Last edited by Sakazahn
Monday, July 20, 2020 | History

2 edition of survey of the fisheries of the Lower Yobe River in the north-western basin of Lake Chad found in the catalog.

survey of the fisheries of the Lower Yobe River in the north-western basin of Lake Chad

J. G. Tobor

survey of the fisheries of the Lower Yobe River in the north-western basin of Lake Chad

by J. G. Tobor

  • 317 Want to read
  • 30 Currently reading

Published by Federal Fisheries Service, Lake Chad Research Station in Maiduguri .
Written in English

    Places:
  • Nigeria,
  • Yobe River.
    • Subjects:
    • Fisheries -- Nigeria -- Yobe River.

    • Edition Notes

      Statementby J. G. Tobor.
      SeriesFederal fisheries occasional paper, no. 12
      Classifications
      LC ClassificationsSH315.N5 T62
      The Physical Object
      Pagination27 p.
      Number of Pages27
      ID Numbers
      Open LibraryOL4612595M
      LC Control Number77376440

        J.G. ToborA survey of the fisheries of the lower Yobe in the North Western Basin of Lake Chad Annual Report of the Fed. Dept. of Fisheries . Northern Canada, colloquially the North, is the vast northernmost region of Canada variously defined by geography and politics. Politically, the term refers to three territories of Canada: Yukon, Northwest Territories, and rly, the Far North (when contrasted to the North) may refer to the Canadian Arctic: the portion of Canada that lies north of the Arctic Circle, east of .

      The book will benefit researchers, students, and managers in both basins and other large river basins worldwide in better managing fishery resources and environment. CONTENTS: Part 1 Overview of the Two Basins. The Mississippi River: A Place for Fish . the whole Zambezi Basin (excluding Lake Malawi), species use the Zambezi River itself (Skelton, ). While there is a paucity of knowledge regarding species diversity in the Zambezi, anthropogenic activities, from fishing pressure to curtailed migration patterns due to dams, are known to impact fish resources along the river’s entire.

      The lower Columbia River Basin includes the river basins draining into the Columbia River below Bonneville Dam—the largest of which is the Willamette River. This report presents the results of a study by the U.S. Geological Survey, done in cooperation with the Lower Columbia River Bi-State Water- Quality Program, to describe the water-quality conditions in the lower Columbia River Basin . The entire geographical basin of the Lake Chad covers 8 percent of the surface area of the African continent, shared between the countries of Algeria, Cameroon, Central African Republic, Chad, Libya, Niger, Nigeria and Sudan. In recent decades, the open water surface of Lake Chad has reduced from approximately 25 km2 in


Share this book
You might also like
Child abuse

Child abuse

The Seldarte craze

The Seldarte craze

compositors guide to the London printing offices.

compositors guide to the London printing offices.

Error (Beta) Madeline Ck

Error (Beta) Madeline Ck

Wage administration in California counties.

Wage administration in California counties.

Strategy for an LDC debt workout

Strategy for an LDC debt workout

Michael Howe.

Michael Howe.

Pandas House

Pandas House

Public broadcasting and educational television

Public broadcasting and educational television

The Dean of Worcesters Latin sermon preachd at St. Pauls October 12. 1722. examind and compard. By a gentleman. With an appendix, containing the judgment of the present Archbishop of Canterbury, Bishop of Rochester, Bishop of Peterborough. ...

The Dean of Worcesters Latin sermon preachd at St. Pauls October 12. 1722. examind and compard. By a gentleman. With an appendix, containing the judgment of the present Archbishop of Canterbury, Bishop of Rochester, Bishop of Peterborough. ...

Survey of the fisheries of the Lower Yobe River in the north-western basin of Lake Chad by J. G. Tobor Download PDF EPUB FB2

Tobor, J.G., A survey of the fisheries of the Lower Yobe in the North Western Basin of Lake Chad. Annual Report of the Fed. Dept. of Fisheries, p– Van der Lingen, M.I., The use of animal manures and the integration of animal keeping and fish. The seasonal Korama River in the south of Niger does not reach Lake Chad.

Nigeria includes two sub-basins that drain into Lake Chad. The Hadejia - Jama'are - Yobe sub-basin in the north contains the Hadejia and Jama'are rivers, which supply the 6, square kilometres (2, sq mi) Hadejia-Nguru converge to form the Yobe, which defines the border between.

1. Introduction. The sub-Saharan arid zone (latitudes 9–13°N) contains some of the most important inland fisheries in Africa, mainly in seasonally inundated tropical wetlands ().Fisheries such as those of the Sudd (river Nile flood–plain) in the Sudan, the central delta of the River Niger in Mali, and the Lake Chad (LC) Basin are thought to produce several hundred thousand tons of fish Cited by: Lake Chad gave its name to the country of name Chad is derived from the Kanuri word “Sádǝ” meaning "large expanse of water".

The lake is the remnant of a former inland sea, paleolake Mega-Chad, which existed during the African humid its largest, sometime before BC, Lake Mega-Chad was the largest of four Saharan paleolakes, and is Average depth: m (4 ft 11 in).

Planning and management of inland fisheries in North East Nigeria are constrained by a lack of multi-disciplinary information. To address this problem, a survey of fishing households was undertaken within the major fisheries, including the Upper River Benue, Lake Chad and the Nguru–Gashua by:   Groundwater resources quantification and management is a key issue for agricultural development in the Komadugu Yobe (KY) River valley region in the semiarid part of the Lake Chad Basin.

The Yobe River, which used to be the main source of water for flooding the lake along the Nigerian sector, is now broken up into extensive wetland marshes. A survey conducted in revealed a total of 19 species (Bukar and Gubio, ). However, the Hadejia-Nguru wetlands are located in Yobe State which forms part of the flood plain of the Komadougou-Yobe river basin in the Lake Chad basin.

Jenness, J., The use of plants as fish poison within the Kainji basin. In Fish and Fisheries of Northern Nigeria, by W. Reed et al. Kaduma, A survey of the fisheries of the Lower Yobe River in the North Western Basin of Lake Chad.

A survey of the fisheri es of the lower Yobe in the north western basin of Lake Chad. Annual Annual Report of the Federal Department of Fisheries - 19 73, pp.

82 – Occurs at a temperature range of °C. In the Malamfatori area (Tchad), seine-net fishery on the River Yobe depends on seasonal upstream (from Lake Chad) and downstream migration during the flood (August-December) and dry (January-March) seasons, respectively.

Also, there is an intensive gillnet fishery from July-October at the river mouth. A survey of Phytoplankton in the segments of the Hadejia-Nguru wetlands that falls into Bauchi and Yobe states, Nigeria was carried out in November using standard methods.

Samples were collected from four sampling stations on the catchment of the three major rivers (Hadejia, Jama’are and Yobe) in the wetlands. team in the Lake Chad basin, and the continuous exploitation of oil and gas survey es timates Lake Chad oil reserv es at billion barrels and 14 the Komadugu-Yobe River (in Nigeria.

Four of these surveys were carried out at river sites in the Western River Basin District (WRBD) from July to September by staff from Inland Fisheries Ireland (Tableand Fig. Although fish survey work has been carried out.

The Lake Chad basin This covers major parts of north east with estimated area ofkm. Lower Benue River Basin Development Authority (LBRBDA) Anambra-Imo River Basin Development Authority HA-8 Lake ChadHadeja-Jamare Kano,Jigawa,Yobe,Borno Chad Bauchi,Plateau,Adamawa.

Lake Chad (French: Lac Tchad) is a historically large, shallow, endorheic lake in Africa, which has varied in size over the centuries.

According to the Global Resource Information Database of the United Nations Environment Programme, it shrank by as much as 95% from about tobut "the (satellite) image shows significant improvement over previous years.".

Lower Niagara River Fishing pAccess Overview Map 0 3 6 Miles Niagara Falls Lewiston Youngstown Bu falo Grand Island Lake Ontario N E W N Y O R K, U S A O T A R I O C A N A D A N I A G A R A C O U N T Y E R I E C O U N T Y Map 1 Map 2 Map 3 Wilson U p e r N i a g a r a R i v e r L o w e N i a g r a R i v e r Kings High wa y K NY 31 i n g s H.

This has both dried up part of the floodplain pastures that once supportedpeople, and dramatically reduced inflow to Lake Chad. In northern Nigeria, up to one million people have lost livelihoods because of dams on the River Yobe that once fed the Hadejia-Nguru wetland and flowed on into Lake Chad.

Lake Chad The Lake Chad basin of ,km2 supports a population of 22m people in four countries (Cameroon, Chad, Niger, Nigeria). The lake has a fishery that is over-exploited, a center of cross boarder trade, a pastoral area, with irrigation dams and.

Inventory of Fish Species in the Snake River Snake River basin with main stem river and primary tributaries. 3 Figure Spotting patterns typical of Yellowstone cutthroat trout, Snake River fi ne-spotted Reaches sampled in along the lower main stem Snake River.

23 Photo set 2. Yellowstone cutthroat trout from Reach. Since then, Lake Chad has been composed of two basins: the southern basin of the lake, fed directly by the inflows from the Chari/Logone River (annual mean km 3 .Fish stock surveys were carried out within one river catchment within the Western River Basin District (WRBD) between August and September by staff from Inland Fisheries Ireland.

Click on the below link to download the report.(iii) Assessment of the fish stock. Assessments of river fisheries are required for a number of purposes, principal among which are: (a) To make an inventory of the fisheries resources of a defined geographic area, such as a country or river basin, usually for .