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- Human-made wetlands (9)
- Inland wetlands ( - )
- Tp -- Permanent freshwater marshes/pools; ponds (below 8 ha), marshes and swamps on inorganic soils; with emergent vegetation water-logged for at least most of the growing season (1)
- Ts -- Seasonal/intermittent freshwater marshes/pools on inorganic soils; includes sloughs, potholes, seasonally flooded meadows, sedge marshes (2)
- U -- Non-forested peatlands; includes shrub or open bogs, swamps, fens (1)