Ecological diversity in Sunderban is at the threshold of decline. The fragile land here is being swallowed every day by gradual sea level rise, coastal erosion and tropical cyclones. Besides the global cause of sea level rise i.e. thermal expansion of sea water also responsible is the land degrading anthropogenic activity. An unsustainable situation has crept in the deltaic plain when natural capital is being used up faster than it can be replenished.

Stable isotope (? 18O and ? D) and salinity measurements were made on the surface waters collected from the Southern Indian Ocean during the
austral summer (25 January to 1 April 2006) onboard R/V Akademik Boris Petrov to study the relative dominance of various hydrological processes, viz. evaporation, precipitation, melting and freezing over different latitudes.

A number of hydel projects and other schemes diverting water in the Ganga

Using over 1.6 million profiles of salinity, potential temperature, and neutral density from historical archives and the international Argo Program, this study develops the three-dimensional field of multidecadal linear change for ocean-state properties. The period of analysis extends from 1950 to 2008, taking care to minimize the aliasing associated with the seasonal and major global El Niño–Southern Oscillation modes. Large, robust, and spatially coherent multidecadal linear trends in salinity to 2000-dbar depth are found.

Recession of the Himalayan glaciers is a major concern today with IPCC

Radiogenic isotopes (3H and 14C) and stable isotope (18O) together with TDS, EC and salinity of water were used to discriminate qualitative and quantitative groundwater age, probable recharge time, flow respectively in groundwater of Challaghatta valley, Bangalore.

There's no shortage of water on the blue planet

Water characteristics of Kandla creek, monitored seasonally from 2002 to 2006 at four locations (mouth, cargo jetty, oil jetty and junction), indicated significant increases in nutrients, petroleum hydrocarbons (PHc) and phenols from anthropogenic additions, while increases in turbidity, total suspended solids (TSS) and salinity from natural effects.

India has a long coastal line of over 7500 km supporting vast habitats such as lagoons, backwaters, estuaries, coral reefs and mangrove swamps. Among them, the mangrove ecosystem commands the highest importance because of its biological productivity and specialized diversity. After coral reefs, mangrove forests have the highest productivity among the coastal wetlands.

Rajahmundry, March 22: Coastal villages in West Godavari are being plagued by high saline content in their drinking water due to seepage of sea water into the ground water. Sources say that the main reason behind this is excessive quarrying of sand on the Godavari river bed.

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