wetlands

Land that is characterized by an abundance of moisture and that is inundated by surface or ground water often enough to support a prevalence of vegetation typically adapted for life in saturated soil conditions; areas of permanent or intermittent inundation, whether natural or artificial, with water that is static or flowing, fresh, brackish or salt, including areas of marine water not exceeding 6 m at low tide. (Adapted from definition of the Ramsar Convention on Wetlands of International Importance). Engineered wetlands are becoming more frequent and are sometimes called constructed wetlands. In urban areas wetlands are sometimes referred to as the kidney of a city. Several different types of habitats containing water, e.g., marshes, swamps, and bogs. They act as filters for rivers and steams and minimize the effects of flooding by storing water.

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