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GS Paper: GS3-18.Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment.

  • Microplastic and marine debris levels

    Microplastic Pollution:

    Microplastics are now a serious environmental and health threat. A recent (Ministry of Earth Sciences) MoES–NCCR survey found alarming levels along India’s east and west coasts, highlighting the urgent need to embed microplastic control within India’s environmental governance framework.

    Key Findings from NCCR Survey (2022–2025):

    1. Major microplastic sources identified:
      1. Riverine inputs (plastic waste transported by rivers)
      2. Abandoned, Lost, and Discarded Fishing Gear (ALDFG), a persistent marine debris source globally
    2. The presence of primary (e.g., microbeads in cosmetics) and secondary microplastics (from the breakdown of plastic waste) was confirmed.

    Microplastics: Nature

    • Definition: Plastic particles ranging between 1 micrometre (µm) and 5 millimetres (mm).
    • Types:
      • Primary Microplastics: Manufactured in small sizes (e.g., microbeads in personal care products).
      • Secondary Microplastics: Result from degradation of larger plastic items due to sunlight, wave action and other environmental factors.

    Environmental Impact of Microplastics:

    Impact on Marine Environments:

    1. Ingestion by Marine Life: Marine organisms, including fish, seabirds, ingest microplastics and can cause physical harm including gut blockages and tissue damage.
    2. Bioaccumulation in Marine Food Webs: Bioaccumulation can lead to higher concentrations of toxins such as Polychlorinated Biphenyls (PCBs) and Polycyclic Aromatic Hydrocarbons (PAHs) in top predators, potentially impacting their health and reproductive success.
    3. Habitat Disruption: Microplastics can accumulate in marine sediments and affect the structure and function of marine ecosystems.
    4. Chemical Leaching: Microplastics can leach harmful chemicals into the surrounding seawater. These chemicals include Bisphenol A (BPA), which is known to cause reproductive defects in some fish species, along with phthalates and brominated flame retardants, all of which can interfere with the endocrine system.

    Impact on Ecological Systems:

    1. Soil Contamination: Microplastics can negatively impact soil structure, microbial activity, and nutrient cycling, affecting plant growth and overall ecosystem health. They can act as carriers for toxins like heavy metals (e.g., Lead (Pb) and Cadmium (Cd)).
    2. Disruption of Food Webs: Microplastics can accumulate in the bodies of various organisms, potentially disrupting food chains and affecting higher trophic levels.
    3. Impact on Soil Biota: Exposure to microplastics can negatively impact soil-dwelling organisms like earthworms and microorganisms, affecting their growth and reproduction. Leaching of plastic additives such as phthalates can disrupt cell membrane function in microbes.
    4. Plant Toxicity: Microplastics can be absorbed by plants, potentially affecting their growth and development, and introducing toxins into the food chain.

    India’s Initiatives on Microplastic Management

    1. Plastic Waste Management Rules, 2016 (Amended 2021–22): Ban on single-use plastics and Emphasis on Extended Producer Responsibility (EPR) for collection and recycling.
    2. Swachh Bharat Mission 2.0: Includes solid waste segregation, treatment, and scientific disposal.
    3. Ecosensitive Coastal Zone Regulation (CRZ): CRZ rules govern development along coastlines and indirectly reduce marine plastic input.
    4. FSSAI Project: Ongoing study to develop standard detection protocols for microplastics in food products.

    International Conventions and Agreements

    • MARPOL (International Convention for the Prevention of Pollution from Ships) Annex V prohibits the discharge of plastics and synthetic fishing gear into the sea.
    • Basel Convention (1989, amended in 2019) regulates transboundary movement of plastic waste. India ratified the amendments concerning plastic waste in 2020.
    • The United Nations Environment Assembly (UNEA) adopted a historic resolution to negotiate a legally binding global treaty on plastic pollution by 2024 (still ongoing).
    • Sustainable Development Goal 14 talks about Preventing and significantly reducing marine pollution of all kinds, particularly from land-based activities.
    • Global Partnership on Marine Litter (GPML): A UN Environment initiative, India is a participating country.

    Way Forward

    1. National Microplastic Monitoring Programme: Expand surveys to include rivers, lakes, groundwater, and terrestrial ecosystems.
    2. Ban on Microbeads: A clear legislative ban on the use of microbeads in personal care products (done in countries like the UK and USA).
    3. Fishing Gear Recovery Programmes: Introduce buy-back schemes or incentives for collection of damaged fishing gear.
    4. Invest in R&D: Support startups and research institutes working on biodegradable alternatives and plastic detection methods.
    5. Public Awareness and Behavioural Change: Use platforms like Eco Clubs, MyGov, Swachh Bharat campaigns for mass education.

    The presence of microplastics disrupts ecosystems by affecting organisms’ behavior and physiology, impacting soil fertility, and altering aquatic food webs. Addressing microplastic pollution requires a multi-faceted approach, including reducing plastic consumption, improving waste management, and developing innovative solutions like biodegradable alternatives and advanced filtration systems.

    Practice UPSC Mains Questions:

    1. What are microplastics and how do they impact human health and the environment? Evaluate India’s current policy response to the problem and suggest a comprehensive mitigation strategy.
    2. Critically discuss the effectiveness of current national and global efforts to combat microplastic pollution, including initiatives like the Single-Use Plastic ban and the ongoing discussions around a legally binding international plastics treaty.

  • In News: Great Barrier Reef

    Why in the News?

    The Great Barrier Reef is facing its sharpest coral decline in 40 years, with the 2024 mass bleaching—driven by climate change, cyclones, and coral predators—severely damaging large reef areas.

    In News: Great Barrier Reef

    About Great Barrier Reef:

    • Location: Coral Sea, off the northeast coast of Queensland, Australia.
    • Length & Area: Extends ~2,300 km; comprises ~3,000 reefs and 900 islands, covering ~350,000 square kilometers (about 10% of global coral reef ecosystems).
    • Biodiversity:
      • Hosts 400 coral species, 1,500 fish species, and 4,000 mollusk species.
      • Habitat for endangered species like the dugong and green turtle.
    • Reef Types: Includes platform reefs, wall reefs, and fringing reefs.
    • Protection Status:
      • Managed by the Great Barrier Reef Marine Park Authority.
      • Declared a United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Site in 1981.
    • Mass Bleaching Years: Notable events occurred in 1998, 2002, 2016, 2017, 2020, 2022, 2024, and 2025.

    Coral Decline and Bleaching Events:

    • Main Cause: Heat stress due to climate change, particularly during marine heatwaves.
    • 2024 Event: Fifth major bleaching since 2016; had the widest spatial impact recorded in the Australian Institute of Marine Science’s 39-year monitoring program.
    • Additional Damage: Cyclones (e.g., Cyclone Jasper) and flood plumes caused physical damage and freshwater stress.
    • Biological Threats: Crown-of-thorns starfish (COTS) outbreaks intensified coral predation, especially in the Swains sector.
    • 2025 Survey Findings:
      • 48% of 124 surveyed reefs showed coral decline.
      • Only 10% recorded an increase in coral cover.
    • Regional Impact: Southern Great Barrier Reef saw a 30.6% drop in hard coral cover—the sharpest annual decline ever recorded in that zone.
    [UPSC 2014] The scientific view is that the increase in global temperature should not exceed 2 0 C above pre-industrial level. If the global temperature increases beyond 30 C above the pre-industrial level, what can be its possible impact/impacts on the world?

    1. Terrestrial biosphere tends toward a net carbon source. 2. Widespread coral mortality will occur. 3. All the global wetlands will permanently disappear.  4. Cultivation of cereals will not be possible anywhere in the world. Select the correct answer using the code given below:

    Options: (a) 1 only (b) 1 and 2 only* (c) 2, 3 and 4 only (d) 1, 2, 3 and 4 only

     

  • Status of Ethanol Blended Petrol (EBP) Programme

    Why in the News?

    India met its 20% ethanol blending (E20) target in petrol by March 2025 — five years early. Talks are now on to raise the blending ratio further in the immediate future.

    About Ethanol Blended Petrol (EBP) Programme:

    • Launched in 2003 by the Ministry of Petroleum and Natural Gas.
    • Objective: Promote use of renewable, domestically produced ethanol in petrol.
    • Nationwide rollout (except A&N and Lakshadweep) since April 2019.
    • Feedstock:
      • 1G Ethanol: From sugarcane molasses, maize, rice.
      • 2G Ethanol: From agricultural residues like rice straw, bamboo, bagasse.
    • Blending Progress:
      • 1.6% in 2013–14
      • 11.8% in 2022–23
      • 20% achieved in March 2025 (E20)
    • Future Plans:
      • Discussions on E27 blending target by 2030.
      • Government exploring flex-fuel vehicles (e.g., E85-capable (dual-fuel) cars).

    India’s Achievements:

    • Environmental Gains: 19.2 million tonnes of CO₂ emissions avoided (2014–2021).
    • Economic Impact: ₹26,000 crore saved in foreign exchange via reduced oil imports.
    • Industrial Growth:
      • Distillery capacity scaled up with interest subvention support.
      • Flex-fuel vehicles showcased by major automakers in 2025.
    • Farmer Benefit: Creates demand for sugarcane and grains, increasing farm income.

    Limitations:

    • Technical Challenges
      • Lower mileage with E20 due to reduced energy content.
      • Older vehicles may face engine compatibility issues.
      • Flex-fuel technology adoption still limited.
    • Economic Concerns
      • No drop in fuel prices despite ethanol savings.
      • Consumer hesitation due to lack of visible benefits.
    • Environmental Trade-offs
      • High land and water use for ethanol crops (especially sugarcane).
      • Food security risks from diverting food crops for fuel.
    • Need for Diversification
      • Majority of ethanol still from sugarcane; limited 2G ethanol usage.
      • Need to promote biomass-based ethanol (wood chips, crop residue).
    [UPSC 2025] Consider the following statements:

    Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former produces more ethanol than the latter.

    Statement II: Unlike in the United States of America where corn is the principal feedstock for ethanol production, sugarcane is the principal feedstock for ethanol production in Brazil.

    Which one of the following is correct in respect of the above statements?

    (a) Both Statement I and Statement II are correct and Statement II explains Statement I

    (b) Both Statement I and Statement II are correct but Statement II does not explain Statement I

    (c) Statement I is correct but Statement II is not correct

    (d) Statement I is not correct but Statement II is correct *

     

  • Population Census of Nilgiri Tahrs  

    Why in the News?

    A joint population census conducted by Kerala and Tamil Nadu has revealed the presence of 2,668 Nilgiri tahrs in the Western Ghats.

    Population Census of Nilgiri Tahrs  

    About Nilgiri Tahr (Nilgiritragus hylocrius):

    • Endemism: Found only in the Nilgiri Hills and southern Western Ghats of Tamil Nadu and Kerala, India.
    • Ecological Role: Key grazer in the montane grassland ecosystem, influencing plant growth and grassland regeneration.
    • Habitat:
      • Open montane grasslands interspersed with shola forests (South Western Ghats montane rain forests eco-region).
      • Occurs at elevations between 1,200 to 2,600 metres (3,900 to 8,500 feet).
      • Prefers steep rocky slopes, cliff edges, and grassy plateaus — areas with clear visibility to detect predators.
    • Population: Estimated 3,122 individuals in the wild; Locally extinct in about 14% of its historical habitat.
      • In Kerala (1,365): Eravikulam National Park (ENP) – largest single population (~841 individuals); Anamalai Hills landscape.
      • In Tamil Nadu (1303): Mukurthi National Park; Grass Hills National Park; Kalakkad-Mundanthurai Tiger Reserve (lesser presence)
    • Conservation Status:
      • IUCN Red List: Endangered
      • Wildlife (Protection) Act, 1972: Schedule I
    • Cultural Significance:
      • Official state animal of Tamil Nadu.
      • Mentioned in Tamil Sangam literature (~2,000 years ago).
      • Seen in Mesolithic rock art (10,000–4,000 BC), indicating its deep historical importance.
    [UPSC 2018] Consider the following fauna of India:

    1. Gharial 2. Leatherback turtle 3. Swamp deer

    Which of the above is/are endangered?

    Options: (a) 1 and 2 only (b) 3 only (c) 1, 2 and 3 * (d) None

     

  • Pollution Control can levy Environmental Damages: SC

    Why in the News?

    In a landmark ruling, the Supreme Court has empowered Pollution Control Boards (PCBs) across India with the authority to impose and collect restitutionary and compensatory damages under the Water and Air Acts.

    Key Highlights of Supreme Court Ruling:

    • Key Powers Granted:
      • Impose and collect restitutionary and compensatory damages.
      • Demand bank guarantees in anticipation of environmental harm.
    • Legal Basis:
      • Section 33A, Water Act, 1974: Power to issue directions for closure/regulation of industries and stoppage of utilities to enforce water pollution norms.
      • Section 31A, Air Act, 1981: Similar binding powers to control air pollution; non-compliance is a legal violation.

    About Central Pollution Control Board (CPCB):

    • Established: September 1974 under the Water (Prevention and Control of Pollution) Act, 1974; Also empowered under Air (Prevention and Control of Pollution) Act, 1981.
    • Role: Statutory technical body to promote clean air and water; provides services under the Environment (Protection) Act, 1986.
    • Key Functions:
      • Control and abate water and air pollution; promote stream and well cleanliness.
      • Advise the Central Government on pollution-related issues.
      • Coordinate with and assist State Pollution Control Boards (SPCBs); resolve disputes.
      • Monitor pollution in Union Territories via delegated powers under Water, Air, and Water Cess Acts.
    • Develops and revises:
      • National Ambient Air Quality Standards.
      • Water Quality Criteria from various sources.
      • Emission/Discharge Standards under Environment Protection Rules, 1986.
      • Bio-Medical Waste Incineration Norms.
      • Noise/Emission Limits for diesel, LPG, and CNG generators.
    • Minimal National Standards (MINAS) Issuance:
      • Covers effluent, emission, noise, and solid waste across industries.
      • Mandatory for State adoption as baseline standards.
      • Publishes COINDS (Comprehensive Industry Documents), manuals, and codes for pollution treatment and control systems.

    About State Pollution Control Boards (SPCBs):

    • Constitution: Formed by State Governments under the Water and Air Acts.
    • Functions:
      • Monitor and control local pollution.
      • Inspect industries and enforce compliance.
      • Advise state governments.
      • Conduct awareness campaigns.
      • Implement control programmes and collaborate with CPCB and local bodies.
    [UPSC 2018] How is the National Green Tribunal (NGT) different from the Central Pollution Control Board (CPCB)?

    1. The NGT has been established by an Act whereas the CPCB has been created by an executive order of the Government.

    2. The NGT provides environmental justice and helps reduce the burden of litigation in the higher courts whereas the CPCB promotes cleanliness of streams and wells and aims to improve the quality of air in the country.

    Which of the statements given above is/are correct?

    Options: (a) 1 only (b) 2 only * (c) Both 1 and 2 (d) Neither 1 nor 2

     

  • Asian Giant Tortoise reintroduced in Nagaland

    Why in the News?

    The Asian giant tortoise (Manouria emys), the largest tortoise in mainland Asia, has been reintroduced into the Zeliang Community Reserve in Nagaland’s Peren district.

    Asian Giant Tortoise reintroduced in Nagaland

    About Asian Giant Tortoise (Manouria emys):

    • It is the largest tortoise in mainland Asia.
    • Two subspecies: Manouria emys emys and Manouria emys phayrei.
    • Uniquely, it lays eggs above ground in leaf-litter nests.
    • Behaviour: It is solitary and active mostly during dawn and dusk.
    • Found in evergreen and bamboo forests across India, Bangladesh, Myanmar, Thailand, Malaysia, and Indonesia.
    • Habitat in India: Nengpui WLS, Nongkhyllem WLS, and North Cachar Hills.
    • Conservation status: IUCN – Critically Endangered; CITES – Appendix II; Wildlife Protection Act – Schedule IV.
    • Major threats: Illegal hunting for meat, habitat degradation, forest fires, and bamboo removal.
    [UPSC 2017] In India, if a species of tortoise is declared protected under Schedule I of the Wildlife (Protection) Act, 1972, what does it imply?

    Options: (a) It enjoys the same level of protection as the tiger*

    (b) It no longer exists in the wild, a few individuals are under captive protection; and how it is impossible to prevent its extinction

    (c) It is endemic to a particular region of India

    (d) Both (b) and (c) stated above are correct in this context.

     

  • Bird Deaths in Thar Desert

    Why in the News?

    A new study by the Wildlife Institute of India (WII) reveals that wind farms in the Thar Desert, Rajasthan, have the highest recorded bird mortality rates globally.

    Bird Deaths in Thar Desert

    Bird Mortality at Wind Farms: Key Findings

    • Study Details: Conducted across 3,000 sq. km in Jaisalmer, Rajasthan, covering 90 wind turbines and 272 bird species, including the critically endangered Great Indian Bustard.
    • Carcass Count: 124 bird carcasses found within 150m radius of turbines.
    • Annual Mortality Estimate: 4,464 birds per 1,000 sq. km, after corrections for detection gaps and scavenger interference.
    • Control Sites: 28 sites (500–2,000m from turbines) found zero carcasses — indicating turbines as the direct cause.
    • Reasons:
      • Policy Gap: Onshore wind projects in India do not require Environmental Impact Assessments (EIAs), which weakens ecological safeguards.

    India’s Wind Energy Growth:

    • Current Status: India added 3.5 GW of wind power in the first half of 2025 — an 82% YoY increase.
    • Total Installed Capacity: Now stands at 51.3 GW.
    • Untapped Potential: Estimated at 1163.9 GW at 150 meters above ground level (National Institute of Wind Energy).

    Comparison with Past Studies:

    • 2019 Studies: Recorded just 0.47 bird deaths per turbine/year in Kutch and Davangere.
    • Thar Desert Rate: 1.24 bird deaths per turbine/month — significantly higher.
    • Contributing Factors:
      • High bird density in Thar.
      • Location along Central Asian Flyway.
      • Collisions with turbine-linked power lines included in this study.

    Proposed Mitigation Measures:

    • Technological:
      • Paint one turbine blade for visibility.
      • Shut down turbines during peak migration or high-risk periods.
    • Planning-Based:
      • Careful Site Selection seen as most critical step.
      • Use of tools like AVISTEP (Avian Sensitivity Tool for Energy Planning), which maps avian sensitivity across India.
      • AVISTEP ranks zones as low to very high sensitivity — intended as a guide for site avoidance.
    [UPSC 2012] Vultures which used to be very common in Indian countryside some years ago are rarely seen nowadays. This is attributed to:

    Options: (a) the destruction of their nesting sites by new invasive species disease among them

    (b) a drug used by cattle owners for treating their diseased cattle persistent and fatal *

    (c) scarcity of food available to them

    (d) a widespread, persistent and fatal disease among them

     

  • Species in news: Alpine Musk Deer

    Why in the News?

    A Central Zoo Authority (CZA) report reveals a major conservation error — the critically endangered Alpine musk deer was wrongly replaced by the Himalayan musk deer in India’s breeding programmes.

    Species in news: Alpine Musk Deer

    Back2Basics: Central Zoo Authority (CZA):

    • Establishment: Formed in 1992 under Wildlife (Protection) Act, 1972.
    • Mandate: Captive breeding, zoo oversight, and assigning species to zoos.
    • Expanded Scope (2022): Includes rescue centres, off-display facilities, and conservation breeding centres.

    About Alpine Musk Deer (Moschus chrysogaster):

    • Not a true Deer: closer to goats and antelopes (Bovidae).
    • Musk Sac: Males have a visible musk sac between the testes.
    • Canines: Grows fang-like canines during the mating season.
    • Habitat: Found at 3,000–5,000 m in forests of the Himalayas.
    • Range: India (J&K, HP, Uttarakhand, Sikkim, Arunachal), Nepal, Bhutan, China.
    • Diet: Eats grasses, leaves, lichens, mosses, and twigs.
    • Behaviour: Solitary and crepuscular (active at dawn/dusk).
    • Legal Protection:  IUCN Status Critically Endangered (2014), CITES Appendix I; Indian Wildlife Act- Schedule I.
    • Threats: Poaching for musk and habitat loss.
    • Key Habitats: Askot, Gangotri & Kedarnath Wildlife Sanctuaries (Uttarakhand).
    [UPSC 2020] Which of the following are the most likely places to find the musk deer in its natural habitat?

    1. Askot Wildlife Sanctuary 2. Gangotri National Park

    3. Kishanpur Wildlife Sanctuary 4. Manas National Park

    Options: (a) 1 and 2 only * (b) 2 and 3 only (c) 3 and 4 only (d) 1 and 4 only

     

  • Why the ICJ’s advisory opinion on climate change opens the window for a new, restorative vision of environmental law in India

    Why in the News?

    Recently, the International Court of Justice (ICJ) delivered a landmark advisory opinion on July 23, 2025, clarifying the legal obligations of states regarding climate change.

    Note: The International Court of Justice (ICJ) is the principal judicial organ of the United Nations. While advisory opinions are not formally binding, they hold persuasive (Convince other) legal weight and reflect the Court’s authoritative interpretation of international law.

    What does the ICJ say about saving nature and the climate?

    • Nature is a climate actor, not just a victim: ICJ recognizes ecosystems like forests, oceans, and coral reefs as active parts of the climate system. Eg: Forests absorb CO₂ and regulate rainfall.
    • Protecting nature is a legal climate duty: Countries have a responsibility to safeguard nature as part of their climate obligations. Eg: Wetlands must be preserved to manage floods and store carbon.
    • Ecological literacy is essential: Decision-makers must understand ecosystem roles in climate regulation. Eg: Mangrove destruction worsens storm impact and carbon release.
    • Biodiversity and climate are equal: Climate action must not come at the cost of biodiversity. Eg: Solar parks should not destroy grasslands or wildlife zones.
    • Global justice includes nature’s rights: The ICJ promotes a shift from human-centred to eco-centred justice. Eg: Legal personhood to rivers (like Ganga) aligns with this approach.

    How can India align the ICJ view with Articles 21 and 48A of the Constitution?

    • Recognize environmental rights as part of Right to Life (Article 21): Link clean air, water, and a healthy ecosystem to the fundamental right to life. Eg: Supreme Court’s recognition of the right to a healthy environment in the Subhash Kumar case.
    • Implement Directive Principle on environment (Article 48A): Strengthen policies to protect and improve forests, rivers, and biodiversity. Eg: Initiatives like Namami Gange align with this duty.

    What are the roles of Tribals in India’s climate plans?

    The roles of tribals in India’s climate plans are crucial because they are deeply connected with nature and are key to conservation and climate resilience.

    • Traditional Ecological Knowledge: Tribals have deep understanding of local ecosystems, useful for conservation and climate adaptation. Eg: Bhil tribes, Madhya Pradesh – traditional water harvesting for drought resilience.
    • Forest and Biodiversity Guardianship: Indigenous communities act as forest protectors and biodiversity custodians, aiding carbon sequestration. Eg: Dongria Kondh, Odisha – protect Niyamgiri Hills’ biodiversity.
    • Sustainable Livelihood Practices: Tribes follow low-carbon, eco-friendly practices, supporting climate goals. Eg: Apatani tribe, Arunachal Pradesh – eco-friendly wet rice farming (growing rice in flooded fields).
    • Community-Based Climate Adaptation: Local innovation enables faster climate resilience and resource management. Eg: Women in Kutch, Gujarat – build check dams for water security.
    • Effective Implementation of Climate Schemes: Grassroots involvement improves policy success, ensures inclusive development. Eg: Van Dhan Yojana – empowers tribal collectives for sustainable forest use.

    Which laws should India improve to better protect nature and fight climate change?

    • Strengthen Environmental Impact Assessment (EIA): Make public consultations more transparent and science-based. Eg: Dilution in EIA 2020 draft faced criticism for reducing oversight on polluting projects.
    • Amend Forest Conservation Act (FCA): Ensure tribal rights and ecological value are protected during land diversion. Eg: FCA 2023 allowed exemptions for some forest lands, risking biodiversity loss.
    • Update Air (Prevention and Control of Pollution) Act, 1981: Include stricter penalties and real-time monitoring for industrial emissions. Eg: Delhi’s recurring smog highlights the law’s limited deterrence.

    Way forward:

    • Empower Local Communities: Recognize and support tribal and grassroots climate efforts through legal rights, funding, and capacity building.
    • Mainstream Climate in Policy Planning: Integrate climate adaptation and mitigation into urban planning, agriculture, and infrastructure development.
    • Promote Green Finance and Innovation: Incentivize clean technologies, nature-based solutions, and public-private partnerships for sustainable development.

    Mains PYQ:

    [UPSC 2023] The most significant achievement of modern law in India in the constitutionalization of environmental problems by the Supreme Court. Discuss this statement with the help of relevant case laws.

    Linkage: The article highlights that India’s Supreme Court has interpreted Article 21 (right to life) to include the right to a healthy environment, and the ICJ’s opinion internationalizes this idea, providing a strong basis for India’s legal framework to embrace a restorative vision.

  • [31st July 2025] The Hindu Op-ed: Restoring mangroves can turn the tide on India’s coastal security 

    PYQ Relevance:

    [UPSC 2019] Discuss the causes of depletion of mangroves and explain their importance in maintaining coastal ecology.

    Linkage: The article explicitly details the importance of mangroves, stating they are “critical in India’s pursuit of climate resilience, biodiversity conservation, and the empowerment of coastal communities”. It explains their role as “natural barriers, protecting coastal communities from cyclones, tidal surges, and erosion”, and their significance in “biodiversity conservation”. The article also discusses the threats leading to their “depletion,” such as “urban expansion, aquaculture, pollution, and changing climate patterns”.

     

    Mentor’s Comment:  India’s mangrove forests have come into focus due to growing efforts to restore and protect them amid increasing threats from urban expansion, climate change, and pollution. Recent successful restoration projects in Tamil Nadu, Gujarat, and Mumbai, along with support from government missions and private partners, highlight India’s growing role in mangrove conservation. These forests are vital for climate resilience, coastal protection, and biodiversity, making their preservation a national priority.

    Today’s editorial analyses India’s growing efforts to restore mangrove forests. This topic is important for GS Paper III (Environment) in the UPSC mains exam.

    _

    Let’s learn!

    Why in the News?

    Recently, mangrove restoration efforts in Tamil Nadu, Gujarat, and Mumbai have been successful.

    What is the extent of Mangroves in India?

    • India’s total mangrove cover is 4,992 sq km, accounting for 0.15% of the country’s geographical area (as per ISFR 2021).
    • West Bengal, Gujarat, and the Andaman & Nicobar Islands hold the largest mangrove areas, with West Bengal (Sundarbans) alone covering over 42% of the total.

    Why are mangroves vital for climate and coastal resilience in India?

    • Natural Coastal Shield: Mangroves act as buffers against cyclones, storm surges, and coastal erosion. Eg: During the 2004 tsunami, villages protected by mangroves in Tamil Nadu suffered less damage compared to those without them.
    • Climate Change Mitigation: They store “blue carbon” in biomass and deep soil, helping to absorb excess CO₂. Eg: India’s mangroves contribute significantly to carbon sequestration, aiding in climate targets under the Paris Agreement.
    • Biodiversity Hotspots: Provide breeding grounds for fish, crabs, birds, and other marine life. Eg: Thane Creek Flamingo Sanctuary in Mumbai supports over 180 bird species due to nearby mangroves.
    • Livelihood Support for Communities: Sustain traditional occupations like fishing, honey gathering, and crab farming. Eg: Sunderbans communities rely on mangroves for fishing and honey collection.
    • Disaster Risk Reduction: Reduce the impact of natural disasters by slowing floodwaters and stabilising shorelines. Eg: In Odisha, mangroves helped minimise damage during Cyclone Phailin (2013).

    What threatens India’s mangroves?

    • Urbanisation and Industrial Expansion: Mangrove areas are cleared for ports, housing, and industrial zones. Eg: Mangrove loss in Mumbai due to Navi Mumbai airport construction.
    • Aquaculture and Agriculture Encroachment: Conversion of mangrove land into shrimp farms or paddy fields disrupts ecosystems. Eg: Andhra Pradesh lost mangroves to extensive aquaculture projects.
    • Pollution: Discharge of industrial effluents, plastic, and sewage harms mangrove health. Eg: Thane Creek, Mumbai, faces heavy pollution impacting biodiversity.
    • Climate Change and Sea Level Rise: Changes in salinity, temperature, and rising sea levels affect mangrove regeneration. Eg: Sundarbans face submergence and loss due to rising sea levels.
    • Overexploitation of Resources: Excessive collection of wood, honey, and fodder leads to degradation. Eg: In West Bengal, unsustainable practices by local communities reduce forest cover.

    How has community involvement aided mangrove restoration in Tamil Nadu?

    • Collaborative Restoration Projects: Community members partnered with institutions like the M.S. Swaminathan Research Foundation and the Tamil Nadu Forest Department for restoring degraded mangroves. Eg: In Muthupettai’s Pattuvanachi estuary, locals helped implement a 115-hectare restoration plan.
    • Tidal Canal Digging for Hydrology Restoration: Villagers participated in digging 19 major canals to restore natural tidal flow, crucial for mangrove survival. Eg: This intervention successfully revived water movement in Muthupettai, enabling mangrove regrowth.
    • Seed Collection and Plantation: Locals actively collected and planted seeds of native mangrove species like Avicennia and Rhizophora. Eg: Over 4.3 lakh Avicennia seeds and 6,000 Rhizophora propagules were planted by community members.
    • Removal of Invasive Species: Community groups helped clear invasive weeds like Prosopis juliflora, which compete with mangroves for space and nutrients. Eg: In Kazhipattur near Buckingham Canal, Chennai, invasive plants were removed before mangrove restoration began.
    • Support for Green Missions and Monitoring: Local residents supported and maintained mangrove cover under the Green Tamil Nadu Mission, ensuring long-term success. Eg: Community participation helped double Tamil Nadu’s mangrove area from 4,500 ha to 9,000 ha (2021–2024).

    What is the role of corporate partnerships in mangrove revival in Mumbai?

    • Financial and Technical Support: Amazon’s Right Now Climate Fund invested $1.2 million (₹10.3 crore) in a restoration project along Thane Creek, enabling large-scale ecological rehabilitation.
    • Pollution Control and Ecosystem Restoration: Partnered with Hasten Regeneration and Brihanmumbai Municipal Corporation to install trash booms that intercept plastic waste, aiming to collect 150 tonnes over 3 years while planting 3.75 lakh mangrove saplings.
    • Community Empowerment and Livelihood Generation: Created paid employment opportunities for local women in planting and maintenance, linking ecological recovery with socio-economic upliftment.

    Why is Gujarat leading in mangrove restoration?

    • Ambitious Scale under MISHTI Scheme: Under the Mangrove Initiative for Shoreline Habitats and Tangible Incomes (MISHTI), launched in 2023, Gujarat planted over 19,000 hectares of mangroves within two years—far exceeding the national five-year target of 54,000 hectares.
    • Strategic Coastal Coverage & Biodiversity Focus: Gujarat holds about 23.6% of India’s total mangrove cover, with major plantations in Kutch, Bhavnagar, Surat, and Dumas-Ubhrat. These areas support critical ecological balance, biodiversity, and local livelihoods.
    • Strong Governance, Planning & Local Institutional Support: Efficient coordination between the Gujarat Forest Department, state environment agencies, and local communities has ensured success. Structured coastal mapping, restoration planning, and promotion of ecotourism-linked livelihoods have further strengthened outcomes.

    What are the steps taken by the Indian government? 

    • Green India Mission & State Missions: Through the National Green India Mission and state-level initiatives like the Green Tamil Nadu Mission, the government supports afforestation, ecosystem restoration, and community-based conservation efforts.
    • Inclusion in Coastal Regulation Zone (CRZ) Rules: Mangrove areas are designated as Ecologically Sensitive Zones (ESZ) under the CRZ Notification, restricting construction and promoting their protection through legal safeguards and regulatory oversight.

    Way forward: 

    • Strengthen Community-Based Conservation: Empower local communities through training, incentives, and formal roles in monitoring and maintaining mangroves to ensure sustainable, long-term protection.
    • Integrate Mangroves into Climate and Development Planning: Recognise mangroves as vital climate infrastructure by integrating them into coastal zone management, disaster resilience strategies, and carbon credit frameworks.