Swamp

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Image:Florida freshwater swamp usgov image.jpg

A freshwater swamp

This article is about the wetland type (a landform). For other uses of the term "swamp", see swamp (disambiguation).

A swamp is a wetland that features permanent inundation of large areas of land by shallow bodies of water, generally with a substantial number of hummocks, or dry-land protrusions. In the USA, swamps are usually regarded as including a large amount of woody vegetation, but elsewhere this may not necessarily apply, such as in African swamps dominated by papyrus.

By contrast a marsh in the USA is a wetland without woody vegetation, or elsewhere, a wetland without woody vegetation which is shallower and has less open water surface than a swamp. A mire (or quagmire) is a low-lying wetland of deep, soft soil or mud that sinks underfoot.

Swamps are generally characterized by very slow-moving waters, often rich in tannins from decaying vegetation. They are usually associated with adjacent rivers or lakes. In some cases, rivers become swamps for a distance. Swamps are features of areas with very low topographic relief, although they may be surrounded by mountains.

The most famous swamps in the United States are the Everglades, Okefenokee Swamp and the Great Dismal Swamp. The Okefenokee is located in extreme southeastern Georgia and extends slightly into northeastern Florida. The Great Dismal Swamp lies in extreme southeastern Virginia and extreme northeastern North Carolina. Both are National Wildlife Refuges. Another swamp area, Reelfoot Lake of extreme western Tennessee, was created by the New Madrid earthquake of 1812. Caddo Lake, the Great Dismal and Reelfoot are swamps that are centered at large lakes. Swamps are often called bayous in the southeastern United States, especially in the Gulf Coast region.

Swamps are characterized by rich biodiversity and specialized organisms. For instance, southeastern U.S. swamps, such as those mentioned above, feature trees such as the Bald cypress and Water tupelo, which are adapted to growing in standing water, and animals such as the American alligator.

A common species name in biological nomenclature is the Latin palustris, meaning "of the swamp". Examples of this are Quercus palustris (pin oak) and Thelypteris palustris (marsh fern).

Image:CypressSwamp.jpg

Cypress Swamp at Highlands Hammock State Park

1 Heraldry
2 List of major swamps
- 2.1 Africa
- 2.2 Asia
- 2.3 North America
- 2.4 South America
3 See also

Heraldry

A swamp appears in the coat of arms of Gesturi, Italy.

List of major swamps

Africa

Asia

North America

Great Black Swamp, United States
Great Dismal Swamp, United States
Okefenokee Swamp, Georgia/Florida, United States
Reelfoot Lake, United States
Big Cypress National Preserve, Florida, United States
Limberlost, Indiana, United States
Honey Island Swamp, Louisiana, United States
Great Swamp National Wildlife Refuge, New Jersey, United States

Swamp

Contents

Heraldry

List of major swamps

Africa

Asia

North America

South America

See also