The Interpretation Manual of European Union Habitats - Version EUR15 is a scientific reference document compiled by Carlos Romão (DGXI.D.2) and adopted by the Habitats Committee on 25 April 1996. It provides guidance on interpreting the 164 natural habitat types listed in Annex I of the Habitats Directive. The manual was developed to address classification difficulties and ensure consistent interpretation of habitat types across the EU. It incorporates definitions from the CORINE Biotopes project and includes descriptions of habitat types based on scientific contributions from national experts. The manual was updated to include new information, particularly on distribution and regional sub-types, following the accession of Austria, Finland, and Sweden. The EUR15 version includes detailed descriptions of priority and non-priority habitat types, with a focus on their ecological characteristics, geographical distribution, and associated vegetation. The manual also includes information on biogeographical regions, vegetation levels, and the classification of habitats. It is intended to support the conservation of natural habitats and species of Community interest, as outlined in the Habitats Directive. The manual is a key resource for interpreting the Natura 2000 network and ensuring the effective implementation of the Habitats Directive.The Interpretation Manual of European Union Habitats - Version EUR15 is a scientific reference document compiled by Carlos Romão (DGXI.D.2) and adopted by the Habitats Committee on 25 April 1996. It provides guidance on interpreting the 164 natural habitat types listed in Annex I of the Habitats Directive. The manual was developed to address classification difficulties and ensure consistent interpretation of habitat types across the EU. It incorporates definitions from the CORINE Biotopes project and includes descriptions of habitat types based on scientific contributions from national experts. The manual was updated to include new information, particularly on distribution and regional sub-types, following the accession of Austria, Finland, and Sweden. The EUR15 version includes detailed descriptions of priority and non-priority habitat types, with a focus on their ecological characteristics, geographical distribution, and associated vegetation. The manual also includes information on biogeographical regions, vegetation levels, and the classification of habitats. It is intended to support the conservation of natural habitats and species of Community interest, as outlined in the Habitats Directive. The manual is a key resource for interpreting the Natura 2000 network and ensuring the effective implementation of the Habitats Directive.