Securing Biodiversity in Breckland - European Commission

Specific Requirement in a Variety of HabitatsNinety three priority species occur in variety of habitats but with a specific requirement, such as dungand/or carrion (27 species) or detritus (25 species). For those species requiring dung, grazing wouldbe best form of management, for example a total for 56 species required dung most of which areassigned in the grazing guild. However, a number of species require specific dung types, e.g.carnivore or varying types of herbivore dung.Dung in a variety of habitatsPolietes steinii – RDB:ENDiptera – Muscidae (House/Stable Fly)With very few records of this species, it is apparently only known from a handful of locationswhere it has been found in meadows and woodland. However, it appears to have veryspecific process requirements, having only been found in areas of horse grazing as it developsin dung seeming only that of horses.Figure 29. Proportion of species from different taxonomic groups associated with selected guilds.Guild definitions: WBS – wind-blown sand; DIST-GRAZ – disturbance and moderate or intensive grazing; DIST-?GRAZ – disturbance, grazing requirement unknown; NDIST-GRAZ – moderate or intensive grazing, but nodisturbance; InfDIST-LGRAZ – infrequent disturbance and only light grazing; SWARDM – sward mosaics; JUXT –juxtaposition of disturbed bare ground and nectar sources; ECOTONE – structure and moisture ecotones; O-W– open woodland; WOOD – woodland; DEAD/VET – deadwood or veteran trees145