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Nguru Lake
300px, Yobe River catchment area showing location of the Hadejia-Nguru wetlands The Hadejia-Nguru wetlands in Yobe State in northern Nigeria, which include Nguru Lake, are ecologically and economically important. They are threatened by reduced rainfall in recent years, a growing population and upstream dam construction. Geography The wetlands lie in the Yobe-Komadugu sub-basin of the Chad Basin. They are formed where the Hadejia and Jama'are rivers meet lines of ancient sand dunes in a northeast-southwest alignment and break into numerous channels. They are drained by the Yobe River, which flows east towards Lake Chad. They lie between Sudanian Savanna to the south and the drier Sahel to the north. Some of the land is permanently flooded, while other parts are flooded only in the wet season (August and September). Annual rainfall ranges between 200–600 mm, during the period late May–September. At one time the wetlands may have covered up to 3,000 km2. Between 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramsar Convention
The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat is an international treaty for the conservation and sustainable use of Ramsar site, Ramsar sites (wetlands). It is also known as the Convention on Wetlands. It is named after the city of Ramsar, Mazandaran, Ramsar in Iran, where the convention was signed in 1971. Every three years, representatives of the contracting parties meet as the Ramsar Convention#Conference of the Contracting Parties, Conference of the Contracting Parties (COP), the policy-making organ of the wetland conservation, convention which adopts decisions (resolutions and recommendations) to administer the work of the convention and improve the way in which the parties are able to implement its objectives. COP12 was held in Punta del Este, Uruguay, in 2015. COP13 was held in Dubai, United Arab Emirates, in October 2018. List of wetlands of international importance The list of wetlands of international importan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palearctic
The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Siberian region; the Mediterranean Basin; the Sahara and Arabian Deserts; and Western, Central and East Asia. The Palaearctic realm also has numerous rivers and lakes, forming several freshwater ecoregions. The term 'Palearctic' was first used in the 19th century, and is still in use as the basis for zoogeographic classification. History In an 1858 paper for the ''Proceedings of the Linnean Society'', British zoologist Philip Sclater first identified six terrestrial zoogeographic realms of the world: Palaearctic, Aethiopian/ Afrotropic, Indian/ Indomalayan, Australasian, Nearctic, and Neotropical. The six indicated general groupings of fauna, based on shared biogeography and large-scale geographic barriers to migration. Alfred W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kafin Zaki Dam
The Kafin Zaki Dam is a controversial project to build a reservoir on the Jama'are River (also called the Bunga River in its upper reaches) in Bauchi State in the Northeast of Nigeria. Proposed dam and reservoir The proposed dam would be of zoned earthfill construction and would be 11 kilometres-long. It would be designed with the potential to install a 15 MW hydroelectric plant. The reservoir would have a storage capacity of 2,700 million cubic meters, and would be the second largest in Nigeria after the Kainji Dam. It would irrigate 120,000 hectares of arable land on which cash crops could be grown. Potentially the project would support production of one million tonnes of sugarcane annually and provide over one million jobs in industries related to agriculture. Project history The dam was first considered after the 1972-1974 drought in the Sahel, and during the Shehu Shagari regime in 1979-1982 a contract was awarded to Julius Berger Nigeria to build the dam. In 1984 the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Challawa Gorge Dam
The Challawa Gorge Dam is in Karaye Local Government Area of Kano State in the Northwest of Nigeria, about 90 km southwest of Kano city. It is a major reservoir on the Challawa River, a tributary of the Kano River, which is the main tributary of the Hadejia River. Construction The Challawa Gorge reservoir project was started by the Water Resources and Engineering Construction Agency of the Kano State Government, and was later handed over to the Federal Government who funded the project. The dam is owned and operated by the Hadejia-Jama’are River Basin Development Authority, a Federal agency. The dam was built by Julius Berger Nigeria in 1990 - 1992 using earth fill construction. It is 42 m high and 7.8 km in length. The dam has a full storage capacity of 930,000,000 and active storage of 904,000,000 m3. The direct catchment area is 3857 km2. Hydro power potential The dam was designed with the potential for hydro power generation in mind, and may have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiga Dam
The Tiga Dam is in Kano State in the Northwest of Nigeria, constructed in 1971–1974. It is a major reservoir on the Kano River, the main tributary of the Hadejia River. Description The dam was built during the administration of Governor Audu Bako in an attempt to improve food security through irrigation projects. The dam covers an area of with maximum capacity of nearly . Water from the dam supplies the Kano River Irrigation Project as well as Kano City. Downstream impact Several studies have shown that the dam has delivered negative economic value when its effect on downstream communities was taken into account. On completion of the dam the river flow downstream at Gashua in Yobe State fell by about per year due to upstream irrigation and by more than due to evaporation from the reservoir. A study published in 1999 concluded that farmers in the downstream floodplain had adapted their agriculture, helped by new technology, but the increased level of production might not b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drought
A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, and O. Zolina, 2021Water Cycle Changes In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1055–1210, doi:10.1017/9781009157896.010. This means that a drought is "a moisture deficit relative to the average water availability at a given location and season". A drought can last for days, months or years. Drought ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fulani
The Fula, Fulani, or Fulɓe people ( ff, Fulɓe, ; french: Peul, links=no; ha, Fulani or Hilani; pt, Fula, links=no; wo, Pël; bm, Fulaw) are one of the largest ethnic groups in the Sahel and West Africa, widely dispersed across the region. Inhabiting many countries, they live mainly in West Africa and northern parts of Central Africa, South Sudan, Darfur, and regions near the Red Sea coast in Sudan. The approximate number of Fula people is unknown due to clashing definitions regarding Fula ethnicity. Various estimates put the figure between 25 and 40 million people worldwide. A significant proportion of the Fula – a third, or an estimated 12 to 13 million – are pastoralists, and their ethnic group has the largest nomadic pastoral community in the world., Quote: The Fulani form the largest pastoral nomadic group in the world. The Bororo'en are noted for the size of their cattle herds. In addition to fully nomadic groups, however, there are also semisedentary Fulani —F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fisherman
A fisher or fisherman is someone who captures fish and other animals from a body of water, or gathers shellfish. Worldwide, there are about 38 million commercial and subsistence fishers and fish farmers. Fishers may be professional or recreational. Fishing has existed as a means of obtaining food since the Mesolithic period.Profile for the USA * inadequate preparation for emergencies * poor vessel maintenance and inadequate safety equipment * lack of awareness of or ignoring stability issues. Many fishers, while accepting that fishing is dangerous, staunchly defend their independence. Many proposed laws and additional regulation to increase safety have been defeated because fishers oppose them. Alaska's commercial fishers work in one of the world's harshest environments. Many of the hardships they endure include isolated fishing grounds, high winds, seasonal darkness, very cold water, icing, and short fishing seasons, where very long work days are the norm. Fatigue, physi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herder
A herder is a pastoral worker responsible for the care and management of a herd or flock of domestic animals, usually on open pasture. It is particularly associated with nomadic or transhumant management of stock, or with common land grazing. The work is often done either on foot or mounted. Depending on the type of animal being herd, the english language can give different professional names, for example, cowboy for cows, shepherd for sheep, or goatherd for goat. Terminology Herders may be distinguished by sex (''e.g.'', herdsman, herdswoman or herdboy) or by the type of livestock, for example camelherd, cowherd, duckherd, goatherd or shepherd. By country China Tibetan herding communities living in the Tibetan Plateau in the Sichuan Province of southwest China continued to graze herds on common lands even after the 1982 Household responsibility system. Several reasons have been given for the endurance of the traditional pastoral lifestyle: *complex topography p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quelea Quelea
The red-billed quelea (; ''Quelea quelea''), also known as the red-billed weaver or red-billed dioch, is a small—approximately long and weighing —migratory, sparrow-like bird of the weaver family, Ploceidae, native to Sub-Saharan Africa. It was named by Linnaeus in 1758, who considered it a bunting, but Ludwig Reichenbach assigned it in 1850 to the new genus ''Quelea''. Three subspecies are recognised, with ''Quelea quelea quelea'' occurring roughly from Senegal to Chad, ''Q. q. aethiopica'' from Sudan to Somalia and Tanzania, and ''Q. q. lathamii'' from Gabon to Mozambique and South Africa. Non-breeding birds have light underparts, striped brown upper parts, yellow-edged flight feathers and a reddish bill. Breeding females attain a yellowish bill. Breeding males have a black (or rarely white) facial mask, surrounded by a purplish, pinkish, rusty or yellowish wash on the head and breast. The species avoids forests, deserts and colder areas such as those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildlife Refuge
A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or other special interest, which is reserved and managed for purposes of conservation and to provide special opportunities for study or research. They may be designated by government institutions in some countries, or by private landowners, such as charities and research institutions. Nature reserves fall into different IUCN categories depending on the level of protection afforded by local laws. Normally it is more strictly protected than a nature park. Various jurisdictions may use other terminology, such as ecological protection area or private protected area in legislation and in official titles of the reserves. History Cultural practices that roughly equate to the establishment and maintenance of reserved areas for animals date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature Reserve
A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or other special interest, which is reserved and managed for purposes of conservation and to provide special opportunities for study or research. They may be designated by government institutions in some countries, or by private landowners, such as charities and research institutions. Nature reserves fall into different IUCN categories depending on the level of protection afforded by local laws. Normally it is more strictly protected than a nature park. Various jurisdictions may use other terminology, such as ecological protection area or private protected area in legislation and in official titles of the reserves. History Cultural practices that roughly equate to the establishment and maintenance of reserved areas for animals date bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
