Dataset

Dutch long term monitoring of phytoplankton in the Dutch Continental Economical Zone of the North Sea (2000-2018)

EurOBIS MeasurementOrFact Open in mapper Explore occurrences

Long term measurements of phytoplankton composition in the Dutch national part of the North Sea. Samples were taken 12 - 24 times per year between 2000 and 2018 and analysed to the level of genus, species, or other taxon group. The dataset has been used for assessment of the marine environment and habitat quality in the scope of the OSPAR Quality Status Reports and the Marine Strategy Framework Directive. Currently, there are known issues concerning the quality of the data caused by changes in analytic procedures and labs. When more information is available, this will be published through EMODnet. The monitoring is directed and the dataset is maintained by Rijkswaterstaat, the executing body of the Dutch Ministery for Infrastructure and Environment. Publication of the dataset has been facilitated by Deltares, The Netherlands.

Citation: Ministery of Infrastructure and Environment, The Netherland; (2018). Dutch long term monitoring of phytoplankton in the Dutch Continental Economical Zone of the North Sea

Published: September 17, 2025 at 09:10

URL: http://ipt.vliz.be/eurobis/resource?r=mwtl_phytoplankton2

Ministerie van Infrastructuur en Waterstaat; Rijkswaterstaat
Ministerie van Infrastructuur en Waterstaat; Rijkswaterstaat

Flanders Marine Institute (VLIZ)
Flanders Marine Institute (VLIZ)

359,181
occurrence records
1,110,908
measurements and facts
544
taxa
358
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 359,181
100.0%
maximumDepthInMeters 359,181
100.0%
minimumDepthInMeters 359,181
100.0%
scientificNameID 1,450
0.4%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 359,181
100.0%
ON_LAND 61,257
17.1%
NO_ACCEPTED_NAME 48,625
13.5%
MARINE_UNSURE 8,488
2.4%
NOT_MARINE 1,535
0.4%
NO_MATCH 1,450
0.4%

Measurement types

DNA derived data