Contents: Preface. I. Perspectives in aquatic biology : 1. Aquatic biology : ecological perspectives/Lalji Singh & J.S. Singh. 2. Aquatic pollution and fisheries in India/S.M. Das. 3. Role of aquatic fauna and flora in human welfare/R.S. Tandon. 4. Performing fungi/R. Dayal. 5. Strategies in reproduction of potamogetonaceae, najadaceae and zannichelliaceae/Tripat Kapoor & M.R. Vijayaraghavan. 6. Glimpses on water-borne conidial fungi from India/C. Manoharachary. 7. Perspectives in periphytic study/M.N. Madhyastha & I.J. Rao. 8. Eutrophication of lakes/D.P. Zutshi. 9. Weeds and environmental hazards/N. Sreenivasan.

II. Microbes and their activities : 1. Aquatic fungi from Jabalpur (Madhya Pradesh)/G.P. Agarwal, S.K. Hasija & R.P. Mishra. 2. Influence of fungi on palatability of leaves/A.P. Chaturvedi & R. Dayal. 3. Two interesting chytrids from Maharashtra/M.B. Vaidya. 4. Distribution of myxophyceae in lakes of Mysore/E.T. Puttaiah & R.K. Somashekar. 5. Pathogenicity of pythium species to seeds and seedlings of tomato (Lycopersicon esculentum Mill.)/B.L. Verma & R.D. Khulbe. 6. Consideration about the composition of planktonic algal flora in Nandan Kanan lake/A.A.K. Chatterjee & R.C. Mohanty. 7. Effect of rainfall on seed-borne diseases of bean in Kumaun hills/M.C. Sati, A.P. Dhyani & R.D. Khulbe.

III. Ecology : 1. Ecology and conservation of Dal lake in Kashmir/V. Kaul. 2. Energy dynamics of macrophytes at up and down streams of River Ganga at Varanasi/R.S. Ambasht & A.K. Srivastava . 3. Relationship between physico-chemical features of water sediment and macrophytic crop of the lake Naini Tal, Kumaun Himalaya/Rekha Purohit. 4. Impact of urban waste water on the primary production and nutrient status of Hydrilla verticillata (L.F.) royle/Shardendu & R.S. Ambasht. 5. Physico-chemical parameters in relation to aquatic entomofauna of River Bhagirathi and Bhilangana, Tehri-Garhwal, Himalaya/Man Mohan, R.S. Bisht & S.M. Das. 6. Physio-limnological analysis of Sat Tal lake basin, Kumaun Himalaya, U.P. India/L.S. Khanka.

IV. Pollution : 1. Quality of lentic water resources in South-Western Maharashtra, India/R.K. Trivedy, P.K. Goel, A.C. Shrotri, M.R. Ghadge & S.D. Khatavkar. 2. Pollution of drinking water with moulds and bacteria in Chandigarh/G.S. Rawla, I.B. Prasher, R. Khurana and K. Ramanjit. 3. A general survey of sewage microflora of Varanasi City/Bharat Rai, Ruby Srivastava and A. Kumar. 4. Training of some fungi to heavy metals--a feasible way of monitoring metal pollution in aquatic environment/S. Lokesh & R.K. Somashekar. 5. Bioassay study of some idustrial effluents using a green alga Scenedesmus sp./A.S. Ahluwalia, M. Kaur and S. Dua. 6. Water pollution in Naini Tal Lake--a survey/R.D. Khulbe, M.C. Sati and A.P. Dhyani. 7. Bacteriological studies on water samples taken from Maharishi nagar and Gaula river catchment/L.S.B. Bisht, N.B. Brindavanam, G.S. Verma, A. Shah and G.B. Kimothi. 8. Studies on Rhizosphere mycoflora of certain vegetables in relation to sewage farming/A.R. Ansari and B.P. Tamta. 9. Studies on algae of polluted ponds of Kanpur (India): X. effect of turbidity on algae/A.K. Tripathi and S.N. Pandey. 10. Mentha as a water purifier/G. Bisht. 11. Diseases of vegetables irrigated by sewage water of Naini Tal/A.P. Dhyani, M.C. Sati and R.D. Khulbe. 12. Studies on fungal diseases of cabbage in relation to quality of water in Nainital area/P. Harbola and R.D. Khulbe.

V. Fisheries : 1. Development of coldwater fisheries in Kumaun waters : problems and prospects/C.B. Joshi. 2. Fungal diseases of fish/G.C. Srivastava. 3. Biological control of fish parasitic watermolds in some aquatic habitats of India/R.D. Khulbe. 4. Fish and fisheries of the river Mandakini/A.K. Dobriyal and Neeraj Kumar. 5. Impact of water use development project on river wildlife particularly gangetic dolphin--I: proposed Karnali High Dam project/T.K. Shrestha. 6. Harvestable size of Golden Mahseer (Tor putitora Ham.) for its conservation/M.S. Johal and J.S. Kingra. 7. Observations on the histo-pathology of the vital organs of carassius carassius L. Parasitized by Ichthyophonus hoferi Plehn & Mulsow/S.K. Prabhuji. G.C. Srivastava and S.K. Sinha. 8. Piscicidal activity of some indigenous plants/R.T. Mahajan, S.M. Chaubey and S.M. Jawale. 9. Some aspects of biochemistry of the venerid clam, Sunutta scripta (Mollusca : Bivalvia)/T. Sharadha, J. Tagore and R. Kasinathan. 10. Effect of starvation on biochemical composition of the muricid gastropods/J. Tagore, T. Sharadha and R. Kasinathan.

VI. Hydrophytes : 1. Aquatic angiosperms of Silent Valley : tropical rain-forests of South India/K.S. Manilal. 2. Aquatic ferns of Western Himalaya/S.P. Khullar and Anju Sharma. 3. Aquatic and marshy angiospermic plants of Naini Tal, Kumaun Himalaya/S.S. Samant, R.S. Rawal and Y.P.S. Pangtey. 4. A contribution to the aquatic and marshy plants of Almora district/P.C. Pande. 5. Hydrophytic flora of manu swamp : a tropical fresh water swamp at Rishikesh (Dehradun), U.P./J.C. Ghildiyal and M.M. Srivastava. 6. A systematic survey of the hydrophytes of Chhatarpur district (M.P.) with special emphasis on their utility and ecology/Bhaskar Datt.

VII. Water resources : 1. Water resources of India : their appraisal, conservation and management/S.L. Kayastha. 2. Water resources of Kumaun/D.S. Jalal. 3. Increasing population and decreasing water resources in the hills (an economic foreshadow)/S.S. Khanka. 4. Deteriorated aquatic environment of kotadun : Kumaun Himalaya(geomorphological outlook)/R.C. Joshi, B.R. Pant and D.S. Jalal. 5. Effect of pine oak forest's litter on evaporation and water conservation in Kumaun hills/S. Kumar and K.R. Verma. 6. Water management in Kotadun : Kumaun Himalaya/B.R. Pant, R.C. Joshi and D.S. Jalal. 7. Capacity of channel runoff in the pine forested central lesser Himalayan watershed/M.S. Rawat and J.S. Rawat. 8. Towards an epistemology of environmental sciences/M. Joshi and J.S. Rawat. 9. A survey on water resources and human activities in certain areas of Kumaun hills/J.P.S. Manral and R.S. Negi. 10. Management of aquatic bodies--Indian context/S.P. Singh. Author's index. Subject index.

[R.D. Khulbe is a Senior Reader in the Department of Botany at Kumaun University, Nainital.]

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