Preliminary internal differentiation of FFH habitat types in FFH areas and StDB assessments

Description

In the context of the designation of FFH areas and the preparation of the standard data sheets on the FFH areas, the I.L.N. Greifswald, on behalf of the Ministry of Environment M-V, developed a preliminary internal differentiation of FFH habitat types in the FFH areas in 2003/2004. “Temporary internal differentiation” is not a systematic on-site mapping of habitat types according to Annex I to the Habitats Directive, but a compilation of technical information from different sources. The mapping of the legally protected biotopes, the biotope and usage type mapping by CIR aerial image analysis, information from the data storage forest and the forest forest map as well as various individual reports were used. The main objective of the creation of the internal differentiation was a sound estimate of the total area size of the habitat types within the respective FFH area. This information was required to fill in the standard data sheets (StDB). The StDB is the official form for transmitting data on the reported FFH areas to the European Commission. The exact location of the areas of habitat types within the Habitats area may well deviate from the ‘provisional internal differentiation’. This is due, on the one hand, to the fact that the underlying sources of information are sometimes over 10 years old. On the other hand, the FFH habitat types were not mapped directly for the information sources used, but units were mapped (e.g. protected biotopes, stocking types, natural space mosaics, biotope and utilisation types, plant societies, vegetation forms) which are not or only partially identical to FFH habitat types, i.e. the FFH habitat types could only be derived approximated. Therefore, it is necessary to examine whether it is sufficiently precise in the specific area and for the specific question before any use of the ‘provisional internal differentiation’. If this is not the case, current habitat type surveys must be carried out on-site. It should also be borne in mind that areas of the Habitats areas that do not have habitat types after the “provisional internal differentiation” also have significance due to the presence of species listed in Annex II and/or as functional complementary areas and/or as buffer areas and are relevant components of the FFH area. Technical note: All areas of a habitat type within an FFH area are grouped into a “multi-part polygon”, which therefore has only one record in the attribute table. This can lead to problems with “geoprocessing”, e.g. when cutting out a sub-area. Therefore, if necessary, a second shapefile ffhlrt04_.* with “single-part polygons” is available. Supplementing the attribute table with information from the standard data sheets (StDB), read out from the Naturad programme (10/2005)

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  • umweltinformationen
  • natur-und-landschaft

Topics

  • ENVI

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