Water Salinisation

Climate change induced salinity affecting soil across coastal Bangladesh

With the consequence of climate change, it gradually extends towards inland water and soil. This scenario of gradual salinity intrusion into the coastal areas of Bangladesh is very threatening to the primary production system, coastal biodiversity and human health, said researchers. The total amount of salinity affected land in Bangladesh …

Examining India’s groundwater quality management

Until the 1940s, the irrigation and drinking water needs of India were met by rivers, ponds, lakes, dugwells, and rainwater sources. However, in the middle of the 20th century India continually faced two daunting challenges: providing food for an ever-growing population and decreasing the burden of highly prevalent water-borne diseases, …

Strategies for arresting land degradation in South Asian countries

Land degradation, synonymous to desertification in arid, semi arid and sub-humid region, covers the processes adversely affecting productive capacity of land under different land use systems. Present paper reports the extent, type and severity of land degradation in south Asian countries. Impact of land degradation contributing factors including population and …

The harbour divide

ON NOVEMBER 18, there was a dust-up between farmers and fishers at Murthikuppam in Puducherry’s Bahour Commune over who would get to talk to the environment ministry’s representative visiting the area. The representative from the ministry’s Bengaluru regional office, U Sridharan, was there to seek views on the partially constructed …

Vulnerability of the Sundarbans ecosystem

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 …

Stable oxygen, hydrogen isotope ratios and salinity variations of the surface Southern Indian Ocean waters

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 …

Fifty-year trends in global ocean salinities and their relationship to broad-scale Warming

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 …

Environmental isotopes investigation in groundwater of Challaghatta valley, Bangalore: A case study

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. The variations between TDS and EC values of sewage, corporation water, bore and …

Get the salt out

There's no shortage of water on the blue planet

Influence of anthropogenic activities on the existing environmental conditions of Kandla Creek (Gulf of Kutch)

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. Principal Component Analyses …

Salinity rise in Indian mangroves a looming danger for coastal biodiversity

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 …

Sea water seeps into Godavari

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. According to ground …

Chemical imbalance

The waters in the Sunderban delta are fast changing in quality. The western waters are fresher, lighter and less saline while the eastern sector is saltier and less transparency. Both are warmer—a sure consequence of climate change. Abhijit Mitra’s team from the department of marine science in the University of …

Global warming victims not heard in Copenhagen

Ratan Mondol, 86, is one of the first environmental refugees from the Sunderbans. Old and bent, Mondal recalls how the rising sea destroyed his life.

Impact of salinity on mangroves of Indian Sundarbans

The above ground biomass (AGB) and carbon stock of Excoecaria agallocha were estimated in western and central Indian Sundarbans for five successive years (2005-2010). The two sectors are drastically different with respect to salinity on account of massive siltation that prevents the flow of fresh water of the River Ganga …

Participatory rice variety selection in Sri Lanka

Hambantota District is a major paddy (rice) producing area in the southern coastal region of Sri Lanka. Communities here have been experiencing salt water intrusion into their rice fields, leading to reduced yields. This has been caused largely by seawater contamination of irrigation systems. Farmers had been using saline-resistant varieties …

Observed changes in water mass properties in the Indian Sundarbans (northwestern Bay of Bengal) during 1980-2007

We present evidence that the Indian Sundarbans is experiencing the effects of climate change over the last three decades. Observations of selected variables, such as the surface water temperature, salinity, pH, dissolved oxygen, and transparency show significant long-term variation over a period of 27 years (1980

Salinity ingress worries govt

Rajiv Shah | TNN Gandhinagar: An authoritative report put out by the Gujarat government has expressed serious concern over failure of the officialdom to fight increasing salinity ingress along the state

Coastal home owners face huge losses from rising sea

Australians Lesley and Doug McGrath have for decades battled ocean swells that have eaten away at the backyard of their multi-million dollar Sydney home. They bought an old beach shack on Collaroy Beach in 1976 and replaced it with a two storey home anchored to the land by 12 meter …

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