Acoustic backscatter. Bottom reflectivity mapped with multibeam echosounder, 10 m grid. The strength of the acoustic signal reflected back from the seabed.

Index layer showing the areas where mapping and/or modelling of shell sand is carried out.

The map layer shows areas with detailed sediment maps (grain size).

Distribution of shell sand localities based on modelling. Modelling is based on data collected by NGU, and carried out by NIVA, in the frame of nation program for mapping of biological diversity.

The map layer shows areas with detailed sediment maps (genesis).

The map layer shows the spread of bioclastic sediments consisting of particles formed from the decomposition of mainly calcareous organisms, and may contain all grain sizes from clay to block. The map layer contains no information about the proportion of living and dead organisms.

Modelled biotopes on the TromsII/NordlandVII area. Analyses of species counts from 222 video transects has allowed to identify ten different biotopes in Troms II/ Nordland VII area. Geological, morphological and oceanographic variables have been used for spatial prediction of the distribution of biotopes across area.

Modelled biotopes on the Mid-Norwegian Shelf. Seven biotopes have been identified in the area through the use of multivariate statistics, based on bathymetry, geology and dominating fauna.

Modelled biotopes in the NordlandVI area. MAREANO video data were to determine the biological communities and this information was put together with bathymetry, terrain and geological data to model the overall distribution of biotopes. Nine biotopes have been identified in the area through the use of multivariate statistics.

The map layer presents several thousand points with bottom information (grain size and sediment type) in fjords and coastal areas.