Hobson, 1902. Part of Springer Nature. This Africa protected areas related article is a stub. The cyclothem (series of beds deposited) in Sierra Leone The hydrographic regime of Sierra Leone waters is characterized by a relatively 3.3 in Chapter 3 summarizes the rainfall of the region. The original link is to Harvard University Department of Economics. Go to top. In: Pullin RSV, Lowe-Mconnell RH (eds) The biology and culture of tilapias. Ann. [6] Mangrove species recorded are Rhizophora, Avicennia, Laguncularia, and Conocarpus, which cover an area of 34.23 hectares (84.6 acres). The heaviest rainfall occurs in A series of collections and surveys provided the basis for a detailed account of the distribution and ecological characteristics of the fish species assemblages in the rivers of Sierra Leone which, International Letters of Natural Sciences, This study was conducted in the lower, middle and upper reaches of the Rokel/Seli River, Northern Sierra Leone. Sierra Leone River, river, an estuary on the Atlantic, in western Sierra Leone. The soils of the mangrove were characterized particularly in terms of their chemical properties: Phosphorus, acidity, salinity and Sulphur status (Sylla, 1994).Because of the . clays in quiet waters outside the estuary, and this is then overlain by silty sand and CAS which extends 48 km eastward. The continental shelf MRAC, Tervuren ORSTOM, Paris, p 410, Daget J, Gosse JP, Thys van den Audenaerd DFE (1986a) CLOFFA 2. the extent of fishing activities is water movement. Bioscience 58:403414. Guinea, Liberia. Global Resource Information Database and United Nations. waters. There are many projects developed in the river basin which derive their water supply requirements from this river. medium sand. By The Rev. The The eight species of palaearctic migrant waders recorded are:[1], Coordinates: .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}833N 1248W / 8.55N 12.80W / 8.55; -12.80. Mol Phylogenet Evol 68:6480. J zool Lond 171:2539, Article Landbuch-Verlag, Hannover, McCarton B (1987) The population dynamics of some species of fish in the river Taia. The sedimentary sequence of the coastline is a response to interaction of fluvial the coast just south of the peninsula. [6] The river has low. [8], The iron ore mining at Marampa is dependent on pumped water supply from the river. The estuary is also important for shipping. Culture of Sierra Leone - history, people, clothing, traditions, women The general estuaries whose river channels, like that of the Sierra Leone River, Colonies and Slaves: Relating to Colonies; Africans Captured; Jamaica; Slave Emancipation; Slave Trade. The trends in rainfall pattern for Freetown, Lungi and There is an eastward current, the Equatorial Counter Current (ECC) embedded between The Underneath of Things: Violence, History, and the Everyday in IUCN, London. harmattan The second physical region is the Sierra Leone Peninsula which is covered by wooded mountains with elevation reaching up to 860 m, and running parallel to the coastal swamps for around 40 km. ODA, London, p 362, Payne AI, Baneh D, Conteh J (2009) Fish survey of the Gola Forest reserve. By Ade Daramy for Sierra Leone's 55th independence anniversary, 27 April 2016. The cichlids in Barombi Mbo probably evolved there from two or three ancestral populations and now show clear ecological separation in their feeding and breeding, and the problem of speciation within the lake is of particular interest. The Portuguese in Africa, 1415-1600 | Essay | The Metropolitan Museum Sierra Leone, or the Liberated Africans, in a Series of Letters from a Young Lady to Her Sister in 1833 and 34, The History of Portugal from the Reign of D. Diniz to the Reign of D. Alfonso V., Volume II. By Tristan Reed and James A. Robinson, 2013. Archiv Fur Hydrobiologie 71:381420, Leveque C (1997) Biodiversity dynamics and conservation: the freshwater fish of tropical Africa. Tervuren ORSTOM, Paris, p 520, Daget J, Gosse JP, Thys van den Audenaerd DFE (1986b) CLOFFA 3. Fig. Sea level, Hemispheres: The clays deposited in tidal flats are subsequently invaded by 958 kilometers (595 miles) total boundary length; Guinea 652 kilometers Sierra Leone is divided into four provinces and one area. An Essay on Colonization, particularly applied to the Western Coast of Africa, with some free thoughts on cultivation and commerce; also brief descriptions of the colonies already formed, or attempted, in Africa, including those of Sierra Leona and Bulama. By Tobias George Smollett, 1788. Substance of the Report Delivered by the Court of Directors of the Sierra Leone Company to the General Court of Proprietors, on Thursday the 19th March, 1798. The city of Bonthe is located on this island. This is a preview of subscription content, access via your institution. Sierra Leone - Encyclopedia of the Nations Please refer to the appropriate style manual or other sources if you have any questions. Scanned by Google. XXIX. Scanned by Google. climate; temperatures stay fairly constant throughout the year. Pap. The estuary of the Scanned by Google. Scanned by Google. Environ Biol Fish 39:365380, Lelek A (1973) Sequence of changes in fish populations of the new tropical man-made lake, Kainji, Nigeria. Starting on page 367 a critical review of John Matthews' book "A Voyage to the River Sierra-Leone." country, has elevations ranging from roughly 304 meters (1,000 feet) to Atlantic Ocean. upwelling areas of North-West Africa and central Gulf of Guinea by a complex of shoals The project, implemented in 1980, is located at Magbass on the banks of the river and has an irrigation command of 880 square kilometres (340sqmi). sector between Senegal and Liberia and this has biological consequences on fisheries of the hydrographic conditions. (African Issues Series). There are several major rivers which influence the hydrographic conditions along the Bull. rainfall annually, compared to an average of approximately 315 and marine processes. The country also has several islands on the Atlantic Ocean. Some of the major ones like Rokel River, Taia River, Moa River, and Sewa River have been marked on the map. It drains a 4,100-sq-mi (10,620-sq-km) basin on its 250-mi (400-km) southwesterly course toward the Atlantic, and empties into the estuary of the Sierra Leone River (q.v.). It is formed by the Bankasoka River and Rokel River and is between 4 and 10 miles wide (6-16 km) and 25 miles (40 km) long. The The ecology, distribution and diversity of fish species in Sierra Leone Sierra Leone has no territories or dependencies. It is formed by the Bankasoka River and Rokel River and is between 4 and 10 miles wide (616km) and 25 miles (40km) long. Additionally, there are effects of the equatorial undercurrent (Lomonosov Current) which Scanned by Google. PDF copy of the book printed for Sierra Leone's Golden Jubilee, 27 April 2011. Steam sediment studies were carried out for assessing the mineral concentration of arsenic. J Zool (Lond) 167:4195, Welcomme RL (1985) River fisheries. Gives the history of Sierra Leone's chiefdoms and their ruling houses. http://www.globalgeografia.com/africa_eng/sierra_leone.htm The mean Appendix 1. Slightly smaller than the state of South Carolina, Sierra Leone, which While every effort has been made to follow citation style rules, there may be some discrepancies. Types of rivers and their characteristics 5.1 Introduction The southern African region can be split into the well-watered tropical North, drained by major rivers such as the Zambezi and Okavango, and the water limited South, of which the western side is truly arid, and the eastern and This is a list of rivers in Sierra Leone. (accessed April 10, 2003). however, terminate at inland lakes. Part of Springer Nature. Substance of the Report Delivered by the Court of Directors of the Sierra Leone Company to the General Court of Proprietors, on Thursday the 27th March 1794. The reported maximum and minimum discharge at Magbass, one of the three stations, are 1,905 cubic metres (67,300cuft) and 2 cubic metres (71cuft) respectively. - 103.146.177.212. As for the open continental shelf area, the mean monthly temperature Hirsh, John. Fighting for the Rain Forest: War, Youth, and Resources in Sierra Scanned by Google. Longhurst (1958) considers the The oceanographic factors affecting the hydrographic regime, the estuaries and Bumbuna hydroelectric project, Freetown; MRAG, London. This page was last updated on February 24, 2021, All maps, graphics, flags, photos and original descriptions 2023 worldatlas.com, Moments In History That Were The Most Terrible Mistakes, The 7 Best Small Towns In Nevada To Chill Out, 11 Coolest Small Towns in Washington for a Summer Vacation, The Best Small Towns in the Gulf Coast To Chill Out. North and the shoals of Saint Ann to the South. Figure 2 Diagramatic representation of present-day distribution of sediments Checklist of freshwater fishes of Africa Vol 4, MRAC, Tervuren ORSTOM, Paris: pp 740, Dorward DC, Payne AI (1975) Deforestation, the decline of the horse and the spread of tsetse fly and trypanosomiasis (ngaana) in nineteenth century Sierra Leone. Misc Zool 22:2940, Reynolds JD (1970) Biology of the small pelagic fishes in the new Volta Lake in Ghana, Pt 1. Intertidal flats containing sediments of grain size varying from clay to By James McQueen, 1825. 40 kilometers (25 miles) long and about 16 kilometers (10 miles) wide. Figure 1 The West African coastline between Liberia and Guinea with By S. W. Koelle, Church Missionary, 1854. Fig. There are three major island groups off the coast of Sierra Leone: the and behind the trees, marine and freshwater swamps occupy large areas. By his granddaughter, Viscountess Knutsford, 1900. Freetown at the mouth of the river estuary, "Sierra Leone Estuary: Proposed Ramsar Site", United Nations Environment Programme: Division of Environmental Policy Implementation 2007, https://en.wikipedia.org/w/index.php?title=Rokel_River&oldid=1126774446, All Wikipedia articles needing clarification, Wikipedia articles needing clarification from July 2013, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 11 December 2022, at 04:47. Scanned by Google. 4B), butas it is cutintotheBullomSeriesslumpingof material makesaccurateheightdeterminationdifficult. The river is also used by boats that carry vegetables to the Freetown market. The Rokel River originates in the Loma and on the South and West by Sherbro Island, could be referred to as a sound or strait By Thomas Eyre Poole, 1850. ) There is a considerable Rivers of Sierra Leone: Sierra Leone River, Mano River, Moa River By Sir Edward Hertslet, C.B., 1880. Pages in category "Rivers of Sierra Leone" The following 10 pages are in this category, out of 10 total. Unable to display preview. Sierra Leone: Diamonds and the Struggle for Democracy. is the most productive part of the equatorial area (Herbland and Le Bouteiller, 1982). In the North, the 50-m isobath occurs at Apart from a mountainous peninsula some 45 km long, the coastal zone is flat with a fringing mangrove swamp extending 30 km inland. The great majority of southern Africas water resources are riverine. The Critical Review, Or, Annals of Literature, Volume 65. The environmental impacts on the downstream users and disposal of tailings from the mining operations have not been addressed. Journal of a Voyage from Plymouth to Sierra Leone, ed. Corrections? are lined with mangroves. - 54.36.126.202. These waters are more or less permanently warm and with low salinity levels. The continental shelf has an estimatedarea of 25 000 km2 . Published in 1788. There are several references to Sierra Leone, and three short and partially inaccurate articles on page 622. Source book for the inland fishery resources of Africa Vol. 2 Some shifting openings in this barrier allow water from the Gallinas and Sulima to reach J Fish Biol 27(Supplement A):263277, Payne AI, Wakeford RC (2006) Bumbuna hydroelectric project, baseline fish survey final report. Cambridge University Press, Cambridge, p 438, Leveque C, Paugy D (1984) Guide des Poissons dEau douce de la zone du Programme de Lutte Contre lOnchocercose. pp 51, Payne AI, Wakeford RC, Ndomahina TE (2010) Fish distribution and zonation along a tropical African river basin, the Rokel/Seli river, Sierra Leone, West Africa. Scanned by Google. Bishop of Sierra Leone, 1894. Includes discussions of commerce and conflict in Sierra Leone and the origin and history of the Fulani people. Institute for Freshwater Studies, Rhodes University, Grahamstown, South Africa, Department of Zoology and Entomology, University of Natal, Pietermaritzburg, South Africa, Division of Water Technology, Council for Scientific and Industrial Research, Pretoria, South Africa, You can also search for this author in The 2,950 square kilometres (1,140sqmi) of the Sierra Leone River estuary is classified as a wetland of international importance Ramsar Convention in the west of Sierra Leone. https://doi.org/10.1038/192078b0, Mayland HJ (1995) Cichliden. https://doi.org/10.1007/s10641-018-0742-2, https://doi.org/10.1017/S0021853700001146, https://doi.org/10.1016/j.ympev.2013.03.015, https://doi.org/10.1007/978-1-349-12961-4. Sierra Leone Peninsula; a zone of low-lying coastal marshland along the Guinea Current (GC) which runs along the West African coast from Senegal to the Bight of as is indicated in Table 2. As observed on the physical map above, it has a coastline on the Atlantic Ocean. Scanned by Google. As observed on the physical map above, it has a coastline on the Atlantic Ocean. A series of collections and surveys provided the basis for a detailed account of the distribution and ecological characteristics of the fish species assemblages in the rivers of Sierra Leone which comprises a central part of the Upper Guinean eco-region. J Afr Hist XVI:239256. Sierra Leone exhibits a number of depositional and erosional features (that is, sandy The area of the continental shelf up to Ferme, Mariane. A coastal swamp region that runs parallel to the Atlantic coast for around 320 km and comprises of a flat . the sea. extending from May to October: high river discharges, reduced surface water salinities, By Ade Daramy. Other major rivers include the Jong, Sewa, Soa, and The estuary is also important for shipping. Convention ORSTOM-OMS, Paris, p 393, Leveque CE, Paugy D (1999) Les poisons des eaux continentales africaines: diversite, ecologie, utilisation par lhomme. Presented to both Houses of Parliament by command of Her Majesty, July 1899. (November-April) and the rainy season (May-October). Republic of Sierra Leone, Area: Present State of the Colony of Sierra Leone, Being Extracts of Recent Letters from Hannah Kilham. These keywords were added by machine and not by the authors. The project implementation was assisted by China for sugarcane cultivation. to cross the channel. By Edward McMurdo, 1889. Scanned by Google. (PDF) Freshwater fishes of Sierra Leone and Liberia: annotated silty clays at the mouth of the estuary (Strasser-King, 1979). [11] The site is bounded by Cape Point on the western side of the Freetown, by the Bunce River on one of its banks, and the Tagrin Point where areas of the Rokel joins at the southern end of its mouth. Our editors will review what youve submitted and determine whether to revise the article.
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