Dataset

imr_zooplankton_north_sea

OBIS-GBIF Norway MeasurementOrFact Open in mapper Explore occurrences

The dataset contains zooplankton species (with lifestage) composition (abundance) from the North Sea and Skagerrak. Samples have been usually preserved in formalin. Be aware of that the specimen Calanus finmarchicus contains both Calanus finmarchicus and Calanus helgolandicus since these two congener species are difficult to separate. Data on species composition are limited. The data are extracted from the IMR zooplankton database that holds North Sea data on species composition (abundance), size fractionated biomass as well as biomass for particular zooplankton groups obtained from standard seasonal transects (Utsira-StartPoint, Feie-Shetland, Hanstholm-Aberdeen, Torungen-Hirtshals) and a regional coverage of the northern North Sea and Skagerrak during April-May.

Citation: Falkenhaug, T. (2014). IMR Zooplankton North Sea. Institute of Marine Research, Norway

Published: October 26, 2020 at 11:52

URL: https://gbif.imr.no/ipt/resource?r=imr_zooplankton_north_sea

Arnfinn Morvik
Institute of Marine Research

Tone Falkenhaug
Institute of Marine Research

18,175
occurrence records
18,146
measurements and facts
176
taxa
78
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 18,175
100.0%
maximumDepthInMeters 29
0.2%
minimumDepthInMeters 29
0.2%
occurrenceStatus 18,175
100.0%

Quality flags

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

Flag Dropped Records
NO_ACCEPTED_NAME 794
4.4%
DEPTH_EXCEEDS_BATH 63
0.3%
NO_DEPTH 29
0.2%
ON_LAND 27
0.1%
MARINE_UNSURE 2
0.0%

Measurement types

DNA derived data