An interdunal wetland, interdunal pond or dune slack is a water-filled depression between coastal sand dunes. It may be formed either by wind erosion or by dunal encroachment on an existing wetland. [1] The wind erosion process involves wind scooping out sufficient sand to reach the water table, and typically occurs behind the first line of foredunes. [2]
The Indiana Dunes contain interdunal wetlands. [3] Many conservation efforts have been made to preserve parts of the Indiana Dunes. [3] [4] [5]
Because they are typically very shallow, interdunal wetlands warm quickly, and provide an abundant source of invertebrates eaten by many species of shorebirds. [6] Many interdunal wetlands are ephemeral, drying out during periods of low rain or low water.
In the Great Lakes region of North America, interdunal communities are typically mildly calcareous and dominated by rushes, sedges and shrubs. [6] They are tentatively classified as G2, or globally imperiled, under the NatureServe rankings. [1] [6]
A distinction is sometimes made between interdunal and intradunal wetlands such as pannes, which form within a single dune as part of a blowout.
Driftwood is wood that has been washed onto a shore or beach of a sea, lake, or river by the action of winds, tides or waves.
A woodland is, in the broad sense, land covered with trees, or in a narrow sense, synonymous with wood, a low-density forest forming open habitats with plenty of sunlight and limited shade. Some savannas may also be woodlands, such as savanna woodland, where trees and shrubs form a light canopy.
A swamp is a forested wetland. Swamps are considered to be transition zones because both land and water play a role in creating this environment. Swamps vary in size and are located all around the world. The water of a swamp may be fresh water, brackish water, or seawater. Freshwater swamps form along large rivers or lakes where they are critically dependent upon rainwater and seasonal flooding to maintain natural water level fluctuations. Saltwater swamps are found along tropical and subtropical coastlines. Some swamps have hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodic inundation or soil saturation. The two main types of swamp are "true" or swamp forests and "transitional" or shrub swamps. In the boreal regions of Canada, the word swamp is colloquially used for what is more formally termed a bog, fen, or muskeg. Some of the world's largest swamps are found along major rivers such as the Amazon, the Mississippi, and the Congo.
Burns Harbor is a town in Westchester Township, Porter County, Indiana, United States on the shores of Lake Michigan in Northwest Indiana. It is part of the Chicago metropolitan area. The population was 1,156 at the 2010 census. Burns Harbor is located adjacent to the Indiana Dunes, an area that conservationists have fought hard to preserve.
Dune Acres is a town in Westchester Township, Porter County, in the U.S. state of Indiana. The population was 182 at the 2010 census. Dune Acres is located in the duneland of the south shore of Lake Michigan. Many residents of Dune Acres and surrounding communities helped preserve parts of the Indiana Dunes.
Ogden Dunes is a town in Portage Township, Porter County, in the U.S. state of Indiana. It is located on the shore of Lake Michigan, within Indiana Dunes National Park and nearly surrounded by the city of Portage. The population was 1,110 at the 2010 census. It is named for multi-millionaire Francis A. Ogden, who owned the land there before his death in 1914. His main interest in the land where the dunes are was the sand which could be scooped up and sold, with more sand being replenished naturally over time.
Porter is a town in Westchester Township, Porter County, in the U.S. state of Indiana. The population was 4,858 at the 2010 census. Porter is in the Indiana Dunes ecosystem, which played a role in the creation of The Nature Conservancy, and inspired conservation efforts.
Henry Chandler Cowles was an American botanist and ecological pioneer. A professor at the University of Chicago, he studied ecological succession in the Indiana Dunes of Northwest Indiana. This led to efforts to preserve the Indiana Dunes. One of Cowles' students, O. D. Frank continued his research.
Indiana Dunes State Park is an Indiana State Park located in Porter County, Indiana, United States, 47 miles (75.6 km) east of Chicago. The park is bounded by Lake Michigan to the northwest and is surrounded by as well as within the authorized boundaries of Indiana Dunes National Park, a unit of the National Park Service; the NPS owns the water from the ordinary high water mark to 300 feet (91 m) offshore. The 1,530-acre (619.2 ha) Dunes Nature Preserve makes up the bulk of eastern part of the park, and includes most of the park's hiking trails and dune landscape. This was one of the first places Richard Lieber considered when establishing the Indiana State Park system. Like all Indiana state parks, there is a fee for entrance. Indiana Dunes State Park was established in 1925 and designated a National Natural Landmark in 1974.
John Merle Coulter, Ph. D. was an American botanist and educator. In his career in education administration, Coulter is notable for serving as the president of Indiana University and Lake Forest College and the head of the Department of Botany at the University of Chicago.
The Port of Indiana-Burns Harbor is an industrial area, founded in 1965 and located on the Lake Michigan shore of Indiana at the intersection of U.S. Route 12 and Indiana State Road 249. The primary work done in the area is the manufacturing of steel, and the port area is dominated by steel mills. The port is divided between the municipalities of Burns Harbor and Portage.
Pinhook Bog is a unique bog in Indiana that has been designated a National Natural Landmark. It is part of Indiana Dunes National Park, an area that many citizens, scientists, and politicians fought hard to preserve. Its sister bog, Volo Bog, is located nearby. The bog contains a large variety of plants, including insect eating plants, tamarack trees, stands of blueberry bushes, and floating mats of sphagnum moss. Pinhook Bog is about 580 acres (2.3 km2), a quarter of which is a floating mat of sphagnum peat moss. A "moat" separates the bog from the uplands.
Cowles Bog is a 4,000-year-old wetland complex in Indiana Dunes National Park, near Chesterton, Indiana. It is named for Henry Chandler Cowles who did his pioneering work in ecology and ecological succession here. His work brought international attention to the area which led to efforts to preserve the Indiana Dunes. It was designated a National Natural Landmark in 1965. It contains bog, fen, marsh, wet meadow, swamp, and pond habitats.
Diana of the Dunes was the nickname given to Alice Mabel Gray (1881–1925), an American intellectual and counterculture figure, whose life inspired a local legend in Chesterton, Indiana. Gray lived in primitive conditions among the sand dunes of northern Indiana and became interested in the history, ecology, and the need to preserve the area's dunes. Trained in mathematics, astronomy, and classical languages at the University of Chicago in the early 1900s, Gray rejected a wage-earning, urban life in favor a solitary existence at the Indiana Dunes. Gray's unconventional lifestyle fascinated the general public and area news reporters, who gave her the "Diana" moniker. As the Dunes became threatened by encroaching real-estate development, Gray's notoriety and the "Diana" legend brought media attention to the Dunes at an important time when the local community's support was critical in helping to establish the area as a nature preserve that became the Indiana Dunes State Park and later Indiana Dunes National Park.
Portage Township is one of twelve townships in Porter County, Indiana. As of the 2010 census, its population was 47,085. Portage Township was established in 1835.
The Indiana dunes have been a cross road of activity since the glacier receded. Great explorers such as Jacques Marquette and René-Robert Cavelier, Sieur de La Salle traversed this area. As early as 1862, the area was noted for its unique natural resources. At the start of the 20th century, the dunes were a living laboratory for scientist studying plants, animals, and the changes in the land. The first ecologist did his pioneering work here.
Tremont, Indiana, is a ghost town formerly located in what is now the Indiana Dunes State Park and Indiana Dunes National Park in Westchester Township in northern Porter County, Indiana. It was first established in 1833. It was located at the intersection of U.S. Highway 12 and County Road 100 East, near Indiana 49. The community is named for three massive sand dunes that are now contained within the State park. They are Mount Tom, Mount Holden 170 feet (52 m), and Mount Green 160 feet (49 m).
The Indiana Dunes are natural sand dunes occurring at the southern end of Lake Michigan in the American State of Indiana. They are known for their ecological significance. Many conservationists have played a role in preserving parts of the Indiana Dunes. The Hour Glass, a museum in Ogden Dunes, showcases some of the ecological import of the Dunes.
Long Lake is a large interdunal wetland in the Indiana Dunes region of Northwest Indiana. It was originally approximately 8 miles in length, but has been shortened due to development and drainage. It has a surface area of 34 hectares, and a maximum depth of 1.8 meters. There are three small islands, and the total shoreline length is 4.6 kilometers.
Dorothy Richardson Buell (1886–1976) was an American educator and nature preservationist who became the founder and first president of the Save the Dunes Council, a nonprofit group dedicated to preserving the Indiana dunelands along Lake Michigan. Buell led a grassroots effort to save the remaining unspoiled dunes in northwestern Indiana from industrial development. Buell's sixteen-year leadership of the Save the Dunes Council, from 1952 to 1968, preserved thousands of acres of dunelands at the Indiana Dunes National Lakeshore, which she helped to establish in 1966 as an urban park as part of the National Park Service.
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