Your search found 8 records
1 Saifuk, K. 2004. Appropriate treatments for land reclamation of salt-affected shrimp ponds. In Eswaran, H.; Vijarnsorn, P.; Vearasilp, T.; Padmanabhan, E. (Eds.). Innovative techniques in soil survey: Developing the foundation for a new generation of soil resource inventories and their utilization. Bangkok, Thailand: Land Development Department. pp.197-204.
(Location: IWMI-HQ Call no: 631.4 G000 ESW Record No: H037559)
2 Rodolfo, K. S.; Siringan, F. P. 2006. Global sea-level rise is recognised, but flooding from anthropogenic land subsidence is ignored around northern Manila Bay, Philippines. Disasters, 30(1):118-139.
(Location: IWMI-HQ Call no: P 7486 Record No: H038201)
3 WHO. 2006. Guidelines for the safe use of wastewater, excreta and greywater: Volume 3 – Wastewater and excreta use in aquaculture. 3rd ed. Geneva, Switzerland: WHO. 140p.
(Location: IWMI HQ Call no: 363.7284 G000 WHO Record No: H040280)
4 van Koppen, Barbara; Shaba, S. 2009. IWRM and Rural Livelihood Project in Dzimphutsi: process documentation. Pretoria, South Africa: SADC/Danida Water Sector Support Programme; Pretoria, South Africa: International Water Management Institute (IWMI). 31p.
(Location: IWMI HQ Call no: e-copy only Record No: H042716)
(0.89 MB)
5 Bunting, S. W.; Little, D. 2015. Urban aquaculture for resilient food systems. In de Zeeuw, H.; Drechsel, Pay (Eds.). Cities and agriculture: developing resilient urban food systems. Oxon, UK: Routledge - Earthscan. pp.312-335.
(Location: IWMI HQ Call no: IWMI Record No: H047264)
(50.6 MB)
(Location: IWMI HQ Call no: 628.3 G000 ARC Record No: H047990)
(0.67 MB)
(Location: IWMI HQ Call no: e-copy only Record No: H048447)
(1.16 MB)
This study assesses the microbial and heavy metal distribution in African catfish (Clarias gariepinus) cultured in waste stabilization pond, and their subsequent suitability for human consumption. Treated wastewater-fed pond (WFP) was used in the culture of the fish with a non-wastewater fed pond (NWFP), fed with ground and rain water as control. Pond water, sediments and fish tissue (gill, liver, gut and skin) samples from both sources were analyzed for pathogens and heavy metal levels. Escherichia coli populations in the sediments and water from the WFP exceeded the maximum permissible limit by 2–3 log units as expected. Significantly higher levels of pathogen contamination were detected in the gut and skin of fish from the WFP than the NWFP. Heavy metal concentrations in all samples fell within the Food and Agricultural Organization (FAO)/World Health Organization (WHO) and National Oceanic and Atmospheric Administration (NOAA) permissible limits except for iron and cadmium. There were significantly higher heavy metal concentrations in gill and liver than the muscle. Even though iron recorded the highest concentrations in fish tissue, the concentrations (0.1–2.0 mg kg-1) were below the expected daily nutritional requirement (1–2 mg) for humans and pose no toxicological risk. However, catfish from WFP would require precautionary measures such as cooking/grilling prior to consumption to avoid pathogen infection.
(Location: IWMI HQ Call no: e-copy only Record No: H051813)
(5.07 MB)
The agricultural sector is faced with numerous challenges including climate change and water scarcity in many developing countries. In order to address scarcity and improve water use efficiency for rural farmers, fish farming is being integrated with small-scale irrigation. However, there are challenges in how to allocate water between the two farming enterprises. This study explored the capabilities of system dynamics to allocate water between a fish pond and a crop field in Chingale, Malawi using a system dynamic software, Vensim™ PLE. For soil water and pond water, a simple water balance structure was built and connected to the crop growth structure. Simulations run for 125 days corresponding to the maize growth period. Model results are similar to the actual yield (about 3.5 ton/ha for hybrid) and biomass production (about 7 ton/ha) in the area. Results also show it was possible to maintain pond water depth at recommended depths for raising fish: fish stocking (1 m), operation of the pond (1.5–2.0 m) and harvesting of the fish (less than 1.2 m) throughout the maize growing period. While the study did not comprehensively build and simulate fish growth, the use of such simple tools would benefit rural farmers with few resources. Based on the promising capabilities and the results of the tool it is recommended that further comprehensive analysis to fully incorporate all key sub-components affecting crop and fish growth be carried out.
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