Wetland ecosystems

Ecosystems whose soil is saturated for long periods seasonally or continuously, including marshes, swamps, and ephemeral ponds. More detailed terms for wetlands can be selected from the FGDC Wetland Classification <http://fgdc.gov/standards/status/sub3_4.html>.
This category is also used for marsh ecosystems, marshland ecosystems, and riparian ecosystems.
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Digital map of surficial geology, wetlands, and deepwater habitats, Coeur d'Alene river valley, Idaho

Details of materials and geologic environments in an area where a long history of mining has enriched stream sediments in silver, lead, zinc, arsenic, antimony and mercury, copper, cadmium, manganese, and iron.