Importance of Wetlands — Ramsar Convention UPSC Notes

Importance of Wetlands – Ramsar Convention, Depletion & Mitigation | UPSC Notes | Legacy IAS

📗 UPSC CSE 2026 · GS Paper III · Environment & Ecology · Legacy IAS, Bangalore

Legacy IAS · Bangalore

Importance of Wetlands

Wetland functions, Ramsar Convention, Montreux Record, reasons for depletion, mitigation strategies, key Indian Ramsar sites — all simplified with memory tools, PYQs, MCQs and FAQs.

UPSC PrelimsGS Paper III Ramsar ConventionMontreux Record Indian Ramsar SitesPYQ 2014–2022 Amrit Darohar
Foundation
What Are Wetlands?

Wetlands are where land meets water — transitional ecosystems that do the work of both.

Wetlands are transitional zones between terrestrial and aquatic ecosystems — areas where water is the primary factor controlling the environment and the associated plant and animal life. They may be permanently or seasonally flooded, and range from freshwater to saltwater.

Official Definition — Ramsar Convention / Wetlands Rules 2010

“An area of marsh, fen, peatland or water; natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine water the depth of which at low tide does not exceed six metres, and includes all inland waters such as lakes, reservoir, tanks, backwaters, lagoon, creeks, estuaries and man-made wetlands and the zone of direct influence on wetlands, that is to say the drainage area or catchment region of the wetlands as determined by the authority.”

Types of Wetlands

TypeDescriptionIndian Examples
MarshesShallow, periodically flooded lands with herbaceous (non-woody) vegetation; reeds and grasses dominateKeoladeo Ghana (Bharatpur), Chilika margins
SwampsFlooded lands dominated by woody vegetation (trees and shrubs) — forested wetlandsSundarbans mangrove swamp, Andaman swamp forests
BogsPeat-accumulating wetlands, low nutrients, acidic, rainfall-fed (ombrotrophic), sphagnum moss dominantHigh Himalayan bogs (Kashmir, Uttarakhand alpine zones)
FensPeat-accumulating wetlands fed by groundwater and surface water — less acidic than bogsTerai grasslands along Nepal border
EstuariesWhere river meets sea — brackish transition zone; highly productiveMahanadi estuary, Godavari-Krishna delta, Sundarbans
Coastal LagoonsShallow coastal water bodies separated from the ocean by a barrierChilika Lake (largest in Asia ★), Pulicat Lake
FloodplainsLow-lying areas along rivers flooded periodically; rich alluvial soilGanga floodplain (UP, Bihar), Brahmaputra floodplain
MangrovesTidal forests in tropical/subtropical coastlines; salt-tolerant; unique root adaptationsSundarbans ★, Godavari delta, Gujarat coast
Man-made WetlandsReservoirs, tanks, paddy fields, aquaculture ponds, sewage treatment pondsHarike Wetland (Punjab — reservoir), paddy fields across India
★ UPSC Key Facts — Wetland Basics
  • Wetlands cover about 6% of Earth’s land surface but store 30% of terrestrial carbon
  • 40% of all world’s species live or breed in wetlands — extraordinary biodiversity per unit area ★
  • Wetlands are called “nurseries of life” — 40% of animals breed in wetlands
  • Wetlands are called “kidneys of the Earth” — they filter and purify water ★ (UPSC 2022 PYQ)
  • Wetlands are called “carbon sinks” — peatlands alone store 30% of land carbon in only 3% of land area
  • India has over 75 Ramsar sites — more than any other South Asian country
Ecosystem Services
Importance of Wetlands

Wetlands deliver more ecosystem services per unit area than any other ecosystem. Use the SWIFT-FC acronym to remember them all.

💡 Memory Acronym — SWIFT-FC

Every letter = one major wetland function. UPSC often gives 4–5 of these in MCQ options and asks which are correct:

S · W · I · F · T · F · C

S
Sediment & Nutrient Trapping
Wetland vegetation slows water flow → suspended sediment drops out → wetlands trap silt, nutrients (N, P), and pollutants before they reach rivers, lakes, or the ocean. Reduces agricultural runoff impact downstream. This is the “filter/kidney” function that purifies water. ★
W
Water Purification
Aquatic plants and biofilms absorb heavy metals, excess nutrients, pesticides, and pathogenic bacteria from water passing through wetlands. Natural water treatment — working 24/7 for free. India: Constructed wetlands are increasingly used as low-cost sewage treatment in small towns. The kidneys of the Earth ★ (UPSC 2022).
I
Infiltration (Groundwater Recharge)
Wetlands hold and slowly release water into the ground, recharging aquifers. Critically important in India where groundwater extraction (89 BCM/year) far exceeds recharge. Loss of wetlands → groundwater depletion accelerates. India: Keoladeo Ghana wetland recharges groundwater in Rajasthan’s otherwise dry landscape. Atal Bhujal Yojana specifically targets wetland restoration for groundwater recharge.
F
Flood Control & Shoreline Stabilization
Wetlands absorb and store excess water during floods, releasing it slowly — reducing peak flood levels downstream. Mangroves reduce storm surge height by 50–70%. India: Sundarbans reduced damage from Cyclone Aila (2009) — natural sea wall protecting West Bengal and Bangladesh. Destruction of Kerala’s Kuttanad wetlands contributed to worsening floods in 2018.
T
Tourism, Recreation & Cultural Value
Wetlands support ecotourism (birdwatching, boating, photography), fishing-based livelihoods, and have deep cultural/spiritual significance in India. Chilika Lake: ~1 million visitors/year. Keoladeo: UNESCO World Heritage Site, famous for Siberian crane wintering. India’s Amrit Darohar scheme (2023) directly links community livelihoods to wetland conservation through eco-tourism. ★
F
Food Production & Fisheries
Wetlands are breeding and nursery grounds for most of India’s inland and coastal fisheries. 80% of India’s coastal fish catch depends on mangroves and estuaries as nurseries for juvenile fish. Rice cultivation in India’s paddy wetlands feeds hundreds of millions. Chilika Lake alone supports 200,000 fishermen directly. Wetland plants (lotus, water chestnut, Euryale ferox) are food sources for millions. ★
C
Carbon Sequestration (Climate Regulation)
Peatlands (a type of wetland) store 30% of all land-based carbon in just 3% of land area — more carbon per hectare than tropical forests. Mangroves (blue carbon) store 3–5x more carbon per hectare than tropical rainforests. India’s MISHTI Scheme (2023) targets mangrove restoration partly for this carbon sequestration function. Draining wetlands → massive CO₂ release → climate worsening. ★
🦅
Biodiversity Hotspot
40% of world’s species live or breed in wetlands. Despite covering only 6% of land, they support extraordinary species diversity — birds, amphibians, reptiles, fish, insects, aquatic plants.
India: Keoladeo NP (364 bird species) · Chilika (160+ fish, 150+ bird species) · Loktak (Sangai deer on phumdis)
🌡️
Microclimate Regulation
Wetlands moderate local temperatures through evapotranspiration — cooling surrounding areas in summer. Cities near large water bodies experience cooler, more stable climates. Loss of wetlands → urban heat islands worsen.
Dal Lake moderates Srinagar’s summer temperature · Coastal wetlands reduce heat of coastal cities
🐟
Migratory Bird Habitat
India’s wetlands are critical stopover points on the Central Asian Flyway — one of the world’s major bird migration routes. Millions of migratory birds from Siberia, Central Asia, and Europe winter in Indian wetlands.
Siberian cranes once wintered in Keoladeo · Flamingos in Chilika, Pulicat, Rann of Kutch · Bar-headed geese at Pong Dam, Himachal
💊
Medicinal Resources
Wetland plants have significant medicinal value in traditional Indian medicine. Lotus (Nelumbo nucifera), water lily, aquatic ferns, and many wetland herbs are used in Ayurveda and tribal medicine systems.
Lotus: used in Ayurveda for cooling effects · Brahmi (Bacopa monnieri): wetland plant, used for cognitive enhancement
🔬
Scientific & Research Value
Wetland sediments preserve centuries of environmental history — pollen records, climate proxies, archaeological artifacts. They are natural laboratories for ecology, hydrology, and climate science research.
Himalayan lake sediments reveal past monsoon patterns · Peat bogs preserve organic remains for thousands of years
Nutrient Cycling
Wetlands are among the most productive nutrient cycling zones on Earth — decomposing organic matter, recycling nitrogen and phosphorus, and supporting primary production that feeds entire watersheds.
Ganga floodplain wetlands recycle nutrients from agricultural runoff · Mangrove leaf litter drives coastal food webs
International Framework ★
Ramsar Convention

The world’s oldest environmental treaty — and one of UPSC’s most tested topics in environment.

Convention on Wetlands of International Importance (Ramsar Convention)
Signed: 2 February 1971 · Location: Ramsar, Iran, on the Caspian Sea · In Force: 1975

The Ramsar Convention is an intergovernmental treaty (not a UN agency) providing the framework for national action and international cooperation for the conservation and wise use of wetlands and their resources. It is one of the oldest international environmental agreements.

  • Parties: 172 contracting parties (countries) — nearly universal membership
  • Secretariat: Based in Gland, Switzerland (same location as IUCN headquarters)
  • India became a party: 1 February 1982 ★
  • World Wetlands Day: 2 February every year — anniversary of signing ★
  • Core concept — “Wise Use”: The sustainable use of wetlands for the benefit of humankind in a way compatible with the maintenance of the natural properties of the ecosystem
  • Three pillars: (1) Wise use of all wetlands · (2) Designation and proper management of Ramsar sites · (3) International cooperation

Ramsar List — Designation Criteria

A wetland qualifies for Ramsar listing if it meets any one of the 9 criteria (grouped into two categories):

Group A — Representative, Rare or Unique Wetlands
  • Criterion 1: Contains a representative, rare, or unique natural or near-natural wetland type found within the appropriate biogeographic region
Group B — Wetlands of Importance for Conserving Biological Diversity
  • Criterion 2: Supports vulnerable, endangered, or critically endangered species or threatened ecological communities
  • Criterion 3: Supports populations of plant and/or animal species important for maintaining biological diversity
  • Criterion 4: Supports plant and/or animal species at a critical stage in their life cycles, or provides refuge during adverse conditions
  • Criterion 5: Regularly supports 20,000 or more waterbirds ★
  • Criterion 6: Regularly supports 1% of the individuals in a population of one species or subspecies of waterbird
  • Criterion 7: Supports a significant proportion of indigenous fish subspecies, species, or families
  • Criterion 8: An important source of food for fishes, spawning ground, nursery, or migration path
  • Criterion 9: Regularly supports 1% of the individuals in a population of one species or subspecies of wetland-dependent non-avian animal species ★

Montreux Record ★ — UPSC Direct PYQ

★ Montreux Record — High UPSC Frequency

Montreux Record = a register of Ramsar sites where changes in ecological character have occurred, are occurring, or are likely to occur as a result of technological development, pollution, or other human interference. It is maintained as part of the Ramsar List.

  • Established by Recommendation of the Conference of the Contracting Parties in 1990
  • Sites can be added to or removed from the Record only with the approval of the Contracting Party in which the site is located
  • India’s sites on Montreux Record: Keoladeo National Park (Bharatpur, Rajasthan) — due to reduced water inflow and cessation of buffalo grazing. Loktak Lake (Manipur) — due to the Loktak Hydroelectric Project ★
  • Inclusion in Montreux Record = a SIGNAL for urgent action, NOT a punishment or removal from Ramsar List
⚠ UPSC Trap — Ramsar Convention Statements
  • WRONG: “Under Ramsar Convention, it is MANDATORY on the part of India to protect ALL wetlands in India.” → FALSE ★. The Ramsar Convention only obligates parties to promote wise use of ALL wetlands, and to include at least ONE wetland in the Ramsar List. It does not mandate protection of ALL wetlands.
  • WRONG: “The Wetlands (Conservation and Management) Rules, 2010 were framed BASED ON recommendations of Ramsar Convention.” → FALSE ★. The Rules 2010 were framed by MoEF under the Environment (Protection) Act 1986 — NOT directly based on Ramsar recommendations.
  • CORRECT: “The Wetlands Rules 2010 ENCOMPASS the drainage area or catchment regions of wetlands.” → TRUE ★

Key India Wetland Governance Framework

  • Wetlands (Conservation and Management) Rules, 2010 — notified under Environment (Protection) Act 1986. Amended in 2017. Defines wetlands, prohibits certain activities (reclamation, solid waste dumping, industrial discharge), requires state-level Wetland Authority.
  • National Wetland Conservation Programme (NWCP) — GoI scheme for conservation of identified wetlands. Financial support for management plans, restoration, awareness.
  • Amrit Darohar Scheme (2023) ★ — launched to encourage optimal use of wetlands by involving local communities as custodians. “Amrit Darohar” = precious inheritance. Eco-tourism, livelihood linkages, biodiversity conservation at Ramsar sites.
  • MISHTI Scheme (2023) ★ — Mangrove Initiative for Shoreline Habitats and Tangible Incomes. Coastal wetland (mangrove) restoration combined with community livelihood generation. Budget 2023–24.
  • Wetlands International — an NGO (NOT an intergovernmental organization). Works globally on wetland conservation. NOT under Ramsar Secretariat. ★
India-Specific Knowledge ★
Key Indian Ramsar Sites

India has 75+ Ramsar sites. UPSC tests specific facts about important ones — not the full list. Know these 12 thoroughly.

★ India Ramsar Quick Facts
  • India ratified Ramsar Convention: 1 February 1982
  • First Indian Ramsar sites (both designated 1981): Chilika Lake (Odisha) + Keoladeo Ghana NP (Rajasthan)
  • State with most Ramsar sites: Tamil Nadu (14), followed by Uttar Pradesh (10) ★
  • Largest Ramsar site in India: Sundarbans, West Bengal
  • India has 75+ Ramsar sites as of 2023
WetlandStateYearKey UPSC Facts
Chilika Lake Odisha 1981 ★ First Asia’s largest coastal lagoon. Brackish water. Irrawaddy dolphin, 160+ fish, 150+ bird species including flamingos. 200,000+ fishermen dependent. India’s first Ramsar site. ★
Keoladeo Ghana NP Rajasthan (Bharatpur) 1981 ★ First UNESCO World Heritage Site. Famous for Siberian crane (last seen 2002). 364 bird species. Man-made wetland (built in 1890s for duck hunting). On Montreux Record. ★
Wular Lake J&K 1990 Largest freshwater lake in India ★. Formed by tectonic activity. Seasonal lake (expands monsoon). Critically threatened by encroachment and weed invasion. ★
Harike Wetland Punjab 1990 Largest wetland in northern India. Formed at the confluence of Sutlej and Beas rivers (man-made reservoir behind Harike barrage). Important for migratory waterfowl. ★
Loktak Lake Manipur 1990 Largest freshwater lake in NE India. Only floating national park — Keibul Lamjao NP on phumdis. Sangai deer (brow-antlered, State Animal of Manipur) ★. On Montreux Record. ★
Sambhar Lake Rajasthan 1990 Largest saline lake in India ★. Salt production. Flamingo feeding ground. Located in a desert (Thar) — unique ecosystem. ★
Sundarbans Wetland West Bengal 2001 Largest Ramsar site in India ★. World’s largest mangrove forest. Royal Bengal tiger swims in salt water. UNESCO World Heritage Site. Unique tidally influenced ecosystem. ★
Vembanad–Kol Kerala 2002 Largest wetland system in India (by area). Kuttanad: paddy cultivation below sea level ★. Nehru Trophy Boat Race venue. Kuttanad = “Rice Bowl of Kerala.” ★
Bhoj Wetland Madhya Pradesh (Bhopal) 2002 Two interconnected artificial lakes — Upper Lake (Bada Talab, built by Raja Bhoj ~11th century) and Lower Lake. Largest urban wetland in India. Drinking water source for Bhopal. ★
Kanwar (Kabartal) Lake Bihar (Begusarai) 2020 Asia’s largest oxbow lake ★. Residual oxbow lake formed by Gandak river. First Ramsar site in Bihar. Hosts 60+ migratory species from Central Asia. ★
Tsomoriri Ladakh 2002 High-altitude Ramsar site (~4,522m above sea level). Important breeding site for Black-necked crane ★. Cold desert wetland. Only in Ladakh. ★
Deepor Beel Assam (near Guwahati) 2002 Only Ramsar site in Assam. Elephants use it regularly. Threatened by railway line, urban encroachment, industrial pollution. Critical for Northeast India’s bird diversity. ★
Threats & Pressures
Reasons for Depletion of Wetlands

India has lost over 30% of its wetlands in the past 30 years. Understanding why is critical for policy questions in UPSC Mains.

🏗️
Drainage & Reclamation for Agriculture
The most widespread cause globally and in India. Wetlands drained and converted to farmland — especially for paddy, vegetables, and horticulture. Floodplain wetlands in Bengal, Bihar, and UP converted to agricultural land. Kerala’s Kuttanad: backwaters and wetlands converted to paddy fields over decades → reduced flood buffering → worsened 2018 floods.
India: Floodplains of Ganga-Brahmaputra, Deccan plateau tank wetlands, Kerala backwaters
🏙️
Urbanisation & Infrastructure
Rapid urban expansion fills wetlands with concrete and buildings. Bangalore has lost 90% of its lakes to urban sprawl in 50 years. Chennai lost 90% of its wetlands — contributing to the 2015 floods when the city had nowhere to drain. Mumbai’s Mithi river wetlands destroyed by Dharavi/airport expansion — worsened 2005 floods.
Bangalore: 262 lakes in 1960 → fewer than 40 today · Mumbai: Mithi river wetlands · Chennai: Pallikaranai marsh reduction
🏭
Industrial Pollution
Industrial effluents (heavy metals, organic chemicals, thermal discharge) enter wetlands and alter their chemistry, killing vegetation and wildlife. Paper mills, tanneries, chemical plants near rivers and lakes — a major problem along the Ganga and its tributaries. Kanpur’s leather tanneries have severely degraded Ganga wetlands.
Kanpur tanneries → Ganga pollution · Tirupur dyeing units → Noyyal River wetlands destroyed
🌾
Agricultural Runoff & Eutrophication
Excess nitrogen and phosphorus from fertilizers enter wetlands → algal blooms → oxygen depletion → fish death → vegetation shifts. Dal Lake is severely eutrophied from Srinagar’s sewage and agricultural runoff. Water hyacinth (an invasive plant) thrives in nutrient-rich eutrophied wetlands, choking out native species.
Dal Lake: severe eutrophication · Chilika: periodic algal blooms from catchment agriculture · Vembanad: eutrophication from paddy fields
🌿
Invasive Species
Water hyacinth (Eichhornia crassipes), water lettuce, Salvinia (invasive water fern) form dense mats → block sunlight, reduce oxygen, prevent navigation, clog water intakes. Originally introduced as ornamental plants, they now infest most of India’s freshwater wetlands. Almost impossible to eradicate once established.
Water hyacinth: Dal Lake, Chilika, Kerala backwaters, Loktak Lake · Salvinia: Kerala and NE India wetlands
🏞️
Dams & Water Diversion
Dams reduce seasonal flooding that maintains floodplain wetlands. They reduce sediment and nutrient supply to downstream wetlands. India: Loktak Lake’s water regime altered by Loktak Hydroelectric Project — phumdis degraded. Floodplain wetlands along dammed rivers shrink due to reduced seasonal floods. ★
Loktak: Loktak Hydroelectric Project impact (Montreux Record) ★ · Keoladeo: reduced inflow from Panchana Dam
🎣
Overexploitation of Resources
Overfishing depletes fish populations and disrupts food webs. Excessive extraction of reeds, lotus roots, aquatic vegetation removes wetland habitat and disrupts nutrient cycling. Unsustainable aquaculture (shrimp farming) has destroyed coastal wetlands (mangroves) in Odisha, AP, and Tamil Nadu — converted for shrimp ponds.
Mangrove loss for shrimp aquaculture in Odisha, AP coasts · Overharvesting of Chilika fish stock
🌡️
Climate Change
Sea level rise threatens coastal wetlands (mangroves, salt marshes, estuaries). Changed monsoon patterns alter the hydrology of inland wetlands. Increased drought frequency dries out seasonal wetlands permanently. Warmer water temperatures promote harmful algal blooms. The Sundarbans is losing 1,000+ hectares/year to sea-level rise. ★
Sundarbans: islands disappearing under rising sea ★ · Himalayan wetlands: changing snowmelt patterns
Conservation Pathways
Mitigation of Wetland Destruction

Both regulatory and community-based approaches — UPSC Mains expects both dimensions.

1
Legal Protection — Wetlands Rules 2017 & Designation
Wetlands (Conservation and Management) Rules 2017 (amended from 2010) prohibit reclamation, solid waste dumping, discharge of industrial effluents, and encroachment within wetland boundaries. State Wetland Authorities must be constituted. Every state must prepare a wetland inventory. Critical first step: identify and formally map all wetlands.
2
Ramsar Designation & International Attention
Listing a wetland as a Ramsar site creates national and international commitment to its conservation. While listing does not provide legal protection automatically, it creates political and diplomatic pressure to protect the site. India adding 28 new Ramsar sites in 2022 alone was a significant conservation commitment — though designation must be followed by management action. ★
3
Community Involvement — Amrit Darohar Scheme ★
Launched in 2023, Amrit Darohar involves local Gram Panchayats and fishing communities as primary custodians of India’s Ramsar sites. Key principle: communities that live around wetlands and depend on them are the best long-term protectors. Eco-tourism, sustainable fisheries, and livelihood linkages through wetlands align economic incentives with conservation. ★
4
Removal of Invasive Species
Mechanical removal of water hyacinth (using harvesters or manual labour), biological control (introducing weevils — Neochetina species — that feed on water hyacinth roots), and preventing reintroduction. Kerala and Tamil Nadu have run state-sponsored water hyacinth removal programmes. Removed water hyacinth can be composted or used as biogas feedstock — turning a problem into a resource.
5
Ecological Restoration of Degraded Wetlands
Restoring natural water levels (breaching embankments, diverting water), replanting native aquatic vegetation, reintroducing native fish species, removing pollutant sources. India: Chilika Development Authority has successfully restored the Chilika lagoon — improved fish catch, reduced invasive species, increased dolphin sightings. Case study of successful wetland restoration. ★
6
Pollution Control — Namami Gange & Similar Programmes
Namami Gange Programme (launched 2014, ₹20,000 crore) — includes sewage treatment plants (STPs) on Ganga banks, industrial effluent monitoring, ghat renovation, and riverbank afforestation. Reducing nutrient and pollutant loading in rivers directly benefits downstream wetlands. ★
7
Mangrove Restoration — MISHTI Scheme ★
MISHTI (Mangrove Initiative for Shoreline Habitats and Tangible Incomes) — announced in Union Budget 2023–24. Targets mangrove restoration across coastal states (West Bengal, Odisha, Gujarat, Maharashtra, Goa, Tamil Nadu, Andhra Pradesh, Andaman & Nicobar). Combines restoration with community livelihood through MGNREGS convergence. ★
8
Urban Wetland Conservation — Recognising Ecosystem Services
Cities like Bangalore, Chennai, and Hyderabad are beginning to recognise the economic value of urban wetlands for flood control and groundwater recharge — services that are far cheaper than engineering alternatives. The National Green Tribunal (NGT) has ruled in several cases for restoration of encroached urban lakes. Bengaluru’s Bellandur Lake restoration is an ongoing effort.
📌 Chilika Lake — India’s Most Successful Wetland Restoration ★
  • Problem (1990s): Chilika’s mouth to the sea silted up → reduced salinity → freshwater weeds invaded → fish catch collapsed → 200,000 fishermen in distress
  • Intervention: Chilika Development Authority (CDA) artificially opened a new channel to the sea in 2000 → restored salinity → weeds retreated → fish diversity increased
  • Result: Fish biodiversity improved from ~60 to 160+ species. Irrawaddy dolphin population recovered. Flamingo numbers increased. Fish catch and fishermen’s incomes improved. Chilika removed from Montreux Record in 2002 — only the second site globally to be removed ★
  • Lesson: Targeted, science-based intervention combined with community involvement can reverse wetland degradation. Now cited globally as a model restoration case.
Practice Questions
MCQ Practice Set
MCQ 01 · Easy — Ramsar Basics
Consider the following statements about the Ramsar Convention:
1. It was signed on 2 February 1971 in Ramsar, Iran
2. India became a party to the Ramsar Convention in 1982
3. Under Ramsar Convention, it is mandatory for India to protect all wetlands in its territory
4. World Wetlands Day is observed on 2 February every year
Which of the above statements are correct?
a) 1, 2 and 3 only
b) 1, 2 and 4 only
c) 2, 3 and 4 only
d) 1, 2, 3 and 4
Answer: (b) 1, 2 and 4 only

Statement 1: CORRECT ★ — Ramsar Convention was signed on 2 February 1971 in Ramsar, Iran (on the Caspian Sea). Statement 2: CORRECT ★ — India became a contracting party on 1 February 1982. Statement 3: WRONG ★ — This is a classic UPSC trap. The Ramsar Convention does NOT make it mandatory for India to protect ALL wetlands. Article 4 requires parties to promote conservation of wetlands and establish nature reserves on wetlands — but not mandatory protection of all wetlands. This was directly tested in UPSC. Statement 4: CORRECT ★ — World Wetlands Day is celebrated on 2 February every year — the anniversary of the Convention’s signing.
MCQ 02 · Medium — Montreux Record
The ‘Montreux Record’ maintained under the Ramsar Convention is a register of wetland sites where:
a) New Ramsar sites have recently been added in the current year
b) Changes in ecological character have occurred, are occurring, or are likely to occur due to human interference
c) All wetlands of international importance with exceptional biodiversity value are listed
d) Wetlands that have been removed from the Ramsar List due to degradation are recorded
Answer: (b)

The Montreux Record is a sub-register within the Ramsar List — it specifically identifies sites that are facing ecological problems due to human interference (technological development, pollution, or other human activities). It is a red-flag system — sites on the Record need urgent attention. Key India points: Keoladeo NP (reduced water inflow) and Loktak Lake (Loktak Hydroelectric Project impact) are on the Montreux Record. Chilika Lake was on the Record but was successfully removed in 2002 after restoration — only the second Ramsar site globally to be removed from the Record. A site can only be added to or removed from the Record with the approval of the Contracting Party where it is located.
MCQ 03 · Medium — Wetland Functions
“If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys.” Which one of the following functions of wetlands best reflects this statement?
(UPSC Prelims 2022)
a) The water cycle in wetlands involves surface runoff, subsoil percolation and evaporation
b) Algae form the nutrient base upon which fish, crustaceans, molluscs, birds, reptiles and mammals thrive
c) Wetlands play a vital role in maintaining sedimentation balance and soil stabilization
d) Aquatic plants absorb heavy metals and excess nutrients
Official Answer: (d) — UPSC Prelims 2022

The kidney analogy refers specifically to filtration and purification. Kidneys filter blood — removing toxins, heavy metals, excess minerals, and waste. Wetland aquatic plants (macrophytes like reeds, cattails, and submerged plants) absorb heavy metals (lead, mercury, cadmium) and excess nutrients (nitrates, phosphates) from water passing through — purifying it before it flows downstream. This is the “kidneys of the Earth” function. Options (a), (c) describe water regulation functions. Option (b) describes the food web/biodiversity function. Only option (d) captures the purification/filtration function that matches the kidney analogy.
MCQ 04 · Hard — Ramsar Sites Match
Consider the following pairs (Wetland / Lake : State/Location):
1. Loktak Lake : Assam
2. Wular Lake : Jammu & Kashmir
3. Kanwar (Kabartal) Lake : Bihar
4. Sambhar Lake : Gujarat
Which of the pairs given above are correctly matched?
a) 1 and 2 only
b) 2 and 3 only
c) 1, 3 and 4 only
d) 2, 3 and 4 only
Answer: (b) 2 and 3 only

Pair 1: WRONG — Loktak Lake is in Manipur, NOT Assam. It is the largest freshwater lake in Northeast India, known for floating phumdis and Keibul Lamjao NP. Deepor Beel is Assam’s Ramsar site. Pair 2: CORRECT ★ — Wular Lake is in Jammu & Kashmir (now UT of J&K). Largest freshwater lake in India. Located in the Kashmir Valley. Pair 3: CORRECT ★ — Kanwar (Kabartal) Lake is in Begusarai district, Bihar. Asia’s largest oxbow lake. First Ramsar site in Bihar (2020). Pair 4: WRONG — Sambhar Lake is in Rajasthan (near Jaipur), NOT Gujarat. Largest saline lake in India. Gujarat’s important water bodies include the Rann of Kutch and various coastal wetlands.
MCQ 05 · Medium — Amrit Darohar
The ‘Amrit Darohar’ scheme, launched in 2023, is related to:
a) Conservation of mangroves along India’s coastline
b) Involving local communities as custodians of India’s Ramsar wetland sites
c) Setting up of artificial wetlands in urban areas for stormwater management
d) Scientific monitoring of glacial lakes in the Himalayan region
Answer: (b)

Amrit Darohar (meaning “precious inheritance”) was launched in 2023 to encourage the optimal use of India’s Ramsar wetland sites by involving local communities as primary custodians. The scheme aims to: (1) Designate local communities as wetland custodians, (2) Develop eco-tourism at Ramsar sites, (3) Link community livelihoods to wetland conservation, (4) Restore degraded wetland areas. Option (a) describes the MISHTI Scheme (also launched 2023) — which is specifically about mangroves. These two schemes (MISHTI for mangroves + Amrit Darohar for inland wetlands/Ramsar sites) were both announced in Union Budget 2023–24 and are frequently confused in UPSC questions.
MCQ 06 · Medium — First Ramsar Sites
Which of the following was/were among India’s first Ramsar sites designated in 1981?
1. Chilika Lake
2. Keoladeo Ghana National Park
3. Loktak Lake
4. Sundarbans
a) 1 only
b) 1 and 2 only
c) 1, 2 and 3
d) 1, 2, 3 and 4
Answer: (b) 1 and 2 only

India’s first two Ramsar sites were both designated in 1981: Chilika Lake (Odisha) and Keoladeo Ghana National Park (Bharatpur, Rajasthan). Loktak Lake (Manipur) was designated in 1990. Sundarbans Wetland was designated in 2001. The year 1981 matters because India became a Ramsar contracting party on 1 February 1982 — but the sites were designated retroactively from 1981 (when India was in the process of accession). ★
UPSC Previous Year Questions
PYQ Analysis — Wetlands
UPSC Prelims 2022
PYQ 01 · Wetlands as Kidneys
“If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys.” Which one of the following functions of wetlands best reflects the above statement?
(a) Water cycle in wetlands involves surface runoff, subsoil percolation and evaporation (b) Algae form the nutrient base (c) Wetlands maintain sedimentation balance and soil stabilization (d) Aquatic plants absorb heavy metals and excess nutrients
Official Answer: (d)

The kidney analogy maps to filtration and purification. Wetland aquatic plants absorb heavy metals (cadmium, lead, mercury from industrial effluents) and excess nutrients (nitrates, phosphates from agricultural runoff) from passing water — purifying it naturally. This mirrors the kidney’s role of filtering toxins and excess substances from blood. Note: all four options describe real wetland functions — the question asks which best matches the kidney analogy specifically. Options a, c = hydrological regulation. Option b = biodiversity/food web. Only d = purification/filtration = kidney function. ★
UPSC Prelims 2014
PYQ 02 · Montreux Record
If a wetland of international importance is brought under the ‘Montreux Record’, what does it imply?
(a) Changes in ecological character of the wetland have occurred, are occurring, or are likely to occur (b) It is no longer a Ramsar site and its status has been revoked (c) The government must immediately stop all human activities in the wetland (d) It has been inscribed as a UNESCO World Heritage Site
Official Answer: (a) — UPSC Prelims 2014

The Montreux Record specifically flags sites where ecological character has changed (or is threatened to change) due to human interference. It does NOT mean: removal from Ramsar List (b — wrong), halt all activities (c — too extreme), or UNESCO designation (d — completely different). Being in the Montreux Record is an early warning system — a call to action. Chilika Lake was in the Record (1993–2002) and was successfully removed after restoration. India’s current Montreux Record sites: Keoladeo NP and Loktak Lake.
UPSC Prelims — Pattern
PYQ 03 · Ramsar Convention Statements
Consider the following statements:
1. Under Ramsar Convention, it is mandatory on the part of the Government of India to protect and conserve all the wetlands in the territory of India.
2. The Wetlands (Conservation and Management) Rules, 2010 were framed by the Government of India based on the recommendations of Ramsar Convention.
3. The Wetlands (Conservation and Management) Rules, 2010 also encompass the drainage area or catchment regions of the wetlands as determined by the authority.
Which of the statements given above is/are correct?
a) 1 and 2 only
b) 2 and 3 only
c) 3 only
d) 1, 2 and 3
Official Answer: (c) 3 only

Statement 1: WRONG ★ — Ramsar Convention is NOT mandatory for protecting ALL wetlands in India. It obligates India to promote conservation and list at least one site. Full mandatory protection of all wetlands is NOT required. Statement 2: WRONG ★ — Wetlands Rules 2010 were framed under the Environment (Protection) Act 1986 by MoEF — NOT based on Ramsar Convention recommendations. The Ramsar Convention influenced thinking but is not the legal basis for the Rules. Statement 3: CORRECT ★ — The Wetlands Rules 2010 define “wetland” to include the drainage area or catchment region of the wetlands as determined by the authority — a broader definition that covers watershed areas around wetlands. This is directly stated in the Rules’ definition.
Frequently Asked Questions
FAQs — Wetlands
What is the difference between Ramsar Convention and Wetlands International?
This is a classic UPSC confusion — the two sound related but are completely different types of organisations.

Ramsar Convention = An intergovernmental treaty (like a UN treaty) that countries sign. It has 172 member countries (contracting parties). Managed by a Secretariat in Gland, Switzerland. Creates legally binding obligations (soft-law) for member countries. The Ramsar List, Montreux Record, and Conference of Contracting Parties (COP) are all Ramsar mechanisms. Countries join the Ramsar Convention; it is an international legal framework.

Wetlands International = An independent NON-governmental organisation (NGO). NOT part of the Ramsar Secretariat. NOT an intergovernmental body. Works at the field level to develop knowledge and advocate for better policies. Has offices across the world. Does scientific research, capacity building, and advocacy for wetland conservation. India has a Wetlands International South Asia office.

UPSC Trap: Questions sometimes describe Wetlands International as “formed by countries which are signatories to Ramsar Convention” — this is WRONG. It is an independent NGO.
Why is Chilika Lake called a coastal lagoon and not a lake? What is the difference?
Chilika Lake is technically a coastal lagoon — the largest in Asia — not an inland lake. The distinction matters for UPSC.

A lake is a body of water completely surrounded by land — it has no direct connection to the sea. Its salinity is determined by local geology and rainfall. Examples: Wular Lake (freshwater), Sambhar Lake (saline).

A coastal lagoon is a shallow body of water separated from the ocean by a narrow barrier (sandspit, reef, or barrier island) with a channel connecting it to the sea. It receives both fresh water from rivers and salt water from the ocean — hence it is brackish. The salinity fluctuates seasonally with rainfall and tidal influence.

Chilika fits the lagoon definition: it receives freshwater from rivers (Daya, Bhargavi, Makara) and saltwater from the Bay of Bengal through a narrow channel. Its salinity varies from 0.2–32 ppt seasonally — brackish. The famous management intervention in 2000 (opening a new sea channel) was specifically to improve this brackish connection and restore salinity.

Key UPSC fact: Chilika Lake = Asia’s largest coastal lagoon = BRACKISH (not freshwater, not saline). Students often confuse it with a freshwater lake.
What is “wise use” of wetlands under the Ramsar Convention?
“Wise use” is the central concept of the Ramsar Convention — arguably its most important contribution to conservation philosophy.

Definition: “The maintenance of the ecological character of wetlands, achieved through the implementation of ecosystem approaches, within the context of sustainable development.”

In simpler terms: Wise use means using wetland resources sustainably — in a way that the ecological functions are maintained for future generations — while also supporting human livelihoods and development needs. It is NOT about zero use or fortress conservation.

Key elements:
1. Conservation: Maintain the natural character and functions of wetlands
2. Sustainable use: Allow human use that doesn’t compromise ecological integrity
3. Economic benefits: Fisheries, tourism, water supply, flood control
4. Cultural values: Respect traditional and spiritual relationships communities have with wetlands

Practical implications for India: Keoladeo NP’s traditional buffalo grazing was actually beneficial for wetland ecology (buffalo grazing controlled vegetation). When grazing was stopped (in the name of conservation), habitat quality declined — an example of “wise use” concept being missed. Traditional fishing communities in Chilika are considered better custodians than external agencies — the Amrit Darohar scheme embodies this wise use philosophy.
Why are peatlands considered more important for carbon storage than tropical forests?
Peatlands are a type of wetland where dead plant matter (mainly mosses, particularly Sphagnum moss) accumulates FASTER than it decomposes — because the waterlogged, oxygen-poor conditions slow decomposition dramatically. Over thousands of years, this creates thick layers of compressed organic matter called “peat.” One metre of peat takes approximately 1,000 years to accumulate.

The carbon math:
— Tropical forests store approximately 200–300 tonnes of carbon per hectare (above and below ground combined)
— Peatlands store 500–2,000+ tonnes of carbon per hectare (locked in the peat layer)
— Though peatlands cover only 3% of Earth’s land surface, they store approximately 30% of all terrestrial carbon — more than all the world’s forests combined

The release risk: When peatlands are drained (for agriculture, development) or burned, this ancient carbon oxidises rapidly and is released as CO₂ and CH₄. Indonesia’s peatland fires release enormous amounts of greenhouse gases annually — far more than comparable forest fires.

India’s peatlands: India has high-altitude peat bogs in Kashmir, Himachal Pradesh, and Uttarakhand. Relatively small by global standards but important locally for water storage and carbon.

Blue carbon: Mangroves and coastal wetlands are sometimes called “blue carbon” ecosystems — they sequester carbon in their vegetation AND in the waterlogged sediments below, similar to peat formation. This is why MISHTI scheme (mangrove restoration) is also a climate policy.
What is the difference between MISHTI and Amrit Darohar schemes? Both launched in 2023.
Both schemes were announced in the Union Budget 2023–24 and are related to wetland conservation — but they target different ecosystems and use different approaches.

MISHTI (Mangrove Initiative for Shoreline Habitats and Tangible Incomes) ★
— Target: COASTAL wetlands — specifically mangrove ecosystems
— Focus states: West Bengal, Odisha, Andhra Pradesh, Tamil Nadu, Kerala, Goa, Maharashtra, Gujarat, Andaman & Nicobar Islands (all coastal states)
— Mechanism: Mangrove plantation and restoration using MGNREGS convergence (provides employment while creating green cover)
— Objectives: Shoreline protection (from storms, erosion), blue carbon sequestration, fisheries support, community livelihoods (honey, aquaculture, eco-tourism in mangrove areas)

Amrit Darohar (Precious Inheritance) ★
— Target: ALL of India’s Ramsar wetland sites (inland + coastal)
— Focus: Community involvement and livelihood linkages at Ramsar sites
— Mechanism: Gram Panchayats and local communities designated as custodians (“amrit darohar”) of their nearby wetland
— Objectives: Eco-tourism development, sustainable fisheries, awareness, biodiversity conservation, livelihood generation directly from wetland services

Simple distinction: MISHTI = plant and restore mangroves (action-focused). Amrit Darohar = involve communities in caring for existing Ramsar sites (governance-focused). A mangrove Ramsar site could theoretically benefit from BOTH simultaneously.
Legacy IAS · Bangalore

Importance of Wetlands · UPSC CSE 2026 · GS Paper III · Environment & Ecology Notes

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