Bog - A poorly drained area having wet, spongy, acidic ground rich in accumulated plant materials. Bogs frequently surround a body of open water; characteristic flora include sedges (tufted marsh plants with solid stems), heaths (shrubby evergreens), and sphagnum (moss).
Swamp - Seasonally flooded low-lying land with more woody plants than a marsh and better drainage than a bog.
Marsh - An area of soft, wet, low-lying land, characterized by grassy vegetation and often forming a transition zone between water and land. Examples include both freshwater and saltwater marshes.
Estuary - A site, such as the mouth of a river or bay, where fresh water and salt water meet.
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Gene Carl Feldman
(gene@seawifs.gsfc.nasa.gov)
(301) 286-9428
Todd Carlo Viola, JASON Foundation for Education (todd@jason.org)
Revised: 14 Nov 1995