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77-562: The Coongie Lakes is a freshwater wetland system located in the Far North region of South Australia . The 21,790-square-kilometre (8,410 sq mi) lakes system is located approximately 1,046 kilometres (650 miles) north of the Adelaide city centre . The wetlands includes lakes, channels, billabongs , shallow floodplains, deltas, and interdune swamps. It lies on the floodplain of Cooper Creek , an ephemeral river flowing through

154-711: A sink or a source of carbon, depending on the specific wetland. If they function as a carbon sink, they can help with climate change mitigation . However, wetlands can also be a significant source of methane emissions due to anaerobic decomposition of soaked detritus , and some are also emitters of nitrous oxide . Humans are disturbing and damaging wetlands in many ways, including oil and gas extraction , building infrastructure, overgrazing of livestock , overfishing , alteration of wetlands including dredging and draining, nutrient pollution , and water pollution . Wetlands are more threatened by environmental degradation than any other ecosystem on Earth, according to

231-424: A cabinet minister. The cabinet consists of the prime minister and senior ministers and makes most of the important policy decisions of the government. Members of the cabinet are selected by the prime minister and may be added or removed at any time, usually through a cabinet reshuffle . Cabinet meetings are strictly private and occur once a week where vital issues are discussed and policy formulated. The cabinet

308-604: A desert landscape in the Lake Eyre Basin which rarely, after occasional large floods, empties into Lake Eyre . The wetland system has been recognised both as being of international importance by designation under the Ramsar Convention with a listing on 15 June 1987 and being nationally important within Australia with a listing in A Directory of Important Wetlands in Australia (DIWA). Its extent includes

385-402: A frequency and duration to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally included swamps, marshes, bogs, and similar areas.' For each of these definitions and others, regardless of the purpose, hydrology is emphasized (shallow waters, water-logged soils). The soil characteristics and

462-435: A period of rapid, opportunistic plant growth and an influx of wildlife, especially of large numbers of waterbirds such as ducks , cormorants , pelicans , ibises , spoonbills , herons and waders that aggregate to feed and breed before dispersing as the waters recede. Mammals present in the area include red kangaroos , dingos and, in the wetlands, rakali . There are also a variety of frogs and reptiles , including

539-1259: A polar climate, wetland temperatures can be as low as −50 °C (−58 °F). Peatlands in arctic and subarctic regions insulate the permafrost , thus delaying or preventing its thawing during summer, as well as inducing its formation. The amount of precipitation a wetland receives varies widely according to its area. Wetlands in Wales , Scotland , and western Ireland typically receive about 1,500 mm (59 in) per year. In some places in Southeast Asia , where heavy rains occur, they can receive up to 10,000 mm (390 in). In some drier regions, wetlands exist where as little as 180 mm (7.1 in) precipitation occurs each year. Temporal variation: Surface flow may occur in some segments, with subsurface flow in other segments. Wetlands vary widely due to local and regional differences in topography , hydrology , vegetation , and other factors, including human involvement. Other important factors include fertility, natural disturbance, competition, herbivory , burial and salinity. When peat accumulates, bogs and fens arise. The most important factor producing wetlands

616-540: A portion of the overall water cycle, which also includes atmospheric water (precipitation) and groundwater . Many wetlands are directly linked to groundwater and they can be a crucial regulator of both the quantity and quality of water found below the ground. Wetlands that have permeable substrates like limestone or occur in areas with highly variable and fluctuating water tables have especially important roles in groundwater replenishment or water recharge. Substrates that are porous allow water to filter down through

693-642: A predominant influence over who was elected to Labor ministries, although the leaders of the party factions also exercised considerable influence. However, in 2007 Prime Minister Kevin Rudd , assumed the power to choose the ministry alone. Later, the caucus regained this power in 2013. According to reporting by the Sydney Morning Herald , ministerial positions are allocated by the Left and Right factions proportionally according to their representation in

770-456: A protective barrier to coastal shoreline. Mangroves stabilize the coastal zone from the interior and will migrate with the shoreline to remain adjacent to the boundary of the water. The main conservation benefit these systems have against storms and storm surges is the ability to reduce the speed and height of waves and floodwaters. Government of Australia [REDACTED] [REDACTED] The Australian Government , also known as

847-422: A strong influence on wetland water chemistry, particularly in coastal wetlands and in arid and semiarid regions with large precipitation deficits. Natural salinity is regulated by interactions between ground and surface water, which may be influenced by human activity. Carbon is the major nutrient cycled within wetlands. Most nutrients, such as sulfur , phosphorus , carbon , and nitrogen are found within

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924-410: A unique kind of wetland where lush plant growth and slow decay of dead plants (under anoxic conditions) results in organic peat accumulating; bogs, fens, and mires are different names for peatlands. Variations of names for wetland systems: Some wetlands have localized names unique to a region such as the prairie potholes of North America's northern plain, pocosins , Carolina bays and baygalls of

1001-515: A wetland is "an ecosystem that arises when inundation by water produces soils dominated by anaerobic and aerobic processes, which, in turn, forces the biota, particularly rooted plants, to adapt to flooding". Sometimes a precise legal definition of a wetland is required. The definition used for regulation by the United States government is: 'The term "wetlands" means those areas that are inundated or saturated by surface or ground water at

1078-422: A wetland system includes its plants ( flora ) and animals ( fauna ) and microbes (bacteria, fungi). The most important factor is the wetland's duration of flooding. Other important factors include fertility and salinity of the water or soils. The chemistry of water flowing into wetlands depends on the source of water, the geological material that it flows through and the nutrients discharged from organic matter in

1155-403: A wetland) affects hydro-periods (temporal fluctuations in water levels) by controlling the water balance and water storage within a wetland. Landscape characteristics control wetland hydrology and water chemistry. The O 2 and CO 2 concentrations of water depend upon temperature , atmospheric pressure and mixing with the air (from winds or water flows). Water chemistry within wetlands

1232-558: A whole. To replace these wetland ecosystem services , enormous amounts of money would need to be spent on water purification plants, dams, levees, and other hard infrastructure, and many of the services are impossible to replace. Floodplains and closed-depression wetlands can provide the functions of storage reservoirs and flood protection. The wetland system of floodplains is formed from major rivers downstream from their headwaters . "The floodplains of major rivers act as natural storage reservoirs, enabling excess water to spread out over

1309-594: A wide area, which reduces its depth and speed. Wetlands close to the headwaters of streams and rivers can slow down rainwater runoff and spring snowmelt so that it does not run straight off the land into water courses. This can help prevent sudden, damaging floods downstream." Notable river systems that produce wide floodplains include the Nile River , the Niger river inland delta, the Zambezi River flood plain,

1386-525: Is arid and has a very low human population density; it is used mainly for cattle grazing, as well as for oil and gas production, and is becoming increasingly important for tourism. Some of the wetlands fill only on rare occasions; some contain water for a short time after periodic flooding, while others are permanent or almost permanent. It lies within the traditional lands of the Yandruwandha , Yawarrawarrka , Ngamini and Dieri people. The banks and

1463-440: Is determined by the pH , salinity , nutrients, conductivity , soil composition, hardness , and the sources of water. Water chemistry varies across landscapes and climatic regions. Wetlands are generally minerotrophic (waters contain dissolved materials from soils) with the exception of ombrotrophic bogs that are fed only by water from precipitation. Because bogs receive most of their water from precipitation and humidity from

1540-418: Is difficult to apply as many actions by executive agencies are wide-ranging, binding and conducted independently of Parliament. The executive can also be delegated legislative power through provisions allowing for statutory instruments and Henry VIII clauses . Ultimately whether power is executive or legislative is determined on a case-by-case basis, and involves the weighing up of various factors, rather than

1617-412: Is hydrology, or flooding . The duration of flooding or prolonged soil saturation by groundwater determines whether the resulting wetland has aquatic, marsh or swamp vegetation . Other important factors include soil fertility, natural disturbance, competition, herbivory , burial, and salinity. When peat from dead plants accumulates, bogs and fens develop. Wetland hydrology is associated with

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1694-582: Is not a legal entity; it exists solely by convention. Its decisions do not in and of themselves have legal force. However, it serves as the practical expression of the Federal Executive Council , which is Australia's highest formal governmental body. In practice, the Federal Executive Council meets solely to endorse and give legal force to decisions already made by the cabinet. All members of the cabinet are members of

1771-451: Is the only place in the world where both crocodiles and alligators coexist. The saltwater crocodile inhabits estuaries and mangroves. Snapping turtles also inhabit wetlands. Birds , particularly waterfowl and waders use wetlands extensively. Mammals of wetlands include numerous small and medium-sized species such as voles , bats , muskrats and platypus in addition to large herbivorous and apex predator species such as

1848-554: Is triangular in shape. The northern apex of the triangle is near Lake Moorayepe, the south western apex is near Marion Hill in the south and the eastern apex coincides with the South Australia-Queensland border to the immediate east of the town of Innamincka. The area of land within the boundary is reported as being 21,790 square kilometres (8,410 sq mi). Land tenure is a mix of crown land , pastoral lease and protected area . The surrounding region

1925-545: Is usually saturated with water". More precisely, wetlands are areas where "water covers the soil , or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season". A patch of land that develops pools of water after a rain storm would not necessarily be considered a "wetland", even though the land is wet. Wetlands have unique characteristics: they are generally distinguished from other water bodies or landforms based on their water level and on

2002-722: The Australian Capital Territory . The head offices of all the federal departments are located in Canberra, along with Parliament House and the High Court . The name of the government in the Constitution of Australia is the "Government of the Commonwealth". This was the name used in many early federal government publications. However, in 1965 Robert Menzies indicated his preference for

2079-484: The Australian Labor Party (ALP), in office since the 2022 federal election . The prime minister is the head of the federal government and is a role which exists by constitutional convention, rather than by law. They are appointed to the role by the governor-general (the representative of the monarch of Australia ). The governor-general normally appoints the parliamentary leader who commands

2156-726: The Commonwealth Government or simply as the Federal government , is the national executive government of Australia, a federal parliamentary constitutional monarchy . The executive consists of the prime minister and other cabinet ministers that currently have the support of a majority of the members of the House of Representatives (the lower house) and also includes the departments and other executive bodies that ministers oversee. The current executive government consists of Anthony Albanese and other ministers of

2233-505: The Millennium Ecosystem Assessment from 2005. Methods exist for assessing wetland ecological health . These methods have contributed to wetland conservation by raising public awareness of the functions that wetlands can provide. Since 1971, work under an international treaty seeks to identify and protect " wetlands of international importance ." A simplified definition of wetland is "an area of land that

2310-688: The Pantanal in South America, and the Sundarbans in the Ganges - Brahmaputra delta. Wetlands contribute many ecosystem services that benefit people. These include for example water purification , stabilization of shorelines, storm protection and flood control . In addition, wetlands also process and condense carbon (in processes called carbon fixation and sequestration ), and other nutrients and water pollutants . Wetlands can act as

2387-488: The Strzelecki Regional Reserve . An area of 593.2 square kilometres (229.0 square miles) located at the northern of the wetland system and that is specifically associated with a number of water bodies has been identified as an important bird area by Birdlife International because it supports “more than 1% of the world populations of 12 species of waterbird and shorebird” as well as “populations of

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2464-444: The atmosphere , their water usually has low mineral ionic composition. In contrast, wetlands fed by groundwater or tides have a higher concentration of dissolved nutrients and minerals. Fen peatlands receive water both from precipitation and ground water in varying amounts so their water chemistry ranges from acidic with low levels of dissolved minerals to alkaline with high accumulation of calcium and magnesium . Salinity has

2541-576: The beavers , coypu , swamp rabbit , Florida panther , jaguar , and moose . Wetlands attract many mammals due to abundant seeds, berries, and other vegetation as food for herbivores, as well as abundant populations of invertebrates, small reptiles and amphibians as prey for predators. Invertebrates of wetlands include aquatic insects such as dragonflies , aquatic bugs and beetles , midges, mosquitos , crustaceans such as crabs, crayfish, shrimps, microcrustaceans, mollusks like clams, mussels, snails and worms. Invertebrates comprise more than half of

2618-637: The inland taipan . The wetland system has recognition both internationally under the Ramsar Convention and within Australia with an identical listing in "A Directory of Important Wetlands in Australia" (DIWA). It was listed on 15 June 1987 as Ramsar site 376 while it was listed in DIWA prior to 1995. While the Ramsar convention is a treaty obligation of the Australian government , jurisdiction for

2695-462: The Constitution . These were defined by High Court Justice Anthony Mason , as powers "peculiarly adapted to the government of a nation and which cannot otherwise be carried on for the benefit of the nation". They have been found to include the power to provide financial stimulus payments to households during a financial crisis and the power to prevent "unlawful non-citizens" from entering

2772-551: The Dismissal of 1975. In that case, the Governor-General Sir John Kerr dismissed the prime minister and government due to his conclusion that the government had failed to secure supply. The propriety of the use of the powers during that event remain highly contested. The Federal Executive Council is the body that formally advises the governor-general in the exercise of executive power. Decisions of

2849-680: The Executive Council. A senior member of the cabinet holds the office of vice-president of the Executive Council and acts as presiding officer of the Executive Council in the absence of the governor-general. The cabinet meets not only in Canberra but also in state capitals, most frequently Sydney and Melbourne. Kevin Rudd was in favour of the cabinet meeting in other places, such as major regional cities. There are Commonwealth Parliament Offices in each state capital, with those in Sydney located in 1 Bligh Street . Until 1956 all members of

2926-515: The King and the governor-general must follow the advice of the prime minister or other ministers in the exercise of his powers. Powers subject to the governor-general’s discretion are known as reserve powers. While certain reserve powers, such as the ability to choose the prime minister most likely to command the confidence of the lower house, are uncontroversial, others are subject to much greater debate. The most notable example of their use occurring in

3003-639: The Okavango River inland delta, the Kafue River flood plain, the Lake Bangweulu flood plain (Africa), Mississippi River (US), Amazon River (South America), Yangtze River (China), Danube River (Central Europe) and Murray-Darling River (Australia). Groundwater replenishment can be achieved for example by marsh , swamp , and subterranean karst and cave hydrological systems. The surface water visibly seen in wetlands only represents

3080-549: The Parliament. The King is not involved with the day-to-day operations of the government, belonging (according to the Bagehot formulation) to the "dignified" rather than the "efficient" part of government. While the executive power of the Commonwealth is formally vested in the monarch, the Constitution requires those powers to be exercisable by a governor-general, appointed by the monarch as their representative (but since

3157-522: The Southeastern US, mallines of Argentina, Mediterranean seasonal ponds of Europe and California, turloughs of Ireland, billabongs of Australia, among many others. Wetlands are found throughout the world in different climates. Temperatures vary greatly depending on the location of the wetland. Many of the world's wetlands are in the temperate zones , midway between the North or South Poles and

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3234-502: The US, the best known classifications are the Cowardin classification system and the hydrogeomorphic (HGM) classification system. The Cowardin system includes five main types of wetlands: marine (ocean-associated), estuarine (mixed ocean- and river-associated), riverine (within river channels), lacustrine (lake-associated) and palustrine (inland nontidal habitats). Peatlands are

3311-610: The United States' commercial fish and shellfish stocks depend solely on estuaries to survive. Amphibians such as frogs and salamanders need both terrestrial and aquatic habitats in which to reproduce and feed. Because amphibians often inhabit depressional wetlands like prairie potholes and Carolina bays, the connectivity among these isolated wetlands is an important control of regional populations. While tadpoles feed on algae, adult frogs forage on insects. Frogs are sometimes used as an indicator of ecosystem health because their thin skin permits absorption of nutrients and toxins from

3388-588: The allocation of their portfolios. When Labor first held office under Chris Watson , Watson assumed the right to choose members of his cabinet. In 1907, however, the party decided that future Labor cabinets would be elected by the members of the Parliamentary Labor Party, the Caucus , and the prime minister would retain the right to allocate portfolios. This practice was followed until 2007. Between 1907 and 2007, Labor prime ministers exercised

3465-488: The application of a strict test. As most executive power is granted by statute, the executive power of the government is similarly limited to those areas in which the Commonwealth is granted the power to legislate under the constitution (primarily under section 51 ). They also retain certain powers traditionally part of the royal prerogative , such as the power to declare war and enter into treaties. Finally, there exists certain "nationhood powers", implied from section 61 of

3542-444: The appointing of Sir Isaac Isaacs in 1931, always appointed according to the advice of federal ministers, rather than British ministers). Members of the government do not exercise executive power of their own accord but are instead appointed by the governor-general as ministers, formally as the "Queen's [or King's] Ministers of State". As such, while government ministers make most major decisions in cabinet, if those decisions require

3619-414: The body give legal effect to decisions already deliberated at cabinet. All current and formers ministers are members of the council, although only current ministers are summoned to meetings. The governor-general usually presides at council meetings, but in his or her absence another minister nominated as the vice-president of the Executive Council presides at the meeting of the council. Since 1 June 2022,

3696-599: The bottom layer includes public servants , police, government departments and independent statutory bodies who directly implement policy and laws. Executive power is also difficult to clearly define. In the British context, it was defined by John Locke as all government power not legislative or judicial in nature. The key distinction is that while legislative power involves setting down rules of general application, executive power involves applying those rules to specific situations. In practice, however, this definition

3773-470: The confidence of a majority of the members of the House of Representatives. Also by convention, the prime minister is a member of the lower house. The prime minister and their sworn ministers form the cabinet , the key decision-making organ of the government that makes policy and decides the agenda of the government. Members of the government can exercise both legislative power (through their control of

3850-553: The country . Ministers drawn from the Australian parliament form the core of the Australian Government. A subset of these ministers form the cabinet, the de facto highest executive body of the government. Ministers not part of cabinet belong to the outer ministry. Additionally, there are also assistant ministers (formally parliamentary secretaries ), responsible for a specific policy area, reporting directly to

3927-634: The equator. In these zones, summers are warm and winters are cold, but temperatures are not extreme. In subtropical zone wetlands, such as along the Gulf of Mexico , average temperatures might be 11 °C (52 °F). Wetlands in the tropics are subjected to much higher temperatures for a large portion of the year. Temperatures for wetlands on the Arabian Peninsula can exceed 50 °C (122 °F) and these habitats would therefore be subject to rapid evaporation. In northeastern Siberia , which has

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4004-504: The following areas: According to the Ramsar Convention: The economic worth of the ecosystem services provided to society by intact, naturally functioning wetlands is frequently much greater than the perceived benefits of converting them to 'more valuable' intensive land use – particularly as the profits from unsustainable use often go to relatively few individuals or corporations, rather than being shared by society as

4081-419: The formal endorsement of the governor-general in council, those decisions do not have legal force until approved by the Federal Executive Council , which is presided over by the governor-general. Similarly, laws passed by both houses of parliament require royal assent before being enacted, as the monarch is a constituent part of the Parliament. However, in all these cases, except for certain reserve powers,

4158-468: The interface between truly terrestrial ecosystems and aquatic systems, making them inherently different from each other, yet highly dependent on both." In environmental decision-making, there are subsets of definitions that are agreed upon to make regulatory and policy decisions. Under the Ramsar international wetland conservation treaty , wetlands are defined as follows: An ecological definition of

4235-462: The known animal species in wetlands, and are considered the primary food web link between plants and higher animals (such as fish and birds). Depending on a wetland's geographic and topographic location, the functions it performs can support multiple ecosystem services , values, or benefits. United Nations Millennium Ecosystem Assessment and Ramsar Convention described wetlands as a whole to be of biosphere significance and societal importance in

4312-765: The management of the wetland system lies with the South Australian government agency, the Department of Environment, Water and Natural Resources . The following protected areas proclaimed under the National Parks and Wildlife Act 1972 (SA) exist either wholly or partially within the extent of the wetland system: the Innamincka Regional Reserve , the Malkumba-Coongie Lakes National Park and

4389-790: The ministry differs depending on their party. When the Liberal Party and its predecessors (the Nationalist Party and the United Australia Party ) have been in coalition with the National Party or its predecessor the Country Party , the leader of the junior Coalition party has had the right to nominate their party's members of the Coalition ministry, and to be consulted by the prime minister on

4466-464: The ministry were members of the cabinet. The growth of the ministry in the 1940s and 1950s made this increasingly impractical, and in 1956 Robert Menzies created a two-tier ministry, with only senior ministers holding cabinet rank, also known within parliament as the front bench . This practice has been continued by all governments except the Whitlam government . The prime minister's power to select

4543-399: The name "Australian Government" in order to prevent confusion with the new Commonwealth of Nations . The Whitlam government legislated the use of "Government of Australia" in 1973 in line with its policy of promoting national goals and aspirations. However, academic Anne Twomey argues that the government was also motivated by a desire to blur the differences between the Commonwealth and

4620-404: The other two branches of government, however, membership of the executive is not clearly defined. One definition describes the executive as a pyramid, consisting of three layers. At the top stands the king, as the symbolic apex and formal repository of executive power. Below him lies a second layer made up of the prime minister, cabinet and other ministers who in practice lead the executive. Finally,

4697-418: The parliament) and executive power (as ministers on behalf of the governor-general and the monarch). However, in accordance with responsible government , and to ensure accountability, actions of the government in its executive capacity are subject to scrutiny from parliament. The Australian Government is headquartered in the executive wing of Parliament House , located in the nation's capital, Canberra , in

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4774-443: The periodically flooded areas of Cooper Creek and Coongie Lakes wetland system are vegetated by river red gums and coolibahs , often with a dense understorey of lignum thickets. The adjacent gibber plains are sparsely covered with Mitchell grass , while the dune country has species of Dodonaea , sandhill wattle and sandhill canegrass . Major floods, generally originating in heavy rainfall in western Queensland, initiate

4851-837: The plants and animals controlled by the wetland hydrology are often additional components of the definitions. Wetlands can be tidal (inundated by tides) or non-tidal. The water in wetlands is either freshwater , brackish , saline , or alkaline . There are four main kinds of wetlands – marsh , swamp , bog , and fen (bogs and fens being types of peatlands or mires ). Some experts also recognize wet meadows and aquatic ecosystems as additional wetland types. Sub-types include mangrove forests , carrs , pocosins , floodplains , peatlands, vernal pools , sinks , and many others. The following three groups are used within Australia to classify wetland by type: Marine and coastal zone wetlands, inland wetlands and human-made wetlands. In

4928-557: The regional town of Innamincka , the Malkumba-Coongie Lakes National Park , the Innamincka Regional Reserve , the Strzelecki Regional Reserve and the Coongie Lakes Important Bird Area. The Coongie Lakes is located in the north-east corner of South Australia about 1,046 kilometres (650 miles) north of the Adelaide city centre. For management purposes, the wetland system has been given a boundary which

5005-429: The soil and underlying rock into aquifers which are the source of much of the world's drinking water . Wetlands can also act as recharge areas when the surrounding water table is low and as a discharge zone when it is high. Mangroves , coral reefs , salt marsh can help with shoreline stabilization and storm protection. Tidal and inter-tidal wetland systems protect and stabilize coastal zones. Coral reefs provide

5082-537: The soil of wetlands. Anaerobic and aerobic respiration in the soil influences the nutrient cycling of carbon, hydrogen, oxygen, and nitrogen, and the solubility of phosphorus thus contributing to the chemical variations in its water. Wetlands with low pH and saline conductivity may reflect the presence of acid sulfates and wetlands with average salinity levels can be heavily influenced by calcium or magnesium. Biogeochemical processes in wetlands are determined by soils with low redox potential. The life forms of

5159-412: The soils and plants at higher elevations. Plants and animals may vary within a wetland seasonally or in response to flood regimes. There are four main groups of hydrophytes that are found in wetland systems throughout the world. Submerged wetland vegetation can grow in saline and fresh-water conditions. Some species have underwater flowers, while others have long stems to allow the flowers to reach

5236-530: The sources of water include tidal wetlands , where the water source is ocean tides ); estuaries , water source is mixed tidal and river waters; floodplains , water source is excess water from overflowed rivers or lakes; and bogs and vernal ponds , water source is rainfall or meltwater . The world's largest wetlands include the Amazon River basin , the West Siberian Plain ,

5313-406: The spatial and temporal dispersion, flow, and physio-chemical attributes of surface and ground waters. Sources of hydrological flows into wetlands are predominantly precipitation , surface water (saltwater or freshwater), and groundwater. Water flows out of wetlands by evapotranspiration , surface flows and tides , and subsurface water outflow. Hydrodynamics (the movement of water through and from

5390-512: The states in an attempt to increase federal power. The Parliament of Australia website also notes that the name "Australian Government" is preferable in order to avoid confusion with the Commonwealth of Nations and the US federal government by those not familiar with Australia's system of government. This terminology remains preferred by the government. However, the terms Commonwealth Government and federal government are also common. In some contexts,

5467-719: The surface of the water. When trees and shrubs comprise much of the plant cover in saturated soils, those areas in most cases are called swamps . The upland boundary of swamps is determined partly by water levels. This can be affected by dams Some swamps can be dominated by a single species, such as silver maple swamps around the Great Lakes . Others, like those of the Amazon basin , have large numbers of different tree species. Other examples include cypress ( Taxodium ) and mangrove swamps. Many species of fish are highly dependent on wetland ecosystems. Seventy-five percent of

5544-496: The surface. Submerged species provide a food source for native fauna, habitat for invertebrates, and also possess filtration capabilities. Examples include seagrasses and eelgrass . Floating water plants or floating vegetation are usually small, like those in the Lemnoideae subfamily (duckweeds). Emergent vegetation like the cattails ( Typha spp.), sedges ( Carex spp.) and arrow arum ( Peltandra virginica ) rise above

5621-464: The surrounding environment resulting in increased extinction rates in unfavorable and polluted environmental conditions. Reptiles such as snakes , lizards , turtles , alligators and crocodiles are common in wetlands of some regions. In freshwater wetlands of the Southeastern US, alligators are common and a freshwater species of crocodile occurs in South Florida. The Florida Everglades

5698-459: The term "government" refers to all public agencies that exercise the power of the State , whether legislative, executive or judicial. The government's primary role, in its executive capacity, is to implement the laws passed by the parliament. However, laws are frequently drafted according to the interests of the executive branch as the government often also controls the legislative branch. Unlike

5775-440: The types of plants that live within them. Specifically, wetlands are characterized as having a water table that stands at or near the land surface for a long enough period each year to support aquatic plants . A more concise definition is a community composed of hydric soil and hydrophytes . Wetlands have also been described as ecotones , providing a transition between dry land and water bodies. Wetlands exist "...at

5852-406: The vulnerable Australian painted snipe, the near threatened blue-billed duck, the restricted-range Eyrean grasswren and five species restricted to the arid biome.” Wetland Wetlands exist on every continent , except Antarctica . The water in wetlands is either freshwater , brackish or saltwater . The main types of wetland are defined based on the dominant plants and the source of

5929-494: The water. For example, marshes are wetlands dominated by emergent herbaceous vegetation such as reeds , cattails and sedges . Swamps are dominated by woody vegetation such as trees and shrubs (although reed swamps in Europe are dominated by reeds, not trees). Mangrove forest are wetlands with mangroves , halophytic woody plants that have evolved to tolerate salty water . Examples of wetlands classified by

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