Tanguar Haor ( bn, টাঙ্গুয়ার হাওর; also called Tangua haor), located in the Dharmapasha and Tahirpur upazilas of

Sunamganj District Sunamganj ( bn, সুনামগঞ্জ) is a district located in north-eastern Bangladesh within the Sylhet Division. History In the ancient period, Sunamganj was part of the Laur Kingdom. After the conquest of Sylhet (Kingdom of Gauiurh) ...

Bangladesh Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...

, is a unique

wetland A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...

ecosystem An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the syste ...

of national importance and has come into international focus. The area of Tanguar Haor including 46 villages within the

haor A ( bn, হাওর) is a wetland ecosystem in the north eastern part of Bangladesh which physically is a bowl or saucer shaped shallow depression, also known as a backswamp.MK Alam; ''Wave attack in Haor areas of Bangladesh and cement concre ...

is about of which 2,802.36 ha² is wetland. It is the source of livelihood for more than 40,000 people. Bangladesh declared it an Ecologically Critical Area in 1999 considering its critical condition as a result of

overexploitation Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource, as it will be unable to replenish. The term app ...

of its natural resources. Every winter the haor is home to about 200 types of migratory birds. In 1999–2000, the government earned 7,073,184 takas as revenue just from fisheries of the haor. There are more than 140 species of fresh water fish in the haor. The more predominant among them are: , Cat fish, . Gulli, balua, ban tulsi, nalkhagra and other freshwater wetland trees are in this haor. Plant species like Hizol (''

Barringtonia acutangula ''Barringtonia acutangula'' is a species of ''Barringtonia'' native to coastal wetlands in southern Asia and northern Australasia, from Afghanistan east to the Philippines, Queensland and the Northern Territory. Common names include freshwater m ...

''), '' Clematis cadmia'', ''

Crataeva nurvala ''Crateva'' is a genus of flowering plants in the caper family, Capparaceae. Species Accepted species include: * ''Crateva adansonii'' DC. * ''Crateva excelsa'' Bojer * ''Crateva greveana'' Baill. * ''Crateva humblotii'' (Baill.) Hadj-Moust. ...

'', ''

Euryale ferox ''Euryale ferox,'' commonly known as prickly waterlily, makhana or Gorgon plant, is a species of water lily found in southern and eastern Asia, and the only extant member of the genus ''Euryale''. The edible seeds, called fox nuts or ''makhan ...

'', ''

Nelumbo nucifera ''Nelumbo nucifera'', also known as sacred lotus, Laxmi lotus, Indian lotus, or simply lotus, is one of two extant species of aquatic plant in the family Nelumbonaceae. It is sometimes colloquially called a water lily, though this more often re ...

'', ''

Ottelia alismoides ''Ottelia alismoides'', commonly known as duck lettuce, is a species of aquatic plant native to Asia and northern Australia. References External links * * Flora of Korea Monocots of Australia alismoides {{Monocot-stub ...

'', ''

Oxystelma secamone ''Oxystelma'' is a genus of flowering plants of the family Apocynaceae, first described as a genus in 1810. It is native to Africa and Asia. Species ''The Plant List'' includes: # ''Oxystelma bornouense'' R.Br. - tropical Africa # ''Oxystelma es ...

'' var. ''secamone'', ''

Pongamia pinnata ''Millettia pinnata'' is a species of tree in the pea family, Fabaceae, native to eastern and tropical Asia, Australia, and Pacific islands. It is often known by the synonym '' Pongamia pinnata''. Its common names include Indian beech and Pongam ...

'', ''

Rosa clinophylla ''Rosa clinophylla'' is a member of the genus ''Rosa'' native to the Himalayas, South Asia, and Southeast Asia. It is a large shrub growing to tall and it can grow in swampy areas such as the haors (or beel A beel ( Bengali and Assamese: ...

'', and ''

Typha ''Typha'' is a genus of about 30 species of monocotyledonous flowering plants in the family Typhaceae. These plants have a variety of common names, in British English as bulrush or reedmace, in American English as reed, cattail, or punks, in A ...

'' species are present.

References

{{coord, 25, 09, N, 91, 04, E, type:waterbody, display=title Wetlands of Bangladesh Ramsar sites in Bangladesh Sunamganj District