Feature Article

Dam building activity in India got impetus and priority, after India became Independent. Total dams built in India up to year 2002 were about 4050. Maharashtra state has the largest number of large dams in India.

This paper deals with two methods of obtaining 50Hz sinusoidal voltage waveform of constant amplitude same as the amplitude of grid voltage from a variable amplitude variable frequency sinusoidal voltage waveform so that a variable speed wind turbine generator can be joined to grid.

To carry out present study, ecotourism auditing survey has been used as a potential tool in ecotourism with special reference to assess visitor's management in Soor Sarovar Bird Sanctuary, Agra.

Amphibians watched the dinosaurs come and go, but today almost half of them are threatened with extinction. In 2010, Zoological Survey of India has documented a total of 311 amphibian species in India. Out of these 46 amphibian species are found in all 19 districts of West Bengal.

This is the first formal attempt to update the list of spiders described from states of Madhya Pradesh and Chhattisgarh. The World Spider Catalogue by N. I. Platnick is followed to compile the list.

Poplar plantations and nurseries mainly grown on farm land in North India create thick patches of green cover which attract wild animals, birds and rodents for hideout, shelter and food. Many of the visiting wildlife also cause serious damage to poplar both in field plantations and nurseries. The main wild animals and birds causing damage have been identified as blue bull, monkeys, rats, rabbits, crows, parrots etc.

During preliminary investigation of spiders in Milam Valley, Nanda Devi Biosphere Reserve, the authors documented a total of 86 species/morphospecies under 39 genus and 16 families. Spider fauna in the valley was rich and diverse.

62 species belonging to 43 genera representing five families of the order Lepidoptera were recorded from Sunabeda Wildlife Sanctuary, Orissa.

Birds of Karlapat Wildlife Sanctuary were studied from January 2009 to June 2009, based on observational method. A total of 123 birds were recorded representing 49 families of 15 orders.

The complex interaction of environmental stress, poor natural regeneration and insect pests have lead to forest decline in Himalayan sub-region. Amongst the insects, stem and wood boring beetles are capable of causing significant oak mortality. The paper reports the outcome of surveys on wood boring beetles carried out in moist temperate oak forests, mainly with Ban oak, Quercus leucotrichophora Camus, Moru oak, Q. dilatata Lindl and Q. semicarpifolia Smith in six sites in the Garhwal region of Uttarakhand, India.