Coastal and Marine Issues — Revision Notes
⚡ 30-Second Revision
- CRZ 2019: — Replaced 2011 notification. 4 categories (CRZ-I, II, III, IV).
- NDZ: — Reduced to 50m for CRZ-IIIA (densely populated rural), 200m for CRZ-IIIB.
- FSI in CRZ-II: — Allowed as per current T&CP norms.
- NCZMA: — National Coastal Zone Management Authority, statutory body under EPA 1986.
- Article 48A: — DPSP, State to protect environment.
- Marine Pollution: — Plastic, oil, industrial, sewage, agricultural runoff.
- Key Ecosystems: — Mangroves (coastal protection, nurseries), Coral Reefs (biodiversity hotspots, bleaching threat).
- Blue Economy: — Sustainable use of ocean resources (fisheries, energy, tourism, biotech).
- Landmark Cases: — S. Jagannath (aquaculture), T.N. Godavarman (forests/sensitive areas).
- MPAs: — Gulf of Mannar, Gulf of Kachchh, Sundarbans, A&N Parks.
2-Minute Revision
Coastal and marine issues are critical for India due to its long coastline, impacting environment, economy, and livelihoods. The primary regulatory tool is the Coastal Regulation Zone (CRZ) Notification, 2019, issued under the Environment (Protection) Act, 1986.
It categorizes coastal areas into CRZ-I (ecologically sensitive), CRZ-II (developed), CRZ-III (rural), and CRZ-IV (water area), with varying restrictions. Key changes in CRZ 2019 include a reduced No Development Zone (NDZ) of 50 meters for densely populated rural areas (CRZ-IIIA) and relaxed Floor Space Index (FSI) norms in developed areas (CRZ-II), aiming to balance development and conservation.
Marine pollution, from sources like plastic, oil spills, and industrial discharge, poses severe threats to biodiversity and coastal communities. Habitat degradation, particularly of mangroves and coral reefs, exacerbates coastal erosion and reduces natural buffers.
Climate change impacts, such as sea-level rise and ocean acidification, are intensifying these challenges. The 'Blue Economy' concept offers a framework for sustainable utilization of ocean resources, encompassing fisheries, renewable energy, and marine tourism, but requires careful planning to ensure equitable benefits and environmental protection.
Governance challenges, including enforcement gaps and inter-agency coordination, remain significant. Judicial interventions, like the S. Jagannath case on aquaculture, have played a vital role in shaping policy.
Addressing these issues demands an integrated, multi-stakeholder approach.
5-Minute Revision
India's extensive coastline faces a confluence of environmental and developmental challenges, making 'Coastal and Marine Issues' a high-priority UPSC topic. The core regulatory framework is the Coastal Regulation Zone (CRZ) Notification, 2019, enacted under the Environment (Protection) Act, 1986.
This notification divides coastal areas into four categories: CRZ-I (ecologically sensitive, strict protection), CRZ-II (developed areas, construction on landward side of existing structures), CRZ-III (rural areas, with a No Development Zone - NDZ), and CRZ-IV (water area).
A significant change in CRZ 2019 was the reduction of the NDZ in densely populated CRZ-IIIA areas from 200m to 50m, and the relaxation of Floor Space Index (FSI) norms in CRZ-II, aiming to boost coastal development and tourism.
The National Coastal Zone Management Authority (NCZMA) and State CZMAs are responsible for its implementation and monitoring.
Marine pollution is a pervasive threat, stemming from land-based sources like plastic waste, untreated sewage, industrial discharge, and agricultural runoff, as well as sea-based sources like oil spills and shipping.
Its impacts are devastating, leading to biodiversity loss, contamination of seafood, and economic losses for fisheries and tourism. Habitat degradation is another major concern, with mangroves (natural coastal buffers, nurseries for fish) being cleared for development and coral reefs (biodiversity hotspots) suffering from bleaching due to rising ocean temperatures and acidification.
These losses increase coastal vulnerability to erosion and extreme weather events.
Climate change impacts are exacerbating all these issues, with sea-level rise threatening inundation of low-lying areas and ocean acidification impacting marine life. The 'Blue Economy' concept is India's strategy for sustainable utilization of ocean resources, covering sectors like fisheries, aquaculture, renewable energy, and marine biotechnology.
While offering immense economic potential, it must be pursued carefully to ensure environmental sustainability and protect the livelihoods of traditional fishing communities. Landmark judgments like S.
Jagannath v. Union of India (on aquaculture) and the T.N. Godavarman case (on forest protection, impacting coastal forests) underscore the judiciary's role in environmental protection.
Governance challenges include weak enforcement, inter-agency coordination issues, and balancing developmental pressures with conservation. Effective solutions require an Integrated Coastal Zone Management (ICZM) approach, emphasizing scientific planning, stakeholder participation, capacity building, and integrating climate change adaptation strategies.
Aspirants must connect these issues with broader themes like sustainable development, environmental governance, and disaster management, using current affairs to enrich their analysis.
Prelims Revision Notes
- CRZ Notification 2019: — Know the four main categories (CRZ-I, II, III, IV) and their sub-classifications (e.g., CRZ-IA, IB, IIIA, IIIB). Remember the specific NDZ limits: 50m for CRZ-IIIA, 200m for CRZ-IIIB. FSI in CRZ-II is now as per current T&CP norms. State CZMAs can approve projects up to 20,000 sq.m. Prohibited activities: setting up new industries, discharge of untreated waste, dumping of hazardous waste. Permitted activities: traditional fishing, certain port facilities, temporary tourism facilities in specific zones.
- National Coastal Zone Management Authority (NCZMA): — Statutory body under EPA 1986. Functions: review CZMPs, recommend clearances, address violations, coordinate with SCZMAs.
- Key Coastal Ecosystems:
* Mangroves: Salt-tolerant trees, found in intertidal zones. Provide coastal protection, carbon sequestration, fish nurseries. Major areas: Sundarbans, Bhitarkanika, Pichavaram. Threats: deforestation, aquaculture, pollution.
MISHTI scheme for conservation. * Coral Reefs: Biodiversity hotspots. Types: Fringing, Barrier, Atoll. Found in Gulf of Mannar, Gulf of Kachchh, Lakshadweep, A&N. Threats: Coral bleaching (due to rising temperatures, ocean acidification), pollution, destructive fishing.
- Marine Protected Areas (MPAs): — Important for biodiversity conservation. Examples: Gulf of Mannar Marine National Park (dugongs, corals), Gulf of Kachchh Marine National Park (corals), Mahatma Gandhi Marine National Park (A&N).
- Marine Pollution: — Sources: Plastic (land-based waste management crisis ), Oil spills (industrial disasters ), Industrial discharge, Sewage, Agricultural runoff. Impacts: Eutrophication, bioaccumulation, habitat destruction.
- Blue Economy: — Sustainable use of ocean resources. Sectors: Fisheries, aquaculture, ocean energy (tidal, wave), marine biotechnology, shipping, tourism. Initiatives: Deep Ocean Mission, Sagarmala Project.
- Constitutional Provisions: — Article 48A (DPSP for environment protection), Article 51A(g) (Fundamental Duty to protect environment).
- Landmark Judgments: — S. Jagannath v. UOI (1995) on sustainable aquaculture; T.N. Godavarman (1996) on forest protection, impacting coastal forests.
- Coastal Erosion: — Causes: Natural (waves, currents, storms), Anthropogenic (sand mining, coastal structures, habitat destruction). Impacts: Land loss, infrastructure damage.
Mains Revision Notes
- CRZ Notification 2019 - Critical Analysis: — Evaluate its success in balancing development (e.g., tourism, infrastructure, FSI relaxation) with conservation (e.g., CRZ-I protection, pollution abatement). Discuss criticisms regarding NDZ reduction and potential for ecological compromise. Emphasize the need for robust Coastal Zone Management Plans (CZMPs) and effective enforcement. Connect to environmental governance challenges.
- Blue Economy - Opportunities & Challenges: — Frame the blue economy as a pathway for sustainable development and blue economy . Opportunities: economic growth, employment, food security, strategic resources (Deep Ocean Mission). Challenges: overexploitation, marine pollution, climate change impacts, equitable distribution of benefits, impact on traditional livelihoods. Stress the need for inclusive policies and ecosystem-based management.
- Marine Pollution - Sources, Impacts, Mitigation: — Categorize sources into land-based (plastic, sewage, industrial, agricultural) and sea-based (oil spills, shipping). Detail ecological (biodiversity loss, habitat destruction), economic (fisheries, tourism), and social (health, livelihoods) impacts. Comprehensive mitigation strategies should include policy (EPR, international conventions), technology (bioremediation, waste-to-energy), infrastructure (STPs, solid waste management), and community participation (environmental movements for ocean conservation ).
- Coastal Vulnerability & Climate Change: — Discuss how sea-level rise, ocean acidification, and extreme weather events (cyclones, storm surges) exacerbate coastal erosion, salinization of aquifers (water crisis and marine pollution ), and habitat loss. Emphasize the need for climate change adaptation and resilience-building measures in coastal planning.
- Integrated Coastal Zone Management (ICZM): — Present ICZM as the ideal holistic approach. Key principles: inter-sectoral coordination, stakeholder participation, scientific basis, adaptive management, balancing conservation and development. Contrast with purely regulatory approaches. Highlight India's progress and gaps in adopting ICZM.
- Livelihoods of Coastal Communities: — Focus on traditional fishing communities. Discuss how development projects, pollution, and climate change impact their livelihoods. Emphasize the need for their inclusion in decision-making, protection of traditional fishing rights, and promotion of sustainable alternative livelihoods.
Vyyuha Quick Recall
- CORAL — (for Coral Reef Conservation):
* Community participation * Ocean zoning * Research initiatives * Awareness programs * Legal frameworks
- MARINE — (for Sources of Marine Pollution):
* Municipal waste * Agricultural runoff * Recreational activities * Industrial discharge * Navigation activities * Energy sector impacts (offshore oil/gas, spills)
- BLUE — (for Blue Economy Sectors):
* Biotechnology (marine biotech, pharmaceuticals) * Logistics (shipping, ports, maritime trade) * Utilities (desalination, waste management, coastal infrastructure) * Energy (offshore wind, tidal, wave energy, oil & gas)