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Ichkeul National Park
Lake Ichkeul ( ar, بحيرة اشكل) is a lake in northern Tunisia, located 20 kilometres (12 miles) to Bizerte, the northernmost city in Africa on the Mediterranean Sea. The lake and wetlands of Ichkeul National Park are an important stopping-over point for hundreds of thousands of migrating birds each year. Among the lake's visitors are ducks, geese, storks, and pink flamingoes. Dam construction on the lake's feeder rivers has produced major changes to the ecological balance of the lake and wetlands. History In the reign of the Hafsid dynasty, Lake Ichkuel was a reserve during the 13th century. It later became the property of the public domain in the early 20th century during French rule. Since 1980, it has been a UNESCO World Heritage Site. Because dams have sharply reduced the freshwater inflow to the lakes and marshes, the reedbeds, sedges, and other fresh-water plant species have been replaced with salt-loving plants. These changes have produced a sharp reduction in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunisia
) , image_map = Tunisia location (orthographic projection).svg , map_caption = Location of Tunisia in northern Africa , image_map2 = , capital = Tunis , largest_city = capital , coordinates = , official_languages = Arabic Translation by the University of Bern: "Tunisia is a free State, independent and sovereign; its religion is the Islam, its language is Arabic, and its form is the Republic." , religion = , languages_type = Spoken languages , languages = Minority Dialects : Jerba Berber (Chelha) Matmata Berber Judeo-Tunisian Arabic (UNESCO CR) , languages2_type = Foreign languages , languages2 = , ethnic_groups = * 98% Arab * 2% Other , demonym = Tunisian , government_type = Unitary presidential republic , leader_title1 = President , leader_name1 = Kais Saied , leader_ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hafsid Dynasty
The Hafsids ( ar, الحفصيون ) were a Sunni Muslim dynasty of Berber descentC. Magbaily Fyle, ''Introduction to the History of African Civilization: Precolonial Africa'', (University Press of America, 1999), 84. who ruled Ifriqiya (western Libya, Tunisia, and eastern Algeria) from 1229 to 1574. History Almohad Ifriqiya The Hafsids were of Berber descent, although to further legitimize their rule, they claimed Arab ancestry from the second Rashidun Caliph Omar. The ancestor of the dynasty and from whom their name is derived was Abu Hafs Umar ibn Yahya al-Hintati, a Berber from the Hintata tribal confederation, which belonged to the greater Masmuda confederation of Morocco. He was a member of the council of ten and a close companion of Ibn Tumart. His original Berber name was "Faskat u-Mzal Inti", which later was changed to "Abu Hafs Umar ibn Yahya al-Hintati" (also known as "Umar Inti") since it was a tradition of Ibn Tumart to rename his close companions once they had ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Parks Of Tunisia
National may refer to: Common uses * Nation or country ** Nationality – a ''national'' is a person who is subject to a nation, regardless of whether the person has full rights as a citizen Places in the United States * National, Maryland, census-designated place * National, Nevada, ghost town * National, Utah, ghost town * National, West Virginia, unincorporated community Commerce * National (brand), a brand name of electronic goods from Panasonic * National Benzole (or simply known as National), former petrol station chain in the UK, merged with BP * National Car Rental, an American rental car company * National Energy Systems, a former name of Eco Marine Power * National Entertainment Commission, a former name of the Media Rating Council * National Motor Vehicle Company, Indianapolis, Indiana, USA 1900-1924 * National Supermarkets, a defunct American grocery store chain * National String Instrument Corporation, a guitar company formed to manufacture the first resonator gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Tunisia
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of World Heritage In Danger
The List of World Heritage in Danger is compiled by the United Nations Educational, Scientific and Cultural Organization (UNESCO) through the World Heritage Committee according to Article 11.4 of the World Heritage Convention,Full title: ''Convention concerning the protection of the World Cultural and Natural Heritage'' which was established in 1972 to designate and manage World Heritage Sites. Entries in the list are threatened World Heritage Sites for the conservation of which major operations are required and for which "assistance has been requested". The list is intended to increase international awareness of the threats and to encourage counteractive measures. Threats to a site can be either proven imminent threats or potential dangers that could have adverse effects on a site. In the case of natural sites, ascertained dangers include the serious decline in the population of an endangered or other valuable species or the deterioration of natural beauty or scientific value o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Heritage Sites
A World Heritage Site is a landmark or area with legal protection by an international convention administered by the UNESCO, United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for having cultural, historical, scientific or other form of significance. The sites are judged to contain "cultural heritage, cultural and natural heritage, natural heritage around the world considered to be of outstanding value to Human, humanity". To be selected, a World Heritage Site must be a somehow unique landmark which is geographically and historically identifiable and has special cultural or physical significance. For example, World Heritage Sites might be ancient ruins or historical structures, buildings, cities, deserts, forests, islands, lakes, monuments, mountains, or wilderness areas. A World Heritage Site may signify a remarkable accomplishment of humanity, and serve as evidence of our intellectual history on the planet, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UNESCO
The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. It has 193 member states and 12 associate members, as well as partners in the non-governmental, intergovernmental and private sector. Headquartered at the World Heritage Centre in Paris, France, UNESCO has 53 regional field offices and 199 national commissions that facilitate its global mandate. UNESCO was founded in 1945 as the successor to the League of Nations's International Committee on Intellectual Cooperation.English summary). Its constitution establishes the agency's goals, governing structure, and operating framework. UNESCO's founding mission, which was shaped by the Second World War, is to advance peace, sustainable development and human rights by facilitating collaboration and dialogue among nations. It pursues this objective t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichkeul National Park 0001
Lake Ichkeul ( ar, بحيرة اشكل) is a lake in northern Tunisia, located 20 kilometres (12 miles) to Bizerte, the northernmost city in Africa on the Mediterranean Sea. The lake and wetlands of Ichkeul National Park are an important stopping-over point for hundreds of thousands of migrating birds each year. Among the lake's visitors are ducks, geese, storks, and pink flamingoes. Dam construction on the lake's feeder rivers has produced major changes to the ecological balance of the lake and wetlands. History In the reign of the Hafsid dynasty, Lake Ichkuel was a reserve during the 13th century. It later became the property of the public domain in the early 20th century during French rule. Since 1980, it has been a UNESCO World Heritage Site. Because dams have sharply reduced the freshwater inflow to the lakes and marshes, the reedbeds, sedges, and other fresh-water plant species have been replaced with salt-loving plants. These changes have produced a sharp reduction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Conservation Union
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salinity
Salinity () is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). It is usually measured in g/L or g/kg (grams of salt per liter/kilogram of water; the latter is dimensionless and equal to ‰). Salinity is an important factor in determining many aspects of the chemistry of natural waters and of biological processes within it, and is a thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water. A contour line of constant salinity is called an ''isohaline'', or sometimes ''isohale''. Definitions Salinity in rivers, lakes, and the ocean is conceptually simple, but technically challenging to define and measure precisely. Conceptually the salinity is the quantity of dissolved salt content of the water. Salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, and sodium bicarbonate which dissolve into ions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyperaceae
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' with over 2,000 species. These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands or sedge meadows. Some species superficially resemble the closely related rushes and the more distantly related grasses. Features distinguishing members of the sedge family from grasses or rushes are stems with triangular cross-sections (with occasional exceptions, a notable example being the tule which has a round cross-section) and leaves that are spirally arranged in three ranks. In comparison, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reedbed
A reedbed or reed bed is a natural habitat found in floodplains, waterlogged depressions and estuaries. Reedbeds are part of a succession from young reeds colonising open water or wet ground through a gradation of increasingly dry ground. As reedbeds age, they build up a considerable litter layer that eventually rises above the water level and that ultimately provides opportunities in the form of new areas for larger terrestrial plants such as shrubs and trees to colonise. Artificial reedbeds are used to remove pollutants from greywater, and are also called constructed wetlands. Types Reedbeds vary in the species that they can support, depending upon water levels within the wetland system, climate, seasonal variations, and the nutrient status and salinity of the water. ''Reed swamps'' have 20 cm or more of surface water during the summer and often have high invertebrate and bird species use. ''Reed fens'' have water levels at or below the surface during the summer and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
