The Finnish Uniform Coordinate System (in Finnish Yhtenäiskoordinaatisto, YKJ) has been used in biological observation mapping since the 1970s. Based on YKJ, Finland is divided in square-shaped areas, the size of which are determined according to the needs of the study. The area division used in national biomonitoring is 10 km x 10 km squares, but in some cases 1 km x 1 km and 100 m x 100 m YKJ squares are also used. This data set includes XY-lines that form square grid in four scales according to Unified Coordinate System (100 m - 100 km), with identifiers describing each square.

The OGC API service of Luomus is a geospatial data interface through which openly available species observation data from the Finnish Museum of Natural History (Luomus) is available as geospatial information. The service provides data that is selected based on its usefulness for authorities. Observations come from several different sources, all managed collectively by Luomus. The use of the service is free of charge and does not require authentication with a username or password.