Wetland in the Haninge municipality of the Stockholm region

Wetland is a distinct ecosystem that is flooded by water, either permanently or seasonally, where oxygen-free processes prevail. The primary factor that distinguishes wetlands from other land forms or water bodies is the characteristic vegetation of aquatic plants, adapted to the unique hydric soil. Wetlands play a number of functions, including water purification, water storage, processing of carbon and other nutrients, stabilization of shorelines, and support of plants and animals. Wetlands are also considered the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal life.

An awkward surface for turfers as it is often difficult to get there without getting wet or in the worst case getting stuck. Zones that include wetlands can usually be taken without having to tread on the wetland itself.