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21 May

International Day for the Conservation of the Mangrove Ecosystem – 26 July

Introduction

The International Day for the Conservation of the Mangrove Ecosystem is observed every year on 26 July to raise global awareness about the ecological, climatic, and socio-economic importance of mangroves. The day was proclaimed by UNESCO in 2015 during its 38th Session, and the first observance took place in 2016.The observance highlights the urgent need to conserve mangrove ecosystems, which are disappearing at a rate three to five times faster than overall global forest losses. Current estimates indicate that nearly 50% of global mangrove cover has disappeared over the last few decades.


What are Mangroves?

Mangroves are salt-tolerant trees and shrubs that grow in tropical and subtropical intertidal coastal zones, mainly between land and sea. These ecosystems survive in low-oxygen, saline, and waterlogged soils, making them highly specialized coastal vegetation systems.Mangroves are often called:

  • “Lungs of the Coast”
  • “Coastal Kidneys”

because they regulate coastal ecological balance and improve coastal resilience.


Ecological Importance of Mangroves

Mangroves are among the most productive ecosystems in the world and perform multiple ecological functions.

Coastal Protection

Mangroves act as natural bio-shields against:

  • Cyclones
  • Storm surges
  • Tsunamis
  • Coastal erosion
  • Flooding

Their dense root systems absorb wave energy and stabilize coastlines. Studies indicate that mangroves can reduce wave height by 50–99% over 500 metres.


Carbon Sequestration and Blue Carbon

Mangroves are major Blue Carbon Ecosystems.They:

  • Store carbon in roots and soils
  • Sequester carbon at rates higher than terrestrial forests
  • Store nearly 3–4 times more carbon per hectare than tropical forests

Globally, mangroves are estimated to store nearly 11 billion tonnes of carbon dioxide.Although they cover only 0.7% of tropical forests, they contribute nearly 10–11% of terrestrial carbon input into oceans.


Biodiversity Hotspots

Mangrove ecosystems support:

  • Fish
  • Crustaceans
  • Birds
  • Crocodiles
  • Reptiles
  • Tigers
  • Monkeys
  • Migratory species

They function as:

  • Nursery grounds for fisheries
  • Breeding habitats for marine organisms
  • Critical feeding grounds for coastal biodiversity

Livelihood and Food Security

Mangroves support coastal communities through:

  • Fisheries
  • Tourism
  • Forest products
  • Grazing support
  • Medicinal plants

They also improve water quality by trapping sediments and filtering pollutants.


Global Status of Mangroves

Global Coverage

According to the Food and Agriculture Organization of the United Nations report “The World’s Mangroves 2000–2020”, the total global mangrove area in 2020 was approximately 14.8 million hectares.Nearly 44% of the world’s mangroves are concentrated in:

  • South Asia
  • Southeast Asia

Major mangrove-holding countries include:

  • Indonesia
  • Brazil
  • Nigeria
  • Mexico
  • Australia

Together, these countries contain nearly 47% of global mangrove cover.


Declining Trends

Despite conservation measures, mangroves continue to decline due to:

  • Aquaculture expansion
  • Urbanisation
  • Deforestation
  • Coastal infrastructure
  • Pollution
  • Climate change

The annual rate of mangrove loss declined from:

  • 0.12% (2000–2010)
    to
  • 0.07% (2010–2020)

showing some improvement due to conservation interventions.


Major Threats to Mangroves

Climate Change

Climate change poses a major threat through:

  • Rising sea levels
  • Increased seawater temperatures
  • Frequent cyclones
  • Altered freshwater flows

The International Union for Conservation of Nature warns that nearly 50% of mangrove ecosystems may collapse by 2050 without urgent action.


Human Activities

Human-induced threats include:

  • Desalination activities
  • Fuelwood extraction
  • Grazing
  • Dams
  • Agriculture
  • Aquaculture
  • Coastal infrastructure
  • Cement industries
  • Urban expansion

UNESCO and Global Conservation Efforts

UNESCO’s Role

UNESCO promotes mangrove conservation through:

  • Biosphere Reserves
  • World Heritage Sites
  • UNESCO Global Geoparks

UNESCO also works on restoration of:

  • Mangroves
  • Seagrasses
  • Tidal marshes

as part of global Blue Carbon Ecosystem Conservation.


MangRes Project (2022–2025)

The MangRes Project supports mangrove restoration in:

  • Latin America
  • Caribbean Biosphere Reserves

It focuses on:

  • Restoration
  • Community participation
  • Control of invasive species
  • Sustainable livelihoods

International Initiatives

Global Mangrove Alliance (2018)

The Global Mangrove Alliance (GMA) is a coalition of:

  • Governments
  • NGOs
  • Scientists
  • Industry groups

Objectives

  • Halt mangrove loss by 2030
  • Restore 50% of lost mangroves
  • Double mangrove protection globally

Mangrove Breakthrough Initiative

Targets by 2030:

  • Protect 15 million hectares
  • Mobilize nearly USD 4 billion

UN Decade on Ecosystem Restoration (2021–2030)

Mangrove restoration is a key component of the UN Decade on Ecosystem Restoration, focusing on:

  • Biodiversity conservation
  • Climate mitigation
  • Nature-based solutions
  • Coastal resilience

Mangrove Conservation in Gulf Countries

Oman

Oman Blue Carbon Project

Oman launched an ambitious project to plant:

  • 100 million mangrove trees

Expected outcomes:

  • Reduction of 14 million tonnes of CO₂
  • Generation of nearly USD 150 million in blue carbon credits

The programme supports Oman’s Net Zero 2050 strategy.


Saudi Arabia

Under the Saudi Green Initiative (2021), Saudi Arabia aims to:

  • Plant 10 billion mangrove trees by 2030

Major initiatives include:

  • Red Sea Global Project
  • Yanbu restoration
  • Saudi Aramco mangrove plantations
  • Tarout Bay Mangrove Park

Mangroves along the Red Sea and Arabian Gulf:

  • Filter pollutants
  • Absorb heavy metals
  • Protect coastlines
  • Support fisheries and camel grazing

Bahrain

Bahrain aims to plant:

  • 3.6 million trees by 2035

Key restoration activities are taking place in:

  • Tubli Bay
  • Ras Sanad

with support from:

  • UN-Habitat
  • HSBC

Egypt

Mangrove Ecosystem Restoration in Egypt (MERS)

Launched in 2021, the MERS project focuses on:

  • Red Sea coast restoration
  • Community participation
  • Ecotourism
  • Climate resilience

It plans to plant:

  • 10,000 mangrove seedlings annually

United Arab Emirates

The UAE launched:

  • Mangrove Alliance for Climate (MAC) during COP27 (2022)

Objectives

  • Climate mitigation
  • Biodiversity conservation
  • Mangrove restoration
  • International cooperation

Members

  • UAE
  • Indonesia
  • India
  • Sri Lanka
  • Australia
  • Spain
  • Japan

The UAE is also implementing large-scale marine restoration in Abu Dhabi involving:

  • Mangroves
  • Seagrass beds
  • Coral reefs

Mangroves in India

Mangrove Cover in India

According to the India State of Forest Report 2023, India’s mangrove cover is:

  • 4,991.68 sq km
  • Nearly 0.15% of India’s geographical area

State-wise

State/UTStatus
West BengalLargest mangrove cover
PuducherrySmallest mangrove cover

Important Mangrove Regions in India

Sundarbans

  • World’s largest contiguous mangrove forest
  • UNESCO World Heritage Site
  • Inscribed in 1987

Bhitarkanika National Park

  • India’s second-largest mangrove ecosystem

Other Important Regions

  • Pichavaram Mangrove Forest
  • Godavari–Krishna Delta
  • Gujarat coast
  • Andaman & Nicobar Islands

Government Initiatives in India

MISHTI Scheme (2023)

The Government of India launched:

Mangrove Initiative for Shoreline Habitats & Tangible Incomes (MISHTI)

Objectives

  • Restore nearly 540 sq km of mangroves
  • Enhance shoreline protection
  • Improve climate resilience
  • Generate community livelihoods

Timeline

  • 2023–2028

Technology-based Monitoring

India is increasingly using:

  • Drones
  • Artificial Intelligence
  • Surveillance systems

to detect:

  • Illegal encroachment
  • Deforestation
  • Coastal degradation

Importance of Community Participation

Experts emphasize that mangrove conservation requires:

  • Local community participation
  • Youth engagement
  • Environmental education
  • Capacity building
  • Green jobs
  • Sustainable tourism

Community-driven restoration improves:

  • Fisheries
  • Coastal livelihoods
  • Ecological resilience

Conclusion

Mangroves are among the most critical ecosystems for ensuring coastal protection, biodiversity conservation, climate mitigation, and livelihood security. Their role as powerful blue carbon sinks makes them indispensable in combating climate change and sea-level rise.Despite increasing international and national conservation efforts, mangroves continue to face severe pressure from climate change and human activities. Long-term protection requires a combination of:

  • Scientific restoration
  • Policy intervention
  • Community participation
  • Sustainable coastal development
  • International cooperation

The observance of the International Day for the Conservation of the Mangrove Ecosystem serves as a reminder that protecting mangroves is essential for ensuring ecological stability and sustainable development for future generations.


Updated – 21 May 2026 ; 11:59 PM |UNESCO, FAO

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