undulated three times through the water column (sine wave from sea surface to bottom) at a speed of 3 knots. One replicate was taken at each station. In the Belgian part of the North Sea, three stations on a coastal-intermediate-open sea transect were monthly sampled. Additonally, seasonal samples (March, June, September and December) were taken at three stations in the Westerscheldt estuary from the lower over the middle to the upper estuary. Most Ctenophora and Scyphozoa were isolated fro mthe CalCOFI samples on board and immediately identified, counted and measured (oral-aboral length and disch diameter, respectively; mm). The rest of the samples was preserved in a 4% formaldehyde-seawater solution. The fixed samples were further analysed in the laboratory, where the hydromedusae and the remaining small ctenophores and scyphomedusae were isolated, counted and identified to species or higher taxon level.

Biology > Plankton > Zooplankton
Marine/Coastal, Gelatinous zooplankton, ANE, Belgium, Belgian Continental Shelf (BCS), EurOBIS calculated BBOX, Ctenophora, Hydrozoa, Scyphozoa

Geographical coverage
ANE, Belgium, Belgian Continental Shelf (BCS) [Marine Regions]
EurOBIS calculated BBOX Stations
Bounding Box
Coordinates: MinLong: 2,7; MinLat: 51,35 - MaxLong: 4,24; MaxLat: 51,75 [WGS84]

Temporal coverage
March 2011 - February 2012

Taxonomic coverage
Ctenophora [WoRMS]
Hydrozoa [WoRMS]
Scyphozoa [WoRMS]


Abundance of biological entity specified elsewhere per unit volume of the water body [BODC]
Volume of sample from the water body [BODC]

Vlaamse overheid; Beleidsdomein Landbouw en Visserij; Instituut voor landbouw-, visserij en voedingsonderzoek (ILVO), moredata ownerdata providerdata creator

Describing this dataset
Vansteenbrugge, L. et al. (2015). Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Schelde estuary: spatio-temporal distribution patterns and population dynamics. J. Sea Res. 97: 28-39., more

Dataset status: In Progress
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2017-06-30
Information last updated: 2019-11-20
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