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Gridded abundance map of the invasive Polychaete Marenzelleria in the Baltic Sea
Flanders Marine Institute (VLIZ); Royal Netherlands Institute for Sea Research (NIOZ); (2014): Gridded abundance map of the invasive Polychaete Marenzelleria in the Baltic Sea; European Marine Observation Data Network (EMODnet) Biology project (, funded by the European Commission’s Directorate - General for Maritime Affairs and Fisheries (DG MARE).

Gearchiveerde data


Gridded abundance map of Polychaete worm Marenzelleria. This animated gridded abundance map shows how the species invaded the Baltic Sea from Danish waters in the 1990s and became abundant throughout the whole region. This animation shows that probably multiple invasions occurred at the same time. The species is part of the Descriptor 2, Non Indigenous Species of the MSFD and is being monitored under HELCOM. The product was developed with DIVA (Data-Interpolating Variational Analysis) and shows the log-transformed abundance. Data was provided by Sweden (SMH - Swedish Agency for Marine and Water Management; Swedish Meteorological and Hydrological Institute (SMHI); (2015): SHARK - Marine soft bottom macrozoobenthos monitoring in Sweden since 1971)), Finland (SYKE) and Denmark (Aarhus University - Josefson, A.; Rytter, D.; Department of Bioscience - AU, Denmark; (2015): Danish benthic marine monitoring data from ODAM).

Biologie > Benthos
Marien/Kust, Interpolated mapping, ANE, Baltic, Marenzelleria Mesnil, 1896

Geografische spreiding
ANE, Baltic [Marine Regions]

Spreiding in de tijd
1987 - 2013

Taxonomic coverage
Marenzelleria Mesnil, 1896 [WoRMS]

Bijdrage door
Koninklijk Nederlands Instituut voor Onderzoek der Zee (NIOZ), meer

Gerelateerde datasets
Bron datasets:
Danish benthic marine monitoring data from ODAM, meer
Finnish Baltic Sea benthic monitoring, POHJE database, meer
SHARK - National zoobenthos monitoring in Sweden since 1971, meer

Dataset status: Afgelopen
Data type: Dataproducten
Data oorsprong: Monitoring: veldonderzoek
Metadatarecord aangemaakt: 2016-10-07
Informatie laatst gewijzigd: 2022-08-09
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