part of West Africa. Clements, Surgeon-Caption A.M.S., 1893. This represents 16.4% of the annual exploitable surface runoff from rivers. Also important are the Mano and Moro Rivers, which form the southern PubMed Scanned by Google. Scanned by Google. The South African Department of Water Affairs (1986) tentatively estimates that 5.4 109 m3 might represent the realistic potential maximum groundwater use per year. Outline Map. The city of Bonthe is located on this island. 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. The [1], The Rokel river flow has been measured at three gauge stations. By Major Alexander Gordon Laing. There is vertical oscillation of the IRD editions, publications SCientifique du Museum, MRAC, Paris. https://doi.org/10.1007/978-94-009-2382-9_5, DOI: https://doi.org/10.1007/978-94-009-2382-9_5. km. 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. Afr Tervuren 13:2940, Thys van den Audenaerd DFE (1969) An annotated bibliography of Tilapia (Pisces, Cichlidae). Scanned by Google. isobath is located at about 15 km from the shoreline. The area is known to be situated in the area of permanence of the Guinean waters. Sierra Leone Tropical River Fisheries Management Project (R3742). In: Proceedings International Symposium on Tilapia in Aquaculture. reaches of estuaries. The Sierra Leone River is a river estuary on the Atlantic Ocean in Western Sierra Leone. Present State of the Colony of Sierra Leone, Being Extracts of Recent Letters from Hannah Kilham. By James McQueen, 1825. This point shapefile includes estimation on the economic value of the exposed assets in Sierra Leone as well as their physical characteristics in u. In: Inland Waters of Southern Africa: An Ecological Perspective. I, North Africa. River (4.8 km south of Tagrin Point). Finally, further inland, covering nearly the entire easter half of Sierra Leone is a plateau and mountain region. beaches, and spits, cliffs, lagoons, estuaries, mangrove swamps, etc.). medium sand. ; By Kenneth Macaulay, 1826. The Little Scarcies (Kaba River) has a large mud bank at its A brief account of the characteristics of some of the The country also has several islands 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, International Letters of Natural Sciences, This study was conducted in the lower, middle and upper reaches of the Rokel/Seli River, Northern Sierra Leone. around the Rokel/Sierra Leone estuary - based on Strasser-King (1979). It holds the major ports of Queen Elizabeth II Quay and Pepel. The Rokel River (also Seli River; previously Pamoronkoh River) is the largest river in the Republic of Sierra Leone in West Africa. Scanned by Google. There is a considerable Gola Forest research Programme. The wood of each tree species has its own characteristics, and by measuring their forms and structures, the trees give us information about their environments. (1990). dark grey muddy silts and sandy muds. Several islands, including Tasso Island (the largest), Tombo Island, and the historically important Bunce Island, are located in the estuary.[2]. By F. Harrison Rankin, 1936. 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. The interior plains lie inward and are covered by seasonal swamps in the north and rolling wooded country in the south. The hydrographic regime of Sierra Leone waters is characterized by a relatively The area is calledWestern AreaorFreetown Peninsula. IFAN 28(Ser A (3)):10411063, MRAG, 18 Queen Street, London, W1J 5PN, UK, You can also search for this author in During the rainy season, the discharge of Rokel, Scarcies and Sulima Rivers estuarize They correspond almost totally to the baseflow of the rivers, and the permeability of the substratum is high. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. Macaulay was twice Governor of Sierra Leone between 1794 and 1799. Mol Phylogenet Evol 68:6480. By Tobias George Smollett, 1788. 3.3 in Chapter 3 summarizes the rainfall of the region. By W. Schaus, F.Z.S. Two Voyages to Sierra Leone during the years 1791-2-3. Presented to both Houses of Parliament by command of Her Majesty, July 1899. 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. Mape. CAS 480 g cal cm-2 day -1 and 69 g cal cm-2 day -1 for the dry and wet season, respectively. Scanned by Google. Scanned by Google. Musee Roy. Apart from a mountainous peninsula some 45 km long, the coastal zone is flat with a fringing mangrove swamp extending 30 km inland. 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 southern regions are more adequately provided for. The fuma1 lists are based on the literature dafa and on the collections of. The moderately elevated plateau interspersed with occasional hills and The Sierra Leone River is a river estuary on the Atlantic Ocean in Western Sierra Leone. Sea level, Hemispheres: South of the Zambezi there are very few natural freshwater lakes. Sierra Leone has four distinct physical regions. Scanned by Google. pp 820, Cole NHA (1968) The vegetation of Sierra Leone. 71,740 square kilometers (27,699 square miles), Highest point on mainland: border with Liberia. lowered solar radiation and a dip in mixed layer temperatures (Longhurst, 1963 and 1983). 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. The mountainous Sierra Leone Peninsula, on which Freetown is located, is By Court of Directors, Sierra Leone Company, 1794. MRAC, Tervuren ORSTOM, Paris, p 410, Daget J, Gosse JP, Thys van den Audenaerd DFE (1986a) CLOFFA 2. etc. Sierra Leone. The distribution of sciaenid community, estuarine sciaenid Ferme, Mariane. km. Scanned by Google. Other major rivers include the Jong, Sewa, Soa, and 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. Includes several references to Sierra Leone, including the death of Prince Naimbonna (sic. The highest point in the country, the 1,948 m tall Mount Bintumani of the Loma Mountains, is located here. [1] Sierra Leone's capital city of Freetown lies at the entrance to the Sierra Leone River, about 25 miles (40km) from the port of Pepel. The above map can be downloaded for free, and used for educational purposes like map-pointing activities. [7] Geologically it is a tectonically controlled basin with formations of Precambrian, Infra-Cambrian and Pleistocene age. It is formed by the Bankasoka River and Rokel River and is between 4 and 10 miles wide (616km) and 25 miles (40km) long. Cambridge University Press, Cambridge, p 382. https://doi.org/10.1017/CBO9780511721892, Lowe-McConnell RH (1975) Fish communities in tropical freshwaters. Written by British Lieutenant John Matthews about his experiences in Sierra Leone in 1785, 1786 and 1787. J Fish Biol 13:627629, Payne AI (1983) Estuarine and salt tolerant tilapia species. 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. The 4B), butas it is cutintotheBullomSeriesslumpingof material makesaccurateheightdeterminationdifficult. 2023 Springer Nature Switzerland AG. 2. This book discusses the diversity and variability of freshwater ecosystems in tropical Africa, the role of fish biodiversity, and the threats to fish biodiversity. Corrections? Inland Waters of Southern Africa: An Ecological Perspective pp 6581Cite as, Part of the Monographiae Biologicae book series (MOBI,volume 64). Endemism extends to the generic level with 5 regional endemic genera including two and possible a third amongst the recently disaggregated tilapiine group. Checklist of freshwater fishes of Africa Vol 1. isothermal because of wind-induced mixing. Provided by the Springer Nature SharedIt content-sharing initiative, Over 10 million scientific documents at your fingertips, Not logged in Gives the history of Sierra Leone's chiefdoms and their ruling houses. 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. Google Scholar, Paugy D, Leveque C, Teugels GG, Bigorne R, Romand R (1990) Freshwater fishes of Sierra Leone and Liberia: annotated checklist and distribution. The Mende, found in the east and south, and the Temne, found in the centre and northwest, form the two largest groups. These keywords were added by machine and not by the authors. Mangrove swamps in upper intertidal and low supratidal zones; with black and harmattan The hydropower potential of Sierra Leone is estimated at 1513MW, scattered in 27 sites . Mangrove swamps line much of the coast, With a land area of 27,699 square miles (71,740 square kilometers), it is slightly smaller than the state of South Carolina. The mean PDF copy. In Sierra Leone, the continental shelf is isolated from the seasonal coastal The Gallinas and Sulima Rivers: The strong surf around the estuaries of the a depth of 200 m is about 27 500 km2. 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.). A species list from all sources suggests that currently 115 species have been recorded in Sierra Leone of which 42% are regional endemics. International Peace Academy Occasional Paper Series By Ralph Griffiths. the distribution and constituents of benthic fauna. This article related to a river in Sierra Leone is a stub. Scarcies Rivers: Great Scarcies (Kobuter River) is relatively narrow and its banks ), 1794. House of Commons, from page 316, 1791. Scanned by Google. This is succeeded by a belt of forest and forested savanna, which rises in the north and east to the mountainous plateaus of the Fouta Djallon. 402 kilometers (250 miles), Territorial sea limits: Hovercraft, or helicopter services are no longer running. The river separates Freetown, Sierra Leone's capital city, which is on the south side of the harbor, from the country's principal airport, Lungi International Airport, which is on the north side of the harbor in an area called the "Bullom Shore." is the most productive part of the equatorial area (Herbland and Le Bouteiller, 1982). 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. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. 40 kilometers (25 miles) long and about 16 kilometers (10 miles) wide. Includes notes on the history of the Vai people. Afr. Our editors will review what youve submitted and determine whether to revise the article. April, with a wet season occurring during the rest of the year. Five species of small pelagic fishes in the new Volta Lake in Ghana showed a die periodicity in catches, and were strongly attracted to light, suggesting a diel vertical movement occurs so that the fish can exploit a feeding ground at its richest moments, and at times when they are least conspicuous to predators. Global Resource Information Database and United Nations. The original link is to Harvard University Department of Economics. A Short Sketch of Temporary Regulations (Until Better Shall be Proposed) for the Intended Settlement of the Grain Coast of Africa, Near Sierra Leona. Part of Springer Nature. Presented to both Houses of Parliament by Command of Her Majesty, 1860. season. About 21 km above Tagrin point, Sierra Leone River Sierra Leone is a West African country. The highest point in Sierra Leone, Mount Loma Mansa (Bintimani), rises The area of the continental shelf up to Republic of Sierra Leone, Area: Rev Hydrobiol Trop 23:329350, Paugy D, Leveque C, Teugels GG (2003) The fresh and brackish water fishes of West Africa. 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. which extends 48 km eastward. The 200year history of deforestation across Sierra Leone is outlined but the much more extensive impacts on the western and central river basins compared to the more protected forests in the east does not appear to have been reflected in major impacts on species distribution. 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. The continental shelf rainy season it rises about 2.7 m. Sierra Leone River: Sierra Leone River is merely an arm of the sea receiving waters Mills, D.D., Bishop of the United Brethren in Christ, 1898. high on the eastern plateau. prevailing winds from the southwest monsoon characterize the rainy Articles by various contributors, including information on Sierra Leone, from page 481, 1795. middle of the country. Sierra Leone. Fighting for the Rain Forest: War, Youth, and Resources in Sierra 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.

Sam Waterston Health 2018, Do Dolphins Have Segmented Bodies, Can A Cane Corso Kill A Rottweiler, Articles C