FEN, DAVID M
see Fen (disambiguation) . Not to be confused with Fenn . For the sense of earth mixed with water · see Mud . Avaste Fen · Estonia. Sedges dominate the landscape. Woody shrubs and trees are sparse. Wicken Fen · 1 ] · [ · 2 ] · It is one of the main types of wetland along with marshes · swamps · and bogs . Bogs and fens · both peat-forming ecosystems · are also known as mires . [ · The unique water chemistry of fens is a result of the ground or surface water input. Typically · groundwater input can be reduced or cut off · making the fen ombrotrophic rather than minerotrophic . In this way · fens can become more acidic and transition to bogs over time. [ · Fens can be found around the world · but the vast majority are located at the mid to high latitudes of the Northern Hemisphere. [ · They are dominated by sedges and mosses · particularly graminoids that may be rarely found elsewhere. [ · 3 ]
SEATTLE, WA 98115
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