The indicator records the lengths of all smaller watercourses (3 m average width) as linear elements as well as the edge lengths of larger watercourses (6 m average width) and surface waterbodies and relate them to the respective area. This indicator is important in several respects: -from an ecological point of view, since there is a high level of species diversity in the peripheral areas and along the banks. -From an anthropogenic point of view, since a diverse landscape is perceived as attractive. Water body edge lines are classified as particularly important in relevant models. Here only year-round water-bearing and not piped bodies of water are considered. Channels are not taken into account because of their usually strong technical overprint. Further information at http://www.ioer-monitor.de/index.php?id=44&ID_IND=U31DG
