Vegetation polygons grouped into 16 classes of habitats. Vegetation maps provide a simplified image of the mosaic of vegetation types which constitute the natural plant cover. A vegetation type is a characteristic collection of plant species which will be found on places with similar growth conditions. A vegetation feature in the vegetation map is a continuous area (polygon) with the same attributes assigned according to the classification criteria of vegetation. In addition, each vegetation feature is classified according to main vetetation types (10 classes), habitats (16 classes) and suitability for sheep and cattle grazing. Today there are two mapping systems in Norway: one for detailed mapping at 1: 5000–20.000 and one for more general mapping at 1:20.000–50.000. The data on vegetation types from the detailed system can be combined with data relating to vegetation types in the general system.

Sampling stations where it is registered minimum 50% content of shell sand or shell gravel in the topmost layer of seabed sediments.

Modelled distribution of biotopes for the Troms III and Eggakanten areas to west Finnmark, based on quantitative video observations of oceanic fauna. Geological, morphological and oceanographic variables are used to predict the various biotopes spatial extent.

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.