Cranesville Swamp Preserve is a preserve situated in

Preston County Preston County is a county located in the U.S. state of West Virginia. As of the 2020 Census, the population was 34,216. Its county seat is Kingwood. The county was formed from Monongalia County in 1818 and named for Virginia Governor James P ...

West Virginia West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geographers classify West Virginia as part of the Southern United States while the ...

and Garrett County,

Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; ...

. It is one of the few remaining

boreal Boreal may refer to: Climatology and geography *Boreal (age), the first climatic phase of the Blytt-Sernander sequence of northern Europe, during the Holocene epoch *Boreal climate, a climate characterized by long winters and short, cool to mild ...

bog A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; a ...

s in the southern United States, unusual in harboring many plants and animals that are normally only seen in more northern

climates Climate is the long-term weather pattern in an area, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteorological ...

History

The Nature Conservancy The Nature Conservancy (TNC) is a global environmental organization headquartered in Arlington, Virginia. it works via affiliates or branches in 79 countries and territories, as well as across every state in the US. Founded in 1951, The Natu ...

purchased the beginning in 1960. In October 1964, the site was designated as one of the first

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 ...

s in the country.

Geology

Cranesville Swamp is situated in a natural bowl, or "

frost pocket Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) ...

," creating a climate that is more consistent with more northerly regions.

Ecology

Flora

Cranesville Swamp's unusual setting allows 19 different

plant communities A plant community is a collection or association of plant species within a designated geographical unit, which forms a relatively uniform patch, distinguishable from neighboring patches of different vegetation types. The components of each plant ...

to flourish, with the most dominant species being, among others,

sphagnum moss ''Sphagnum'' is a genus of approximately 380 accepted species of mosses, commonly known as sphagnum moss, peat moss, also bog moss and quacker moss (although that term is also sometimes used for peat). Accumulations of ''Sphagnum'' can store wa ...

speckled alder ''Alnus incana'', the grey alder or speckled alder, is a species of multi-stemmed, shrubby tree in the birch family, with a wide range across the cooler parts of the Northern Hemisphere. Tolerant of wetter soils, it can slowly spread with runners ...

(Alnus rugosa), various

sedge The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus '' Carex'' ...

s (''Carex folliculata'', and ''C. stricta'') and

grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in law ...

es. Bog species include

round-leaved sundew ''Drosera rotundifolia'', the round-leaved sundew, roundleaf sundew, or common sundew, is a carnivorous species of flowering plant that grows in bogs, marshes and fens. One of the most widespread sundew species, it has a circumboreal distribution ...

(''Drosera rotundifolia'') and narrowleaf gentian ('' Gentiana linearis''). The swamp is also home to the southernmost natural community of American larches.

Fauna

In addition to

black bear Black bear or Blackbear may refer to: Animals * American black bear (''Ursus americanus''), a North American bear species * Asian black bear (''Ursus thibetanus''), an Asian bear species Music * Black Bear (band), a Canadian First Nations grou ...

porcupine Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation. The term covers two families of animals: the Old World porcupines of family Hystricidae, and the New World porcupines of family, Erethiz ...

snowshoe hare The snowshoe hare (''Lepus americanus''), also called the varying hare or snowshoe rabbit, is a species of hare found in North America. It has the name "snowshoe" because of the large size of its hind feet. The animal's feet prevent it from sin ...

and a wide variety of birds, the rare

northern water shrew The American water shrew (''Sorex palustris'') or northern water shrew, is a shrew found in the nearctic faunal region located throughout the mountain ranges of the northern United States and in Canada and Alaska. The organism resides in semi-aq ...

has been documented here. Birders have also noted the

golden-crowned kinglet The golden-crowned kinglet (''Regulus satrapa'') is a very small songbird in the family Regulidae that lives throughout much of North America. Description Adults are olive-gray on the upperparts with white underparts, with thin bills and sho ...

and

Nashville warbler The Nashville warbler (''Leiothlypis ruficapilla'') is a small songbird in the New World warbler family, found in North and Central America. It breeds in parts of the northern and western United States and southern Canada, and migrates to winter ...

, rarely seen in this area.

References

{{authority control Appalachian bogs Bogs of Maryland Bogs of West Virginia Protected areas of Preston County, West Virginia Protected areas of Garrett County, Maryland Nature Conservancy preserves Nature reserves in Maryland Nature reserves in West Virginia National Natural Landmarks in Maryland National Natural Landmarks in West Virginia Landforms of Preston County, West Virginia Landforms of Garrett County, Maryland IUCN Category V