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dc.creatorKaunda, E.en_US
dc.creatorSalima, C.en_US
dc.creatorMacuiane, M.A.en_US
dc.creatorMsiska, O.V.en_US
dc.date.accessioned2024-04-02T13:58:42Z
dc.date.available2024-04-02T13:58:42Z
dc.date.issued2024en_US
dc.identifier.citationE. Kaunda, C. Salima, M. Macuiane, Orton Msiska. (1/1/2024). Feasibility of Cage Culture on Lake Malawi, Part 1: Physical, Chemical and Biological Processes. European Journal of Applied Sciences, 11.en_US
dc.identifier.issn2634-9221en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12348/5888
dc.description.abstractThe feasibility of cage culture in Malawi was fully evaluated using standard procedures involving a sub-model of dissolved oxygen and phosphorus budget models to compute carrying capacities in relation to bathymetric features. The central lakeshore district of Salima was used as a proxy for other parts of Lake Malawi. The values of carrying capacity varied from 4-5 tons for small cages (5m diameter by 3m depth) to 14-17 tons for large cages (10 m diameter x 6 m depth); this compares favorably with 18-22 tones from cages of 12 m diameter x 8 m depth produced by MALDECO Ltd. One site, Sani Maganga was found to be unsuitable because of an inverse relationship between dissolved oxygen and the water depth. On the other hand, values of 61-67 tons for medium cages and 79-86 tones for large cages, respectively, were computed using the phosphorus model, suggesting that this method may be inappropriate for Lake Malawi in its current form. The close correlation between actual and computed values in the dissolved oxygen model demonstrates its relevance. In future, dissolved oxygen should be measured at several depths with water temperature to determine oxygen saturation which is important to fish feed utilization. The phosphorus model needs to be fine-tuned, since it was derived on Trout fish farm modeling in temperate waters; water temperature/oxygen saturation and metabolic rates may be sources of variation. The recommended threshold of 70 ugL-1for phosphorus concentration could still be used. Unsuitable conditions at San Maganga, show that conditions vary from site to site and detailed studies are necessary. Therefore, current findings are not safe to generalize for the whole Lake Malawi.en_US
dc.formatPDFen_US
dc.languageenen_US
dc.publisherSCHOLARPUBLISHINGen_US
dc.rightsCC-BY-4.0en_US
dc.sourceEuropean Journal of Applied Sciences;11,(2023)en_US
dc.subjectenvironmental carrying capacitiesen_US
dc.subjectlake malawi-salimaen_US
dc.subjectphysical featuresen_US
dc.titleFeasibility of Cage Culture on Lake Malawi, Part 1: Physical, Chemical and Biological Processesen_US
dc.typeJournal Articleen_US
cg.contributor.funderAfrican Development Banken_US
cg.contributor.projectSustainable Capture Fisheries ,Aquaculture Development and Watershed Management Projecten_US
cg.coverage.countryMalawien_US
cg.coverage.regionEastern Africaen_US
cg.subject.agrovoccage cultureen_US
cg.subject.agrovocnutrient statusen_US
cg.subject.agrovocfishen_US
cg.contributor.affiliationLilongwe University of Agriculture & Natural Resourcesen_US
cg.contributor.affiliationWorldFishen_US
cg.contributor.affiliationFundo de Desenvolvimento da Economia Azulen_US
cg.identifier.statusOpen accessen_US
cg.contribution.worldfishauthorMsiska, O.V.en_US
cg.description.themeSustainable aquacultureen_US
dc.identifier.doihttps://dx.doi.org/10.14738/aivp.116.15199en_US
cg.subject.sdgSDG 1 - No povertyen_US
cg.subject.sdgSDG 2 - Zero hungeren_US
cg.subject.sdgSDG 14 - Life below wateren_US
cg.subject.impactAreaNutrition, health and food securityen_US
cg.subject.impactAreaEnvironmental health and biodiversityen_US


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