Enhancing the fish production potential of Lake Victoria papyrus wetlands, Kenya, using seasonal flood-dependent ponds

2010 ◽  
Vol 18 (4) ◽  
pp. 471-483 ◽  
Author(s):  
J. Kipkemboi ◽  
C. M. Kilonzi ◽  
A. A. van Dam ◽  
N. Kitaka ◽  
J. M. Mathooko ◽  
...  
Keyword(s):  
Lake Victoria ◽  
Fish Production ◽  
Production Potential ◽  
Seasonal Flood ◽  
Papyrus Wetlands

scholarly journals Freshwater Integrated Multitrophic Aquaculture (FIMTA) technology in Lake Victoria

2021 ◽  
Author(s):  
Nicholas Outa
Keyword(s):  
Lake Victoria ◽  
Fish Production ◽  
Annual Fish ◽  
Pond Aquaculture ◽  
The World ◽  
Cage Aquaculture ◽  
Negative Impacts ◽  
Poly Ethylene ◽  
Outer Water ◽  
Aquaculture Production

The decline in capture fisheries of the world has necessitated the production of fish under different aquaculture systems to bridge the gap in demand. Aquaculture contributes about 50% of fish consumed worldwide. Today, the total annual fish production in Kenya is estimated at about 150,000 metric tons, against an annual demand of 500,000. With the ever-increasing human population and demand for fish, technologies to improve aquaculture production must be embraced to bridge fish supply gap and to achieve nutritional sufficiency. One of these technologies is cage aquaculture which is the rearing of fish(es) in water bodies like dams, lakes, ponds and reservoirs in floating enclosures that allow free flow and exchange of water between the cage the outer water body. The frames of the cages can be made from bamboo, metal or High-Density Poly Ethylene (HDPE). With the challenges associated with pond aquaculture such as competition for land with other uses and susceptibility to floods, cage aquaculture has gained recognition and is rapidly expanding in Kenya and the world over. In Kenya, for example, the use of cages to produce fish is relatively new and is being practised in Lake Victoria in the five riparian Counties of Migori, Homabay, Kisumu, Siaya and Busia (Anjejo, 2017). These cages have several negative impacts on the lakes environment as highlighted below.

scholarly journals Benutting van landbouneweprodukte en gesuiwerde rioolwater in akwakultuur in ontwikkelende gebiede van Suid-Afrika

1993 ◽  
Vol 12 (3) ◽  
pp. 72-79 ◽  
Author(s):  
J. F. Prinsloo
Keyword(s):  
South Africa ◽  
Production Systems ◽  
Trophic Levels ◽  
Fish Production ◽  
Production Potential ◽  
Integrated Aquaculture ◽  
Treated Sewage ◽  
Treated Sewage Effluent ◽  
Agriculture Systems

The serious shortage of potable water supplies for domestic, agricultural and industrial requirements necessitates an investigation into the optimal utilization of this scarce commodity in South Africa. The multipurpose use of water in agriculture through its effective utilization in integrated aquaculture-agriculture food production systems is one way of optimising the application of such water. In the present series of investigations, agricultural wastes such as chicken, cattle and duck manure were applied as organic nutrient in freshwaterfish ponds with and without supplementary feeds. Fish used in polyculture production for the optimal utilization of the various trophic levels in manured fishpond ecosystems included the European and Chinese carp species and the sharptooth catfish. Supplementary food consisted of 18-45% protein fish pellets. As an alternative to organic manures, treated sewage effluent with fish pellets was used to evaluate its fish-production potential. Fish species used in monoculture and polyculture production included the European common carp and the sharptooth catfish. The role of water temperature on the fish-production potential of these systems was also investigated. The possible value of integrated aquaculture-agriculture systems in protein production in rural community development in South Africa is discussed.

Tools for Wetland Ecosystem Resource Management in East Africa: Focus on the Lake Victoria Papyrus Wetlands

2006 ◽  
pp. 97-121 ◽  
Author(s):  
Steven Loiselle ◽  
Andres Cózar ◽  
Anne van Dam ◽  
Frank Kansiime ◽  
Peter Kelderman ◽  
...  
Keyword(s):  
Resource Management ◽  
East Africa ◽  
Lake Victoria ◽  
Wetland Ecosystem ◽  
Papyrus Wetlands

Papyrus wetlands creation, a solution to improve food security and save Lake Victoria

2013 ◽  
Vol 21 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Yustina Kiwango ◽  
Gadiel Moshi ◽  
Wickson Kibasa ◽  
Bakari Mnaya
Keyword(s):  
Food Security ◽  
Lake Victoria ◽  
Improve Food Security ◽  
Papyrus Wetlands

scholarly journals Estimation of Fish Production Potential with Benthos Biomass Approach in Sumani and Ombilin River of Singkarak Lake West Sumatra

2021 ◽  
Vol 919 (1) ◽  
pp. 012008
Author(s):  
M Dwirastina ◽  
Y C Ditya ◽  
Herlan
Keyword(s):  
Fish Production ◽  
Production Potential ◽  
Testing Laboratory ◽  
Stagnant Water ◽  
Inland Fisheries ◽  
Benthic Biomass ◽  
Average Potential ◽  
West Sumatra ◽  
Alternative Solutions

Abstract The potential for fish production is very important as a necessary material for WPP PD in making policies. Estimation of fishery production potential is adjusted to aquatic ecosystem. The method used differs between running and stagnant water based on the shape of the water. Fishery resources in Indonesia, especially inland fisheries, still cannot be managed and utilized optimally and sustainably. The method used in estimating fishery stocks in the watershed is the Leger-Huet method. Research to estimate fish production potential using the benthic biomass approach using the Leger-Huet method was carried out in February, June, and October 2019 in the Sumani River and Ombilin River, Singkarak Lake. The research objective was to determine the estimated value of fish production potential through the benthic biomass approach in the Sumani River (Inlet) and Ombilin River (Outlet), Singkarak Lake. The calculation of benthic biomass and fish production potential was carried out at the Testing Laboratory of the Research Institute for Inland Fisheries and Extension in Palembang. This system is expected to be able to provide alternative solutions for decision-making and agencies to determine the potential for fish production in an area. The determination of the potential for fish production using the benthic biomass approach is highly dependent on the width of the river. The results showed that the types of benthos in the Sumani and Ombilin rivers were 5 classes and 17 families. The benthos found by the Ombilin River are more varied than those in the Sumani River, and the estimated fish production potential of the Ombilin River is greater than that of the Sumani River. The highest yield of benthic biomass was found in the Ombilin River (159.06 gr/m2) compared to the Sumani River (76.06 gr/m2). Meanwhile, the average potential fish production in the Batang Sumani River (573.8 (kg/ha) is higher than in the Ombilin River (244.74 kg/ha).

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