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. There is marked fluctuation of total river flows along the coast By S. W. Koelle, Church Missionary, 1854. Presented to both Houses of Parliament by Command of Her Majesty, 1860. The coastal plain covers a zone varying in width from about 8 to 40 Most of the small lakes in Sierra Leone are located in the south. https://doi.org/10.1007/978-1-349-12961-4, Skelton P (1993) Freshwater fishes of southern Africa. https://doi.org/10.1007/s10641-018-0742-2, DOI: https://doi.org/10.1007/s10641-018-0742-2. The notable cascade in the river is known as the Bumbuna water falls where the river drops by 15 metres (49ft) providing for building a hydroelectric project. ICLARM Conference Proceedings, ICLARM, Manilla, p 426, Real R (1999) Tables of significant values of Jaccard's index of similarity. Checklist of freshwater fishes of Africa Vol 3, MRAC, Tervuren ORSTOM, Paris: pp 273, Daget J, Gosse JP, Thys van den Audenaerd DFE (1991) CLOFFA 4. Scanned by Google. PubMedGoogle Scholar. Includes discussions of commerce and conflict in Sierra Leone and the origin and history of the Fulani people. prevailing winds from the southwest monsoon characterize the rainy (November-April) and the rainy season (May-October). The fuma1 lists are based on the literature dafa and on the collections of. volume101,pages 843864 (2018)Cite this article. Scanned by Google. Leone Sample collected at Madidi National Park, Bolivia (2019). Other major rivers include the Jong, Sewa, Soa, and a depth of 200 m is about 27 500 km2. North and the shoals of Saint Ann to the South. Colonies and Slaves: Relating to Colonies; Africans Captured; Jamaica; Slave Emancipation; Slave Trade. Sierra Leone River, river, an estuary on the Atlantic, in western Sierra Leone. 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. Scarcies Rivers: Great Scarcies (Kobuter River) is relatively narrow and its banks C.F. 1830, includes information and correspondence on the Courts of Mixed Commission in Freetown. 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. The Gallinas and Sulima Rivers: The strong surf around the estuaries of the Institute pour Recherche pour la Devloppment, Paris, p 521, Loiselle PV (1979) A revision of the genus Hemichromis Peters 1858 (Teleostei: Cichlidae). Sierra Leone is divided into four provinces and one area. Rokel River and its tributaries are defined as the "Rokel River Group" for geological study. By Thomas Eyre Poole, 1850. The estuary is also important for shipping. Scanned by Google. (Watts, 1958). sand, silt and shells in bottom deposits. There are oil and gas reserves under the ocean floor off the coast of CAS Bull. It is also reported that its orogeny belongs to the Pan African thermo-tectonic age of about 550 Ma. This river is tidal and during the rainy season it rises about 2.7 m. Sierra Leone River: Sierra Leone River is merely an arm of the sea receiving waters of several tributaries: Kumrabe Creek (7.2 km north-eastward of Tagrin Point), and Bunce River (4.8 km south of Tagrin Point). Recounts the story of Bai Bureh on p. 15-16 and mentions Sierra Leone on p. 260. Flag. Ian Payne, A. Environmental Biology of Fishes IUCN, London. Hovercraft, or helicopter services are no longer running. An Interesting Narrative of a Mission Sent to Sierra Leone in Africa by the Methodists in 1811; to which is prefixed an account of the rise, progress, disasters and present state of that colony, the whole interspersed with a variety of remarkable particulars. In the southern section of the plateau Mrs. Norton, 1849. 4B), butas it is cutintotheBullomSeriesslumpingof material makesaccurateheightdeterminationdifficult. Iron ore and alluvial gold mining began in the late 1920s and early 1930s, while the Bumbuna Falls hydroelectric project is underway. 480 g cal cm-2 day -1 and 69 g cal cm-2 day -1 for the dry and wet season, respectively. the North and South Equatorial Currents. By Robert Thorpe, 1815. Mangrove swamps in upper intertidal and low supratidal zones; with black and Longman Group Limited, London, p 284, Matthes H (1961) The feeding habits of some central African freshwater fishes. The Sierra Leone coastline stretches for about 506 km. Wadstrom, 1794. A coastal swamp region that runs parallel to the Atlantic coast for around 320 km and comprises of a flat . (Strasser-King, 1979). By John Walker, 1798. By William Latimer Neville, 1858. isothermal because of wind-induced mixing. 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. The sedimentary sequence of the coastline is a response to interaction of fluvial Appendix 1. The average annual rainfall for Freetown for the period Let us know if you have suggestions to improve this article (requires login). 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. This book discusses the diversity and variability of freshwater ecosystems in tropical Africa, the role of fish biodiversity, and the threats to fish biodiversity. 3.3 in Chapter 3 summarizes the rainfall of the region. Understanding is probably now sufficient to allow a proper assessment of the conservation status of these previously poorly known species to be carried out. kilometers (270 miles), the Rokel is the longest river in the country. Scanned by Google. J Zool Lond 176:247269, Payne AI (1976) The determination of age and growth in Barbus liberiensis from the scales. Go to top. It is suggested that this factor is probably the rainfall and discharge pattern as evidenced by the coincidence, almost exactly, of the Upper Guinean with the 2500mm per year isohyet. The While every effort has been made to follow citation style rules, there may be some discrepancies. ), 1794. to cross the channel. muddy and sandy areas of the continental shelf have similar salinity ranges. The ecology, distribution and diversity of fish species in Sierra Leone Abstract. The Underneath of Things: Violence, History, and the Everyday in A coastal swamp region that runs parallel to the Atlantic coast for around 320 km and comprises of a flat, frequently flooded plain with width ranging from 8 to 40 km. The continental shelf has an estimatedarea of 25 000 km2 . Sierra Leone Maps & Facts - World Atlas http://www.globalgeografia.com/africa_eng/sierra_leone.htm The West African country of Sierra Leone occupies an area of 71,740 sq. . MRAG Ltd, London, p 77, Payne AI, McCarton B (1985) Estimation of population parameters and their application to the development of fishery management models in two African rivers. (1990) which was somewhat extended and refined from taxonomic . temperature is about 27C (81F) on the coast and almost as The needs for conservation are considered and the particular need for genetic conservation and the preservation of the riverain forests emphasised. Office for Disaster Risk Reduction. (July 23, 2022). The oceanographic factors affecting the hydrographic regime, the estuaries and Most of the rivers of Sierra Leone drain into the Atlantic Ocean; a few, Fig. IFAN 28(Ser A (3)):10411063, MRAG, 18 Queen Street, London, W1J 5PN, UK, You can also search for this author in Tervuren ORSTOM, Paris, p 520, Daget J, Gosse JP, Thys van den Audenaerd DFE (1986b) CLOFFA 3. 3 CLIMATE part of West Africa. Articles by various contributors, including information on Sierra Leone, from page 481, 1795. Gallinas and Sulima Rivers and the currents of these two rivers have formed a sand By C.B. dry season the salinity of the continental shelf reaches a value of 35/00, whereas it In: Inland Waters of Southern Africa: An Ecological Perspective. Mol Phylogenet Evol 68:6480. Outline Map. 958 kilometers (595 miles) total boundary length; Guinea 652 kilometers P. 272: "There is no protectorate, nor anything analogous thereto, exercised over any part of the country." Historic photos of Sierra Leone from the United Nations Photo Library. By Major Alexander Gordon Laing. They correspond almost totally to the baseflow of the rivers, and the permeability of the substratum is high. These waters are more or less permanently warm and with low salinity levels. The dynamics of fish populations in two African rivers are being investigated with a view to developing fishery management models for tropical non-floodplain rivers. Sierra Leone Peninsula; a zone of low-lying coastal marshland along the By the Court of Directors, Sierra Leone Company, 1798. Sierra Leone's varied terrain includes the striking, mountainous Also important are the Mano and Moro Rivers, which form the southern Omissions? The present-day coastline of This alluvial gold mining operation has been described as environmentally destructive as forest denudation for the purpose of mining caused extensive erosion of the hills and consequent sedimentation of the river and its tributaries. PubMedGoogle Scholar, Allanson, B.R., Hart, R.C., OKeeffe, J.H., Robarts, R.D. [6] Inland Waters of Southern Africa: An Ecological Perspective pp 6581Cite as, Part of the Monographiae Biologicae book series (MOBI,volume 64). of several tributaries: Kumrabe Creek (7.2 km north-eastward of Tagrin Point), and Bunce 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. Geophysical monograph, no. List of rivers of Sierra Leone - Simple English Wikipedia, the free By Tristan Reed and James A. Robinson, 2013. PDF 5. Types of rivers and their characteristics - Springer The above map can be downloaded for free, and used for educational purposes like map-pointing activities. contour (isobath), respectively. MSC theisis, Coventry Polytechnic, UK, p 209, Henderson HF, Welcomme RL (1974) The relationship of yield to morpho-edaphic index and numbers of fishermen in African inland fisheries. The occurrence of fish species by major river in Sierra Leone was finally put together as a checklist for the country by Paugy et al. These administrative divisions are further subdivided into 16 districts that include 14 rural districts, and the remaining two districts constitute the national capital of Freetown. Loma Mansa (1,948 meters/6,391 feet), Lowest point on land: The avifauna in the area consists of 10,000 birds of 36 species (1995 record). RAISED BEACHES IN SIERRA LEONE The heightof the clifffootbeneaththe main raisedbeach lies between35 feet and 40 feet(Fig. [14] The Magbass Irrigation Project was implemented downstream of the dam. [3] The area is mainly mangrove swamps but also includes tidal freshwater swamp forests.[4]. Starting on page 367 a critical review of John Matthews' book "A Voyage to the River Sierra-Leone." Ser. As observed on the physical map above, it has a coastline on the Atlantic Ocean. [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. It is indented with many estuaries and creeks. The Rokel River originates in the Loma The narrowing of the estuary near Freetown has created a particularly strong tidal scour (up to six knots), which keeps the deepwater channel free from any large buildup of silt.
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