Status of fish stocks and fisheries of thirteen medium-sized African reservoirs

by M. van der Knaap

Publisher: Food and Agriculture Organization of the United Nations in Rome

Written in English
Published: Pages: 107 Downloads: 88
Share This

Places:

  • Africa.

Subjects:

  • Fisheries -- Africa.,
  • Reservoirs -- Africa.

Edition Notes

StatementMartin van der Knaap.
SeriesCIFA technical paper,, 26
Classifications
LC ClassificationsSH311 .K53 1994
The Physical Object
Paginationxi, 107 p. :
Number of Pages107
ID Numbers
Open LibraryOL546624M
ISBN 109251035814
LC Control Number96127104
OCLC/WorldCa32669099

The number of stocks rebuilt since increased to NOAA Fisheries tracks stocks or stock complexes in 46 fishery management plans. Each year, assessments of various fish stocks and stock complexes are conducted to determine their status. These assessments include stocks of both known status and previously unknown status. South West Indian Ocean Fisheries Governance and Shared Growth Program (SWIOFish) The South West Indian Ocean, where more than one hundred million people live within kilometers from the coast, is a newer frontier for the Africa Fisheries Program. Almost one third of fish stock is overexploited or depleted, while 40 percent are fully exploited. NOAA Fisheries is pleased to present the Report to Congress on the Status of U.S. Fisheries under the science-based framework established by the Magnuson-Stevens Fishery Conservation and Management Act (MSA). The report highlights work toward the goal of maximizing fishing opportunities while ensuring the sustainability of fisheries and fishing communities. The Comprehensive Africa Agriculture Development Programme (): Key role of African fisheries and aquaculture in agricultural development and economic growth 3. Makanga, D. (): Fisheries can play key role. Available on the website of Inter Press Service Africa Table 1: Inland capture fisheries production by continent and major producer.

  Countries with higher freshwater fish SR report a higher mean yield – a finding that mirrors smaller‐scale work on freshwater fish in mesocosms (Carey & Wahl, ) and reservoirs in the American Midwest (Carlander, ) as well as on marine fisheries (Worm et al., ). Importantly, this finding holds after accounting for other. Fish Stocking. Home / Fish Stocking. Largemouth Bass From $ Bluegill Sunfish From $ Hybrid Bluegill From $ Redear Sunfish From $ Channel Catfish From $ Hybrid Striped Bass From $ Tilapia From $ Triploid Grass Carp From $

Status of fish stocks and fisheries of thirteen medium-sized African reservoirs by M. van der Knaap Download PDF EPUB FB2

Status of Fish Stocks and Fisheries of Thirteen Medium-Sized African reservoirs. An introduction by A. Jacobson-Widding and W. van Beek on the theme developed in the book, African folk Author: Martin Van Der Knaap.

Status of fish stocks and fisheries of thirteen medium-sized African reservoirs. CIFA Technical Paper. Rome, FAO. ABSTRACT: This report is an overview of fisheries-related information on thirteen African reservoirs exceeding km 2 in surface area.

The reservoirs are Lagdo, Maga, Mbakaou and Bamendjing (Cameroon), Kossou. Relative abundance for 19 fish species was estimated as well and data are summarized in Table Reduction in surface area of the Flats due to drying up was of the order of 1 km 2. As a result fish are concentrated and become vulnerable to predatory fish.

Reservoir Fisheries Management; Strategies for the s. Reservoir Committee, Southern Division American Fisheries Society, Bethesda, Maryland. Kapetsky, J.M. and T. Petr, Status of African reservoir fisheries, Part I.

Report of the round-table discussion on increasing benefits from African reservoir fisheries. Fishery Stock Status Updates | NOAA Fisheries. Status of fish stocks and fisheries of thirteen medium-sized African reservoirs. [M van der Knaap] Home. WorldCat Home About WorldCat Help.

Search. Search for Library Items Search for Lists Search for Contacts Book\/a>, schema:CreativeWork\/a> ; \u00A0\u00A0\u00A0\n library. Various sources could be indicated from which fish was transported to different markets, in and outside Cameroon.

This unknown quantity could account for the gap between fish marketed (9 t) and sampled (12 t) in (Van der Knaap et al., b). Thus the high fisheries productivity of the reservoir is substantiated. Status of fish stocks and fisheries of thirteen medium-sized African reservoirs.

By M. van der Knaap, Rome (Italy). Fisheries Dept. FAO and FI. Abstract. Summary (En)Summar. Determining Stock Status. These reports provide comprehensive status updates on fish stocks included in the Fish Stock Sustainability Index, and other, non-FSSI fish stocks.

NOAA Fisheries provides up-to-date information on whether a stock is overfished, subject to. Status of fish stocks and fisheries of thirteen medium-sized African reservoirs. Food & Agriculture Org.

FAO, CIFA Technical Pa pp. Google Scholar. Vanden Bossche and Bernacsek, b Vanden Bossche, JP., Bernacsek, G.M., b. Source book of the inland fishery resources of Africa, FAO, CIFA Technical Paper 18/2.

1. Introduction. Understanding and predicting biological productivity is considered a key question by lake fisheries scientists. Several ecologists and fisheries managers have tried to determine the abundance of living stocks or the specific biodiversity in aquatic ecosystems using some of their characteristics, i.e.

surface of the river drainage basin, surface area of lakes, flood plain areas. The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada’s performance on key environmental sustainability issues. The Status of Major Fish Stocks indicator measures the status of major fish stocks by classifying stocks into “healthy,” “cautious” and “critical” categories, as outlined in the precautionary approach.

Current status of fisheries and fish stocks of the four largest African reservoirs: Kainji, Kariba, Nasser/Nubia and Volta Status of fish stocks and fisheries of thirteen medium-sized African reservoirs Martin van der Knaap CIFA Technical Paper CIFA/T Source book for the inland fishery resources of Africa Vol.

Status of Fish Stocks and Fisheries of Thirteen Medium-Sized African reservoirs. Book. Full-text available. Jan ; Martin Van der Knaap. In many reservoirs, fisheries have been pushed to the level reaching overexploitation due to excessive fishing.

A study on the status of fish stocks and fisheries of thirteen medium-sized African reservoirs over km 3 concluded that adequate data exist in only a few cases to produce annual yield figures or estimates.

Deterioration in data collection has also been noticed in the countries of. > Global estimation of fish abundance: Data on the status of fish stocks is provided by the fisheries and scientists.

The FAO collates this information and then attempts to draw up a picture of the worldwide situation. The problem is that reliable data exists for only about stocks. Experts do not agree on the status of other fish stocks.

In this comprehensive edited book, international experts in fisheries management and ecology review and appraise the status of lake and reservoir fisheries, assessment of fisheries yields, trophic ecology, rehabilitation and conservation, including a special section on African lakes where so much information of huge relevance to fisheries managers is now available.

Knaap, M. van der. Status of fish stocks and fisheries of thirteen medium-sized African reservoirs. CIFA Technical Paper. Rome, FAO. William R. Jobin (). Dams and Disease: Ecological Design and Health Impacts of Large Dams, Canals, and Irrigation Systems. Taylor & Francis.

ISBN A major constraint to science-based fish stock management in West Africa is the lack of reliable data on target stocks.

and Fisheries of Thirteen Medium-Sized African reservoirs. high seas fisheries and migratory fish stocks which straddle the waters of more than one state. The Large Marine Ecosystem (LME) concept characterises marine regions of the world according to ecological (rather than political or economic) criteria.

The Southern African region is defined by two LMEs: the Benguela Current. The total fish yield taken by birds was 2,–9, metric tons (wet weight) per year (≈ KJ m-3 d-1) which is among the highest fish yields taken from natural lakes including.

Additionally, three more fish stocks were rebuilt inbringing the total number of rebuilt stocks to 44 since Status of Stocks full report: HTML|PDF (8 pages). Press release.

Quarterly Stock Status Updates and past reports. Recipe for Sustainable Fisheries. Under the Magnuson-Stevens Act, the United States has become an.

A major constraint to science-based fish stock management in West Africa is the lack of reliable data on target stocks. This especially holds true for inland fisheries, such as those that operate. Nea reservoirs are behind large dams and contribute directly to 12–16 percent of the world’s irrigated food production.

But reservoirs, built to store water, adversely impact fisheries, by altering the flow of rivers, changing fish habitat and blocking fish migration routes. The culture-based fisheries in China are the most developed in the world.

This fishery is confined to small-sized and medium-sized reservoirs, throughout the country. It is estimated that the fishery yieldedtons in from 1, ha of reservoirs (Cen and Zhang, ), approximating kg ha −1 year −1. Klima. The Sanaga River forms a boundary between two tropical moist forest Cross-Sanaga-Bioko coastal forests lie to the north between the Sanaga River and the Cross River of Nigeria, and the Atlantic Equatorial coastal forests extend south of the river through southwestern Cameroon and Equatorial Guinea, Gabon, the Republic of the Congo, Cabinda and the Democratic Republic of.

Lake Sélingué is a km² artificial lake in Mali's Sikasso Region, formed by the Sélingué Hydroelectric dam on the Sankarani southwestern arm forms part of the border with Sélingué, rising and falling in the rainy and dry seasons, allows agriculture on the irrigated perimeters, managed by the Office of Rural Development of Sélingué, as well as fishing.

SOUTH AFRICA - South African stocks of wild fish are on the decline, a report by the Department of Agriculture, Forestry and Fisheries (DAFF) has shown. "The Status Report confirms that South African stocks show no exception to global deteriorating trends as local wild resources generally continue to decline," said the department at the.

The status of commercial fish and shellfish stocks is especially critical in the Mediterranean Sea and the Black Sea where only % are in good status based on a single criterion (2 out of 33 (6 %) and 1 out of 7 ( %), respectively), and no stock is in good status based on.

Available in the National Library of Australia collection. Author: Bowman, Martin; Format: Book; 20 p. ; 30 cm. The fish available in Bamako mainly come from Lake Sélingué. [1] Notes ^ Knaap, M. van der. Status of fish stocks and fisheries of thirteen medium-sized African reservoirs.

CIFA Technical Paper. No. Rome, FAO. p.Status of fish stocks and fisheries of thirteen medium-sized African reservoirs. CIFA Technical Paper Food and Agriculture Organization of the United Nations, Rome, Italy.The Noun River is a river in the West Province of arises at Lake Oku) and flows south, it is joined by the Monoun River and flows south in the valley between the mountains Ngotsetzezan and Mount Yahou It turns east at about 5° N latitude.

Its mouth is at the Mbam River), which itself is a tributary of the Sanaga. It forms the boundary between the Bamiléké area and the Bamun.