Geographical areas characterised by specific ecological conditions, processes, structure, and (life support) functions that physically support the organisms that live there. Includes terrestrial and aquatic areas distinguished by geographical, abiotic and biotic features, whether entirely natural or semi-natural.
Habitats and Biotopes is a biodiversity theme that deals with habitats and biotopes as areas and their distinct boundaries. Spatial data model provides characterisation of geographical areas being functional for living organisms: biotopes being the spatial environment of a biotic community; habitats being the spatial environment of specific species. To achieve harmonization on local, national and international level, habitat types should refer to the the European Nature Information System habitat classification in the first place, but could also use Habitats Directive 92/43/EEC and Marine Strategy Framework Directive 2008/56/EC as a reference.