The Palustrine/Terrestrial class is a unique class that includes the ecological group of Wooded Dune and Swale and the wooded dune and swale complex natural community type. Wooded dune and swale complex has characteristics of both wetlands and uplands. The community occurs on a repeated pattern of alternating dunes and swales adjacent to the Great Lakes and supports a mixture of upland and wetland communities. Floodplain forest, wet-mesic flatwoods, and lakeplain oak openings can contain wetland and upland zones. However, floodplain forest and wet-mesic flatwoods fall within the Palustrine class since they tend to be primarily dominated by wetland conditions and species, and lakeplain oak openings falls within the Terrestrial class since it tends to be primarily dominated by upland conditions and species.