The Mantua Bog State Nature Preserve (or Mantua Swamp) is a protected wetland in Mantua Township, Portage County in the U.S. state of Ohio. It was designated a

National Natural Landmark The National Natural Landmarks (NNL) Program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. It is the only national natural areas program that identifies and recognizes the best ...

in 1976 and a state nature preserve in 1990. The national landmark designation encompasses which includes Marsh Wetlands State Nature Preserve, in addition to Mantua Bog State Nature Preserve. The nature preserve includes different types of wetlands including

swamp forest Freshwater swamp forests, or flooded forests, are forests which are inundated with freshwater, either permanently or seasonally. They normally occur along the lower reaches of rivers and around freshwater lakes. Freshwater swamp forests are found ...

, boreal bog, and

cattail ''Typha'' is a genus of about 30 species of monocotyledonous flowering plants in the family Typhaceae. These plants have a variety of common names, in British English as bulrush or reedmace, in American English as reed, cattail, or punks, in ...

marshes. Twenty-four state-listed plants have been identified in the bog including autumn willow ('' Salix serissima''), bunchflower ('' Melanthium virginicum''), and cranberry (''

Vaccinium oxycoccos ''Vaccinium oxycoccos'' is a species of flowering plant in the heath family. It is known as small cranberry, marshberry, bog cranberry, swamp cranberry, or, particularly in Britain, just cranberry. It is widespread throughout the cool temperate ...

''). In 2000, the Ohio Odonata Survey found a breeding population of the brush-tipped emerald dragonfly ('' Somatochlora walshii''), a species not previously known to exist in Ohio. Access is by permit only (from the Division of Natural Areas and Preserves) due to the sensitivity of the wetland.

References

{{authority control Bogs of Ohio National Natural Landmarks in Ohio Ohio State Nature Preserves Protected areas of Portage County, Ohio Landforms of Portage County, Ohio Protected areas established in 1990 1990 establishments in Ohio