Field Document 8
A report prepared for the
Intensification of Freshwater Fish Culture and Training Project
Consultant (Pond Microbiology)
This report was prepared during the course of the project identified on the title page. The conclusions and recommendations given in the report are those considered appropriate at the time of its preparation. They may be modified in the light of further knowledge gained at subsequent stages of the project.
The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the United Nations or the Food and Agriculture Organization of the United Nations concerning the legal or constitutional status of any country, territory or sea area, or concerning the delimitation of frontiers.
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
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1.1 Terms of Reference
1.2 Background Information
1.3 Evaluation of Research Work in 1983–84
1.4 Suggestions for Further Research
1.5 Aspects of Research Consultancy
2. DETERMINATION OF NITROGEN FIXATION IN LAKE WATER
2.2 Necessary Equipment
3. DETERMINATION OF NITROGEN FIXATION IN LAKE SEDIMENT
3.1 Necessary Equipment
4. DETERMINATION OF AMMONIA AND NITRATE UPTAKE IN LAKE WATER WITH ENZYME KINETICS
4.2 Material Required
5. DETERMINATION OF DENITRIFICATION IN LAKE WATER WITH ACETYLENE INHIBITION METHOD
5.2 Necessary Equipment
6. DETERMINATION OF DENITRIFICATION IN LAKE SEDIMENT WITH ACETYLENE INHIBITION METHOD
6.1 Necessary Equipment
6.4 Determination of N2O Content of Gas Phase
7. DETERMINATION OF THE ACTUAL DIFFUSION OF NUTRIENTS AT THE SEDIMENT WATER INTERFACE
7.2 Necessary Equipment and Chemicals
8. DETERMINATION OF POTENTIAL DIFFUSION OF NUTRIENTS AT THE SEDIMENT WATER INTERFACE
8.2 Necessary Equipment and Chemicals
Appendix 1: PRIMARY PRODUCTION AND RELATED FISH YIELDS IN FISH PONDS WITH VARYING MANAGEMENT PRACTICES
Appendix 2: COMMUNITY METABOLISM IN TROPICAL UNDRAINABLE RURAL FISH PONDS
Appendix 3: SEDIMENT OXYGEN CONSUMPTION IN TROPICAL UNDRAINABLE FISH PONDS
Appendix 4: DETRITUS ASSOCIATED RESPIRATION DURING MACROPHYTE DECOMPOSITION