Table 1.

Summary of wetland types discussed in the text.

Type	USFWS 1 classification	Major hydrologic influence	Flooding frequency
Mangrove	Estuarine forested/shrub	ocean tide	daily-seasonal
Tidal salt marsh	Estuarine intertidal emergent	ocean tide	daily-seasonal
Pacific Northwest tidal wetland	Estuarine intertidal emergent	ocean tide	daily-seasonal
Tidal brackish marsh	Estuarine intertidal emergent	tide/surface	daily-seasonal
Tidal freshwater wetland	Palustrine emergent	surface	daily-seasonal
Bottomland swamp	Palustrine emergent/ forested	river, precipitation, ground	semi-permanent
Atlantic white cedar wetland forest	Palustrine emergent/ forested	precipitation, ground	seasonal 2
Riverine riparian floodplain wetland	Palustrine emergent/ forested	river, precipitation,	variable
Wet meadow	Palustrine emergent	ground	seasonal
Wet prairie	Palustrine emergent	ground	permanent, semi-permanent 2
Playa	Palustrine emergent	surface	seasonal
Bog	Palustrine shrub	precipitation/runoff	variable/seasonal 2
Pocosin	Palustrine shrub	ground	semi-permanent 2
Fen	Palustrine shrub	ground	semi-permanent 2
Carolina Bay	Palustrine shrub	precipitation/ground	permanent-seasonal
Pothole	Pond natural	precipitation	variable
Vernal pool	Pond natural	precipitation	seasonal
Mississippi deltaic plain wetlands	Mixed	various	variable
Everglades	Mixed	various	variable
Constructed wetlands	Mixed	-	permanent

¹ U.S. Fish and Wildlife Service; ² Includes saturated surface with or without standing water.