Bio-geographical Regions describe areas of relatively homogeneous ecological conditions with common characteristics. The INSPIRE theme Bio-geographical Regions has a strong linkage to other "biodiversity themes”.
The Habitats Directive (EEC/92/43) is the most important guiding document regarding to Bio-geographical Regions, which contains a list of 'bio-geographical regions’ (Article 1.iii). These bio-geographical regions are the basis of a series of seminars evaluating the Natura 2000 network and for reporting on the conservation status of the habitats and species protected by the Directive.
However, the theme was specified in a more generic way to allow for other concepts of BR (e.g. European map of natural vegetation, environmental stratification) to be shared via INSPIRE.