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Subject: Environment

  • Understanding the interplay between subsidies and agri-pollution

    Agriculture’s contribution to air pollution

    • Agriculture’s contribution to air pollution runs deeper than what happens between crop seasons.
    • The Indo-Gangetic plain is also one of the world’s largest and rapidly-growing ammonia hotspots.
    • Atmospheric ammonia, which comes from fertiliser use, animal husbandry, and other agricultural practices, combines with emissions from power plants, transportation and other fossil-fuel burning to form fine particles.

    Impact of pollution on agriculture

    • It is important to note that agriculture is a victim of pollution as well as its perpetrator.
    • Particulate matter and ground-level ozone formed from industrial, power plant, and transportation emissions among other ingredients cause double-digit losses in crop yields.
    • Ozone damages plant cells, handicapping photosynthesis, while particulate matter dims the sunlight that reaches crops.
    • Agriculture scientist Tony Fischer’s 2019 estimates of the two pollutants’ combined effect suggest that as much as 30 per cent of India’s wheat yield is missing (Sage Journals, Outlook on Agriculture).
    • Earlier, B Sinha et al (2015), in Atmospheric Chemistry and Physics Discussions, found that high ozone levels in parts of Haryana and Punjab could diminish rice yields by a quarter and cotton by half.

    Role played by subsidies

    • The current system of subsidies is a big reason that there is stubble on these fields in the first place.
    • Free power — and consequently, “free” water, pumped from the ground — is a big part of what makes growing rice in these areas attractive.
    • Open-ended procurement of paddy, despite the bulging stocks of grains with the Food Corporation of India, adds to the incentives.
    • Subsidies account for almost 15 per cent of the value of rice being produced in Punjab-Haryana belt.
    • Fertiliser, particularly urea in granular form, is highly subsidised.
    • It is one of the cheapest forms of nitrogen-based fertiliser, easy to store and easy to transport, but it is also one of the first to “volatilise,” or release ammonia into the air.
    • This loss of nitrogen then leads to a cycle of more and more fertiliser being applied to get the intended benefits for crops.

    Way forward

    • We need to shift the nature of support to farmers from input subsidies to investment subsidies.
    • This could involve the conversion of paddy areas in this belt to orchards with drip irrigation, vegetables, corn, cotton, pulses and oilseeds.
    • All of the above consume much less water, much less power and fertilisers and don’t create stubble to burn.
    • A diversification package of, say, Rs 10,000 crore spread over the next five years, equally contributed by the Centre and states, may be the best way to move forward in reducing agriculture-related pollution.
    • The approach to diversification has to be demand-led, with a holistic framework of the value chain, from farm to fork and not just focused on production.
    • On the fertiliser front, it would be better to give farmers input subsidy in cash on per hectare basis, and free up the prices of fertilisers completely.

    Conclusion

    Taken together, these measures could double farmers’ incomes, promote efficiency in resource use, and reduce pollution — a win-win solution for all.

  • India’s Deep Ocean Mission

    India will soon launch an ambitious ‘Deep Ocean Mission’ that envisages exploration of minerals, energy and marine diversity of the underwater world, a vast part of which still remains unexplored.

    Deep Ocean Mission (DOM)

    Nodal Agency: Ministry of Earth Sciences (MoES)

    • The mission proposes to explore the deep ocean similar to the space exploration started by ISRO.
    • Underwater robotics and ‘manned’ submersibles are key components of the Mission which will help India harness various living and non-living (water, mineral and energy) resources from the seabed and deep water.
    • The tasks that will be undertaken over this period include deep-sea mining, survey, energy exploration and the offshore-based desalination.
    • These technological developments are funded under an umbrella scheme of the government – called Ocean Services, Technology, Observations, Resources Modelling and Science (O-SMART).

     Mining PMN

    • One of the main aims of the mission is to explore and extract polymetallic nodules (PMN).
    • These are small potato-like rounded accretions composed of minerals such as manganese, nickel, cobalt, copper and iron hydroxide.
    • They lie scattered on the Indian Ocean floor at depths of about 6,000 m and the size can vary from a few millimetres to centimetres.
    • These metals can be extracted and used in electronic devices, smartphones, batteries and even for solar panels.

    Where will the team mine?

    • The International Seabed Authority (ISA), an autonomous international organisation established under the 1982 United Nations Convention on the Law of the Sea, allots the ‘area’ for deep-sea mining.
    • India was the first country to receive the status of a ‘Pioneer Investor ‘ in 1987 and was given an area of about 1.5 lakh sq km in the Central Indian Ocean Basin (CIOB) for nodule exploration.
    • In 2002, India signed a contract with the ISA and after complete resource analysis of the seabed 50% was surrendered and the country retained an area of 75,000 sq km.

    Which are the other countries that are in the race to mine the deep sea?

    • Apart from the CIOB, polymetallic nodules have been identified from the central Pacific Ocean. It is known as the Clarion-Clipperton Zone.
    • According to the ISA’s website, it has entered into 15-year contracts for exploration for polymetallic nodules, polymetallic sulphides and cobalt-rich ferromanganese crusts in the deep seabed with 29 contractors.
    • Later it was extended for five more years till 2022.
    • China, France, Germany, Japan, South Korea, Russia and also some small islands such as the Cook Islands, Kiribati have joined the race for deep-sea mining.
    • Most of the countries have tested their technologies in shallow waters and are yet to start deep-sea extraction.

    India’s preparedness

    • India’s mining site is at about a depth of 5,500 metres, where there is a high pressure and extremely low temperature.
    • We have also deployed Remotely Operated Vehicle and In-situ Soil Tester in the depth of 6,000 metres and have a thorough understanding of the mining area at the Central Indian Ocean Basin.
    • The mining machine newly developed for 6000 metres depth was able to move about 900 metres and will be deployed soon at 5,500 metres.
    • Weather conditions and the availability of ships also play a role.
    • More tests are being conducted to understand how to bring the nodules up to the surface. A riser system comprising an umbilical cable or electromechanical cable and a hose is being developed.

    What will be the environmental impact?

    • According to the IUCN, these deep remote locations can be home to unique species that have adapted themselves to conditions such as poor oxygen and sunlight, high pressure and extremely low temperatures.
    • Such mining expeditions can make them go extinct even before they are known to science.
    • The deep sea’s biodiversity and ecology remain poorly understood, making it difficult to assess the environmental impact and frame adequate guidelines.
    • Though strict guidelines have been framed, they are only exploration guidelines. A new set of exploitation guidelines are being worked out and discussions are on with the ISA.
    • Environmentalists are also worried about the sediment plumes that will be generated as the suspended particles can rise to the surface harming the filter feeders in the upper ocean layers.
    • Additional concerns have been raised about the noise and light pollution from the mining vehicles and oil spills from the operating vessels.

    Is deep-sea mining economically viable?

    • The latest estimate from the ISA says it will be commercially viable only if about three million tonnes are mined per year.
    • More studies are being carried out to understand how the technology can be scaled up and used efficiently.

  • Species in news: Meghalaya’s Glowing Mushrooms

    A mushroom documentation project in the forests of Northeast India has discovered a bioluminescent — or light-emitting — variety of mushroom.

    Try this PYQ:

    Q.Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of:

    (a) Algae and bacteria

    (b) Algae and fungi

    (c) Bacteria and fungi

    (d) Fungi and mosses

    Roridomyces phyllostachydis

    • The new species was first sighted near a stream in Meghalaya’s Mawlynnong in East Khasi Hills district and later at Krang Shuri in West Jaintia Hills district.
    • It is now one among the 97 known species of bioluminescent fungi in the world.

    Bioluminescence in fungi

    • Bioluminescence is the property of a living organism to produce and emit light.
    • Bioluminescent organisms are usually found in ocean environments, but they are also found in terrestrial environments.
    • The colour of the light emitted by the organism depends on its chemical properties.
    • In the case of fungi, the luminescence comes from the enzyme, luciferase.
    • The green light emits when luciferans is catalysed by the enzyme luciferase, in the presence of oxygen.

  • [pib] India’s first Green Energy Convergence Project

    The Energy Efficiency Services Limited (EESL) is set to roll out of India’s first Energy Convergence Project in Goa.

    Green Energy Convergence Project

    • Under the project, EESL and the Department of New and Renewable Energy (DNRE) in Goa will carry out feasibility studies and implementation of decentralized solar energy projects.
    • The project aims to connect seemingly independent sectors like Solar Energy, Energy Storage and LED lights to provide solutions, which can enable in decarbonisation and affordable energy access.
    • It will include the installation of 100 Megawatt decentralized ground-mounted solar power projects on government land to be used for agricultural pumping.
    • It seeks to replace 6,300 agricultural pumps and distribute 16 lakh LED bulbs for rural domestic households.

    Benefits of the project

    • The projects will accelerate the usage of renewable energy sources, especially for agricultural and rural power consumption in the State.
    • They will also contribute to the reduction of peak energy demand through the deployment of energy-efficient pumping and lighting thus contributing to overall sustainability.

    About EESL

    • A joint venture of NTPC Limited, Power Finance Corporation, Rural Electrification Corporation and POWERGRID, the EESL was set up under Ministry of Power to facilitate the implementation of energy efficiency projects.
    • EESL is a Super Energy Service Company (ESCO) that seeks to unlock energy efficiency market in India, that can potentially result in energy savings of up to 20 per cent of current consumption.
    • It also acts as the resource centre for capacity building of State DISCOMs, ERCs, SDAs, upcoming ESCOs, financial institutions, etc.

  • India’s challenge in balancing the emissions and economy

    India faces an uphill task of balancing its climate action with the economic growth. Bridging the energy deficit through renewable energy in cost-effective and increasing urban forestry could help in balancing the both.

    Comparing India’s commitment

    • China’s announcement recently to achieve carbon neutrality, that is, effectively generating net-zero emissions, before 2060 has now shifted focus on India’s commitments.
    • In this context,  let us compare India’s commitments with other countries, based on an independent scientific analysis carried out by the Climate Action Tracker. Major findings of it are:-
    • 1) India is one of the only six countries (amongst the 33 that were assessed), and the only G-20 country, whose climate commitments at Paris are on a path compatible to limit warming well below 2°C.
    • 2) It seems that India is well on its way to achieving its carbon intensity reduction and non-fossil-fuel electricity growth capacity commitments well before the 2030 target year.
    • Even though China’s commitment is likely to lower warming projections by around 0.2 to 0.3 degrees C by 2100, China continues to remain in the “highly insufficient” category.
    • India, despite being the fourth-largest emitter, has consistently kept its commitments in sync with its fair share and will achieve, if not over-achieve, these targets.

    Difference in development and growth levels

    • Development and growth in India are still at an early stage, and our first goal remains increasing the availability of adequate infrastructure for all Indians.
    • A measure of this deficit is that we use only about 0.6 tonnes of oil-equivalent worth of energy per person per year while in China it is 2.36 tonnes per person per year, and is at least 4 tonnes per person per year in the OECD countries.
    • It is, therefore, essential that we rapidly bridge the energy deficit.

    Bridging the energy deficit through renewable and cost-effective manner

    • Cost-effectiveness in renewable electricity has occurred rather rapidly, largely as a result of the global reduction in solar PV and battery prices.
    • Solar electricity is already the cheapest electricity available in India when the sun is shining.
    • It now seems that round-the-clock renewable electricity may be cost-competitive with coal electricity in the near future.
    • This cost-effectiveness of zero-carbon options will emerge in other applications as well.
    • It will involve dedicated action in some of the vital sectors which can generate and sustain employment while adding to the country’s economic growth.
    • It will enable a shift away from emissions-intensive fossil fuels, reducing our dependence on fuel imports.

    Urban forestry to compensate for environmental degradation

    • Increasing urban forestry could help compensate for environmental degradation as a result of rapid urbanisation in several Indian cities.
    • This is vital to restore the flow of crucial ecosystem services, including air quality, and increase the resilience of cities to extreme climatic events.
    • As a result, enhancing biodiversity, minimising human-wildlife conflict and restoring India’s pristine forests by developing dedicated wildlife/biodiversity corridors is an essential next step.

    Way ahead

    • At the developmental crossroads that India stands, the next decade is vital for its own economic growth, its climate action, and its social and ecological well-being.
    • With this in mind, India must focus on its domestic developmental prerogative and disengage them from the pressures that come along with international negotiations, focussing on actions that reduce the development deficits, which also provide strong climate benefits.
    • India must initiate a narrative, discussion and dialogue which focuses on each country taking on commitments that move their carbon trajectory towards the Paris agreement goal of limiting global warming to well below 2°C.

    Consider the question “Development and growth in India still at an early stage which makes the challenge of balancing the commitment to climate action with economic developement more difficult. In light of this, suggest the strategy that India should follow.”

    Conclusion

    India, being at the crossroads of development needs to balance the development goals with its commitment towards climate action.

  • Vulture Action Plan for 2020-25

    Union Minister for Environment, Forests and Climate Change has launched a Vulture Action Plan 2020-25 for the conservation of vultures in the country.

    Vulture Action Plan

    • While the ministry has been carrying out a conservation project for vultures since 2006, the plan is to now extend the project to 2025 to not just halt the decline but to actively increase the vulture numbers in India.
    • There are nine recorded species of vultures in India — the Oriental white-backed, long-billed, slender-billed, Himalayan, red-headed, Egyptian, bearded, cinereous and the Eurasian Griffon.
    • Vulture numbers saw a steep slide — as much as 90 per cent in some species — in India since the 1990s in one of the most drastic declines in bird populations in the world.

    Decline in Populations

    • Between the 1990s and 2007, numbers of three presently critically-endangered species – the Oriental white-backed, long-billed and slender-billed vultures — crashed massively with 99 per cent of the species having been wiped out.
    • The number of red-headed vultures, also critically-endangered now, declined by 91% while the Egyptian vultures by 80%.
    • The Egyptian vulture is listed as ‘endangered’ while the Himalayan, bearded and cinereous vultures are ‘near threatened’.

    Why protect vultures?

    • Vultures are often overlooked and perceived as lowly scavengers, but they play a crucial role in the environments in which they live.
    • The scavenging lifestyle that gives them a bad reputation is, in fact, that makes them so important for the environment, nature and society.
    • Vultures, also known as nature’s cleanup crew, do the dirty work of cleaning up after death, helping to keep ecosystems healthy as they act as natural carcass recyclers.

    Various threats

    • The crash in vulture populations came into limelight in the mid-90s, and in 2004.
    • The cause of the crash was established as diclofenac — a veterinary nonsteroidal anti-inflammatory drug (NSAID) used to treat pain and inflammatory diseases such as gout — in carcasses that vultures would feed off.
    • Just 0.4-0.7 per cent of animal carcasses contaminated with diclofenac was sufficient to decimate 99 per cent of vulture populations.

    Various initiatives

    • The MoEFCC released the Action Plan for Vulture Conservation 2006 with the drugs controller banning the veterinary use of diclofenac in the same year and the decline of the vulture population being arrested by 2011.
    • The Central Zoo Authority (CZA) and Bombay Natural History Society (BNHS) also established the Vulture Conservation Breeding Programme.
    • It has been successful and had three critically-endangered species bred in captivity for the first time.
    • The ministry has now also launched conservation plans for the red-headed and Egyptian vultures, with breeding programmes for both.
    • The Vulture Safe Zone programme is being implemented at eight different places in the country where there were extant populations of vultures, including two in Uttar Pradesh.

  • Lonar Lake, Sur Sarovar declared as Ramsar sites

    The Lonar Lake in Maharashtra and Sur Sarovar, also known as Keetham lake, in Agra, have been added to the list of recognised Ramsar sites.

    Make a note of all freshwater and saltwater lakes in India.

    Lonar Lake

    • Lonar Lake, also known as Lonar crater, is a notified National Geo-heritage Monument, saline (pH of 10.5), Soda Lake, located at Lonar in Buldhana district, Maharashtra.
    • It was created by an asteroid collision with earth impact during the Pleistocene Epoch.
    • It is one of the four known, hyper-velocity, impact craters in basaltic rock anywhere on Earth.
    • It sits inside the Deccan Plateau—a massive plain of volcanic basalt rock created by eruptions some 65 million years ago.

    Sur Sarovar

    • It is a scenic lake just outside Agra on the Agra – Delhi highway (NH 2) and a declared bird sanctuary.
    • The riverine belt of River Yamuna surrounds the area of Sur-Sarovar.
    • It is today home to more than 165 species of migratory and resident birds.
    • It is the same place that inspired the famed poet Soordas to compose the “Bhakti Kavya” one of the finest pieces of devotional poetry.

    Two amongst many

    • India now has 41 wetlands, the highest in South Asia, with two more added to the list of recognised sites of international importance under the treaty of Ramsar Convention.
    • Recently, Kabartal in Bihar’s Begusarai district was recognised as a wetland of international importance, the first such wetland in the State, under the Ramsar Convention.
    • The Asan Conservation Reserve in Dehradun, the first wetland from Uttarakhand to be recognised by Ramsar convention, was added to the list in October this year.

    Back2Basics: 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.
    • 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.

    What is the Ramsar Convention?

    • The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat is a treaty for the conservation and sustainable use of such sites.
    • The convention, signed in 1971 in the Iranian city of Ramsar, is one of the oldest inter-governmental accords for preserving the ecological character of wetlands.
    • Also known as the Convention on Wetlands, it aims to develop a global network of wetlands for the conservation of biological diversity and for sustaining human life.
    • Over 170 countries are party to the Ramsar Convention and over 2,000 designated sites covering over 20 crore hectares have been recognised under it.

  • Air pollution in India

    Despite efforts from several levels, air pollution is getting worse day by day. The article suggests the strategy to deal with the issue of air pollution.

    Solvable problem

    • Pollution is very much a solvable problem but it cannot be solved on an emergency basis.
    • It has to be dealt with firmly and gradually.
    • Why gradually? Because there are many sources of pollution and it would be prohibitively costly to stop them or even significantly reduce them all at once.

    Replacing existing technologies with existing technology

    • The biggest sources air polltion nationally are cooking fires, coal-fired power plants, various industries, crop residue burning, and construction and road dust. Vehicles are further down on the list.
    • Dealing with all these sources will require a gradual replacement of existing technologies with new technologies.
    • Cooking fires must be replaced with LPG, induction stoves, and other electric cooking appliances.
    • Old coal power plants must be closed and replaced with wind and solar power and batteries while newer plants must install new pollution control equipment.
    • No new coal-fired power plants should be built — with renewables being cheaper, coal is obsolete for power generation.
    • Other industries that use coal will have to gradually switch over to cleaner fuel sources such as gas or hydrogen while becoming more energy-efficient at the same time.
    • Farmers will have to switch crops or adopt alternative methods of residue management.
    • Diesel and petrol vehicles must gradually be replaced by electric or hydrogen fuel cell vehicles running on power generated from renewables.

    Legal measures and issues

    • Governments can make clean investments more profitable and dirty investments less profitable by taxing polluting activities and subsidising clean investments.
    • The judiciary is more powerful but has far less scientific and technical competence.
    • It tends to act only during crises and focus on past mistakes rather than planning to prevent new ones.

    Reforms in regulatory agency

    • Our existing laws do not allow the central and state pollution boards to levy pollution fee or cess based on pollution emissions.
    • Since closing down an industry is a drastic step, it almost never happens.
    • We need a regulatory agency that can levy pollution fee or cess, is that the regulatory decision need not be an all-or-nothing decision.
    • Pollution fees can start small, and the EPA can announce that they will rise by a certain percentage every year.
    • The regulatory agency should be given some independence,like
    • 1) a head appointed for a five-year term removable only by impeachment.
    • 2) a guaranteed budget funded by a small percentage tax on all industries.
    • 3) autonomy to hire staff and to set pollution fees after justification through scientific studies.
    • Three advantages of the regulator with such powers would be-
    • 1) Politicians in power can pass on the blame for decisions on pollution fees to the EPA.
    • 2) Pollution fees raise revenue for the government.
    • 3) If the law establishing an independent EPA is written to require that changes to pollution fees and regulations must be published in advance, and cannot involve abrupt changes, then surprises are avoided.
    • Industry opposition will be muted, especially if industry gets a piece of the revenue to invest in new technologies.

    Conclusion

    Our pollution problem has taken decades to grow into the monster that it is. It can’t be killed in a day. We need the scientific and technical capacity that only a securely funded independent EPA can bring to shrink pollution down to nothing.

  • Places in news: Tristan da Cunha

    The isolated UK Overseas Territory of Tristan da Cunha, the world’s most remote human settlement, has been declared the largest fully protected marine reserves in the Atlantic Ocean at 687,000 square kilometres.

    Note the location of Tristan da Cunha Islands in the Atlantic.

    Tristan da Cunha

    • Tristan da Cunha, which is inhabited by less than 300 humans is a small chain of islands over 6,000 miles from London in the South Atlantic and the water around the islands are considered to be the richest in the world.
    • The mountainous archipelago is home to tens of millions of seabirds and several unique land birds that are comparable to the Galapagos island finches.
    • The island group is also home to the World Heritage Site of Gough and Inaccessible Islands, which is one of the most important seabird islands in the world.

    Significance of protection

    • After joining the UK’s Blue Belt Programme, it will become the largest no-take zone in the Atlantic and the fourth largest on the planet.
    • This will close over 90 per cent of their waters to harmful activities such as bottom-trawling fishing, sand extraction and deep-sea mining.
    • The almost 700,000 square kilometres of the Marine Protection Zone (MPZ) is almost three times the size of the UK and will safeguard the future of sevengill sharks, Yellow-nosed albatrosses and rockhopper penguins.
    • MPZs involve the management of certain natural areas for biodiversity conservation or species protection and are created by delineating zones with permitted and non-permitted areas within that zone.

  • Species in news: Rohanixalus -the frogs of the new genus

    Indian researchers have discovered a genus of tree frog found in the Andaman Islands and the northeast.

    A stand-alone species being mentioned in the news for the first time find their way into the prelims. Make special note here. Usually, note the species and its habitat location (IUCN status if available), in the purview of a generic prelims question.

    Genus Rohanixalus

    • Named after Sri Lankan taxonomist Rohan Pethiyagoda, the frogs of the new genus Rohanixalus are characterised by a rather small and slender body (size about 2 to 3 cm long).
    • It has a pair of contrastingly coloured lateral lines on either side of the body, minute brown speckles scattered throughout the upper body surfaces, and light green coloured eggs laid in arboreal bubble-nests.
    • Based on DNA studies, the new genus is also revealed to be a distinct evolutionary lineage from all previously known tree frog genera.
    • It is the 20th recognised genus of the family Rhacophoridae that comprises 422 known Old World tree frog species found in Asia and Africa.

    Sub-species of this frog

    • There are eight frog species in this genus Rohanixalus.
    • They are known to inhabit forested as well as human-dominated landscapes right from the northeast to Myanmar, Thailand, Malaysia, Indonesia, Vietnam, Laos, and Cambodia, up to southern China.

    Unique features of this genus

    • The genus has several unique behavioural traits including maternal egg attendance where the female (mother) attends the egg clutches until hatching and assists in the release of the tadpoles into the water.
    • During the first three days after egg-laying, the female sits over the eggs and produces a gelatinous secretion with which she glazes the egg mass through the clock-wise movement of her legs.
    • This behaviour provides necessary moisture to the eggs laid on exposed leaf surfaces and protects them from insect predation.