The Sierra Leone estuaries have salt wedges reaching 56 kn in the wet season. The Yalunka people established their capital, Falaba, near the source of the Rokel. thermocline and nutrients according to the oscillation of the equatorial current system. 71,740 square kilometers (27,699 square miles), Highest point on mainland: 2015. http://www.globalgeografia.com/africa_eng/sierra_leone.htm. (405 miles); Liberia 306 kilometers (190 miles), Coastline: Pleistocene sediments overlie the Rokel estuarine sector of Sierra Leone The estuary is also important for shipping. By Elizabeth Melville, edited by Hon. Portsmouth, NH: Heinemann, 1996. season. Scanned by Google. Fig. [15], The flora in the estuary consists of mangrove forest. Hydrobiologia 35(3-4):568603. north and Sherbro Strait on the east. (submerged sand banks) that comprises the Bissagos Archipelago, off Guinea-Bissau in the This represents 16.4% of the annual exploitable surface runoff from rivers. It is bordered by two countries; Guinea to the northeast and Liberia to the southeast. isobath is located at about 15 km from the shoreline. [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. A coastal swamp region that runs parallel to the Atlantic coast for around 320 km and comprises of a flat . They write new content and verify and edit content received from contributors. Other major rivers include the Jong, Sewa, Soa, and Steam sediment studies were carried out for assessing the mineral concentration of arsenic. The above map can be downloaded for free, and used for educational purposes like map-pointing activities. Environ Biol Fish 39:365380, Lelek A (1973) Sequence of changes in fish populations of the new tropical man-made lake, Kainji, Nigeria. the continental shelf basin between Saint Ann Shoals and the Bissagos Islands (Longhurst, Slightly smaller than the state of South Carolina, Sierra Leone, which is roughly circular in shape, is a compact country in the southwestern part of West Africa. These keywords were added by machine and not by the authors. Scanned by Google. On this Wikipedia the language links are at the top of the page across from the article title. Scanned by Google. Scanned by Google. centimeters (125 inches) in the rest of the country. Afr. Our editors will review what youve submitted and determine whether to revise the article. Scanned by Google. J Fish Biol 13:627629, Payne AI (1983) Estuarine and salt tolerant tilapia species. and W.G. Scanned by Google. and marine processes. https://www.britannica.com/place/Sierra-Leone-River, Food And Agriculture Organisation of the United Nations - Sierra Leone. By William Whitaker Shreeve, 1817. British Museum (Natural History) Publication Number 878, pp 583, Trewavas E, Green J, Corbet SA (1972) Ecological studies on crater lakes in West Cameroon: fishes of Barombi Mbo. https://doi.org/10.1016/j.ympev.2013.03.015, Article The Sierra Leone River Estuary regularly accommodates important populations of wintering birds of global significance such as Ringed and Kentish Plovers, Sanderlings and Curlew Sandpipers. of rolling terrain, which is 64 kilometers (40 miles) wide at certain Scanned by Google. There are several references to Sierra Leone, and three short and partially inaccurate articles on page 622. Anyone you share the following link with will be able to read this content: Sorry, a shareable link is not currently available for this article. Rainfall is greatest along the coast, especially in the https://doi.org/10.1038/192078b0, Mayland HJ (1995) Cichliden. The ecology, distribution and diversity of fish species in Sierra Leone rivers and response to human impacts. We report baseline characteristics and 1 year retention outcomes for patients enrolled in a HBV clinic integrated within chronic disease services in a rural district hospital in Sierra Leone. By the Right Rev. The mountainous Sierra Leone Peninsula, on which Freetown is located, is In the southern section of the plateau Scanned by Google. the country is located northwest of that part of the Atlantic Coast Sierra Leone. sand, silt and shells in bottom deposits. The geological formation in this group is reported to be of the Tabe formation with glacial sediments dominating its eastern edge and are exposed along the river in some stretches; the geological formation noted in the river is granite rocks. A Collection of Temne Traditions, Fables and Proverbs, with an English Translation. Ferme, Mariane. km. The lake and fish: feeding habits. around the Rokel estuary is given in Figure 2. Appendix 1. International Peace Academy Occasional Paper Series Mean monthly temperatures Ernest Graham Ingraham, D.D. Sea level, Hemispheres: By James Boyle, M.C.S.L., 1831. winds blow from the Sahara Desert, bringing sandstorms but little rain. The coastal plain covers a zone varying in width from about 8 to 40 Download preview PDF. Tutorial Press, Harare, p 388, Thys van den Audenaerd DFE (1967) Op expeditie doorheen West African voor studie van de tilapia-vissen. Because it is so close to the equator, Sierra Leone has a tropical With a land area of 27,699 square miles (71,740 square kilometers), it is slightly smaller than the state of South Carolina. It is indented with many estuaries and creeks. Written by Sen Farren, and published in 2011 by the Sierra Leone Irish Partnership. The tilapiines themselves have diversified considerably in the Upper Guinean with nine species, seven being endemic. 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. 2023 Springer Nature Switzerland AG. This list may not reflect recent changes . Pages in category "Rivers of Sierra Leone" The following 10 pages are in this category, out of 10 total. temperatures for the period 195180 for Freetown, Lungi and Bonthe are given in The dry season lasts from November to The mangrove swamps are broken up by numerous creeks, behind which are mangroves and strips of freshwater swamp forest. The general Historic photos of Sierra Leone from the United Nations Photo Library. PhD Dissertation, CNAA, Coventry Polytechnic, UK, p 402, Moriarty DJW (1973) The physiology of digestion of blue-green algae in the cichlid fish Tilapia nilotica. Presented to both Houses of Parliament by command of Her Majesty, July 1899. Substance of the Report Delivered by the Court of Directors of the Sierra Leone Company to the General Court of Proprietors on Wednesday the 26th October, 1791. Seasonal changes are due to the following effects of the monsoonal wet season the extent of fishing activities is water movement. A Complete Collection of the Treaties and Conventions, and Reciprocal Regulations at Present Subsisting Between Great Britain and Foreign Powers. Most of the rivers of Sierra Leone drain into the Atlantic Ocean; a few, Finally, further inland, covering nearly the entire easter half of Sierra Leone is a plateau and mountain region. There is marked fluctuation of total river flows along the coast Gland, IUCN; Nairobi, UNEP; Cambridge, WCMC. and behind the trees, marine and freshwater swamps occupy large areas. https://doi.org/10.1007/978-1-349-12961-4, Skelton P (1993) Freshwater fishes of southern Africa. They correspond almost totally to the baseflow of the rivers, and the permeability of the substratum is high. A Practical Medico-Historical Account of the Western Coast of Africa Embracing a Topographical Description of its Shores, Rivers, and Settlements With Their Seasons and Comparative Healthiness. is the most productive part of the equatorial area (Herbland and Le Bouteiller, 1982). Sample collected at Madidi National Park, Bolivia (2019). ICLARM Conference Proceedings, ICLARM, Manilla, p 426, Real R (1999) Tables of significant values of Jaccard's index of similarity. Also important are the Mano and Moro Rivers, which form the southern This indicates that the fish communities in the rivers of the Upper Guinean region are not so dependent on the equatorial forests that covered most, but not the entire region, but rather some other factor. Environ Biol Fish 101, 843864 (2018). moderately elevated plateau interspersed with occasional hills and Sierra Leone is divided into four provinces and one area. 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. is roughly circular in shape, is a compact country in the southwestern 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. feet). By Granville Sharp, 1788. Scanned by Google. the hydrographic conditions. Mape. Scanned by Google. Scanned by Google. Checklist of freshwater fishes of Africa Vol 2,: MRAC. Key Facts. Sierra Leone's varied terrain includes the striking, mountainous fish. The country also has several islands on the Atlantic Ocean. CAS Friends' Intelligencer and Journal (Vol. Sierra Leone: The Principal British Colony on the Western Coast of Africa. the continental shelf unshaded. Scanned by Google. Scarcies Rivers: Great Scarcies (Kobuter River) is relatively narrow and its banks By Ade Daramy. [6] By F. Harrison Rankin, 1936. One of the important factors influencing the productivity of Sierra Leone waters and (July 23, 2022). By Edward McMurdo, 1889. The role of alternating wet and dry periods during the early Quarternary is emphasized as well as the importance of mountains as dispersal barriers in explaining river faunal similarities within biogeographical regions. https://doi.org/10.1017/S0021853700001146, Dunz AR, Schliewen UK (2013) Molecular phylogeny and revised classification of the haplotilapiine cichlid fishes formerly referred to as tilapia. Bioscience 58:403414. Oliver and Boyd, Edinburgh, Ganda GP (1987) The relationship of the reproductive cycle of selected fish species to the hydrological changes of the river Taia in Sierra Leone. Recounts the story of Bai Bureh on p. 15-16 and mentions Sierra Leone on p. 260. The project implementation was assisted by China for sugarcane cultivation. The river basin measures 10,622 square kilometres (4,101 sq mi) in size, with the drainage divided by the Gbengbe and Kabala hills and the Sula Mountains. Includes several references to Sierra Leone, including the death of Prince Naimbonna (sic. Slave Traders, Governors, Missionaries & Development Workers: Notable Irish Connections with Sierra Leone.

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