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Subject: Environment

  • The real crisis in Indian fisheries

    Why in the News?

    The Government of India released its latest ocean fisheries assessment on February 11, 2026, claiming most marine fish stocks are sustainable, based on CMFRI data showing 91.1% of evaluated stocks in good health. This optimistic reading is contested by the FAO’s more cautious country profile and by fisheries scientists, who argue the deeper crisis lies in the continuing destruction of India’s inshore benthic ecosystem, not in aggregate stock numbers.

    Why does the government’s claim of largely sustainable marine fisheries not hold up to scrutiny?

    1. Landing-data methodology: CMFRI estimates fish stock availability from what fishers catch. It does not directly assess fish populations at sea.
    2. Catch data as a weak proxy: Catch volume cannot reliably indicate how much aquatic life remains in the sea. Finding shells on a beach does not predict the shell count underwater.
    3. FAO’s contrasting assessment: The FAO’s India country profile states marine fisheries production has plateaued. Most major stocks are already fully exploited.
    4. Unregulated capacity growth: The FAO links this plateau to unregulated fishing access. This access created overcapacity among medium and small trawlers competing for shrinking resources.
    5. Undisclosed procedures: CMFRI’s methodology for classifying stocks as sustainable is not made public. This limits independent verification.
    6. Possible strategic bias: Competitive pressure to match China’s fisheries output may be shaping how India presents its stock data.

    Is overfishing really the central problem facing India’s fisheries?

    1. Reframing the crisis: The more pressing concern is the decline of the inshore benthic environment. Benthic environment, the ecological zone at the seabed where bottom-dwelling organisms live.
    2. Expert consensus on destruction: Fisheries scientists and policymakers have described the inshore fishing environment as destroyed over the past year.
    3. Where productivity concentrates: India’s continental shelf is narrow across most of the coastline. This makes inshore waters the most productive fishing zone.
    4. Overlap of protective zones: Territorial waters within 12 nautical miles largely overlap with this continental shelf. These waters support the breeding of commercially valuable species such as shrimp.
    5. Ground-level testimony: Fishers along the Tamil Nadu coast report consistent declines in catch. Many previously common species have disappeared.

    What is driving the destruction of India’s inshore fishing grounds?

    1. Disrupted nutrient flow: Dams on major rivers block land-based nutrients from reaching the sea. This weakens the coastal food chain.
    2. Mangrove loss: Ongoing destruction of mangroves removes critical breeding habitat for fish.
    3. Multi-source pollution: Industrial, agricultural, and urban pollution enters the sea. This degrades inshore water quality.
    4. Mechanised trawling’s foreign origins: Semi-industrial trawling was introduced to India from abroad around 1960. It has since expanded on a large scale.
    5. Uncontrolled fleet growth: India now operates 64,414 mechanised fishing vessels. There are no restrictions on new entries.
    6. Technological escalation: Existing vessels are being retrofitted with more powerful Chinese engines. This increases their catch capacity further.
    7. Continuous seabed disturbance: Trawlers plough the inshore seabed continuously. This causes a decline in all animal and plant life in heavily trawled zones.

    What limited external reference points does the article offer on managing trawling pressure?

    1. Assessment method abroad: Other fishing nations reportedly rely on direct at-sea stock assessments rather than catch data alone. The article does not name specific countries or institutions.
    2. China as competitive pressure, not model: China is referenced only as a competitor whose fisheries growth may be biasing India’s reporting. It is not presented as an institutional example.
    3. Palk Bay as cross-border conflict: Indian mechanised trawlers cross into Sri Lankan waters in the Palk Bay. This shows domestic overcapacity exporting itself as a bilateral fisheries conflict.

    Why do existing rules meant to protect inshore waters fail in practice?

    1. Toothless zone restriction: Mechanised boats are barred from fishing within 5 nautical miles of shore. This restriction lacks enforcement.
    2. Limited seasonal relief: A two-month annual ban on mechanised boat fishing allows some stock rejuvenation. It does not address year-round degradation.
    3. Patrol capacity gap: Coastal states lack sufficient staff and craft to monitor and enforce inshore fishing boundaries.
    4. Exclusion of fishers from governance: Governments have kept fishers out of management roles. This removes a source of on-ground enforcement and information.
    5. Competing fleets pushed outward: Both small-scale and mechanised fishers are being forced toward offshore and deep-sea zones as inshore waters degrade.

    Does redirecting fishers toward deep-sea fishing resolve the crisis in India’s fisheries?

    1. Government’s proposed shift: The government is encouraging fishers to move toward deep-sea fishing. It views this as untapped potential.
    2. FAO’s caution on deep-sea potential: The FAO estimates deep-sea fishing can deliver only a marginal increase in output. It is not a transformative gain.
    3. New costs imposed on fishers: Shifting to distant waters requires fishers to bear higher fuel and technology expenses.
    4. Root problem left unaddressed: The shift avoids confronting marine pollution and unregulated mechanised trawling. These remain the actual drivers of inshore decline.
    5. Political economy obstacle: Mechanised boat fishers wield disproportionate numeric and political influence. This obstructs reform of inshore management.

    Conclusion

    The government’s sustainability claim rests on landing data, not direct stock assessments, and says nothing about the condition of the inshore seabed itself. The actual crisis lies in the continuing degradation of inshore fishing grounds, driven by an unregulated and politically entrenched mechanised trawling fleet that existing laws cannot enforce against. Redirecting fishers toward deep-sea fishing does not resolve this; it relocates the burden while leaving inshore governance unreformed. Genuine sustainability requires stronger coastal governance, enforceable trawling limits, and empirical assessment of the benthic environment itself.

  • [4th July 2026] The Hindu OpED: Building water security in a rapidly drying India 

    PYQ Relevance[UPSC 2021] How and to what extent would micro-irrigation help in solving India’s water crisis?
    Linkage: The PYQ examines demand-side water management through efficient irrigation to address India’s growing water stress. The editorial argues that India’s water crisis is rooted in governance and inefficient water use, and highlights micro-irrigation, wastewater reuse, climate-resilient infrastructure, and basin-level water accounting as key solutions for achieving long-term water security.

    Mentor’s Comment

    India is witnessing an intensifying water crisis, with major cities facing acute shortages despite the onset of the monsoon. The crisis exposes that water security is fundamentally a governance and infrastructure challenge rather than merely a rainfall deficit, requiring a shift from reactive supply augmentation to resilient water management.

    What has changed in India’s water crisis, and why does it matter now?

    1. Urban water stress: Cities such as Delhi, Bengaluru and Mussoorie are experiencing severe shortages despite annual monsoon cycles.
    2. River basin distress: According to CEEW, 11 of India’s 15 major river basins have fallen below water stress levels, with several approaching water scarcity thresholds.
    3. Groundwater depletion: Aquifers are being extracted beyond sustainable recharge rates, reducing long-term water availability.
    4. Climate variability: Erratic rainfall is increasing floods and droughts simultaneously, making historical rainfall patterns unreliable for planning.
    5. Water insecurity: The crisis has shifted from seasonal shortages to persistent risks affecting households, agriculture, industries and urban economies.
    6. Urban examples: Delhi, Bengaluru and Mussoorie illustrate that even major urban centres are facing recurring water shortages.
    7. Global context: Nearly 4 billion people face severe water scarcity for at least one month every year.

    Why is India’s water crisis fundamentally a governance problem rather than a scarcity problem?

    1. Infrastructure deficit: Poor maintenance, ageing pipelines and inadequate storage reduce effective water availability.
    2. High transmission losses: Significant quantities of treated water are lost before reaching consumers.
    3. Limited wastewater treatment: Large volumes of wastewater remain untreated instead of being recycled.
    4. Weak planning: Investments are rarely guided by climate-risk assessments or basin-level planning.
    5. Data deficiency: Absence of comprehensive water accounting prevents efficient allocation and demand management.
    6. Limited water endowment: India possesses only 4% of the world’s freshwater resources but supports 18% of the global population.
    7. Water scarcity threshold: Several river basins have fallen below 1,000 m³ of water availability per person per year, indicating water scarcity.

    Why must climate resilience become the foundation of future water infrastructure?

    1. Risk-based planning: Climate-risk assessments should guide investments in reservoirs, pipelines and urban water systems.
    2. Protecting critical infrastructure: Water planning should prioritise hospitals, schools, electricity networks and other essential services.
    3. Localised assessment: Urban Local Bodies and Panchayats require climate-risk mapping suited to local conditions.
    4. Targeted financing: Mechanisms such as the Urban Challenge Fund can finance resilient water infrastructure projects.
    5. Preventive investment: Building resilience before disasters is more cost-effective than post-crisis reconstruction.

    Why is demand-side management more important than expanding water supply?

    1. Wastewater reuse: Treated wastewater should replace freshwater for industrial and non-potable urban uses.
    2. Circular water economy: Recycling reduces freshwater extraction and improves long-term sustainability.
    3. Micro-irrigation: Drip and sprinkler systems significantly improve irrigation efficiency.
    4. Crop diversification: Farmers should shift towards less water-intensive and higher-value crops where feasible.
    5. Risk protection: Affordable crop insurance encourages farmers to adopt climate-resilient agricultural practices.

    Why can technology strengthen water governance only if supported by institutional reforms?

    1. Smart metering: Digital meters improve monitoring of water consumption and reduce leakages.
    2. Artificial Intelligence: AI can detect distribution losses and optimise water supply networks.
    3. Water accounting: Basin-level measurement of withdrawals, losses and consumption enables evidence-based allocation.
    4. Transparency: Reliable public data discourages over-extraction and improves accountability.
    5. Institutional capacity: Technology succeeds only when supported by capable local institutions and effective governance.

    Conclusion

    India’s water crisis reflects a failure of governance rather than a failure of rainfall. Climate-resilient infrastructure, efficient water reuse, demand-side management and transparent data systems must replace the traditional focus on expanding water supply. Water security will ultimately depend on treating water as a managed economic and ecological resource rather than an unlimited public good.

  • Salt Marsh Restoration on Oléron Island

    Why in News?

    The revival of the traditional salt harvesting profession on Oléron Island, France, is gaining attention as restored salt marshes help protect coastal areas from the increasing impacts of climate change, especially marine flooding.

    Key Highlights

    • The profession of salt worker disappeared from Oléron Island in the 1980s but has been revived with support from local authorities.
    • Salt marshes are being restored not only for salt production but also as a nature-based solution for climate adaptation.
    • These marshes act as buffer zones, reducing the impact of coastal flooding and storm surges.
    • Climate change has increased the frequency and intensity of marine flooding, making coastal ecosystem restoration increasingly important.

    What are Salt Marshes?

    • Salt marshes are coastal wetlands found in the intertidal zone between land and sea.
    • They are regularly flooded by seawater during high tides.
    • They are dominated by salt-tolerant (halophytic) vegetation such as grasses, sedges, and shrubs.
    • Salt marshes commonly occur in estuaries, lagoons, deltas, and sheltered coastlines.

    Ecological Importance

    • Act as natural buffers, reducing the impact of storm surges and coastal erosion.
    • Absorb and store excess floodwater, lowering flood risks.
    • Trap sediments and improve water quality.
    • Serve as breeding and nursery grounds for fish, crustaceans, and migratory birds.
    • Store large amounts of blue carbon, helping mitigate climate change.

    What is Blue Carbon?

    • Blue carbon refers to carbon captured and stored by coastal and marine ecosystems such as: Mangroves, Salt marshes, and Seagrass meadows
    • These ecosystems sequester carbon in both vegetation and underlying sediments for long periods.

    Threats to Salt Marshes

    • Coastal development and land reclamation.
    • Sea level rise due to climate change.
    • Pollution and eutrophication.
    • Conversion for agriculture and aquaculture.
    • Alteration of natural tidal flows.

    Relevance for India

    • India has significant coastal wetlands, including mangroves, salt marshes, mudflats, and seagrass meadows, which play a crucial role in coastal protection and climate resilience.
    • Restoration of these ecosystems supports India’s commitments under the Ramsar Convention, National Coastal Mission, and climate adaptation strategies.

    [2021] What is blue carbon?

    [A] Carbon captured by oceans and coastal ecosystems

    [B] Carbon sequestered in forest biomass and agricultural soils

    [C] Carbon contained in petroleum and natural gas

    [D] Carbon present in atmosphere

  • India seeks clarity as ‘tipping points’ rock Bonn climate talks

    Why in the News?

    At the Bonn climate talks held in Germany from June 8-18, India urged caution and clarity in defining and using the term “tipping points.” The European Union termed this call “coordinated misinformation” and “obstruction,” exposing a clash between scientific caution and political urgency in climate negotiations. This dispute surfaced unresolved definitional uncertainty at the core of a term now central to global climate diplomacy.

    Why is it difficult to define and project climate tipping points despite their significance?

    1. Threshold definition: A tipping point is a threshold beyond which part of the earth’s climate system shifts into a new state.
    2. Self-reinforcing feedback: Crossed thresholds trigger changes that resist reversal on human timescales even after the original cause is removed. Arctic sea ice melt exposes dark ocean that absorbs more heat, driving further melting.
    3. Non-linear behaviour: Tipping points do not track the pace of greenhouse gas accumulation. Small temperature increases can trigger large, self-amplifying feedback loops.
    4. Range of known thresholds: Identified tipping points include Amazon rainforest dieback into savannah, Atlantic Meridional Overturning Circulation (AMOC: ocean current system redistributing heat between the Atlantic’s north and south) collapse, coral reef mass-bleaching, monsoon shifts over India and West Africa, and Greenland ice sheet disintegration.
    5. Projection constraint: Reliable projection is limited by both the complexity of the climate system and uncertainty in input data.
    6. Retrospective identification: Tipping points can be confirmed with confidence mainly through post-facto historical analysis, not predicted reliably in advance.

    Does the tipping points framework help or hinder climate policymaking?

    1. Communicator divide: Climate communicators disagree on the framework’s value. Some treat tipping points as a catalyst for urgent action. Others argue their inherent uncertainty undermines their use in policymaking.
    2. Lived disasters are more persuasive: Directly experienced disasters, such as extreme rainfall or heatwaves, are often more effective than tipping points at raising public awareness and driving climate action.
    3. Disproportionate risk: The risks tipping points carry exceed those of routine climate disasters. This raises unresolved questions about how societies adapt once a threshold is breached.
    4. Positive tipping points exist: Social tipping points can also work in favour of climate goals. Renewable energy adoption is expected to become self-sustaining once it crosses a critical adoption level.

    Why do scientists struggle to project when specific tipping points, such as Atlantic Meridional Overturning Circulation (AMOC) collapse or Amazon dieback, will occur?

    1. AMOC uncertainty: Scientists cannot reliably project when the AMOC will collapse. A Science Advances study found it could slow by 51% rather than collapse outright by 2100 under a medium-emissions scenario.
    2. Model-dependent findings: This projection ranks the credibility of competing model outputs rather than forecasting a single outcome. Uncertainty is embedded in the underlying data and cannot be removed by collecting more data.
    3. Amazon complexity understated: Projections of Amazon dieback based on climate data alone miss the effects of cattle-ranching and deforestation, understating the risk of a shift to savannah.
    4. Human stakes ignored: The Amazon rainforest’s fate is tied to millions of tribal and urban residents and numerous artisanal enterprises, making projection errors socially consequential.
    5. Abruptness contested: Some scientists dispute that tipping points are abrupt. Ice sheets can deplete over thousands of years, a timescale far from abrupt for human observers.

    Why is the popular belief that 1.5°C marks a tipping point scientifically incorrect, and why does this matter for climate negotiations?

    1. Popular misconception: A common but incorrect belief holds that 1.5°C of surface warming is itself a tipping point. Research published in 2019 found this confusion persists even among climate negotiators.
    2. Political origin of the number: Negotiators adopted 1.5°C and 2°C as political targets at the 2015 COP21 talks, based on evidence that warming beyond these levels increasingly disrupts the climate.
    3. Targets are not thresholds: These temperature goals are political targets, not tipping points in themselves.
    4. Stakes of the confusion: Conflating a political target with a scientific threshold weakens the precision needed to communicate real tipping point risks during negotiations.

    Why did India’s call for definitional caution at the Bonn talks get labelled misinformation by the European Union?

    1. India’s position: India argued at Bonn that the term “tipping point” carries “definitional challenges” and urged care in its use.
    2. EU’s response: The European Union characterised this caution as “coordinated misinformation” and “obstruction.”
    3. Independent scientific validation: India’s position mirrors concerns already acknowledged in independent research and state-led efforts, including a U.K. Meteorological Office project on building consensus on tipping point terminology.
    4. Documented barrier: A project document from this effort states that unclear and inconsistent terminology for concepts such as tipping points, irreversibility, collapse, and shutdown presents a substantial barrier to understanding earth system risks.

    What are the risks of miscommunicating tipping points, and what should climate discourse guard against?

    1. Trust through honesty: Scientists and communicators broadly agree that clearly communicating scientific uncertainty builds trust rather than eroding it.
    2. Symmetrical credibility risk: Both false alarm and false hope damage credibility when a projection or forecast fails to materialise.
    3. Risk over certainty: The risk implicit in tipping points, rather than certainty about their timing, is significant enough to warrant action.
    4. Framework criticised: A 2025 Nature Climate Change article by researchers from Canada, the U.K., and the U.S. criticised the tipping points framework for oversimplifying complex natural and human system dynamics and for conveying urgency without a meaningful basis for climate action.
    5. No threshold for doomism: The same researchers noted climate change is already causing demonstrable harm, and that no specific temperature increment marks a boundary between the current dangerous climate and a future catastrophic one, leaving no justification for either doomism or paralysis.

    Conclusion

    Definitional ambiguity around “tipping points” is a genuine and internationally acknowledged scientific challenge, not evidence of misinformation. The greater risk lies not in questioning terminology but in conflating scientific uncertainty with either false alarm or paralysis. Climate negotiations need clearer, consensus-based terminology to preserve scientific credibility without diluting the urgency of climate action.

    PYQ Relevance

    [UPSC 2021] Describe the major outcomes of the 26th session of the Conference of the Parties (COP) to the United Nations Framework Convention on Climate Change (UNFCCC). What are the commitments made by India in this conference?

    Linkage: The question examines the functioning of the UNFCCC climate negotiation process and India’s negotiating position in global climate governance. The article discusses India’s intervention at the Bonn Climate Conference under the UNFCCC, where it sought greater clarity on the scientific and policy use of “climate tipping points”.

  • India Adds 709 New Species to Its Biodiversity Database

    Why in News?

    India added 709 new species to its faunal database and 353 plant taxa in 2025, reaffirming its status as one of the world’s mega-diverse countries.

    Faunal Discoveries

    • 709 additions: 483 species new to science. 226 species recorded for the first time in India.
    • Total recorded fauna: 1,05,953 species.
    • Top States: Kerala (98), West Bengal (76), Karnataka (67), and Arunachal Pradesh (65)
    • Major Groups: Hymenoptera (106), Lepidoptera (65), Diptera (64), Arachnida (64), Coleoptera (55), and Pisces (50)
    • Notable Discoveries
      • Myotis himalaicus (Himalayan bat)
      • Ptyctolaemus mamdaphaensis & P. siangensis (green fan-throated lizards)
      • Lycodon irwini (Irwin’s wolf snake)

    Floral Discoveries

    • 353 plant taxa added: 221 new to science. 132 new distributional records.
    • Top States: Arunachal Pradesh (49), Uttarakhand (39), and Kerala (37)
    • Composition: Angiosperms: 154, Pteridophytes: 3, Bryophytes: 13, Lichens: 62, Fungi: 93, Algae: 22, Microbes: 6
    • Notable Discoveries
      • Polystichum siangense (fern)
      • Miliusa beddomei (custard apple relative)
      • Hericium indicum (edible tooth fungus)

    [2022] With reference to “Gucchi” sometimes mentioned in the news, consider the following statements:
    1. It is a fungus.
    2. It grows in some Himalayan Forest areas.
    3. It is commercially cultivated in the Himalayan foothills of north-eastern India.
    Which of the statements given above is/are correct?

    [A] 1 only

    [B] 3 only

    [C] 1 and 2

    [D] 2 and 3

  • White-rumped Vulture Electrocuted in Mudumalai

    Why in the news?

    A radio-tagged, captive-bred White-rumped Vulture released in Mudumalai Tiger Reserve (Tamil Nadu) was electrocuted after coming into contact with a power line, marking the failure of the first reintroduction attempt of a captive-bred bird into the landscape.

    White-rumped Vulture (Gyps bengalensis)

    • Scientific name: Gyps bengalensis
    • IUCN Status: Critically Endangered
    • Wildlife (Protection) Act, 1972: Schedule I
    • CITES: Appendix II
    • Distribution: India, Nepal, Bangladesh, Pakistan. In South India, Mudumalai Tiger Reserve hosts one of the last viable breeding populations.

    Why are White-rumped Vultures Declining?

    • Veterinary use of Diclofenac, causing kidney failure.
    • Electrocution from power lines.
    • Collision with transmission lines.
    • Poisoning from contaminated carcasses.
    • Habitat degradation and food scarcity.

    [2017] In India, if a species of tortoise is declared protected under Schedule I of the Wildlife (Protection) Act, 1972, what does it imply?

    [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 not 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.

  • What are the consequences of illegal mining? Discuss the ministry of environment and forests’ concept of “GO AND NO GO” zones for coal mining.

  • Enumerate the National Water Policy of India. Taking river Ganges as an example, discuss the strategies which may be adopted for river water pollution control and management. What are the legal provisions for management and handling of hazardous wastes in India?

  • Should the pursuit of carbon credit and clean development mechanism set up under UNFCCC be maintained even through there has been a massive slide in the value of carbon credit? Discuss with respect to India’s energy needs for economic growth.

  • Environmental Impact Assessment studies are increasingly undertaken before project is cleared by the government. Discuss the environmental impacts of coal-fired thermal plants located at Pitheads.