FI:DP/IND/75/031
Field Document 6
November 1983
INDIA
A PROGRAMME OF INVESTIGATIONS ON THE HYDROBIOLOGY OF FISH PONDS
TABLE OF CONTENTS

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

Hyperlinks to non-FAO Internet sites do not imply any official endorsement of or responsibility for the opinions, ideas, data or products presented at these locations, or guarantee the validity of the information provided. The sole purpose of links to non-FAO sites is to indicate further information available on related topics.

This electronic document has been scanned using optical character recognition (OCR) software. FAO declines all responsibility for any discrepancies that may exist between the present document and its original printed version.

TABLE OF CONTENTS

1. INTRODUCTION

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

10. CONCLUSIONS

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

4. CONSTRUCTION, BANK RECONSTRUCTION, SEDIMENT EXCAVATION AND MACROPHYTE REMOVAL IN SURVEYED FISH PONDS

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

9. BACTERIAL POPULATIONS REQUIRING VARIOUS CONCENTRATIONS OF ORGANIC MATTER IN THE WATER AND SEDIMENT OF POND 1 IN FEBRUARY 1983

10. BACTERIAL POPULATIONS INVOLVED IN THE CARBON CYCLE IN THE WATER AND SEDIMENT OF POND 1 IN FEBRUARY 1983

11. BACTERIAL POPULATIONS INVOLVED IN THE NITROGEN CYCLE IN THE WATER AND SEDIMENT OF POND 1 IN FEBRUARY 1983

12. BACTERIAL POPULATIONS TAKING PART IN THE DISSOLUTION OF PRECIPITATED INORGANIC PHOSPHATE AND IN THE PROTEIN DECOMPOSITION WITH SULPHIDE PRODUCTION IN THE WATER AND SEDIMENT OF POND 1 IN FEBRUARY 1983

13. VERTICAL DISTRIBUTION OF PROTEIN DECOMPOSERS PRODUCING SULPHIDE AND METHANE-PRODUCING BACTERIAL POPULATIONS IN THE SEDIMENT OF POND 1 IN FEBRUARY 1983, × 103 g-1 WET WEIGHT

14. CHEMICAL ENVIRONMENT AND INORGANIC PLANT NUTRIENTS IN THE WATER OF UNDRAINABLE PONDS DURING JANUARY 1983

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