Mw. Beatriz Torres Beristain : Organic matter decomposition in simulated aquaculture ponds

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15 Apr 2005 13:30
Unit: Wageningen University
Location: Aula (gebouw 362), Gen. Foulkesweg 1, Wageningen
Promotor: prof.dr.ir. J.A.J. Verreth (Fish Culture and Fisheries)
Co Promotor: dr. M.C.J. Verdegem

 Different kinds of organic and inorganic compounds (e.g. formulated food, manures, fertilizers) are added to aquaculture ponds to increase fish production. However, a large part of these inputs are not utilized by the fish and are decomposed inside the pond.
The microbiological decomposition of the organic matter is a critical factor for water quality control and nutrient recycle. Usually, management practices are developed to control the survival and health of the cultured animals and to maintain good water quality. The microbiological processes are affected by these practices but unintentionally. A better control of culture conditions and sustainability of aquaculture ponds is possible with an improvement of the microbiological processes.
The present thesis focus on the decomposition of organic matter under different conditions related with management practices applied in aquaculture ponds as resuspension and oxygen availability. Controlled lab scale microcosm experiments were conducted simulating the conditions of an intensive fish-less intensive aquaculture pond with daily feeding rates.
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