Wetlands are uniquely productive and valuable ecosystems, and provide a wide range of ecological, social and environmental functions. Though often limited in size, they occur in all corners of Oregon and are among the most biologically productive and species-rich habitats in the state. Coastal salt marshes, pitcher-plant fens, mountain fens, valley bottom vernal pools, wet prairies, spruce swamps, and desert saltgrass flats are a small sampling of the diversity of wetland types in Oregon. Wetlands are habitat for plants, animals, invertebrates, fish, and fungi. They store flood waters, maintain base flows, and recycle nutrients and chemicals while providing opportunities for recreation, education, and aesthetic experiences.