The habitatmap_stdized.gpkg file is a processed version of the Natura 2000 habitat map of Flanders (De Saeger et al., 2020; see also De Saeger et al. 2017). It contains all polygons with Natura 2000 habitat types or regional important biotopes (RIB). This file is used as a basis for designing monitoring schemes in Flanders. In the original habitat map, every polygon can consist of maximum 5 different types (habitat (sub)types and regionally important biotopes). This information is stored in the columns HAB1 , HAB2 ,..., HAB5 of the attribute table. The fraction of each type within the polygons is stored in the columns PHAB1 , PHAB2 , ..., PHAB5 . The habitatmap_stdized.gpkg file is a GeoPackage that contains: habitatmap_polygons : a spatial layer with every habitat map polygon that contains a Natura 2000 habitat or RIB type. habitatmap_types : a table with information on the habitat and RIB types (HAB1, HAB2,..., HAB5) that occur within each polygon of habitatmap_polygons. The processing of the ... :