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TITLE
DEDICATION
DECLARATION
CERTIFICATE
ABSTRACT
KEYWORDS
ABBREVIATIONS
ACKNOWLEDGEMENT
LIST OF PAPERS PUBLICATION / COMMUNICATED
SEMINAR PRESENTATIONS
CONTENTS
LIST OF TABLES
LIST OF CHARTS
LIST OF FIGURES
LIST OF PLATES
1. INTRODUCTION
1.1. Introduction of the problem
1.2. Water, the elixir of nature
1.3. Global freshwater resources
1.4. Freshwater resources in India
1.5. Freshwater resources in the Western Ghats
1.6. The Periyar Lake
1.7. Significance of the study
1.8. Objectives of the study
1.9. Important findings and achievements
2. REVIEW OF LITERATURE
2. 1. Introduction
2.2. Ecology of major freshwater resources of the world
2.3. Major themes in Ecology of freshwater
2.4. Impact of tourism on aquatic systems
2.5. Major fresh water resources in India
2.6. Freshwater ecosystems in the Western Ghats
2.7. The Periyar Lake
3. MATERIALS AND METHODS
3.1. The Periyar Lake
3.2. Field stations
3.3. Climate and environmental characteristics of the Lake
3.4. Field visit and sample collections
3.5. Water sample collections
3.6. Field measurements
3.7. Laboratory water analysis
3.8. Other data collected and Statistical analysis done
4. RESULTS
4.1. Introduction
4.2. Climate and water dynamics of the Lake system
4.3. General physico-chemical water quality parameters
4. 4. Organic waste in the Lake
4.5. Major inorganic ions in the water
4. 6. Nutrient status of the Lake
4.7. Oil and Grease in surface water
4. 8. Primary Productivity of surface water in the Lake
4. 9. Microbiology of water
4. 10. Hydrobiology
4.11. Correlations- phytoplankton density and water quality parameters
4. 12. Correlations- Phytoplankton groups density and water quality parameters
5. DISCUSSION
5. 1. Introduction
5.2. Climate of the area and hydrology of the Lake
5. 3. Physico-chemical parameters
5. 4. Major cations in the water
5. 5. Major anions in the water
5. 6. Major Nutrients in the water
5. 7. Organic waste in the Lake
5. 8. Oil and Grease due to boat activity
5. 9. Conclusion on physico-chemical parameters
5.10. Coli form Bacteria in the Lake
5. 11. Primary Productivity in the Lake
5.12. Diversity and dynamics of phytoplankton
5.13. Periphyton
5. 14. Benthon
5.15.Correlations- phytoplankton density and water quality parameters
5.16. Conclusion - Phytoplankton density and water quality parameters
6. GENERAL CONCLUSION
6. 1. Introduction
6. 2. Climate and hydrology
6. 3. Physico-chemical parameters
6. 4. Major cations and anions in the Lake
6. 5. Major nutrients in the Lake
6. 6. Primary production
6. 7. Pollution in the Lake
6. 8. Diversity and dynamics of phytoplankton
6. 9. Phytoplankton community structure in the Lake
6. 10. Periphyton
6. 11. Benthon
6.12. Conclusion
BIBLIOGRAPHY
FIGURES AND PLATES
Fig.-1, Area wise distribution of fresh water reservoirs in India after Sugunan (1 997)
Fig.-2: Western Ghats region of India after National Atlas Organisation Physiographic Map adapted from State Gazetteer (1 986)
Fig.-3: Different study stations in Periyar Lake
Plate - 1: Boat landing site - the PLS-1: Seasonal views of three - years (Southwest monsson 2002 to pre-monsoon 2005)
Plate -2 Tourist impacts at the PLS -1
Plate -3: Field stations in the Lake
Plate - 4: Euglelophyta of the Lake
Plate - 5: Cyanophyta (Blue-Green algae) of the Lake
Plate - 6: BaciIIariophyta (Diatoms) of the Lake
Plate - 7: Chlorophyta - Chlorococcales of the Lake
Plate - 8: Chlorophyta - Zygnematales (Desmids) of the Lake
Plate - 9: Pollution in the lake