Dataset

Northern shrimp (Pandalus borealis) in the Norwegian Deep and Skagerrak, 1984-2017

OBIS-GBIF Norway MeasurementOrFact Open in mapper Explore occurrences

The survey data consist of: 1) one time series from 1984-2002 (October/November) using R/V Michael Sars and the Campelen-trawl; 2) a point estimate for 2003 (October) as R/V Michael Sars was taken out of service and substituted with R/V Håkon Mosby, whose winches at that time were not powerful enough for the Campelen-trawl, resulting in the survey being conducted with the Shrimp trawl 1420; 3) a start of a potential new time series as the survey in both 2004 and 2005 was conducted in May/June with R/V Håkon Mosby using the standard Campelen trawl; and 4) one time series from 2006 until present (January/February), using R/V Håkon Mosby and the Campelen trawl. From 2017 R/V Håkon Mosby has been substituted with R/V Kristine Bonnevie. In 2016, there were technical problems with the survey trawl (unequal wire lengths of the trawl gear) and this year’s data are considered to be non-representative of the stock status.

Citation: Søvik, Guldborg; Thangstad, Trude Hauge (2017): Northern shrimp (Pandalus borealis) in the Norwegian Deep and Skagerrak, 1984-2017

Published: March 21, 2018 at 07:22

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

Guldborg Søvik
Institute of Marine Research

Trude Hauge Thangstad
Institute of Marine Research

Arnfinn Morvik

2,633
occurrence records
574,137
measurements and facts
1
taxa
1
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 2,633
100.0%
maximumDepthInMeters 452
17.2%
minimumDepthInMeters 452
17.2%
occurrenceStatus 2,633
100.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 452
17.2%
DEPTH_EXCEEDS_BATH 10
0.4%

Measurement types

DNA derived data