Hiekkapohja
Hiekkapohja is a Finnish term describing a bottom substrate in water bodies where sand is the dominant sediment type. It is commonly used in the context of lakes and coastal areas to indicate a sandy seabed or lakebed rather than mud, silt, or rock.
Sandy bottoms form where wave action, currents, and sediment sorting remove finer particles, leaving sand-sized grains.
Ecologically, sandy bottoms host benthic communities that prefer firm, well-drained substrata. The permeability and aeration of
Human use and management commonly target sandy bottoms for recreation, such as beaches and swimming areas,
Study and mapping of hiekkapohja employ sediment sampling, grab samplers, cores, and sonar-based bathymetry to classify