A swamp is a wetland that is forested. Many swamps occur along large rivers, where they are critically dependent upon natural water level fluctuations. Other swamps occur on the shores of large lakes. Some swamps have hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodical inundation. The two main types of swamp are "true" or swamp forests and "transitional" or shrub swamps. The water of a swamp may be fresh water, brackish water or seawater. Some of the world's largest swamps are found along major rivers such as the Amazon, the Mississippi, and the Congo.
Conservationists have worked hard to preserve swamps. For example, the swamps in Northwest Indiana have been preserved as part of the Indiana Dunes.
Conservationists have worked hard to preserve swamps. For example, the swamps in Northwest Indiana have been preserved as part of the Indiana Dunes.
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