The BioBio indicator system
Farmland biodiversity is determined by habitat, species and genetic diversity. Due to its complexity, biodiversity cannot be measured as such, and it is assumed that no single all-inclusive index for biodiversity can be devised. Ideally, indicators represent biodiversity as a whole AND are sensitive to environmental conditions resulting from e.g. land use and agricultural management practices. Scientific testing and the subsequent stakeholder audit yielded a complementary set of 23 indicators with minimum redundancies within the components of habitat-, species- and genetic (livestock, crops) diversity as well as farm management indicators. Whereas 16 indicators are relevant for all farm types (field crops and horticulture, specialist grazing livestock, mixed crops–livestock, permanent crops), seven apply only to specific farm types.