Habitat types under the Habitats Directive
The map of habitat types under the Habitats Directive shows all biotopes which, in the professional opinion of the expert (mapper), correspond to a habitat type under the Habitats Directive, or are to be classed in a complex with an LRT, on the basis of the Manual for the Implementation of the Habitats Directive (Ssymank et al. 1998) or the Catalogue of Natural Habitats and Species of Appendices I and II of the Habitats Directive in Brandenburg (LUA 2002). Habitat types are shown in solid colours, and LRT complexes in coloured cross-hatching. Biotopes which do not fall under the Habitats Directive are shown on this map in off-white (area) or grey (lines and points). Areas for which only secondary data are available are not included on the map.
LRT complexes are biotope types which constitute contexts (“complexes”) together with the actual Habitats Directive habitat types, but which do not exhibit the required quality. The goal is to improve the complexes to the level of habitat types; hence, they are also subject to the goals of the Habitats Directive.
In order to ensure better distinction of the Habitats Directive habitat types, a special colour and marking system has been developed which compiles the biotope type occurrence in Berlin in groups, to each of which a colour marking is assigned in accordance with the legend of the Habitats Directive LRTs. Biotopes classed as part of an LRT complex are shown as cross-hatched areas, dotted lines, or circled points. For area-wide biotopes, the respective LRT code is given in red, permitting each biotope type to be identified.
Data sources on biotope types
For the maps of the Full-Coverage Biotope Type Mapping project to be interpreted, it is indispensable to provide the method of data collection for every single area. The Biotope Type Map data source serves this purpose. It identifies the delimitation and classification of the biotope types as per the Berlin Biotope Type List, listing the primary and secondary data by method of collection. Primary data are collected based on surface and aerial image mapping. Secondary data are recoded data from the Environmental Atlas (Urban Structure), the Green Space, Cemetery and Allotment Garden land registers, and the Map of Bodies of Water (Small Waters).
- Biotope mapping (primary data, surface collection): All forests, Natura 2000 areas, nature and landscape protection areas and valuable conservation areas (outlying areas)
- Biotope types (primary data, aerial image collection): Collected using recent aerial photoggraphy
- Urban structure data from the Berlin Environmental Atlas, recoded to biotope types (secondary data): particularly built-up areas, industrial and commercial areas
- Recoding of existing data from the Green Space, Cemetery and Allotment Garden land registers.
Approx. 38,500 hectares of area of the Berlin Biotope Type Map have been mapped on the basis of primary data, and 50,500 hectares ascertained on the basis of secondary data.
Biotope Types Biotope Values
As expected, those areas shown on the Biotope Values Map as having the highest values (extremely high) depict the legally protected biotopes and the areas certified under the Habitat Directive. Since these are in most cases still relatively near-natural areas in forest, water body and shoreline areas, the vast majority of them are in areas of the boroughs of Charlottenburg-Wilmersdorf, Reinickendorf and Treptow-Köpenick remote from the city centre. Areas with very high or high biotope values are however also present in more heavily used areas, such as Tegel Airport, the Charlottenburg Palace Park, Jungfernheide or Wuhlheide.
By accessing the factual data display for any selected area, the point count for the biotope evaluation, and hence the conflict potential in case of possible change of use, can be ascertained.