Wetland aguatic biomes 湿地及水生群落 Freshwater:Freshwater is defined as having a low salt concentration-usually less than 1%,i.e.,ponds and rivers Beautiful Mountain Lake Marine:Marine regions cover about three- fourths of the Earth's surface,i.e.,oceans, coral reefs.珊瑚礁，and estuaries河☐(where freshwater streams or rivers merge with the ocean) Coral Reefs Wetlands:areas of standing water that support aquatic plants,i.e.,marshes, swamps,and bogs(沼泽).-e.g. mangrove forest(红树林) Mangrove Forest13 • Freshwater：Freshwater is defined as having a low salt concentration—usually less than 1%, i.e., ponds and rivers • Marine ：Marine regions cover about three￾fourths of the Earth’s surface, i.e., oceans, coral reefs珊瑚礁, and estuaries 河口(where freshwater streams or rivers merge with the ocean) • Wetlands： areas of standing water that support aquatic plants, i.e., marshes, swamps, and bogs （沼泽）. -e.g. mangrove forest （红树林） Wetland & aquatic biomes Wetland & aquatic biomes 湿地及水生群落 湿地及水生群落 Beautiful Mountain Lake Coral Reefs Mangrove Forest