Mangroves Conservation

Posted 22 Jun 2024

Updated 24 Jun 2024

5 min read

Why in the News?

Recently, the IUCN Red List of Mangroves Ecosystems has indicated that about 50% of the ecosystems examined were classified as vulnerable, endangered, or critically endangered.

An infographic titled "Data Bank" highlights the consequences of inaction on mangrove conservation by 2050. Key impacts include a 5% global loss of mangroves, 16% submerged due to sea level rise, 1.8 billion tonnes of carbon sink loss, $13 billion in monetary losses, and 2.1 million people at risk from coastal flooding.

More on the news

IUCN Red List of Mangroves Ecosystems assessed 36 regions across 44 countries with experts from organizations like the Global Mangrove Alliance.
- It is one of the headline indicators for the Kunming-Montreal Global Biodiversity Framework under the Convention on Biological Diversity (CBD).
The mangrove ecosystems of south India, Sri Lanka, the Maldives and Northwest Atlantic were identified as critically endangered.
It showed that nearly 20% of the assessed mangroves are at high risk and have been marked as endangered or critically endangered, indicating a severe risk of collapse.
Nearly 33 per cent of the mangrove systems on the planet are threatened by the impacts of climate change.

About Mangroves and Ecosystem services provided by them

Mangrove ecosystems cover an area of 150,000 sq km, primarily on tropical, subtropical, and warm temperate coasts around the world, covering approximately 15 per cent of the world’s coastlines.

Carbon sequestration: Mangrove ecosystems sequester approximately 11 billion tonnes of carbon, which is almost three times the amount stored by tropical forests of the same size.
Protection from coastal calamities: Healthy mangroves can combat sea level rise while also providing inland protection from extreme weather events.
Biodiversity conservation: Mangroves support a huge variety of plants and animals.

Of the over 1,500 species of fauna that depend on mangroves for their survival, 15% are threatened with extinction.

Do you know?" graphic with two bullets: 1. More than 20 percent of the world’s mangrove population in tropical coastal regions has been lost since the 1980s. 2. The habitats of these salt-tolerant plants are disappearing three to five times faster than tropical rainforests or coral reefs.

Threats to the mangrove ecosystem:

Climate change: Increased frequency of severe storms and sea-level rise places mangroves at risk of extinction.
Development-related activities: Deforestation for developmental activities like dam construction and urban development alters freshwater and sediment fluxes and damage the mangrove ecosystems.
Pollution: Contaminants from sewage, runoff, industrial effluent, intertidal zone fishing, marine and coastal tourism, urban runoff, and marine industries impact mangrove ecosystems.
- Endocrine disruption of fauna, reduced reproduction rates, feminization of male fish, and toxic effects on human populations consuming marine produce are some of the impacts of pollution on the mangrove ecosystems.
Unsustainable fishing: Lack of sustainable methods of fishing especially, shrimp farming impacts the resilience of the mangroves.

Initiatives for Mangrove Conservation:

India State of Forest Report (ISFR)2023 by the Forest Survey of India (FSI): Mangrove cover in India has increased by 17 sq km (0.34%) as compared to the previous assessment.
MISHTI (Mangrove Initiative for Shoreline Habitats & Tangible Incomes): It is a government-led initiative under the Ministry of Environment, Forest and Climate Change (MOEF & CC) aimed at increasing the mangrove cover along the coastline and on saltpan lands.
- It provides financial assistance to local communities to undertake mangrove plantations.
- Conducting awareness campaigns to educate people about the importance of mangroves and their role in protecting the environment.
Sustainable Aquaculture In Mangrove Ecosystem (SAIME) initiative: Building aquaculture farms that use sustainable IMA (integrated mangrove aquaculture) systems.
Magical Mangroves campaign: WWF India has enjoined citizens in nine coastal states on mangrove conservation.
National Coastal Mission Programme on ‘Conservation and Management of Mangroves and Coral Reefs’: Preparation of an annual Management Action Plan (MAP) for Mangroves conservation & management.

Multilateral Cooperation: Mangrove Breakthrough

Launched at UNFCCC COP27 in Sharm el-Sheikh, Egypt, by the United Nations High Level Climate Champions and the Global Mangrove Alliance.
It provides a framework for all stakeholders to work together towards a target of securing the future of over 15 million hectares of mangroves globally by 2030, underpinned by $4bn of sustainable finance.
Collective action will focus on:
- Halting mangrove loss.
- Restoring half of recent losses.
- Doubling the protection of mangroves globally.
- Ensuring sustainable long-term finance for all existing mangroves.

Way Forward

Legal and policy measures: Strengthening of existing laws like the Indian Forest Act,1927, Environmental Impact Assessment (EIA),1986 and Forest Conservation Act,1980.
Ecological conservation:
- Mangrove restoration by identifying regions suitable for restoration for planting mangroves.
- Establishment of green belts and buffer zones in and around the fringes of mangrove forests to maintain the ecological integrity of the core area.
- Regulation of wetland soil elevation by construction of barriers on rivers carrying sediments to conserve the mangrove habitat.
- Connecting the mangrove forest with the terrestrial forest to improve conservation efforts. E.g., Sundarban mangroves connected to the Sundarban National Park.

Research and development: Core research and data collection about the variety of mangroves at national, sub-national or other lower scales for localized custom solutions.
- Important mangrove patches can be declared as ‘Mangrove Germplasm Preservation Centres’ for their better management and conservation.
International cooperation: In line with the UN Decade for Ecosystem Restoration 2021-2030, a global political will, scientific approach, and financial resources need to be streamlined towards marine ecosystems with mangrove ecosystems in focus.