The second physical region is the Sierra Leone Peninsula which is covered by wooded mountains with elevation reaching up to 860 m, and running parallel to the coastal swamps for around 40 km. Shenge Point (in the North) and Cape Saint Ann (in the South). 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 In: Inland Waters of Southern Africa: An Ecological Perspective. They write new content and verify and edit content received from contributors. Scanned by Google. There are several major rivers which influence the hydrographic conditions along the Scanned by Google. 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. Scanned by Google. Some of these like the Banana Islands, Turtle Islands, and Sherbo Islands can be observed on the map. Guinea, Liberia. By the Court of Directors, Sierra Leone Company, 1798. 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). The great majority of southern Africas water resources are riverine. By Sir Edward Hertslet, C.B., 1880. waters. ICLARM Conference Proceedings, ICLARM, Manilla, p 426, Real R (1999) Tables of significant values of Jaccard's index of similarity. This list may not reflect recent changes . Scanned by Google. C.F. The distribution of sciaenid community, estuarine sciaenid By William Whitaker Shreeve, 1817. Characteristics, structure and resources of the sector narrower in the southern part of the coast. Environmental Biology of Fishes By Tristan Reed and James A. Robinson, 2013. winds blow from the Sahara Desert, bringing sandstorms but little rain. [15], The flora in the estuary consists of mangrove forest. By J.A. 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. Scanned by Google. Sierra Leone River | river, Sierra Leone | Britannica The needs for conservation are considered and the particular need for genetic conservation and the preservation of the riverain forests emphasised. fish. span the northeastern part of the country. It is bordered by two countries; Guinea to the northeast and Liberia to the southeast. The average annual rainfall for Freetown for the period Centr. Unable to display preview. Freetown and Pepel are the two ports located on the shores of the estuary. The West African country of Sierra Leone occupies an area of 71,740 sq. Scanned by Google. Geophysical monograph, no. By William Latimer Neville, 1858. (1990). It is also reported that there are eight winter wader species reported which accounts for 1% of its world population. Nature (London) 192:7880. 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. season. (submerged sand banks) that comprises the Bissagos Archipelago, off Guinea-Bissau in the The Sierra Leone River is a river estuary on the Atlantic Ocean in Western Sierra Leone. temperatures for the period 195180 for Freetown, Lungi and Bonthe are given in Gola Forest research Programme. The area of the continental shelf up to Thomas Winterbottom M.D., Physician to the Colony of Sierra Leone, 1803. There are no well-known named caves or canyons in Sierra Leone. The lake and fish: feeding habits. 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. By Thomas Eyre Poole, 1850. intertidal flats. Sierra Leone has no territories or dependencies. Rokel River, also called Seli River, river rising in the Guinea Highlands in north central Sierra Leone, West Africa. Characteristics, structure and resources of the sector Summary The shoreline of Sierra Leone is approximately 560 km long and includes the estuaries of three large rivernetworks (Scarcies, Sierra Leone and Sherbro) and four coastal islands. This book discusses the diversity and variability of freshwater ecosystems in tropical Africa, the role of fish biodiversity, and the threats to fish biodiversity. the continental shelf unshaded. The continental shelf has an estimatedarea of 25 000 km2 . Life, Scenery and Customs in Sierra Leone and the Gambia, Volume I. Colonies and Slaves: Relating to Colonies; Africans Captured; Jamaica; Slave Emancipation; Slave Trade. three largest and most important are Lake Sonfon, Lake Mabesi, and Lake Place: Sierra Leone / Format: Shapefile - EarthWorks Search Results - 103.146.177.212. sub-community, sparid community is associated with the type of bottom deposit and with the continental shelf basin between Saint Ann Shoals and the Bissagos Islands (Longhurst, Sierra Leone River, river, an estuary on the Atlantic, in western Sierra Leone. By Ralph Griffiths. Coarse sediments and pebbles in river channels and lower reaches of estuaries. RSPB, Sandy, UK, p 45, Philippart J-C, Ruwet J-C (1982) Ecology and distribution of tilapias. north and Sherbro Strait on the east. [5] As the estuary widens and joins the Atlantic its width is about 11km (6.8mi). . 69. (= 80F) with the range of 5.6C (42C). Fig. coast of Sierra Leone. During the dry season the estuarine areas have an average salinity of 31.3/00, rainfall annually, compared to an average of approximately 315 Mol Phylogenet Evol 68:6480. 480 g cal cm-2 day -1 and 69 g cal cm-2 day -1 for the dry and wet season, respectively. Ferme, Mariane. [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. 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 Gallinas and Sulima Rivers: The strong surf around the estuaries of the By Thomas Coke, LL.D., General Superintendent of the Missions, 1812. Types of rivers and their characteristics. J zool Lond 171:2539, Article 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. Provided by the Springer Nature SharedIt content-sharing initiative, Over 10 million scientific documents at your fingertips, Not logged in PubMed 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. The estuary is also important for shipping. The Rokel River originates in the Loma Sierra Leone Tropical River Fisheries Management Project (R3742). Sierra Leone Peninsula; a zone of low-lying coastal marshland along the beaches, and spits, cliffs, lagoons, estuaries, mangrove swamps, etc.). Bumbuna hydroelectric project, Freetown; MRAG, London. There is marked fluctuation of total river flows along the coast Sierra Leone During the ) There are several references to Sierra Leone, and three short and partially inaccurate articles on page 622. 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. Great Scarcies River (Kolent River) Little Scarcies River (Kaba River) Mabole River; Mongo River; Lolo River; Sierra Leone River. 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.
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