Buch, Englisch, 150 Seiten, Format (B × H): 178 mm x 254 mm, Gewicht: 370 g
Fingerponds: Managing Nutrients & Primary Productivity For Enhanced Fish Production in Lake Victoria's Wetlands Uganda
1. Auflage 2007
ISBN: 978-0-415-41697-9
Verlag: Taylor & Francis Ltd
Managing Nutrients and Primary Productivity for Enhanced Fish Production in Lake Victoria's Wetlands, Uganda
Buch, Englisch, 150 Seiten, Format (B × H): 178 mm x 254 mm, Gewicht: 370 g
ISBN: 978-0-415-41697-9
Verlag: Taylor & Francis Ltd
Fingerponds are earthen ponds dug at the edge of natural wetlands and stocked naturally with wild fish during flooding. They preserve the wetland environment in which they are situated while maintaining a productive culture system. In this study, the importance of organic manure applications in enhancing nutrient levels, phytoplankton and periphyton productivities and ultimately fish production was examined in experimental Fingerponds set up with the participation of local communities in Uganda. Results show that organic manures enhance algal development and fish production in Fingerponds, but close monitoring and control are needed. Fish yields in Fingerponds can be enhanced to 1500 - 2800 kg/ha over a functional period of 200 to 300 days using animal manure (e.g. chicken), fermented green manure and artificial substrates for periphyton development. Good management practices are required to regulate pond inputs and conditions. High clay turbidity, nitrogen limitation and high recruitment of fish can limit fish production. Overall, Fingerponds were shown to be an effective addition to protein production for poor riparian communities in East Africa and are recommended for adoption.
Zielgruppe
Postgraduate and Professional
Autoren/Hrsg.
Fachgebiete
Weitere Infos & Material
Abstract Chapter 1 The role of natural wetlands in enhancing food security - a general introduction Chapter 2 Fringing wetlands on the northern shores of Lake Victoria, Uganda and their potential for fish culture Chapter 3 Organic manuring in Fingerponds: effects on phytoplankton primary productivity and water quality and implications for management Chapter 4 The use of artificial substrates in turbid seasonal wetland fish ponds 'Fingerponds' in Uganda and their effects on water quality Chapter 5 Fish production in periphyton-based organically manured seasonal wetland fish ponds 'Fingerponds' in Uganda Chapter 6 Parameterization and calibration of a model for fish production in seasonal wetland fish ponds ('Fingerponds') Chapter 7 General discussions and conclusions, Summary.
