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47-529: Much of the peninsula is covered with marshland . The pocosin marshlands of the Albemarle-Pamlico peninsula drain into the Alligator River , an important link in the intracoastal waterway . Forty four percent of the peninsula is owned by timber companies, and another twenty one percent of the peninsula is owned by agricultural corporations. This led to a great deal of deforestation on

94-456: A fen (or, on acidic substrates, valley bog), to a carr , as silt or peat accumulates within the lake. Eventually, peat builds up to a level where the land surface is too flat for ground or surface water to reach the center of the wetland. This part, therefore, becomes wholly rain-fed (ombrotrophic), and the resulting acidic conditions allow the development of bog (even if the substrate is non-acidic). The bog continues to form peat, and over time

141-497: A broad definition: Because all bogs have peat, they are a type of peatland. As a peat-producing ecosystem, they are also classified as mires , along with fens. Bogs differ from fens, in that fens receive water and nutrients from mineral-rich surface or groundwater, while bogs receive water and nutrients from precipitation. Because fens are supplied with mineral-rich water, they tend to range from slightly acidic to slightly basic, while bogs are always acidic because precipitation lacks

188-812: A butterfly called the bog copper ( Lycaena epixanthe ). In Ireland, the viviparous lizard , the only known reptile in the country, dwells in bogland. The United Kingdom in its Biodiversity Action Plan establishes bog habitats as a priority for conservation. Russia has a large reserve system in the West Siberian Lowland . The highest protected status occurs in Zapovedniks ( IUCN category IV); Gydansky and Yugansky are two prominent examples. Bogs are fragile ecosystems, and have been deteriorating quickly, as archaeologists and scientists have been recently finding. Bone material found in bogs has had accelerated deterioration from first analyses in

235-581: A different set of organisms. Saltwater marshes are found around the world in mid to high latitudes , wherever there are sections of protected coastline. They are located close enough to the shoreline that the motion of the tides affects them, and, sporadically, they are covered with water. They flourish where the rate of sediment buildup is greater than the rate at which the land level is sinking. Salt marshes are dominated by specially adapted rooted vegetation, primarily salt-tolerant grasses. Salt marshes are most commonly found in lagoons , estuaries , and on

282-522: A freshwater marsh, the ocean tides affect this form of marsh. However, without the stresses of salinity at work in its saltwater counterpart, the diversity of the plants and animals that live in and use freshwater tidal marshes is much higher than in salt marshes. The most severe threats to this form of marsh are the increasing size and pollution of the cities surrounding them. Ranging greatly in size and geographic location, freshwater marshes make up North America's most common form of wetland. They are also

329-576: A habitat for many species of plants, animals, and insects that have adapted to living in flooded conditions or other environments. The plants must be able to survive in wet mud with low oxygen levels. Many of these plants, therefore, have aerenchyma , channels within the stem that allow air to move from the leaves into the rooting zone. Marsh plants also tend to have rhizomes for underground storage and reproduction. Common examples include cattails , sedges , papyrus and sawgrass . Aquatic animals, from fish to salamanders , are generally able to live with

376-512: A habitat free from fish, which eat the eggs and young of amphibians. An example is the endangered gopher frog . Similar temporary ponds occur in other world ecosystems, where they may have local names. However, vernal pool can be applied to all such temporary pool ecosystems. Playa lakes are a form of shallow freshwater marsh in the southern high plains of the United States. Like vernal pools, they are only present at certain times of

423-575: A location in Hyde County , North Carolina is a stub . You can help Misplaced Pages by expanding it . Marshland In ecology , a marsh is a wetland that is dominated by herbaceous plants rather than by woody plants . More in general, the word can be used for any low-lying and seasonally waterlogged terrain. In Europe and in agricultural literature low-lying meadows that require draining and embanked polderlands are also referred to as marshes or marshland. Marshes can often be found at

470-457: A low amount of oxygen in the water. Some can obtain oxygen from the air instead, while others can live indefinitely in conditions of low oxygen. The pH in marshes tends to be neutral to alkaline , as opposed to bogs , where peat accumulates under more acid conditions. Marshes provide habitats for many kinds of invertebrates, fish , amphibians, waterfowl and aquatic mammals. Marshes have extremely high levels of biological production, some of

517-534: A number of governmental and conservation agencies. They can provide habitat for mammals, such as caribou , moose , and beavers , as well as for species of nesting shorebirds, such as Siberian cranes and yellowlegs . Bogs contain species of vulnerable reptilians such as the bog turtle . Bogs even have distinctive insects; English bogs give a home to a yellow fly called the hairy canary fly ( Phaonia jaroschewskii ), and bogs in North America are habitat for

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564-477: A region in the East of England , the embanked marshes are also known as Fens . Some areas have already lost 90% of their wetlands, including marshes. They have been drained to create agricultural land or filled to accommodate urban sprawl . Restoration is returning marshes to the landscape to replace those lost in the past. Restoration can be done on a large scale, such as by allowing rivers to flood naturally in

611-527: A roothold. The result is a narrow, permanently wet habitat. After drying, peat is used as a fuel , and it has been used that way for centuries. More than 20% of home heat in Ireland comes from peat, and it is also used for fuel in Finland, Scotland, Germany, and Russia. Russia is the leading exporter of peat for fuel, at more than 90 million metric tons per year. Ireland's Bord na Móna ("peat board")

658-402: A shallow dome of bog peat develops into a raised bog. The dome is typically a few meters high in the center and is often surrounded by strips of fen or other wetland vegetation at the edges or along streamsides where groundwater can percolate into the wetland. The various types of raised bog may be divided into: In cool climates with consistently high rainfall (on more than c. 235 days a year),

705-481: Is another type of bog found in the forest of the Gulf Coast states in the United States. They are often covered in heath or heather shrubs rooted in the sphagnum moss and peat. The gradual accumulation of decayed plant material in a bog functions as a carbon sink . Bogs occur where the water at the ground surface is acidic and low in nutrients. A bog usually is found at a freshwater soft spongy ground that

752-400: Is made up of decayed plant matter which is known as peat. They are generally found in cooler northern climates and are formed in poorly draining lake basins. In contrast to fens , they derive most of their water from precipitation rather than mineral-rich ground or surface water. Water flowing out of bogs has a characteristic brown colour, which comes from dissolved peat tannins . In general,

799-675: The Haraldskær Woman and Tollund Man in Denmark, and Lindow man found at Lindow Common in England. The Tollund Man was so well preserved that when the body was discovered in 1950, the discoverers thought it was a recent murder victim and researchers were even able to tell the last meal that the Tollund Man ate before he died: porridge and fish. This process happens because of the low oxygen levels of bogs in combination with

846-1318: The Northern Hemisphere . The world's largest wetland is the peat bogs of the Western Siberian Lowlands in Russia , which cover more than a million square kilometres. Large peat bogs also occur in North America, particularly the Hudson Bay Lowland and the Mackenzie River Basin. They are less common in the Southern Hemisphere, with the largest being the Magellanic moorland , comprising some 44,000 square kilometres (17,000 sq mi) in southern South America. Sphagnum bogs were widespread in northern Europe but have often been cleared and drained for agriculture. A paper led by Graeme T. Swindles in 2019 showed that peatlands across Europe have undergone rapid drying in recent centuries owing to human impacts including drainage, peat cutting and burning. A 2014 expedition leaving from Itanga village, Republic of

893-464: The barley used in making Scotch whisky . Once the peat has been extracted it can be difficult to restore the wetland , since peat accumulation is a slow process. More than 90% of the bogs in England have been damaged or destroyed. In 2011 plans for the elimination of peat in gardening products were announced by the UK government. The peat in bogs is an important place for the storage of carbon. If

940-416: The 1940s. This has been found to be from fluctuations in ground water and increase in acidity in lower areas of bogs that is affecting the rich organic material. Many of these areas have been permeated to the lowest levels with oxygen, which dries and cracks layers. There have been some temporary solutions to try and fix these issues, such as adding soil to the tops of threatened areas, yet they do not work in

987-523: The Congo , discovered a peat bog "as big as England " which stretches into neighboring Democratic Republic of Congo . Like all wetlands, it is difficult to rigidly define bogs for a number of reasons, including variations between bogs, the in-between nature of wetlands as an intermediate between terrestrial and aquatic ecosystems, and varying definitions between wetland classification systems. However, there are characteristics common to all bogs that provide

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1034-518: The combination of low nutrient levels and waterlogging. Sphagnum is generally abundant, along with ericaceous shrubs. The shrubs are often evergreen, which may assist in conservation of nutrients. In drier locations, evergreen trees can occur, in which case the bog blends into the surrounding expanses of boreal evergreen forest. Sedges are one of the more common herbaceous species. Carnivorous plants such as sundews ( Drosera ) and pitcher plants (for example Sarracenia purpurea ) have adapted to

1081-400: The deepest part of the valley, and a stream may run through the surface of the bog. Valley bogs may develop in relatively dry and warm climates, but because they rely on ground or surface water, they only occur on acidic substrates. These develop from a lake or flat marshy area, over either non-acidic or acidic substrates. Over centuries there is a progression from open lake, to a marsh, to

1128-558: The dissolved minerals (e.g. calcium , magnesium , carbonate ) that act to buffer the natural acidity of atmospheric carbon dioxide . Geography and geology both impact the hydrology: as groundwater mineral content reflects the bedrock geology, there can be great deal of variability in some common ions (e.g. manganese , iron ) while proximity to coastal areas is associated with higher sulfate and sodium concentrations. There are many highly specialized animals, fungi, and plants associated with bog habitat. Most are capable of tolerating

1175-460: The edges of acidic lakes. The bog vegetation, mostly sphagnum moss anchored by sedges (such as Carex lasiocarpa ), forms a floating mat approximately half a meter thick on the surface of water or above very wet peat. White spruce ( Picea glauca ) may grow in this bog regime. Walking on the surface causes it to move – larger movements may cause visible ripples on the surface, or they may even make trees sway. The bog mat may eventually spread across

1222-1052: The edges of lakes and streams, where they form a transition between the aquatic and terrestrial ecosystems . They are often dominated by grasses , rushes or reeds. If woody plants are present they tend to be low-growing shrubs, and the marsh is sometimes called a carr . This form of vegetation is what differentiates marshes from other types of wetland such as swamps , which are dominated by trees , and mires , which are wetlands that have accumulated deposits of acidic peat . Marshes provide habitats for many kinds of invertebrates , fish , amphibians , waterfowl and aquatic mammals . This biological productivity means that marshes contain 0.1% of global sequestered terrestrial carbon . Moreover, they have an outsized influence on climate resilience of coastal areas and waterways, absorbing high tides and other water changes due to extreme weather . Though some marshes are expected to migrate upland, most natural marshlands will be threatened by sea level rise and associated erosion . Marshes provide

1269-641: The fringes of large rivers. The different types are produced by factors such as water level, nutrients, ice scour , and waves. Large tracts of tidal marsh have been embanked and artificially drained. They are usually known by the Dutch name of polders . In Northern Germany and Scandinavia they are called Marschland , Marsch or marsk ; in France marais maritime . In the Netherlands and Belgium, they are designated as marine clay districts. In East Anglia ,

1316-553: The global average. Because bogs and other peatlands are carbon sinks, they are releasing large amounts of greenhouse gases as they warm up. These changes have resulted in a severe decline of biodiversity and species populations of peatlands throughout Northern Europe. Bog habitats may develop in various situations, depending on the climate and topography. Bogs may be classified on their topography, proximity to water, method of recharge, and nutrient accumulation. These develop in gently sloping valleys or hollows. A layer of peat fills

1363-421: The ground surface may remain waterlogged for much of the time, providing conditions for the development of bog vegetation . In these circumstances, bog develops as a layer "blanketing" much of the land, including hilltops and slopes. Although a blanket bog is more common on acidic substrates, under some conditions it may also develop on neutral or even alkaline ones, if abundant acidic rainwater predominates over

1410-469: The groundwater. A blanket bog can occur in drier or warmer climates, because under those conditions hilltops and sloping ground dry out too often for peat to form – in intermediate climates a blanket bog may be limited to areas which are shaded from direct sunshine. In periglacial climates a patterned form of blanket bog may occur, known as a string bog . In Europe, these mostly very thin peat layers without significant surface structures are distributed over

1457-840: The headwaters of large rivers. Even the enormous Yangtze River arises in the Ruoergai peatland near its headwaters in Tibet . Blueberries , cranberries , cloudberries , huckleberries , and lingonberries are harvested from the wild in bogs. Bog oak , wood that has been partially preserved by bogs, has been used in the manufacture of furniture . Sphagnum bogs are also used for outdoor recreation, with activities including ecotourism and hunting. For example, many popular canoe routes in northern Canada include areas of peatland. Some other activities, such as all-terrain vehicle use, are especially damaging to bogs. The anaerobic environment and presence of tannic acids within bogs can result in

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1504-447: The highest in the world, and therefore are important in supporting fisheries. Marshes also improve water quality by acting as a sink to filter pollutants and sediment from the water that flows through them. Marshes partake in water purification by providing nutrient and pollution consumption. Marshes (and other wetlands) are able to absorb water during periods of heavy rainfall and slowly release it into waterways and therefore reduce

1551-521: The hills and valleys of Ireland, Scotland, England, and Norway. In North America, blanket bogs occur predominantly in Canada east of Hudson Bay . These bogs are often still under the influence of mineral soil water (groundwater). Blanket bogs do not occur north of the 65th latitude in the northern hemisphere. A quaking bog , schwingmoor , or swingmoor is a form of floating bog occurring in wetter parts of valley bogs and raised bogs and sometimes around

1598-497: The long-term. Extreme weather like dry summers are likely the cause, as they lower precipitation and the groundwater table. It is speculated that these issues will only increase with a rise in global temperature and climate change. Since bogs take thousands of years to form and create the rich peat that is used as a resource, once they are gone they are extremely hard to recover. Arctic and sub-Arctic circles where many bogs are warming at 0.6 °C per decade, an amount twice as large as

1645-526: The low fertility and cool climate result in relatively slow plant growth, but decay is even slower due to low oxygen levels in saturated bog soils. Hence, peat accumulates. Large areas of the landscape can be covered many meters deep in peat. Bogs have distinctive assemblages of animal, fungal, and plant species, and are of high importance for biodiversity , particularly in landscapes that are otherwise settled and farmed. Bogs are widely distributed in cold, temperate climes , mostly in boreal ecosystems in

1692-408: The low-nutrient conditions by using invertebrates as a nutrient source. Orchids have adapted to these conditions through the use of mycorrhizal fungi to extract nutrients. Some shrubs such as Myrica gale (bog myrtle) have root nodules in which nitrogen fixation occurs, thereby providing another supplemental source of nitrogen. Bogs are recognized as a significant/specific habitat type by

1739-469: The magnitude of flooding. Marshes also provide the services of tourism, recreation, education, and research. Marshes differ depending mainly on their location and salinity . These factors greatly influence the range and scope of animal and plant life that can survive and reproduce in these environments. The three main types of marsh are salt marshes , freshwater tidal marshes , and freshwater marshes . These three can be found worldwide, and each contains

1786-423: The most diverse of the three types of marsh. Some examples of freshwater marsh types in North America are: Wet meadows occur in shallow lake basins, low-lying depressions, and the land between shallow marshes and upland areas. They also happen on the edges of large lakes and rivers. Wet meadows often have very high plant diversity and high densities of buried seeds. They are regularly flooded but are often dry in

1833-475: The peat decays, carbon dioxide would be released to the atmosphere, contributing to global warming. Undisturbed, bogs function as a carbon sink . As one example, the peatlands of the former Soviet Union were calculated to be removing 52 Tg of carbon per year from the atmosphere. Therefore, the rewetting of drained peatlands may be one of the most cost-effective ways to mitigate climate change. Peat bogs are also important in storing fresh water, particularly in

1880-453: The peninsula in the 1980s, to the extent that only one third of the peninsula's pocosin marshlands continue to exist in their unaltered form. Soybeans, corn, pines, cattle, and hogs were all raised on the peninsula. Many of the larger farms have gone bankrupt, but some pine farms continue to exist on the peninsula. 35°43′34″N 76°01′52″W  /  35.726°N 76.031°W  / 35.726; -76.031 This article about

1927-613: The remarkable preservation of organic material. Finds of such material have been made in Slovenia , Denmark , Germany , Ireland , Russia , and the United Kingdom. Some bogs have preserved bog-wood, such as ancient oak logs useful in dendrochronology . They have yielded extremely well-preserved bog bodies , with hair, organs, and skin intact, buried there thousands of years ago after apparent Germanic and Celtic human sacrifice . Excellent examples of such human specimens include

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1974-463: The sheltered side of a shingle or sandspit . The currents there carry the fine particles around to the quiet side of the spit, and sediment begins to build up. These locations allow the marshes to absorb the excess nutrients from the water running through them before they reach the oceans and estuaries. These marshes are slowly declining. Coastal development and urban sprawl have caused significant loss of these essential habitats. Although considered

2021-401: The spring, or on a small scale by returning wetlands to urban landscapes. Bogs 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 ; alkaline mires are called fens . A bayhead

2068-492: The summer. Vernal pools are a type of marsh found only seasonally in shallow depressions in the land. They can be covered in shallow water, but in the summer and fall, they can be completely dry. In western North America, vernal pools tend to form in open grasslands, whereas in the east, they often occur in forested landscapes. Further south, vernal pools form in pine savannas and flatwoods . Many amphibian species depend upon vernal pools for spring breeding; these ponds provide

2115-401: The water surface to cover bays or even entire small lakes. Bogs at the edges of lakes may become detached and form floating islands . A cataract bog is a rare ecological community formed where a permanent stream flows over a granite outcropping. The sheeting of water keeps the edges of the rock wet without eroding the soil, but in this precarious location, no tree or large shrub can maintain

2162-664: The year and generally have a circular shape. As the playa dries during the summer, conspicuous plant zonation develops along the shoreline. Prairie potholes are found in northern North America, such as the Prairie Pothole Region . Glaciers once covered these landscapes, and as a result, shallow depressions were formed in great numbers. These depressions fill with water in the spring. They provide important breeding habitats for many species of waterfowl. Some pools only occur seasonally, while others retain enough water to be present all year. Many kinds of marsh occur along

2209-452: Was one of the first companies to mechanically harvest peat, which is being phased out. The other major use of dried peat is as a soil amendment (sold as moss peat or sphagnum peat ) to increase the soil's capacity to retain moisture and enrich the soil. It is also used as a mulch . Some distilleries , notably in the Islay whisky-producing region, use the smoke from peat fires to dry

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