From soilsmatter2011 – Wetlands are found at the intersection of earth/soil and water ecosystems. Because of the complex interactions of land and water, they have unique properties. Despite only occupying 5% of the earth’s surface, wetlands are one of the most productive ecosystems on the planet. Wetlands provide habitat for a variety of distinctive plants and animals. More than a third of threatened and endangered species live in wetlands. Wetlands improve water quality. They help regulate our climate. Wetlands decrease the impact of floods and hurricanes. They provide space for recreational activities like hunting, boating, and birding. (more).