Acknowledgements
This study was part of a cooperative research project ‘‘Impact analysis and
improvement of rice – fish farming systems in the semi-deep freshwater area of the
Mekong Delta, Vietnam’’ of the University of Can Tho (Mekong Delta Farming Systems
R&D Institute) and the Catholic University of Leuven (Laboratory of Ecology and
Aquaculture and the Laboratory of Soil Fertility and Soil Biology) with support from the