Fen

Fen is a type of wetland that is characterized by its waterlogged, peaty soil and rich mineral ions. Fens are typically alkaline or neutral due to the groundwater's high mineral content. They are often covered by grasses, sedges, reeds, and wildflowers, and are home to a diverse range of wildlife.

Characteristics

Fens are distinguished by their water chemistry, which is alkaline or neutral, with high mineral ions. They are fed by mineral-rich groundwater, often from a seepage or spring. The waterlogged conditions prevent the decay of plant material, leading to a buildup of peat.

Flora and Fauna

The plant life in fens includes grasses, sedges, reeds, and a variety of wildflowers. Some common fen plants include the marsh marigold, ragged robin, and various species of orchid. Fens are also home to a diverse range of wildlife, including many species of birds, amphibians, and insects.

Types of Fens

There are several types of fens, including:

• Valley fens - These occur in valley bottoms and are usually fed by small streams.
• Basin fens - These occur in shallow basins or depressions and are often surrounded by woodland.
• Floodplain fens - These occur on floodplains, usually near rivers.

Conservation

Fens are important habitats for many species of wildlife. However, they are threatened by drainage, peat extraction, and pollution. Conservation efforts are focused on protecting existing fens and restoring degraded ones.

See Also

• Wetland
• Bog
• Marsh
• Swamp

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