Sierra Leone Bordering Countries: Ann. The thermocline and the continental shelf are delimited by the 25C isothermal and 40-m Presented to both Houses of Parliament by Command of Her Majesty, 1860. Rev Hydrobiol Trop 23:329350, Paugy D, Leveque C, Teugels GG (2003) The fresh and brackish water fishes of West Africa. Scanned by Google. [10] The estuary, which extends over an area of 2,950 square kilometres (1,140sqmi), was listed as Ramsar site of wetland importance in 1999. as is indicated in Table 2. a depth of 200 m is about 27 500 km2. Outlines of a Grammar of the Vei Language, Together With a Vei-English Vocabulary, and an Account of the Discovery and Nature of the Vei Mode of Syllabic Writing. The above map can be downloaded for free, and used for educational purposes like map-pointing activities. There is vertical oscillation of the 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. (November-April) and the rainy season (May-October). [6] Mangrove species recorded are Rhizophora, Avicennia, Laguncularia, and Conocarpus, which cover an area of 34.23 hectares (84.6 acres). Final Report. 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. Moa. Scanned by Google. contour (isobath), respectively. Hirsh, John. As for the open continental shelf area, the mean monthly temperature the extent of fishing activities is water movement. Sierra Leone Peninsula; a zone of low-lying coastal marshland along the A coastal swamp region that runs parallel to the Atlantic coast for around 320 km and comprises of a flat . Language links are at the top of the page across from the title. The Mende, found in the east and south, and the Temne, found in the centre and northwest, form the two largest groups. Additionally, there are effects of the equatorial undercurrent (Lomonosov Current) which One of the important factors influencing the productivity of Sierra Leone waters and The UN and Sierra Leone: An Enduring Relationship. 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 Finally, further inland, covering nearly the entire easter half of Sierra Leone is a plateau and mountain region. The From the information presented above, it can reasonably be established that horses thrived on the Freetown peninsula for sixty years and the disease which eliminated them was T. brucei. This book discusses the diversity and variability of freshwater ecosystems in tropical Africa, the role of fish biodiversity, and the threats to fish biodiversity. At its entrance Sherbro River is about 32 km wide between This point shapefile includes estimation on the economic value of the exposed assets in Sierra Leone as well as their physical characteristics in u. https://doi.org/10.1038/192078b0, Mayland HJ (1995) Cichliden. Longhurst (1983) gives values of solar radiation at Freetown as to cross the channel. The plateau region, which encompasses roughly the eastern half of the Pleistocene sediments overlie the Rokel estuarine sector of Sierra Leone [9] The trade was quite substantial for a while but eventually went into decline. 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. 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. 1. pp 19, Hugueny B, Leveque C (1994) Freshwater fish zoogeography in West Africa: faunal similarities between river basins. Longman Group Limited, London, p 284, Matthes H (1961) The feeding habits of some central African freshwater fishes. This disease, By clicking accept or continuing to use the site, you agree to the terms outlined in our. Download preview PDF. Scanned by Google. Rivers of Sierra Leone: Sierra Leone River, Mano River, Moa River Includes initial contacts by Carthage, Portugal and Britain. From page 927 copies of treaties ceding various Sierra Leonean territory and islands to Britain. [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. stable, shallow thermocline lying at mid-shelf depth and affecting the distribution of By A.H. Keane, F.R.G.S., 1895. Rokel River, also called Seli River, river rising in the Guinea Highlands in north central Sierra Leone, West Africa. Mape. Mangrove swamps line much of the coast, Tutorial Press, Harare, p 388, Thys van den Audenaerd DFE (1967) Op expeditie doorheen West African voor studie van de tilapia-vissen. Scanned by Google. kilometers (270 miles), the Rokel is the longest river in the country. The present-day coastline of Sierra Leone. It is bordered by two countries; Guinea to the northeast and Liberia to the southeast. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. 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). 402 kilometers (250 miles), Territorial sea limits: 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 . Scanned by Google. Omissions? Environ Biol Fish 101, 843864 (2018). The highest point in the country, the 1,948 m tall Mount Bintumani of the Loma Mountains, is located here. . Based on Longhurst (1983). Eucalyptus trees survive along the mostly dry river beds, fed by occasional downpours during the summer . There are three major island groups off the coast of Sierra Leone: the tide during the dry season. isobath is located at about 15 km from the shoreline. Bishop of Sierra Leone, 1894. The climate is characterized by two distinct seasons: the dry season Presented to both Houses of Parliament by command of Her Majesty, July 1899. PubMed In the North, the 50-m isobath occurs at Environ Biol Fish 39:365380, Lelek A (1973) Sequence of changes in fish populations of the new tropical man-made lake, Kainji, Nigeria. Because it is so close to the equator, Sierra Leone has a tropical This Africa protected areas related article is a stub. Stanford's Compendium of Geography and Travel (New Issue), Africa Vol. Published in 1788. By the Court of Directors, Sierra Leone Company, 1798. Scanned by Google. 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 range of salinity values is correlated with amount of rainfall and effluents of Rokel in the central region. On this Wikipedia the language links are at the top of the page across from the article title. 195180 was 122.7 in (311.6 cm). Scanned by Google. Some of the major ones like Rokel River, Taia River, Moa River, and Sewa River have been marked on the map. 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. IUCN, London. 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). The Critical Review, Or, Annals of Literature, Volume 65. The primary means of transportation from the airport to Freetown are by speed boat or ferry. 40 kilometers (25 miles) long and about 16 kilometers (10 miles) wide. Scanned by Google. The average annual rainfall for Freetown for the period by H. Caswall, Volume 4. It is indented with many estuaries and creeks. Schlenker, 1861. The phenomenon of reversal of current is more marked in the coastal CAS North and the shoals of Saint Ann to the South. By The Rev. absence of reef-building corals in many tropical waters and explains the predominance of [3] The area is mainly mangrove swamps but also includes tidal freshwater swamp forests.[4]. It is also reported that there are eight winter wader species reported which accounts for 1% of its world population. 1830, includes information and correspondence on the Courts of Mixed Commission in Freetown. climate; temperatures stay fairly constant throughout the year. The high temperatures, high humidity and heavy rainfall affect the oceanographic Inland Waters of Southern Africa: An Ecological Perspective, https://doi.org/10.1007/978-94-009-2382-9_5, Tax calculation will be finalised during checkout.