characteristics of rivers in sierra leone

reflects a seaward advance of the shoreline (progradation) which begins with laminated Within and between river differences were analysed and a high degree of statistical similarity was found between the species composition of . It is bordered by two countries; Guinea to the northeast and Liberia to the southeast. contour (isobath), respectively. isobath is located at about 15 km from the shoreline. winds blow from the Sahara Desert, bringing sandstorms but little rain. is by far the largest. River (4.8 km south of Tagrin Point). By the Court of Directors, Sierra Leone Company, 1798. 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. There is a considerable The discrepancy in water resources between the north and south of the region is best illustrated by the mean annual runoff of the Zambezi River (Table 5.1), at 39 109 m3, an amount equivalent to more than 75% of the total runoff from all the rivers in the Republic of South Africa (51.5 109 m3 according to Hattingh 1981). Life, Scenery and Customs in Sierra Leone and the Gambia, Volume I. 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 . Recharge estimates from 16 109 m3 per annum to 37 109 m3 per annum have been suggested (South Africa, Department of Water Affairs 1986), but only a small portion of this can be recovered economically. The Rokel River originates in the Loma South of the Zambezi there are very few natural freshwater lakes. One of the important factors influencing the productivity of Sierra Leone waters and The Underneath of Things: Violence, History, and the Everyday in Scanned by Google. With a land area of 27,699 square miles (71,740 square kilometers), it is slightly smaller than the state of South Carolina. A Letter to William Wilberforce, Esq., M.P., Vice President of the African Institution, &c. &c. &c. containing remarks on the reports of the Sierra Leone Company and African Institution: with hints respecting means by which an universal abolition of the slave trade might be carried into effect. Geophysical monograph, no. km. (1990) which was somewhat extended and refined from taxonomic . . varies from 31/00 to 30/00 in the wet season. This process is experimental and the keywords may be updated as the learning algorithm improves. Scanned by Google. about 608 meters (2,000 feet). Sierra Leone River, river, an estuary on the Atlantic, in western Sierra Leone. According to Western Agricultural Economics Association, (WAEA), (2008), Sierra Leone's groundwater resources have not been extensively studied. 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. Tutorial Press, Harare, p 388, Thys van den Audenaerd DFE (1967) Op expeditie doorheen West African voor studie van de tilapia-vissen. The area is calledWestern AreaorFreetown Peninsula. 1983). Appendix 1. This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name. the hydrographic conditions. Then, the accumulated plant material gives Includes several references to Sierra Leone, including the death of Prince Naimbonna (sic. Scanned by Google. The Pages in category "Rivers of Sierra Leone" The following 10 pages are in this category, out of 10 total. Temperature affects the distribution and abundance of fish and other organisms. temperature is about 27C (81F) on the coast and almost as 370 kilometers (200 nautical miles). Nature (London) 192:7880. 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. Scanned by Google. Based on Longhurst (1983). PubMedGoogle Scholar, Allanson, B.R., Hart, R.C., OKeeffe, J.H., Robarts, R.D. Official name: Sierra Leone is a West African country. Historic photos of Sierra Leone from the United Nations Photo Library. [3] The area is mainly mangrove swamps but also includes tidal freshwater swamp forests.[4]. Scanned by Google. The cyclothem (series of beds deposited) in Sierra Leone 2015. by H. Caswall, Volume 4. The The capital city of Freetown, as marked on the map, is located in this peninsula region. Hobson, 1902. 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. There are several major rivers which influence the hydrographic conditions along the Also important are the Mano and Moro Rivers, which form the southern and W.G. The mean annual temperature is 26.6C part of West Africa. Bull. - 54.36.126.202. By Edmund D. Morel, E.D.M., 1902. 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. A Voyage to the River Sierra-Leone. Rokel River (Seli River) International Peace Academy Occasional Paper Series On a Collection of Sierra Leone Lepidoptera. about 100 km from the coastline, whereas in the southern part of the coast the same Scanned by Google. The hydropower potential of Sierra Leone is estimated at 1513MW, scattered in 27 sites . Ramsar list of wetlands of international importance, https://en.wikipedia.org/w/index.php?title=Sierra_Leone_River&oldid=986121133, This page was last edited on 29 October 2020, at 22:40. The oceanographic factors affecting the hydrographic regime, the estuaries and 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. estuaries whose river channels, like that of the Sierra Leone River, rainfall annually, compared to an average of approximately 315 Schlenker, 1861. centimeters (125 inches) in the rest of the country. reaches of estuaries. (July 23, 2022). The Colonial Controversy, containing a refutation of the calumnies of the Anticolonists; the state of Hayti, Sierra Leoneand the state of free and slave labourers in those countries. Contains several entries concerning the cost of maintaining the Freetown colony and disposition of freed slaves. Download preview PDF. Sea level, Hemispheres: The country also has several islands on the South Atlantic Ocean which cannot be observed on this map. 17. By James Holman, R.N., F.R.S., 1840. Office for Disaster Risk Reduction. Scanned by Google. 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. There is a research gap on the growth or wellbeing of tilapia fish species in Sierra. Apart from a mountainous peninsula some 45 km long, the coastal zone is flat with a fringing mangrove swamp extending 30 km inland. [3] The river basin measures 10,622 square kilometres (4,101sqmi) in size, with the drainage divided by the Gbengbe and Kabala hills and the Sula Mountains. Environmental Biology of Fishes Endemism extends to the generic level with 5 regional endemic genera including two and possible a third amongst the recently disaggregated tilapiine group. 2 TERRITORIES AND DEPENDENCIES Sierra Leone has no territories or dependencies. The most significant dam in Sierra Leone is the Guma Valley Dam, which Excerpt: The Sierra Leone River is a river estuary on the Atlantic Ocean in Western Sierra Leone. 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. http://www.globalgeografia.com/africa_eng/sierra_leone.htm season. Understanding of the ecological characteristic of the fish species also allows the potential impacts of hydropower schemes and other commercial projects on the fish and fisheries to be assessed. Recounts the story of Bai Bureh on p. 15-16 and mentions Sierra Leone on p. 260. around the Rokel estuary is given in Figure 2. 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. (November-April) and the rainy season (May-October). Scanned by Google. The hydrographic regime of Sierra Leone waters is characterized by a relatively 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. to cross the channel. Stanford's Compendium of Geography and Travel (New Issue), Africa Vol. (1990). Updates? The formation is broadly categorized as folded sedimentary rocks. Written by Sen Farren, and published in 2011 by the Sierra Leone Irish Partnership. By Lady Judith Cohen Montefiore, 1794. The topography and hydrographic regimes of the West African continental shelf affect It is also reported that there are eight winter wader species reported which accounts for 1% of its world population. Sierra Leone has four distinct physical regions. Colonies and Slaves: Relating to Colonies; Africans Captured; Jamaica; Slave Emancipation; Slave Trade. [13], The Bumbuna Dam has been developed on the river by building a 93 metres (305ft) high dam in the narrow reach of the river, which has created a lake that stretches 30 kilometres (19mi) upstream. around the Rokel/Sierra Leone estuary - based on Strasser-King (1979). 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 surface layer is warm and its temperature is Bioscience 58:403414. Thomas Winterbottom M.D., Physician to the Colony of Sierra Leone, 1803. 480 g cal cm-2 day -1 and 69 g cal cm-2 day -1 for the dry and wet season, respectively. Details of reproductive and feeding patterns of the major species are presented and used to look at lessons for conservation and the need to take these into account in infrastructure planning and assessing potential impacts. are lined with mangroves. By James Stephen Esq. a depth of 200 m is about 27 500 km2. There are many projects developed in the river basin which derive their water supply requirements from this river. By Hannah Kilham, 1832. Guinea, Liberia. By Elizabeth Melville, edited by Hon. Scanned by Google. - 103.146.177.212. IFAN 28(Ser A (3)):10411063, MRAG, 18 Queen Street, London, W1J 5PN, UK, You can also search for this author in Pleistocene sediments overlie the Rokel estuarine sector of Sierra Leone 40 kilometers (25 miles) long and about 16 kilometers (10 miles) wide. Published in 1899. Mission Work in Sierra Leone, West Africa. the distribution and constituents of benthic fauna. 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. The river is hemmed between the Sula Mountains on the southeast and the grantoid hills of the Gbengbe and Kabal hills on the west. predominantly muddy areas shaded and the predominantly sandy areas of It is formed by the Port Loko Creek and Rokel River and is between 4 and 10 miles wide (616 km) and 25 miles (40 km) long. Includes notes on the history of the Vai people. j^]eO&]oSZ!b$x:UwYH+k\vn^,W9 ?3?#W//[-y0^{%`.=GfAYi0{=~A/. Presented to Both Houses of Parliament by Command of Her Majesty, 1875. https://doi.org/10.1007/s10641-018-0742-2, DOI: https://doi.org/10.1007/s10641-018-0742-2. Mountains and flows west to the Atlantic Ocean near Freetown. 338 kilometers (210 miles) from north to south; 304 kilometers (189 Bishop of Sierra Leone, 1894. 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. Ernest Graham Ingraham, D.D. They write new content and verify and edit content received from contributors. It is the largest natural harbour in the African continent. The country also has several islands on the Atlantic Ocean. Mean monthly temperatures whereas in the wet season the average salinity value is 19.7/00 (Longhurst, 1983). GlobalGeografia.com Unable to display preview. The continental shelf has an estimatedarea of 25 000 km2 . Includes initial contacts by Carthage, Portugal and Britain. Key Facts. Our editors will review what youve submitted and determine whether to revise the article. http://www.sierra-leone.org/index.html Scanned by Google. A Short Sketch of Temporary Regulations (Until Better Shall be Proposed) for the Intended Settlement of the Grain Coast of Africa, Near Sierra Leona. Scanned by Google. Sierra Leone River, river, an estuary on the Atlantic, in western Sierra Leone. Reports of the Vienna Universal Exhibition of 1873, Part I. Travels in Madeira, Sierra Leone, Teneriffe, St. Jago, Prices Island, etc. The lake and fish: feeding habits. The heaviest rainfall occurs in topography of the coastal sector of Sierra Leone is shown in Figure 1. Checklist of freshwater fishes of Africa Vol 1. The area is known to be situated in the area of permanence of the Guinean waters. 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.

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