Dataset collating kelp occurrences (presences and absences) from surveys conducted across the Azores archipelago (NE Atlantic) using remotely operated vehicles, drop-down cameras, open and closed-circuit SCUBA diving, and fisheries by-catch information.

The MARBUNN database contains benthos from the seabed in Norwegian coastal and offshore areas covered by the MAREANO project (www.mareano.no).

Data collected with a 2m beamtrawl towed about 200-300m. Dataset contains numbers and combined wet weight of specimen (down to 1 mg) within same species or higher taxonomic unit. Samples are preserved on formalin and then alcohol. After id the material is stored at the Bergen Museum, Bergen, Norway.

Hyperbenthic decanted crustacea collected with Rothlisberg-Piercy sledge, hauls 5-10 min bottomtime. All samples after 2012 are preserved on board in ethanol. Taxa identified as detailed as possible. Specimens kept at Bergen Museum, Bergen, Norway.

Dataset contains species name, their number of specimen and wet-weight for each taxa (0,1 mg). Samples were originally preserved in formaline and later converted to ethanol. After identification samples are stored at Bergen Museum/University of Bergen.

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.

The dataset contains observations of fish collected by IMR in the Barents Sea, Norwegian Sea and North Sea, 2007-2017.

The IMR zooplankton database 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. Data on species composition are limited.

The IMR zooplankton database holds Norwegian Sea data on size fractionated biomass as well as biomass for particular zooplankton groups obtained from standard seasonal transects (Svinøy, Gimsøy and Bjørnøya-vest) and a regional coverage of the Norwegian Sea during spring. Data on species composition (abundance) are limited.

Abundance and distribution of herring larvae are investigated using Gulf III and T-80 plankton samplers on surveys conducted in March/April along the Norwegian coast.