Why are sedges especially common in wetlands?

Sedges are especially common in wetlands because they are highly adapted to these environments and play a critical role in their ecological stability. Their prevalence in such habitats is due to several key factors:

• Ecological Dominance: Sedges are significant, often dominant components of both tropical and temperate wetlands worldwide. They are crucial to primary productivity and the hydrologic cycle, influencing processes like transpiration and runoff.1
• Colonization and Succession: Many sedge species are the first to colonize bare soil in newly created wetlands. In stable, mature wetlands, they are replaced by longer-lived perennial species, demonstrating their versatility across different stages of wetland development.1
• Adaptability: While sedges occupy diverse habitats, the majority prefer sunny, moist-to-wet environments, including marshes, bogs, fens, and lakeshores. Some species are even adapted as emergent or floating mat aquatics.12
• Reproductive Strategies: Sedges often maintain a seedbank in wetland soil, allowing them to rejuvenate under appropriate conditions during cyclic periods of drying, rather than relying solely on external dispersal.1