HabitatEUNISValue

classification of habitat type according to EUNIS database -- Description -- The EUNIS Habitat types classification is a comprehensive pan-European system to facilitate the harmonised description and collection of data across Europe through the use of criteria for habitat identification; it covers all types of habitats from natural to artificial, from terrestrial to freshwater and marine. Habitat type is defined for the purposes of the EUNIS habitat type classification as follows: 'Plant and animal communities as the characterising elements of the biotic environment, together with abiotic factors operating together at a particular scale.' All factors included in the definition are addressed in the descriptive framework of the habitat classification. The scope of the EUNIS classification is limited to level 3 in its hierarchy (level 4 for Marine habitat types). At level 4 (5 for the Marine types) and below, the component units are drawn from other classification systems and combine these in the common framework. A criteria-based key has been developed for all units to level 3 and in addition for salt marshes at level 4. The key takes the form of a sequential series of questions with additional detailed explanatory notes. Depending on the answer chosen, the user is directed to the next question in the series or to a habitat type identified by the parameters. The user may follow the key question by question, or view the criteria for each habitat level in a series of static diagrams. The parameters used to form the framework of the classification may also be used in the search options in the web site. The database includes EUNIS Habitats and Annex I Habitats of the EU Habitats Directive.