Ecosystem Conservation: Wetlands, Mangroves & Corals

1. VALUATION OF ECOSYSTEM SERVICES

Cue Words	Notes
Millennium Ecosystem Assessment: Four Categories	**Provisioning Services**: Tangible commodities harvested directly (food, timber, freshwater, medicinal plants). **Regulating Services**: Environmental regulation benefits (carbon sequestration, micro-climate control, water filtration, crop pollination). **Supporting Services**: Fundamental ecological processes underlying all others (soil formation, nutrient cycling, primary biomass production). **Cultural Services**: Non-material values (aesthetic appreciation, religious sacred groves, ecotourism).
Payment for Ecosystem Services (PES)	Financial compensation mechanisms for local and tribal custodians who protect regional watersheds and carbon reserves — converting a non-market externality (ecosystem stewardship) into a monetised, incentive-compatible service.

> **Summary**: The four-category MEA framework gives ecosystem benefits a common accounting language, and PES schemes operationalise that framework by paying local custodians directly for the regulating and supporting services they protect — bridging the gap between ecological value and market incentives.

2. CONSERVATION SCHEMES FOR FRAGILE ECOSYSTEMS

Cue Words	Notes
Wetland Conservation: Amrit Dharohar	National initiative to preserve the ecological character of Ramsar sites, focusing on local community employment, nature-based tourism, and conserving water-logged carbon sinks. India's Ramsar network stands at 99 sites covering over 1.3 Million Hectares; Tamil Nadu leads with 20 sites, followed by Uttar Pradesh (12) and Punjab (6).
Mangrove Restoration: MISHTI	**MISHTI = Mangrove Initiative for Shoreline Habitats & Tangible Incomes**: Merges funding from **MGNREGS** (rural labour) and **CAMPA** (compensatory afforestation fund) to plant mangroves on coastal mudflats and salt flats. Target: restoring **54,000 hectares** of mangrove ecosystems by 2028; current mangrove cover stands at **4,991.68 sq km** (~0.15% of TGA), anchored by the Sundarbans.
Coral Reef Restoration: Biorock Technology	Submerging steel frames carrying low-voltage electrical currents accelerates calcium-carbonate crystallisation, allowing corals to grow 3x to 4x faster and survive thermal-bleaching stress — a direct technological response to rising sea-surface temperatures.

> **Summary**: Amrit Dharohar, MISHTI, and Biorock together give India dedicated, funding-convergent instruments for its three most climate-exposed ecosystems — wetlands, mangroves, and coral reefs — each pairing ecological restoration with a livelihood or technological lever specific to that habitat.

3. GRASSLAND CONSERVATION & INVASIVE SPECIES CHALLENGES

Cue Words	Notes
The Grassland 'Wasteland' Classification Problem	Grasslands are historically classified as "wastelands" in official land records, allowing their diversion for industrial plants and solar fields — threatening species like the Great Indian Bustard (GIB), whose habitat has no equivalent statutory protection to forests or wetlands.
Fragmentation & Eutrophication	**Ecosystem Fragmentation**: Linear structures (roads, rail lines) divide habitats, causing genetic isolation and human-wildlife conflict. **Eutrophication**: Nitrogen-phosphorus agricultural runoff causes algal blooms, depleting dissolved oxygen and creating aquatic dead zones — directly linked to fertiliser overuse patterns also driving land degradation.
Water Stress Context	CGWB classifies 14% of groundwater blocks as over-exploited; per-capita water availability has dropped to 1,486 cubic metres, pushing India below the global water-stress threshold of 1,700 cubic metres — tightening the resource base that wetland and grassland ecosystems depend on.

> **Summary**: Grasslands remain India's most institutionally neglected ecosystem — legally invisible as "wasteland" even as fragmentation, eutrophication, and tightening water stress compound the pressure on the species (like the GIB) and habitats that depend on them.

4. COASTAL REGULATION ZONE (CRZ): THE LAND-SEA INTERFACE

Cue Words	Notes
Statutory Basis & Zonal Classification (CRZ 2019)	Declared under the **Environment (Protection) Act, 1986** by MoEFCC; over **170 Million people** live along India's coastline, making CRZ rules central to balancing human safety with ecological stability. **CRZ-I (Ecologically Sensitive)**: CRZ-IA (mangroves, corals, turtle-nesting grounds, sacred groves) — no construction allowed; CRZ-IB (inter-tidal zone) — only pipelines/salt pans permitted. **CRZ-II (Urbanised)**: Construction allowed landward of existing roads/structures in municipal limits. **CRZ-III (Rural)**: split into III-A (density >2,161/sq km, NDZ reduced 200m→50m from HTL) and III-B (NDZ remains 200m). **CRZ-IV (Marine)**: Low Tide Line to 12 nautical miles, regulating sewage/industrial discharge.
2019 Reform Rationale & Erosion Risk	NDZ relaxation in high-density CRZ-III areas aims to boost eco-tourism (resorts, shacks) and de-freezes Floor Space Index in CRZ-II for vertical redevelopment in crowded coastal cities. Critics warn the shrunk buffer exposes construction directly to storm surges, high-tide flooding, and climate-driven shoreline erosion — a direct trade-off against the ecosystem-protection goals of CRZ-I.

> **Summary**: CRZ 2019's four-tier zonation gives coastal ecosystems (mangroves, corals, inter-tidal flats) formal protection under CRZ-I while simultaneously loosening development buffers in CRZ-III/II for tourism and urban redevelopment — a policy tension mirroring the grassland "wasteland" dilemma of prioritising economic use over fragile-ecosystem protection.

UPSC Mains PYQs

• Coastal Regulation Zone: The CRZ Notification aims to balance environmental preservation with economic activities. Critically analyse the key changes introduced in the CRZ Notification, 2019, and their implications for coastal ecological resilience. (15 Marks, 250 Words)
• Ecosystem Services & Wetlands: Wetlands are often referred to as the 'Kidneys of the Landscape' because of their natural water filtration capacity. Explain the four categories of ecosystem services and discuss the threat of eutrophication. Assess the role of the Amrit Dharohar Scheme in wetland diplomacy. (15 Marks, 250 Words)
• Mangrove Conservation: Discuss the ecological role of mangroves in coastal defense against cyclonic storms. Evaluate the MISHTI scheme in aligning coastal afforestation with local community livelihood targets. (10 Marks, 150 Words)
• Grassland Ecosystems: Discuss why India's grasslands remain among its most neglected ecosystems. Examine the implications of their "wasteland" classification for species like the Great Indian Bustard. (10 Marks, 150 Words)
• Coral Reef Restoration: Examine emerging technologies such as Biorock for coral reef restoration in India. How can such interventions help build climate resilience in coastal ecosystems? (10 Marks, 150 Words)