The monitoring of species and habitats involves more than the observation of trends in species numbers. Where what particular quality of habitats exists and how the quality develops are also important. As a measure of the attainment of the state and of the changes in species and habitats, five groups of indicators were developed: diversity of habitats and structures; biological quality of habitats and structures; species diversity; quality-indicating species; and quality of biodiversity-promotion areas.
In the interpretation of the indicators, we strive for a spatial resolution according to agricultural hardship zones and the main regions of the Agricultural Environmental Targets, which are also distinguished in the operationalisation of the Agricultural Environmental Targets (AET, Walter et al. 2013).