Abstract for F002

Tropical Bog & Fen [does not occur in Canada]
Tourbières et fens de la zone tropicale [absentes du Canada]

In tropical regions of the world, peat-accumulating conditions occur in the cold, wet mountain highlands and in most of the floodplains of the lowlands, where peatlands have a fluctuating water table, with groundwater and surface water movements being common. "True" tropical bogs and fens, however, with sedge or moss peat are relatively rare. Tropical bogs occur in high, rainy regions, on flat to gently sloping, water-soaked ground with nearly impervious clay beneath peat of depths varying from <0.1 to >3 m. They are covered by a mixed vegetation of sedges and grasses, with scattered or clumped growth of dwarfed trees or shrubs.

Source: Faber-Langendoen, D., T. Keeler-Wolf, D. Meidinger, C. Josse, A. Weakley, D. Tart, G. Navarro, B. Hoagland, S. Ponomarenko, J.-P. Saucier, G. Fults, E. Helmer. 2014. Classification and description of world formation types. Part I (Introduction) and Part II (Description of world formations). Hierarchy Revisions Working Group, Federal Geographic Data Committee, FGDC Secretariat, U.S. Geological Survey. Reston, VA, and NatureServe, Arlington, VA.

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