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27-719: The Shweli River is a tributary of the Irrawaddy and forms part of the northern boundary with Katha Township and part of the eastern boundary with the Shan State. The Indaung Reserved Forest and the Kyauktaung Reserved Forest are located in the eastern part of the township. Among the towns and villages in Tigyaing Township are: Aledaw, Datwin, Daungbin, Htidawgaing, Myadaung, Tawma and Wundingon. This Katha District location article

54-581: 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

81-522: 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

108-576: 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

135-512: 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

162-457: 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

189-477: 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

216-491: Is Longjiang Dam at Zhefang , Mangshi which became operational in 2010. Marshes 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

243-612: Is a stub . You can help Misplaced Pages by expanding it . Shweli River Shweli River ( Burmese : ရွှေလီမြစ် ; Chinese : 瑞丽江 ) is a river in China and Myanmar (Burma). Also known as the Nam Mao ( Shan : ၼမ်ႉမၢဝ်း ; Tai Nüa : ᥘᥛᥳ ᥛᥣᥝᥰ ) in Shan or Dai , and Ruili River or Longchuan River (龙川江) in Chinese , it forms 26 km of the boundary between Burma and China . It

270-757: Is one of the tributaries of the Myanmar's chief river, the Ayeyarwady , and originates in Yunnan Province of China. It flows through northern Shan state and Sagaing Division , and enters the Ayeyarwady at Inywa, 60 kilometres (37 mi) north of Tagaung and south of Katha . Dai people, known as Shan in Burma, migrated from Yunnan into Burma along the Shweli. Maw Shans from Mong Mao settled in

297-538: The military authorities to the local farmers as part of the opium eradication drive, most of the crop is to be exported back to China. The Shweli I Dam was put into operation on the river in 2008. It is the first of three planned dams on the main stem in Myanmar. The upper river in China has abundant hydropower reserves; 18 hydroelectric power stations have been built, mostly in Tengchong . The biggest one in China

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324-407: The sarus crane ( Grus antigone ) are native to the Shweli river. The gharial ( Gavialis gangeticus ), a crocodilian , was last spotted in 1927. The Irrawaddy dolphin has been known to reach the upper tributaries of the Ayeyarwady including the Shweli. Based on surveys in 2003 and 2006, a total of 49 species of fish were collected in Shweli river and tributaries in China. By the combination of

351-745: The Shweli and Myitnge river valleys. The territory south of the Shweli, about 500–600 square kilometres (190–230 sq mi), north of Namtu and from Namkham to the west, was under the control of the Communist Party of Burma (CPB) from 1968 to 1986. The Kachin Independence Army (KIA) controlled the area north of the Shweli, and the Shan State Army (SSA) and the Palaung State Liberation Army (PSLA) farther south. The Shweli river valley and

378-543: The Shweli at the confluence with the Ayeyarwady. Hills are covered with broad-leaved species of Terminalia and Shorea trees. Rhododendron edgeworthii , of the finest foliage and flowers ranging in colour from white to white flushed pink or pink, sometimes with a yellow blotch, was part of a collection made in 1997 on the Shweli – Salween divide on the Yunnan border with Burma. White-winged wood duck ( Cairina scutulata ), an endangered species of forest duck, and

405-637: The Shweli valley, and raided and invaded the Bamar heartlands down the Shweli, some people believe that King Anawrahta of Bagan (1044–1077) reduced Mong Mao to a vassal state. But the event is that when the Anawrahta visited Nanzhao in quest of the Buddha's tooth while returning, married Sao-Môn-la, a daughter of the Mong Mao king. But there is nothing to show that the Mong Mao king ever had to acknowledge

432-1052: 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

459-641: 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 ,

486-447: 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

513-500: The hills around Momeik (Mong Mit) and Mogok with its ruby mines had been old CPB strongholds since the 1950s. Momeik itself was captured by the Communists in 1977. The Burmese Army recaptured the territory in early 1987, and subsequently opened up border trade with China . The region is inhabited mainly by Shan people, some Kachin and Palaung and a few Chinese . There are extensive marshes along both banks of

540-421: The investigated species and specimens in the museum of Kunming Institute of Zoology , there are a total of 60 species belonging to 8 orders, 19 families, and 44 genera in Shweli river drainage, among which 16 species are endemic to Irrawaddy drainage and 9 species are alien species. On composition, the species of Cyprinidae are dominant, which have 26 species accounting for 43.3% of the total number of species. In

567-469: 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

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594-486: 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

621-637: The next place, Sisoridae has 11 species, accounting for 18.3% of the total. Muse is connected to Ruili on the Chinese side, there is a roaring trade in goods and services across the "Gun Bridge", so called because of the armaments transported from China to the military government of Burma. The old bridge was replaced by a new wider one in 2005. Gems especially jade and produce , and illicit heroin , are exported in exchange for cheap motorcycles and household goods from China. More recently, Chinese hybrid rice called sinn shweli has been introduced by

648-678: The overlordship of the Pagan monarch. The fall of the kingdom of Bagan in the 13th century, however, saw a resurgence of Shan power, although King Bayinnaung (1551–1581) of the Taungoo Dynasty succeeded in pacifying them to establish Burmese suzerainty once and for all. King Hsinbyushin (1763–1776) of the Konbaung Dynasty also successfully resisted Chinese army in Sino-Burmese War (1765-9) that advanced down

675-463: 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

702-492: 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

729-664: 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

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