This site has nationally rare calcareous fen and moss-rich mire habitats and a rich invertebrate fauna, including 25 species in the Red Data Book of Invertebrates. More than 330 vascular plants have been recorded. It is a nationally important site geologically because the sampling the peat gives a picture of the vegetation over the early Holocene, between 10,000 and 6,500 years ago.[9][10]