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Subject: Environment

  • Issues in India’s Cyclone Management

    Context

    The severe cyclones, Tauktae and Yaas, battered India earlier this year. With a rise in the frequency of devastating cyclones, India needs to look at long-term mitigation measures.

    India’s vulnerability

    • The Indian coastline is around 7,500 km; there are 96 coastal districts (which touch the coast or are close to it), with 262 million people exposed to cyclones and tsunamis.
    • The World Bank and the United Nations (2010) estimate that around 200 million city residents would be exposed to storms and earthquakes by 2050 in India.
    • Between 1891 and 2020, out of the 313 cyclones crossing India’s eastern and western coasts, the west coast experienced 31 cyclones, while 282 cyclones crossed the east coast.
    • Among the natural disasters, cyclones constituted the second most frequent phenomena that occurred in 15% of India’s total natural disasters over 1999-2020.
    • According to the Global Climate Risk Index report 2021, India ranks the seventh worst-hit country globally in 2019 due to the frequent occurrence of extreme weather-related events.
    • Increase in frequency: According to India Meteorological Department (IMD), 2013 data frequency of cyclones in the coastal States accounting increased by 7%.
    • Factor’s responsible: Increasing sea surface temperatures in the northern Indian Ocean and the geo-climatic conditions in India are the factors responsible for the increase in frequency.

    Economic cost

    • Between 1999 and 2020, cyclones inflicted substantial damage to public and private properties, amounting to an increase in losses from $2,990 million to $14,920 million in the absence of long-term mitigation measures.
    • India lost around 2% of GDP and 15% of total revenue over 1999-2020.
    • Between 1999-2020, around 12,388 people were killed, and the damage was estimated at $32,615 million.
    • Cyclones are the second most expensive in terms of the costs incurred in damage, accounting for 29% of the total disaster-related damages after floods (62%).
    • In addition, they are the third most lethal disaster in India after earthquakes (42%) and floods (33%).

    Odisha model

    • In the aftermath of the 1999 super cyclone, the Government of Odisha took up various cyclone mitigation measures.
    • These included installing a disaster warning system in the coastal districts, and construction of evacuation shelters in cyclone-prone districts.
    • Other steps were the setting up of the Odisha State Disaster Management Authority (OSDMA), conducting regular cabinet meetings for disaster preparedness, and building the Odisha Disaster Rapid Action Force (ODRAF).

    Way forward

    • Still, Odisha’s disaster management model is inadequate to minimise the economic losses that result from cyclones.
    • Therefore, the Government of India should adopt a few measures to minimise disaster damage and fatalities.
    • Improve warning system: It is imperative to improve the cyclone warning system and revamp disaster preparedness measures.
    • Increase cover under shelterbelt plantation: The Government must widen the cover under shelterbelt plantations and help regenerate mangroves in coastal regions to lessen the impact of cyclones.
    • In addition, adopting cost-effective, long-term mitigation measures, including building cyclone-resilient infrastructure such as constructing storm surge-resilient embankments, canals and improving river connectivity to prevent waterlogging in low-lying areas are important.
    • Disaster resilient power infrastructure: installing disaster-resilient power infrastructure in the coastal districts, providing concrete houses to poor and vulnerable households, and creating massive community awareness campaigns are essential.
    • Coordination between Centre-State: Healthy coordination between the Centre and the States concerned is essential to collectively design disaster mitigation measures.
    • Collective mitigation effort by the Centre and States that can help reduce the fiscal burden of States and also be effective in minimising disaster deaths.

    Conclusion

    Long term mitigation measures are essential to minimise the impact of the disasters such as cyclones.

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  • Delhi’s new Smog Tower

    Ahead of its infamous smog season, Delhi has got a ‘smog tower’, a technological aid to help combat air pollution.

    What are Smog Towers?

    • Smog towers are structures designed to work as large-scale air purifiers. They are fitted with multiple layers of air filters and fans at the base to suck the air.
    • After the polluted air enters the smog tower, it is purified by the multiple layers before being re-circulated into the atmosphere.

    Structure of the Delhi smog tower

    • The structure is 24 m high, about as much as an 8-storey building — an 18-metre concrete tower, topped by a 6-metre-high canopy. At its base are 40 fans, 10 on each side.
    • Each fan can discharge 25 cubic metres per second of air, adding up to 1,000 cubic metres per second for the tower as a whole. Inside the tower in two layers are 5,000 filters.
    • The filters and fans have been imported from the United States.

    How does it work?

    • The tower uses a ‘downdraft air cleaning system’ developed by the University of Minnesota.
    • Polluted air is sucked in at a height of 24 m, and filtered air is released at the bottom of the tower, at a height of about 10 m from the ground.
    • When the fans at the bottom of the tower operate, the negative pressure created sucks in air from the top.
    • The ‘macro’ layer in the filter traps particles of 10 microns and larger, while the ‘micro’ layer filters smaller particles of around 0.3 microns.
    • The downdraft method is different from the system used in China, where a tower uses an ‘updraft’ system — air is sucked in from near the ground, and is propelled upwards by heating and convection.
    • Filtered air is released at the top of the tower.

    Likely impact

    • Computational fluid dynamics modelling suggests the tower could have an impact on the air quality up to 1 km from the tower.
    • The actual impact will also determine how the tower functions under different weather conditions, and how levels of PM2.5 vary with the flow of air.

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  • Melting of the Greenland’s Snow Cover

    Recently the summit of Greenland received rain and not snow. This has sparked fear as scientists are pointing to it as evidence that Greenland is warming rapidly.

    About Greenland

    • Greenland is the world’s largest island located between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago.
    • It is an autonomous territory within the Kingdom of Denmark.
    • Though physiographically a part of the continent of North America, Greenland has been politically and culturally associated with Europe (specifically Norway and Denmark, the colonial powers).
    • The majority of its residents are Inuit, whose ancestors migrated from Alaska through Northern Canada, gradually settling across the island by the 13th century.
    • It has three-quarters of its surface covered with a permanent ice sheet, which is increasingly coming under threat because of climate change.

    Rain at Greenland: The rarest phenomenon

    • At the highest point on Greenland’s ice sheet, the US maintains a Summit Station, a research facility that observes changes occurring over the island as well as in Arctic weather.
    • Researchers observed rain at the normally frigid summit, with the precipitation extending up to Greenland’s southeast coast.
    • The rain, coupled with warm conditions, caused a major melting event at the summit.
    • This led to rapid ice melting running off into the ocean in volumes, thus accelerating global sea-level rise.

    A cause of worry

    • Greenland, which is two-thirds the size of India, already witnessed one of its most severe melting events.
    • It has lost 8.5 billion tons of surface mass in one day– the third such extreme event in the past decade.
    • The UN’s “code red” climate report released last week concluded that the burning of fossil fuels led to Greenland melting in the last 20 years.
    • The rapid melting is also threatening polar bears, which now have to make their way hundreds of kilometers towards Greenland’s interior from the coasts, where they usually find enough food.

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  • India ratifies Kigali Amendment to the Montreal Protocol

    The Union Cabinet has given its approval for ratification of the Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer for phase down of Hydrofluorocarbons (HFCs) by India.

    What is Montreal Protocol?

    • The Montreal Protocol on Substances that Deplete the Ozone Layer is an international agreement made in 1987.
    • It was designed to stop the production and import of ozone-depleting substances and reduce their concentration in the atmosphere to help protect the earth’s ozone layer.
    • It sits under the Vienna Convention for the Protection of the Ozone Layer.

    Objectives

    • The convention was adopted in 1985 and has highlighted the adverse effect of human activity on ozone levels in the stratosphere and the discovery of the ‘ozone hole’.
    • Its objectives are to promote cooperation on the adverse effects of human activities on the ozone layer.
    • It has since undergone nine revisions, in 1990 (London), 1991 (Nairobi), 1992 (Copenhagen), 1993 (Bangkok), 1995 (Vienna), 1997 (Montreal), 1998 (Australia), 1999 (Beijing) and 2016 (Kigali).

    India and the Protocol

    • India became a Party to the Protocol on 19 June 1992 and since then has ratified the amendments.

    What is the Kigali Amendment?

    • It is an international agreement to gradually reduce the consumption and production of hydrofluorocarbons (HFCs).
    • It is a legally binding agreement designed to create rights and obligations in international law.
    • While HFCs do not deplete the stratospheric ozone layer, they have high global warming potential ranging from 12 to 14,000, which has an adverse impact on climate.

    What are the Ozone Depleting Substances?

    Ozone-depleting substances are chemicals that destroy the earth’s protective ozone layer. They include:

    • chlorofluorocarbons (CFCs)
    • halons
    • carbon tetrachloride (CCl4)
    • methyl chloroform (CH3CCl3)
    • hydro Bromo fluorocarbons (HBFCs)
    • hydrochlorofluorocarbons (HCFCs)
    • methyl bromide (CH3Br)
    • bromochloromethane (CH2BrCl)

    Where are they used?

    The main uses of ozone-depleting substances include:

    • CFCs and HCFCs in refrigerators and air conditioners,
    • HCFCs and halons in fire extinguishers,
    • CFCs and HCFCs in foam,
    • CFCs and HCFCs as aerosol propellants, and
    • Methyl bromide for fumigation of soil, structures and goods to be imported or exported.

    Now answer this PYQ:

    Q.Consider the following statements:

    Chlorofluorocarbons, known as ozone-depleting substances are used:

    1. In the production of plastic foams
    2. In the production of tubeless tyres
    3. In cleaning certain electronic components
    4. As pressurizing agents in aerosol cans

    Which of the statements given above is/are correct? (CSP 2012)

    (a) 1, 2 and 3 only

    (b) 4 only

    (c) 1, 3 and 4 only

    (d) 1, 2, 3 and 4

    [wpdiscuz-feedback id=”1wrtcabaix” question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

    Why phase them out?

    Implementation strategy and targets:

    • India will complete its phase-down of HFCs in 4 steps from 2032 onwards with a cumulative reduction of 10% in 2032, 20% in 2037, 30% in 2042, and 80% in 2047.

    Major Impact

    • HFCs phasedown is expected to prevent the emission of up to 105 million tonnes of carbon dioxide equivalent of GHGs, helping to avoid up to 0.5 degrees Celsius of global temperature rise by 2100, while continuing to protect the ozone layer.
    • It will achieve energy efficiency gains^ and carbon dioxide emissions reduction – a “climate co-benefit,”
    • HFCs phrase-down implementation will involve synergies to maximize the economic arid social co-benefits, besides environmental gains.
    • There would be scope for domestic manufacturing of equipment as well as alternative non-HFC and low-global warming potential chemicals to enable the industry to transition to the low global warming potential alternatives as per the agreed HFC phase-down schedule.
    • In addition, there would be opportunities to promote domestic innovation for new generation alternative refrigerants and related technologies.

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  • Second-generation bioethanol: It is time to launch it headlong

    India has been promoting 2G bioethanol to achieve its E20 target.

    What is Bioethanol?

    • Biomass has always been a reliable source of energy.
    • Cultivated biomass has begun to be used to generate bioethanol.
    • They are categorised as first (1G), second (2G) and third-generation (3G), based on the source of raw material used for bioethanol production.

    Its types

    • 1G bioethanol: Raw materials required are corn seeds and sugarcane; both are food sources. There is not enough food for everyone; so the use of 1G is a major concern. However, some countries have enough raw materials to manufacture 1G.
    • 2G bioethanol: It can be produced using inedible farm waste left over after harvest. Corn cobs, rice husks, wheat straw and sugarcane bagasse can all be transformed into cellulose and fermented into ethanol that can then be mixed with conventional fuels.
    • 3G bioethanol: Algae grown in wastewater, sewage or saltwater can be used to produce bioethanol. Water used for human consumption is not required. The benefit of 3G is that it does not compete with food. Nevertheless, economic viability remains a critical issue.

    Ethanol blending in India

    • India currently blends approximately 8.5 per cent ethanol with petrol.
    • It is estimated that ethanol production in India will triple to approximately 10 billion litres per year by 2025.
    • The 2G plant will play a major role in making bioethanol available for blending.
    • In addition to reducing agricultural waste incineration, it can also help meet the goal of converting waste into energy.

    Moves for production

    • The first 2G ethanol biorefinery is being set up at Bathinda, Punjab.
    • Hindustan Petroleum Corporation Ltd (HPCL) plans to set up four 2G ethanol plants that will convert agricultural waste into biofuel, reducing toxic air pollution in northern India.
    • Additionally, HPCL has plans to build four plants to produce ethanol using grains, such as surplus maize, surplus rice and damaged grain.

    Innovations in this field

    • An Indian company has filed a patent for loop reactor technology.
    • It is a long, serpentine tubular reactor, in which fermentable sugars are converted to ethanol with the help of brewer’s yeast.
    • This sparked an idea to come up with reactive pipeline technology, wherein the pipeline connects the sugar factories where the ethanol is produced to the blending depot at the closest oil manufacturing companies.
    • Reactive pipeline technology is poised to be a game-changer for sugar factories and grain-based distilleries since uninterrupted raw material supply is a major challenge.

    Benefits offered by ethanol blending

    (1) Energy security

    • The Union government has emphasized that increased use of ethanol can help reduce the oil import bill.
    • India’s net import cost stands at $551 billion in 2020-21. It is estimated that the E20 program can save the country $4 billion (Rs 30,000 crore) per annum.

    (2) Emission reduction

    • Use of ethanol-blended petrol decreases emissions such as carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx), the expert committee noted.
    • Higher reductions in CO emissions were observed with E20 fuel — 50 per cent lower in two-wheelers and 30 per cent lower in four-wheelers.

    Some issues to be addressed

    (1) Fuel efficiency

    • There is an estimated loss of six-seven per cent fuel efficiency for four-wheelers and three-four per cent for two-wheelers when using E20, the committee report noted.
    • These vehicles are originally designed for E0 and calibrated for E10.

    (2) Recalibrating engines

    • The use of E20 will require new engine specifications and changes to the fuel lines, as well as some plastic and rubber parts due to the fuel’s corrosive nature.
    • The engines, moreover, will need to be recalibrated to achieve the required power, efficiency and emission-level balance due to the lower energy density of the fuel.

    Conclusion

    • The country’s target of 20 per cent ethanol blending in petrol (E20) by 2025 can play a key role in reducing crude oil imports and bolstering India’s energy independence.
    • But India may miss an earlier goal set by him in 2015 — of reducing crude oil import dependency 10 per cent by 2022.
    • The target is far from being met and the country’s import dependency is only increasing.
    • The country’s target of 20 per cent ethanol blending in petrol (E20) by 2025 can play a key role in reducing crude oil imports and bolstering India’s energy independence.

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    Back2Basics: EBP Programme

    • Ethanol Blended Petrol (EBP) programme was launched in January 2003 for the supply of 5% ethanol blended petrol.
    • The programme sought to promote the use of alternative and environment-friendly fuels and to reduce import dependency for energy requirements.
    • OMCs are advised to continue according to priority of ethanol from 1) sugarcane juice/sugar/sugar syrup, 2) B-heavy molasses 3) C-heavy molasses and 4) damaged food grains/other sources.

  • The message from the IPCC report

    Context

    The Intergovernmental Panel on Climate Change (IPCC) recently released the Working Group I contribution to the Sixth Assessment Report (AR6). It is the first of four that the Panel will issue over the next one and a half years.

    What does the report say?

    • Global surface temperature is now higher by 1.07oC since the pre-industrial era.
    • The impact of climate change on the atmosphere, oceans and land is unmistakably of human origin and this impact is picking up pace.
    • Carbon dioxide is the dominant source of warming.
    • Aerosols contribute to reducing the impact of warming by other greenhouse gases, by almost a third.
    • Methane reduction, while needed overall, is particularly significant only as part of the endgame as the drastic reduction of aerosols actually leads to an increase in warming.
    • The report expectedly projects an increase in climate extremes due to global warming, with heatwaves, extreme rainfall events and occurrence of extreme sea levels all expected to intensify and be more frequent.
    • A major finding of the report is that air pollution reduction and steep climate change mitigation are not complementary goals but require independent efforts over the short and medium-term
    • With the inclusion of the Indian Institute of Tropical Meteorology’s Earth System Model among the climate models used in AR6, India too has joined the climate modelling fraternity.

    About the net-zero emission targets

    •  The report’s clear message is that reaching net zero was not the determining factor for the world to limit itself to a 1.5oC , or 2oC, or indeed any specific temperature increase.
    • The report is clear that it is the cumulative emissions in reaching net zero that determine the temperature rise.
    • India’s Ministry for Environment, Forest and Climate Change was quick to note this point about net zero in a statement, adding that “historical cumulative emissions are the cause of the climate crisis that the world faces today”
    • The limitations of the remaining carbon budget for 1.5oC are so stringent — a mere 500 billion tonnes of carbon dioxide for an even chance of keeping to the limit — that they cannot be met by promises of net-zero 30 years from now.
    • Equally, the disconcerting finding is that the world is set to cross the 1.5oC limit within 10-15 years.

    Implications for India

    •  India has contributed less than 5% of global cumulative emissions to date, with per capita annual emissions a third of the global average.
    • India is also the only nation among the G20 with commitments under the Paris Agreement that are even 2oC warming-compatible.
    • India needs its development space urgently to cope with the future, one where global temperature increase may be closer to 2oC.
    • Even if India completely stops its emission which is 3 billion tonnes in carbon dioxide equivalent terms, for the next 30 years, with others’ emissions remaining the same, will buy the world less than two years of additional time for meeting the Paris Agreement temperature goals.

    Way forward

    • Equity: Focusing on definite cumulative emission targets keeping equity and historical responsibility in view,
    • Immediate reduction by developed countries: Immediate emission reductions by the developed countries with phase-out dates for all fossil fuels.
    • Investment: Massive investment in new technologies and their deployment,
    • Climate finance: a serious push to the mobilisation of adequate climate finance is the need of the hour.

    Conclusion

    This is the message that the IPCC report has sent to this year’s climate summit and the world. The message is a dire warning, all the stakeholders should heed the warning.

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  • Species in news: Slender Loris

    The Kadavur hills in central Tamil Nadu’s Karur district are home to the Kadavur Reserve Forest. These forests are home to the shy and reclusive slender loris, a species of primate.

    Slender Loris

    • Slender loris (Loris tardigradus) is secretive and has nocturnal habits. It usually travels from the canopy of one tree to another. But, at times, it also comes down to bushes at the ground level to feed.
    • It is also found in the adjoining forest areas on the eastern, southern and western slopes of the Kadavur hills.
    • It sleeps by day in the foliage or in a hole or crevice. It comes out at dusk in search of prey.
    • They are fond of lantana berries and also eat insects, lizards, small birds, tree frogs, tender leaves and buds.
    • They are usually solitary but sometimes found in pairs.

    Conservation

    • The slender loris has been listed as ‘Endangered’ by the International Union for the Conservation of Nature.
    • It has been brought under Schedule I of the Wild Life (Protection) Act, 1972 in order to provide the highest level of legal protection.

    Threats

    • As it is believed that these animals have some medicinal properties, they are captured and sold.
    • Since there is great demand for keeping these animals as pets, they are illegally smuggled.
    • Habitat loss, electrocution of live wires, and road accidents are other threats that have caused its populations to dwindle.

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  • Species in news: Greater Adjutant Storks

    In a first, Bihar has decided to tag endangered greater adjutant storks (Leptoptilos dubius), locally known as ‘Garuda’, with GPS trackers to monitor their movement as a part of their conservation.

    Greater Adjutant Storks

    • Bhagalpur’s Kadwa Diara floodplains area is the third-most-popular breeding centre for the greater adjutant stork in the world after Assam and Cambodia.
    • Historically the range of the Greater Adjutant covered India and Southeast Asia, but today the endangered storks are mostly found in the Indian state of Assam and in Cambodia.
    • In India, the Greater Adjutant is now confined to the northeastern state of Assam, their last stronghold.

    Try answering this PYQ:

    Q.If you walk through the countryside, you are likely to see some birds stalking alongside the cattle to seize the insects, disturbed by their movement through grasses. Which of the following is/are such bird/ birds?

    1. Painted Stork
    2. Common Myna
    3. Black-necked Crane

    Select the correct answer using the code given below:

    (a) 1 and 2 only

    (b) 2 only

    (c) 2 and 3 only

    (d) 3 only

     

    [wpdiscuz-feedback id=”8rjevzut5″ question=”Please leave a feedback on this” opened=”1″]Post your answers here:[/wpdiscuz-feedback]

    Their conservation

    • The greater adjutant is one of the most threatened stork species of the world and is widely considered to be a rare bird.
    • However, the global population of the Greater Adjutant Stork is estimated to be roughly not more than 1,500 now.
    • Hence it is classified as ‘endangered ‘on the IUCN’s Red List 2004 of threatened species and listed under Schedule IV of the Indian Wild Life (Protection) Act, 1972.
    • The Bombay Natural History Society will help and work along with the state forest, environment, and climate change department to start the process of tagging greater adjutant storks with GPS tracker.

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  • Plastic Waste Management Amendment Rules, 2021

    The Environment Ministry has notified the Plastic Waste Management Amendment Rules, 2021, which prohibits identified single-use plastic items which have low utility and high littering potential by 2022.

    What is the new Amendment?

    • Pollution due to single use plastic items has become an important environmental challenge confronting all countries.
    • The manufacture, import, stocking, distribution, sale and use of following single-use plastic, including polystyrene and expanded polystyrene, commodities shall be prohibited with effect from the 1st July, 2022:
    1. ear buds with plastic sticks, plastic sticks for balloons, plastic flags, candy sticks, ice-cream sticks, polystyrene [thermocol] for decoration
    2. plates, cups, glasses, cutlery such as forks, spoons, knives, straw, trays, wrapping or packing films around sweet boxes, invitation cards and cigarette packets, plastic or PVC banners less than 100 micron, stirrers
    • The thickness of plastic carry bags has been increased from fifty microns to seventy-five microns and to one hundred and twenty microns with effect from the 31st December, 2022.

    Extended Producer Responsibility

    • The plastic packaging waste shall be collected and managed in an environmentally sustainable way through the Extended Producer Responsibility of the Producer, importer and Brand owner (PIBO), as per Plastic Waste Management Rules, 2016.
    • For effective implementation the Guidelines for EPR being brought out have been given legal force through Plastic Waste Management Amendment Rules, 2021.

    Plastic waste in India

    • As much as 3.3 million metric tonnes of plastic waste was generated in India in 2018-19, according to the Central Pollution Control Board (CPCB) report 2018-19.
    • This roughly translated to 9,200 tonnes a day (TPD).
    • The total municipal solid waste generation is 55-65 million tonnes; plastic waste is approximately 5-6 per cent of the total solid waste generated in the country.
    • Goa has the highest per capita plastic waste generation at 60 grams per capita per day, which is nearly double of what Delhi generates (37 grams per capita per day).

    The problem

    • Only nine percent of the plastic waste produced between 1950 and 2015 was recycled globally, according to a study by researchers from the University of California, Santa Barbara, and others.
    • Out of the nine per cent, only 10 per cent was recycled more than once; 12 per cent was incinerated, and 79 per cent ended up in landfills or oceans and other water bodies.
    • There are reports suggesting a huge gap between the demand and supply of plastics; we are being sold plastics at a much higher rate than we need.
    • Recycling is a rather benign word used by plastic manufacturers.
    • Most plastics that we claim can be recycled in India are rather down-cycled to some other material.
    • A classic example is that of PET bottles being recycled to t-shirts.

    Way forward

    • Managing plastic waste requires effective knowledge, not only among those who produce the plastic but also among those who handle it.
    • Brand owners, consumers, recyclers and regulatory authorities need to take long strides in ensuring that we first invent the total amount of plastic waste that we generate by means of proper calculations.
    • The second step would be to identify the avenues where the use of plastic can be minimized.
    • Third, the brand owner and manufacturer should try and understand the fates a plastic packaging material would meet after its purpose of packaging has been served.
    • Last, as consumers, we should ensure that all plastic waste leaving our homes is segregated and is not contaminated with food waste.

     

  • Four new Wetlands added to Ramsar list

    Four more wetlands from India get recognition from the Ramsar Secretariat as Ramsar sites.

    What are Wetlands?

    • A wetland is a distinct ecosystem that is flooded by water, either permanently or seasonally, where oxygen-free processes prevail.
    • The primary factor that distinguishes wetlands from other landforms or water bodies is the characteristic vegetation of aquatic plants, adapted to the unique hydric soil.

    Significance of Wetlands

    • Wetlands provide a wide range of important resources and ecosystem services such as food, water, fibre, groundwater recharge, water purification, flood moderation, erosion control, and climate regulation.
    • They are, in fact, are a major source of water and our main supply of freshwater comes from an array of wetlands that help soak rainfall and recharge groundwater.
    • They provide many societal benefits: food and habitat for fish and wildlife, including threatened and endangered species; water quality improvement; flood storage; shoreline erosion control; economically beneficial natural products for human use; and opportunities for recreation, education, and research, etc.

    Which are the new sites added to the Ramsar List?

    • Thol and Wadhwana from Gujarat and
    • Sultanpur and Bhindawas from Haryana

    With this, the number of Ramsar sites in India are 46 and the surface area covered by these sites is now 1,083,322 hectares.

    (1) Bhindawas Wildlife Sanctuary

    • Bhindawas WLS, the largest wetland in Haryana is a human-made freshwater wetland.
    • Over 250 bird species use the sanctuary throughout the year as a resting and roosting site.
    • The site supports more than ten globally threatened species including the endangered Egyptian Vulture, Steppe Eagle, Pallas’s Fish Eagle, and Black-bellied Tern.

    (2) Sultanpur National Park

    • Sultanpur NP from Haryana supports more than 220 species of resident, winter migratory and local migratory waterbirds at critical stages of their life cycles.
    • More than ten of these are globally threatened, including the critically endangered sociable lapwing, and the endangered Egyptian Vulture, Saker Falcon, Pallas’s Fish Eagle and Black-bellied Tern.

    (3) Thol Lake Wildlife Sanctuary

    • Thol Lake WLS from Gujarat lies on the Central Asian Flyway and more than 320 bird species can be found here.
    • The wetland supports more than 30 threatened waterbird species, such as the critically endangered White-rumped Vulture and Sociable Lapwing, and the vulnerable Sarus Crane, Common Pochard, and Lesser White-fronted Goose.

    (4) Wadhvana Wetland

    • Wadhvana Wetland from Gujarat is internationally important for its birdlife as it provides wintering ground to migratory waterbirds, including over 80 species that migrate on the Central Asian Flyway.
    • They include some threatened or near-threatened species such as the endangered Pallas’s fish-Eagle, the vulnerable Common Pochard, and the near-threatened Dalmatian Pelican, Grey-headed Fish-eagle and Ferruginous Duck.

    Back2Basics: Ramsar Convention

    • The Convention on Wetlands of International Importance (better known as the Ramsar Convention) is an international agreement promoting the conservation and wise use of wetlands.
    • It is the only global treaty to focus on a single ecosystem.
    • The convention was adopted in the Iranian city of Ramsar in 1971 and came into force in 1975.
    • Traditionally viewed as a wasteland or breeding ground of disease, wetlands actually provide fresh water and food and serve as nature’s shock absorber.
    • Wetlands, critical for biodiversity, are disappearing rapidly, with recent estimates showing that 64% or more of the world’s wetlands have vanished since 1900.
    • Major changes in land use for agriculture and grazing, water diversion for dams and canals, and infrastructure development are considered to be some of the main causes of loss and degradation of wetlands.