Proposal for a new classification of Norwegian bird communities

Abstract

Cartographic methods for the presentation of zoological data have been much neglected, mainly because there is a lack of classification systems relating to different animal communities. A classification system for bird communities in Norway, based on a hierarchical structure as used by the phytosociologists, is described. Five main communities are proposed at the class level. As an example, the forest community ( Fringilla) is described down to the association level. Indices of preference are formulated for particular bird species in specified vegetation units and communities, together with a general knowledge of avian distribution and ecology. The ‘complete’ system will make it possible to read the corresponding bird community from the vegetation units in a vegetation map and to compare one bird community with another when assessing relative conservation values. The new system is intended to aid planning authorities who need up-to-date biological data for nature conservation and resource legislation.