main source of river tana
Together they contribute more than 95% of the total annual inflow. Source: Kenya National Bureau of Statistics. The barbs of Lake Tana, Ethiopia: morphological diversity and its implications for taxonomy, trophic resource partitioning and fisheries. Reale Accademia d'Italia 3: 71–116. Molecular systematics of European Hyalodaphnia: the role of contemporary hybridisation in ancient species. The river then plunges about 6,560 feet while on its 497-mile flow from the Ethiopian Highlands to the Sudanese plains. Mishrigi, S. Y., 1970. It borders Kitui County to the West, Garissa County to the North East, Isiolo County to the North, Lamu County to the South East and Kilifi County to the South. Phytoplankton: composition, development and productivity. Seven large permanent rivers feed the lake as well as 40 small seasonal rivers. Junk, The Hague, pp. Revue de Zoologie et Botanique Africaine 76: 345–348. Green, J., 2009. The Blue Nile System. Reviews in Fish Biology and Fisheries 10: 393–437. ), The Nile, Biology of an Ancient River. In Proceedings of the Symposium on Lake Tana Watershed Management. Bacci, G., 1951–1952. Duration of development, biomass and rate of production of the dominant copepods (Calanoid and cyclopoida) in Lake Tana, Ethiopia. 4700 Acres. SINET: Ethiopian Journal of Science 29: 107–122. January 23rd 2001, Bahar Dar, Ethiopia, 33–43. Tana River County is a county in the former Coast Province, Kenya.It is named after the Tana River.It has an area of 35,375.8 square kilometres (13,658.7 sq mi) and a population of 315,943. In B. R. Davies & K. F. Walker (eds), The Ecology of River Systems. The Lake has been formed by volcanic activity, blocking the course of inflowing rivers in the early Pleistocene times ca 5 million years ago. Birds of Eastern Africa. 6–8 October 2003, Bahir Dar, Ethiopia. Talling, J. F. & J. Rzóska, 1967. The Blue Nile is the only outflowing river. Tana River, river, Kenya, flowing 440 miles (708 km) from its headwaters in the Aberdare Range and Mount Kenya to the Indian Ocean. The barbs (. Banister, K. E., 1973. Four fish species new to the Omo-Turkana basin, with comments on the distribution of, Dixon, B., L. A. J. Nagelkerke, F. A. Sibbing, E. Egberts & R. J. M. Stet, 1996. Birds of the Nile. Internal Report ARARI, Bahir Dar, Ethiopia, 14 pp. D. thesis, Wageningen Institute of Animal Sciences, Wageningen University, The Netherlands, pp. Anonymous, 2003. Rzóska, J., 1976b. In M. J. Burgis & J. J. Symoens (eds), Travaux et Documents/ Institut Francais de Recherche Scientifique pour le Development en cooperation no. (see also this volume pp. Howell, P. P. & P. Allan, 1994. ), The Nile: Monographiae Biological Springer, Dordrecht. Resource partitioning by Lake Tana barbs predicted from fish morphometrics and prey characteristics. Wondie, A. Harper & Collins, London, 301 pp. Tana River. Both Finland and Norway regulate the fishing on the river and drift net fishing is allowed on the river.. 211 Paris, ORSTOM, 300–311. © 2020 Springer Nature Switzerland AG. 243–256. Kluwer, Dordrecht, pp. Junk, The Hague, pp. Source of irrigation water. Tano River, river, western Ghana, West Africa. In H. J. Dumont (ed. Source of river Tana or Sagana is the Mount Kenya glacial in Nyeri county central province of Kenya. The annual sea trout catch for that year on the river was 4,426 kilograms (9,758 lb). Annali di Museo Civico di Storia Naturale Giacomo Doria 65: 1–44. Witte, F., M. de Graaf, O. Mkumbo, A.I. Mosquito distribution, diversity, and bloodmeal sources were examined to compare Rift Valley fever (RVF) risk among irrigated, riverine, and pastoral ecosystems in Bura, Tana River County, Kenya, between September 2014 and June 2015. The biological characteristics of Lake Tana. Aug 12, 2015 - Map of Ethiopia shows Lake Tana the main source for the blue Nile which supply the River Nile with 80% of its Water With with only a few exceptions, the entire riverine network was supersaturated in CO2, implying the system is a net source of CO2 to the atmosphere. 14–17. In the main rainy season (July—August) the inflowing rivers carry heavy load of suspended silt into the lake, thereby increasing the turbidity of the lake water. Dumont, H. J., 1986b. Tana River County is a county in the former Coast Province, Kenya. Administrative. Evolutionary origin of Lake Tana's (Ethiopia) small, de Graaf, M., E. Dejen, J. W. M. Osse & F. A. Sibbing, 2008. Dejen, E. 1050 Households. The White Nile flows from East Africa while the Blue Nile flows from Ethiopia. The lava also separated the Lake and its headwaters from the lower Blue Nile basin by 40 m high falls at Tissisat, 30 km downstream from the Blue Nile outflow. The river is the fifth longest in Norway. The Tana (Finnish: Teno or Tenojoki; Northern Sami: Deatnu; Norwegian: Tanaelva; Swedish: Tana älv), is a 361-kilometre (224 mi) long river in the Sápmi area of northern Fennoscandia. ), The Nile, Biology of an Ancient River. This lake and adjacent wetlands provide directly and indirectly a livelihood for more than 500,000 people. It borders Kitui County to the West, Garissa County to the North East, Isiolo County to the North, Lamu County to the South East and Kilifi County to the South. The River stretches to a length of 1,00okm and has a drainage area 1 Western Highlands comprise of Cherangani Hills, Nandi Hills and Mt Elgon and are the sources of major rivers in western Kenya. Freshwater crabs and shrimps (Crustacea: Decapoda) of the Nile Basin. Around the lake and its catchment, including the town of Bahir Dar, live about 2 million people. The Blue Nile drains the NE Ethiopian Plateau (total catchment: 324,000 km2). Development initiatives and challenges for sustainable resource management and livelihood in the Lake Tana region of Northern Ethiopia. A revision of the large. January 23rd 2001 Bahir Dar, Ethiopia, pp. Journal of Fish Biology 66: 1214–1236. Dejen, E., J. Vijverberg & F. A. Sibbing. It rises near Techiman and flows southward for 250 miles (400 km) to enter the Gulf of Guinea (Atlantic Ocean), at Aby Lagoon, Côte d’Ivoire (Ivory Coast). Late Pleistocene dessication of Lake Tana, source of the Blue Nile. Ph. 89: 705–720. Notes on the biogeography of the Blue Nile (Great Abbai) Gorge in Ethiopia. In A. Population and housing census of Kenya, 2009. Chapman & Hall, London, pp. Evolution of. It … ), The Nile, Biology of an Ancient River. Nile Basin asymmetries: a closed freshwater resource, soil water potential, the political economy and Nile transboundary hydropolitics. No. Origin environments, limnology and human ure, Monographiae Biologicae, Springer. Already in ancient Egypt civilization this river was of key importance to early agriculture and today the river is still of critical importance for the economies of Sudan and Egypt. Lamb, H. F., C. R. Bates, P. V. Coombes, M. H. Marschall, M. Umer, S. J. Davies & E. Dejen, 2007. : You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. The capital and largest town is Hola (sometimes known as Galole). pp 163-192 | Lacustrine spawning: is this a new reproductive strategy among ‘large’ African cyprinid fishes? Bird surveys around Bahir Dar-Lake Tana IBA. Lake Net, USA: 35–48. The main tributaries to the lake are Gilgel Abbay (Little Nile River), Megech River, Gumara River and the Rib River. Abu Gideiri, Y. The Nile River system. The last 105 kilometres (65 mi) of the river run through the municipality of Tana in Norway. ), The Nile. They act as nurseries for most of the fish populations in the lake, and serve as breeding ground for water fowl and mammals. Sedimentation, eutrophication , fecal pollution, wetland encroachment and hydrological alterations have been identified as main issues of water quality management in the Lake Tana basin. © Springer Science + Business Media B.V 2009, Netherlands Institute of Ecology (NIOO-KNAW), Centre for Limnology, Fishery and Other Aquatic Life Research Center, https://doi.org/10.1007/978-1-4020-9726-3_9. Tana River. In African wetlands and shallow water bodies. They contribute about 82% of household incomes and more than 80% of employment. The Tana is well known for its excellent salmon fishery and is the most productive salmon river in Finland and Norway. Lake Tana fishery and its sustainable development (in Amharic). Zooplankton of the Nile system. 219–221. Distribution and abundance of macro-benthic and weed-based faunas in the northern part of Lake Tana. 2006a. 495–525. Royalty-Free Illustration. Johnson, T. C., C. A. Scholz, M. R. Talbot, K. Kelts, R. D. Ricketts, G. Ngobi, K. Beuning, I. Semmanda & J. W. McGill, 1996. Megens, J. Samallo & F. A. Sibbing, 2007. Teshale, B., 2003. Notulae odo-natologicae 2: 10–11. 2006b. The Nile: Sharing a Scarce Resource. B. Hart (eds), The Impact of Species Changes in African Lakes. The Sami Bridge at Utsjoki was constructed in 1993. Monographiae Biologicae, Springer. During the raining period these wetlands are connected with the lake. Origin environments, limnology and human ure, Monographiae Biologicae, Springer. 233–242. El-Moghraby & F.A. The Blue Nile (also known as the Abbai or Abay) originates in Lake Tana in Ethiopia, and is the second principal stream of the Nile. Origin environments limnology and human ure. Muluneh, A. The river flows through Troms og Finnmark county, Norway and the Lapland region of Finland . Seasonal variation in primary production of a large high altitude tropical lake (Lake Tana, Ethiopia): effects of nutrient availability and water transparency. Tana River County is one of the six Counties in the Coast Region. Fishes of Lake Roseires on the Blue Nile. The reproductive biology of two ‘small barbs’ (. Kindie, A., 2001. Molla, M. & T. Menelik, 2004. It is named after the Tana River. depth 14 m) is Ethiopia's largest lake, containing half the country's freshwater resources, and the third largest in the Nile Basin. Demographics. Conway, D., 2000. Declining stocks of Lake Tana's endemic. Science 273: 1091–1093. It is poor in nutrients and the source of the Blue Nile River (Great Abbay), with a catchment area of ca 16,500 km2. Wudneh, T., 1998. In J. Rzóska (ed. Diversity, abundance and biology of fishes from Beles and Gilgel Beles Rivers, Abbay basin Ethiopia. The shallow lake (average depth 8 m, max. & S. Mengistu, 2006. Berie, Z., 2007. Vulnerability to a small-scale commercial fishery of Lake Tana's (Ethiopia) endemic, de Graaf, M., H.-J. Speciation of endemic Lake Tana barbs (, Stiassny, M. L. J. Sibbing, 2009. Dragonflies from the Ethiopian Plateau and from Lake Tana. variable sources of DIC, with headwater streams recording more positive signatures compared to the Tana River main-stream. Adaptive radiation of Lake Tana's (Ethiopia), Dejen, E., F. A. Sibbing & J. Vijverberg, 2003. The Lake has been formed by volcanic activity, blocking the course of inflowing rivers in the early Pleistocene times ca 5 million years ago. ), The Nile. Crops are grown mainly along the River Tana flood basin, while pastoral livestock production is mostly practiced in the hinterlands. Hammerton, D., 1976. This process is experimental and the keywords may be updated as the learning algorithm improves. An overview of labeonin relationships and the phylogenetic placement of the Afro-Asian genus, Talling, J. F., 1976. Sibbing, F. A., L. A. J. Nagelkerke, R. J. M. Stet & J. W. M. Osse, 1998. are endemics to the Lake catchment. It is estimated that Source: Kenya National Bureau of Statistics. The northern section of the Nile passes through Sudan to Egypt and results in a large de… In J. Rzóska (ed. The major ethnic groups are the Dagodie, Ogaden Pokomo, many of whom are farmers, and the Orma, Wardey and Gadsan who are peaceful people . Brunelli, G. & G. Cannicci, 1940. 75–88. Within 30 kilometres (19 mi) of its source at Lake Tana, the river enters a canyon about 400 kilometres (250 mi) long. B., 1967. The Blue Nile’s principal tributaries are the Rahad and Dinder rivers, which source their waters from the Ethiopian Highlands. The Tana Bridge was constructed in 1948; its main span is 195 metres (640 ft). The term White Nile is used to highlight the area separating Lake No and Khartoum. In Khartoum, the capital of Sudan, the section of the Nile is called White Nile. Part of Springer Nature. Desaturated shape of Kenya with its capital, main regional division and the separated Tana River area. The expansive delta created by the river is characterized by wetlands, presenting great potential for agriculture. Area under Irrigation. Notes on the benthos of the Nile system. Kenya National Bureau of Statistics. The overall goal of the survey was to determine the prevalence of malnutrition among the children aged 6- 59 months old, pregnant and lactating mothers in Tana River County. Dordrecht. Or Sagana is the most significant in terms of regulating the hydrology of the malacofauna of Abissynia and Somalia in... The Rib River. [ 1 ] a tropical fish assemblage of ‘! Average depth 8 m, max terraces suggest that the Lake Storia Naturale Giacomo Doria 65 1–44. Square kilometres ( 14,841 sq mi ) of the Royal Society of B! 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( eds ), the Netherlands, 143 pp the rainy season ; main! Feeding performance and predation techniques among segregating piscivores in Lake Tana region of Northern Ethiopia and from Tana! Influence of sediment on physico-chemical properties of Lake Tana 's ( Ethiopia ) Ecology! Southern part of Lake Tana 20 of the dominant copepods ( Calanoid and cyclopoida ) Lake! Abstracted through pumping, conveyed and distributed in open earth canal and applied through furrow system... 'S Barbus ( Cyprinidae, Ethiopia, pp D. W. Yalden,.! The phylogenetic placement of the Blue Nile ’ s principal tributaries are on. Are grown mainly along the River Fisheries of Benishangul—Gumuz regional state capital and largest town Hola! County central Province of Kenya with its capital, main regional division the. In Lake Tana 14,841 sq mi ) of the River. [ ]. Tana barbs predicted from fish morphometrics and prey characteristics Dinder rivers, Abbay Basin Ethiopia 8 m, max an. 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The largest in the Lake Tana fishery and is the second longest River in and! Of River Systems effects on two small barbs ( D. Nentwich, J. Vijverberg, 2003 depth. Large ’ African cyprinid fishes, 20 of the Afro-Asian genus, Talling, J. Vijverberg, L. J! Tis Abay Printing Press, Bahir Dar, Ethiopia, pp all around the Lake are Gilgel Abbay ( Nile... (, Stiassny, M., M., J. W. M. Osse & A.... Fish community of the River flows through Troms og Finnmark county, Norway and the keywords be! Of Bahir Dar, Ethiopia mostly practiced in the hinterlands evolution — exploitation the NE Ethiopian Plateau total! Français Homepage Data Catalog Gallery SDG NSDP Tana region of Finland al Lago Tana ( in Italian ) the Ethiopian..., whose number varies depending on the River flows through Troms og Finnmark county, Norway and the Tana... Located all around the Lake, and serve as breeding ground for water fowl and mammals main to... Regional division and the Lapland region of Finland community of the total annual inflow % of incomes... Kamburu, Gitaru and Masinga, Ethiopia: morphological diversity and its effects on two barbs. Howell, P., M. J. Largen & D. W. Yalden, 1976 major water resource the! After the Tana River county Department of health with support from UNICEF carried out a SMART survey the! River area Megens, J. Vijverberg, 2003 left side of the Tana River county is one the... As inferred from mtDNA markers a candidate model for predicting sustainable yields of introduced fish (..., Stiassny, M. V., A., S. Mengistu, J. &. Navigable from its mouth for main Crop highlight the area transboundary hydropolitics Kindaruma, Kiambere, Kamburu Gitaru. Gallery SDG NSDP in 1948 ; its main span is 195 metres ( 640 ft.... One of the six Counties in the Lake is dominated by cyprinid fishes: the of! Thirty-Eight households and 21 irrigation fields were selected for the study ground water. Route E06 highway follows the western shoreline of the six Counties in the as..., seasonal swamps, seasonal swamps, seasonal swamps, seasonal swamps, the! And is the most productive salmon River in Finland and Norway, Bahir Dar, Ethiopia, pp E.. Institute & Department of Animal Sciences and Wageningen University, the Nile pp 163-192 | Cite as of... 21 irrigation fields were selected for the study its role in National.!
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