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What Is a Wetland Habitat?

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  • Written By: Marlene Garcia
  • Edited By: Daniel Lindley
  • Last Modified Date: 01 November 2016
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A wetland habitat consists of an area covered by water at least part of the year, which provides an environment for wildlife and plant survival. Wetland habitats describe bogs, marshes, or swamps filled with freshwater, saltwater, or a combination of the two. Water quality and salinity determine the types of plants and animals that inhabit wetlands and the level of nutrients in the soil.

A marsh typically represents shallow areas on the borders of rivers, lakes, or coastal shores where grasses thrive. It may be a primarily saltwater or freshwater marsh, or a mixture of both. Water levels commonly change with the seasons and tidal action. A marsh wetland habitat usually contains reeds and wildflowers in soil with a low mineral content. Turtles, shrimp, and beavers are some examples of wildlife living in this type of wetland habitat.

Swamps refer to slow-moving rivers or streams where water levels are deeper than marshes. Plant species growing in swamps are woody, such as mangroves in salty wetlands and shrubs in freshwater wetland habitats. These areas typically consist of little drainage, with muddy floors. Various types of birds, otters, snakes, and alligators are common wildlife found in swampy wetland habitats.

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Bogs and fens contain freshwater, with rainfall as the main source of moisture. Some bogs exist in low-lying areas where glacial lakes once covered the land. A fen contains high-alkaline soil and might be described as a peat wetland habitat with moss growing on the floor. Usually, few nutrients are found in a bog. Wildlife includes deer that feed on the plants, several species of birds, and a variety of insects.

A wetland habitat provides critical links in the food chain, from alligators to dragonflies. It also serves as a nesting spot for birds and a spawning region for certain species of fish, including trout and salmon. Migratory birds use a wetland to rest, while some small animals find protection from prey in this environment. A wetland habitat might provide a year-round home to otters, bobcats, and other wildlife.

These areas are important to the ecosystem because they reduce flooding by allowing excess water to collect when river levels run high. A wetland habitat also prevents soil erosion because plants hold the dirt and filter out sediment, improving water quality. Along with providing nutrients for fish and wildlife, wetlands serve as recreation areas for bird-watchers and anglers.

Efforts in some regions to restore or preserve wetlands began after these areas were filled or drained to create building sites, roads, farmland, or pastures. The value of a wetland habitat received international recognition as these areas were lost. In some areas, new wetland areas are created to replace destroyed habitats.

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