A patent on a process for making storage - stable edible food materials from kernels of gorgon nuts or fox nut (Euryale ferox) has tremendous impact on biodiversity resulting in triggered mass culture and commercialization of this aquatic macrophyte. Besides ecological impact, it has social and economic impacts too. This paper studied the impact of the patent on biodiversity at micro level. The study reveals that mass culture of these plants in water bodies instead of fishes has created an interlinked ecological, social and economic imbalance.

The present study has been carried out to estimate the phytoplankton diversity of Neyyar and Karamana rivers with special reference to aquatic nutrients. This type of study is relevant since these rivers form the source of water for public distribution system.

A sizable number of macrophytes growing luxuriantly in Kawar lake, the largest one of its kind in Bihar, are utilized by the native folk for food (Euryale ferox, Ipomoea aquatica, Nelumbo nucifera, Nymphaea nouchali, Nymphaea sp. - a probable hybrid, Cyperus rotundus), fodder (Commelina benghalensis, Cynodon dactylon, Cyperus iria, C. rotundus, Echinochloa colonum, E.

A pilot study was undertaken to assess the potential fertility of lentic waters and to ellucidate the ecology of aquatic flora. In addition, studies were performed at microcosmal level and the results, so obtained, were applied at field level, to forsee the impact of nutrients on natural waters.

During the last hundred years or so, deforestation and wind-water borne soil erosion have been steadily increasing and have now become the major environmental problems the world over.