-- Name -- habitat aggregation unit -- Definition -- The geometric object derived from reference data (e.g. a geographic grid system) that is used to collect, store and present information on the distribution of habitats within a certain geographic region (e.g. Europe or EU Member state).
-- Definition -- Geographical areas characterised by specific ecological conditions, processes, structure and (life support) functions that physically support the organisms that live there. -- Description -- Includes terrestrial and aquatic areas distinguished by geographical, abiotic and biotic features, whether entirely natural or semi-natural. NOTE Many other attributes may be added to this class when the theme is properly developed as part of Annex III. Currently, only those attributes needed to support the Protected Sites theme in Annex I are included.