Freshwater Ecosystems

State of the Climate in Asia 2024

The World Meteorological Organization’s State of the Climate in Asia 2024 report warns that the region is warming nearly twice as fast as the global average, driving more extreme weather and posing serious threats to lives, ecosystems, and economies. In 2024, Asia experienced its warmest or second warmest year on …

Golf course putting holes in Nal ecology

The 18-hole golf course close to Nal Sarovar, that is driving an unfettered property development near the bird sanctuary, threatens to upset the delicate ecology there. Environmentalists say that the amount of fertilizers, pesticides, fungicides and other chemicals required to maintain this vast, artificially created, landscape is a threat to …

Social and economic considerations in conserving wetlands of indo-gangetic plains: A case study of Kabartal wetland, India

The Kabartal wetland situated in the upper Indo-Gangetic flood plains in northern India is significant because of its hydrological and ecological services, and the socio-economic and cultural values that it represents. Despite being designated as a wildlife sanctuary, this wetland is under threat from anthropogenic pressures. As in the case …

Need for the conservation of wetland ecosystems: A case study of Ansupa Lake (Orissa, India) using remote sensing based data

Freshwater basins are vulnerable to human-induced change for a number of reasons. The change detection study of Ansupa lake, Orissa was carried out by using multi-temporal satellite data clearly indicates the decrease in wetland area. Due to high anthropogenic pressure, the wetland is shrinking day-by-day. Finally, for restoration efforts to …

Indus delta celebrates rains

ON September 22, around 50,000 people gathered at Kharo Chaan, 150 km southeast of Karachi in Pakistan, for quite an unprecedented festival: the Jashn-e-Indus Delta. Politicians and experts paid tributes to the river Indus, diyas (earthen lamps) were floated, a fair number of young men and women even danced in …

Pollutants flood Lake Victoria

Lake Victoria, the world's second largest fresh-water lake, is threatened by uncontrolled flow of pollutants into its waters, researchers warned recently. The lake spreads across Tanzania, Uganda and Kenya. The pollutants could lead to the collapse of the lake's multi-billion fish industry. Release of raw sewage into the lake by …

Goose, polluters of Nevada lake

A new breed of polluter is causing havoc in Lake Tahoe, a freshwater lake in Sierra Nevada, on the border between the us states of California and Nevada. The lake's bed has a two-inch coat of Canadian geese droppings. The bird takes refuge in the lake when they moult their …

Remaining drops: freshwater resources - a global issue

Water resources are vital to all human activities from basic survival to the most complex industrial production. In recent years, a broad set of national and international water issues has begun to receive significant attention. This paper provides a snapshot of current global water issues, assesses the water-related risks and …

Overusing water

here is the message of a recent piece of research: we are extracting too much water from rivers, streams and lakes. The implication is significant: unless there is enough water in the world's rivers to maintain freshwater ecosystems, many economies would collapse, affecting over 1.4 billion people who live in …

Unbalanced sheet

> People are using over 20 per cent more natural resources each year than can be regenerated. The ecological footprint of humankind is increasing. This overdraft will not last long. Carry on stomping In 1999, the Earth had 11.4 billion hectares of productive land and sea space, that is about …

Thinking afresh

Freshwater is the most fundamental natural resource. But its sources are fast dwindling or becoming contaminated throughout the world. At the start of the 21st century, nine countries with around 35 per cent of the world population were believed to have less than 2,000 cubic metres of renewable freshwater available …

Threat of a retardant

freshwater fish in Virginia contain the highest worldwide reported levels of penta bromo diphenyl ether (pbde), a chemical that is commonly added to polyurethane cushions for slowing down fires. The discovery, made by researchers from the us-based Virginia Institute of Marine Science (vims), has raised concerns because pbde is structurally …

Polluted rivers

fifty of the 69 rivers in Europe have poor ecological quality and most European countries have inadequate environmental monitoring systems, a new report states. Water and Wetland Index by the World Wide Fund for Nature ( wwf ) assessed the ability of freshwater systems in 16 European countries to meet …

Storehouse of water

although the importance of Himalaya-Karakoram as the largest storehouse of fresh water in the lower latitudes, and the important role of their snow and ice in maintaining the flows of the Indus, the Ganga and the Brahmaputra during the lean period was well perceived and understood since ancient times, scientific …

Meltdown!

ice in the Pine Island Glacier, which lies in the Antarctic Ice sheet is melting and raising the sea level. This is the first evidence of glacial melting raising the sea levels. "In terms of ice discharge, this is nothing like anyone has seen before,' says Andrew Shepherd, researcher at …

Till the last drop

Half the watershed area of the world's freshwater systems is estimated to have been lost in the twentieth century, as land was converted to agriculture and urban use, or levelled to combat diseases such as malaria. Physical alteration, habitat loss and degradation, water withdrawal, overexploitation, pollution, all contribute to declines …

UNITED NATIONS

The United Nations (UN) has launched a five-year US $25.83 million project in China to promote the use of renewable energy technologies. The United Nations Development Programme has a US $8.8 million stake in the project, and China has invested US $11.5 million. Australia and the Netherlands have provided the …

Small Hydro Power: A tradeoff between local economic development (if and when it happens) and environmental Impact. Who defines the limits for the latter?

Access to Energy and its linkages with poverty alleviation are well established and much talked about around the globe, especially in the developing world. On a recent visit to villages Jaltalla, Kotla and Khunnu- Rudraprayag district, Uttarakhand these linkages seemed abstract in absence of inclusive and integrated approach to development. …

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