Peatland patterns and landforms
This chapter describes and explains the intriguing surface patterns of peatlands, from the landscape-scale features down to the striking microtopographic variation in hummocks and hollows. These patterns are strongly related to hydrology, with a distinction made between, for example, ombrogenous peatlands (with rain as the only source of water) and minerogenous (where water has passed through mineral soil). Peatlands are described and classified according to hydromorphology; that is, morphological features that are shaped by the interactions between underlying terrain form, climate, and hydrology. Hydromorphological patterns are described from small features (such as hummocks), via larger mire types (raised bog, patterned fen etc), up to landscape-scale complexes covering many square kilometres. The biological, climatic, and physical factors that create peatland patterns are discussed.
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