What defines a "floodplain wetland"?

A floodplain wetland is defined as a wetland that is located adjacent to rivers and is subject to periodic flooding. These wetlands play a crucial role in the ecosystem by providing natural flood control, as they can absorb excess water during flood events, which helps to reduce the impact on surrounding areas. Additionally, floodplain wetlands are critical for biodiversity, serving as habitats for various species of plants and animals. These areas often have rich nutrient levels due to the regular inundation and sediment deposition during flooding events, enhancing their productivity and ecological value.

In contrast, a wetland located in the middle of oceans would not typically experience the same flooding characteristics associated with floodplains. A permanently dry area prone to occasional rain would not meet the criteria of a wetland, as wetlands are characterized by their saturation with water. Lastly, an isolated wetland with no connection to other water bodies does not fit the definition of a floodplain wetland, as it lacks the direct influence of river systems and their flooding dynamics.