FI:DP/IND/75/031 Field Document 6 November 1983 |
A report prepared for the
Intensification of freshwater culture
and training project
by
J. Olah
Consultant (Pond Microbiology)
This is one of a series of reports 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
Rome, 1983
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1.1 Terms of Reference
1.2 Background Information
2. DEVELOPMENT OF ROUTINE MONITORING SYSTEMS FOR PONDS
3. GENERAL MORPHOMETRY OF UNDRAINABLE RURAL FISH PONDS
4. NATURAL FISH FOOD RESOURCES IN UNDRAINABLE RURAL FISH PONDS
5. MICROBIOLOGICAL INVESTIGATIONS
5.1 Total Bacterial Count
5.2 Preparation of Media for Bacterial Culture
6. BACTERIAL DECOMPOSITION AND NUTRIENT RECYCLING IN UNDRAINABLE RURAL FISH PONDS
7. CHEMICAL AND BIOCHEMICAL INVESTIGATIONS
7.1 Chemical Method
7.2 Community Metabolism
8. PARTITION OF THE TOTAL COMMUNITY RESPIRATION
8.1 Decomposition of Model Substrates
8.1.1 Sediment nutrient release
8.1.2 Amino acid uptake
8.1.3 Ammonia and nitrate uptake
8.1.4 Nitrogen fixation
8.1.5 Nitrification
8.1.6 Denitrification
9. CHEMICAL ENVIRONMENT AND NUTRIENT STATUS IN UNDRAINABLE RURAL FISH PONDS
LIST OF TABLES
1. DATA EVALUATION SHEET FOR PERENNIAL POND
2. MAIN GROUPS OF BACTERIA TAKING PART IN THE MINERALIZATION PROCESS IN THE POND
3. MAIN CHARACTERISTICS OF THE SURVEYED RURAL PERENNIAL PONDS USED FOR FISH CULTURE
5. PLANKTONIC FISH FOOD COMPARTMENTS
6. DOMINANT GROUPS OF ORGANISMS IN PHYTOPLANKTON, ZOOPLANKTON, ZOOBENTHOS AND ZOOTECTON COMMUNITIES
7. SEDIMENT FISH FOOD COMPARTMENTS
8. DECOMPOSITION OF WATER HYACINTH AND CELLULOSE IN THE WATER AND SEDIMENT LAYERS OF POND 1
15. CHEMICAL ENVIRONMENT AND NUTRIENTS IN THE SEDIMENT LAYERS OF OLD UNDRAINABLE POND 1
16. DIEL CHANGE OF INORGANIC NUTRIENTS IN THE WATER LAYERS OF POND 1 ON 10 MARCH 1983, μg dm-3
17. DIEL CHANGE OF OXYGEN CONCENTRATION IN THE WATER LAYERS OF POND 1, mg dm-3
18. DIEL CHANGE OF TEMPERATURE IN THE WATER LAYERS OF POND 1, °C