This biome contains a nutrient-rich environment created by falling leaves and trapped organic materials from the large trees, and it provides the ecosystem service of filtering pollutants from water.

Freshwater wetlands are the biome biome that contains an environment rich in nutrients, created by falling leaves and organic materials trapped in large trees, and provides ecosystem service to filter pollutants from water.

Wetlands are sometimes considered ecotones, transition zones between the river or the sea and the terrestrial environment. Although they often have their own species, such as mangrove tree species, or reed, in flooded freshwater areas, they usually harbor species of aquatic animals typical of the surrounding terrestrial ecosystems. In terms of mammals, several species use these ecosystems to feed on the vegetables and fruits that grow there and other small animals, in addition to being places for bathing or watering larger animals. When housing and feeding the local fauna, the diverse migratory species and species of the associated ecosystems, the wetlands are considered places of reproduction, rest, nesting and hibernation.

Due to their biodiversity and easy access, wetlands are important areas for ecotourism, such as the observation of birds and other animals, or even as spas. Many species, mainly of plants, can still be used by man in a sustainable way, thus having a direct economic value.