Sphagnum latter being the slowly decaying matter underneath. Dried sphagnum moss is also used in northern Arctic regions as an insulating material. Anaerobic acidic sphagnum bogs have low rates of decay, and hence preserve plant fragments and pollen to allow reconstruction of past environments. They even preserve human bodies for millennia; examples of these preserved specimens are Tollund Man, Haraldskær Woman, Clonycavan Man and Lindow Man. Such bogs can also preserve human hair and clothing, one of the most noteworthy examples being Egtved Girl, Denmark. Because of the acidity of peat, however, bones are dissolved rather than preserved. These bogs have
Abbotts Moss Nature Reserve quaking bog occurs when plants such as "Sphagnum" mosses and cotton grass "Eriophorum" sp. colonise the surface of a waterbody and form a floating mat of vegetation. Locally uncommon plants growing here include common cottongrass "Eriophorum angustifolium", cranberry "Vaccinium oxycoccos", round-leaved sundew "Drosera rotundifolia", crowberry "Empetrum nigrum", hare’s-tail cottongrass "Eriophorum vaginatum", bog rosemary "Andromeda polifolia", white beak-sedge "Rhynchospora alba" and the carnivorous lesser bladderwort "Utricularia minor". Dragonflies include the nationally rare white-faced darter "Leucorrhinia dubia" and the locally uncommon downy emerald "Cordulia aenea" and black darter "Sympetrum danae". Abbotts Moss is one of only two sites in Cheshire where adders