Approximately 40 per cent of all Bryophytes are threatened according to IUCN criteria and thus of conservation importance (Red Data Book Vol. Whereas the higher plants are reasonably well studied, for mosses, as well as fungi, the research conducted prior to the update of the Red Data Book, published in 2015, brought new conservation emphasis and resulted in the inclusion of about 215 fungi species into national red lists. Approximately 1,200 animal species are endemic to Bulgaria (790 Bulgarian and 410 Balkan endemics).