MANGROVE FORESTS

PRERNA FOR IAS

         Mehnat Aapki, Guidance Humari

         Roz ki Prelims Practice — Experts ke Saath

MANGROVE FORESTS

1. Mangrove Forests – Introduction

Mangrove forests are unique coastal ecosystems found in tropical and subtropical regions where land meets the sea. They grow in saline or brackish water, mainly in intertidal zones that are regularly flooded by tides. Mangroves consist of salt-tolerant trees and shrubs with specialized aerial roots that help them survive in waterlogged soils. These forests are among the world's most productive ecosystems and support rich biodiversity. They provide habitat for numerous marine and terrestrial species while protecting coastlines from erosion and storms. Mangrove forests also store large amounts of carbon, making them highly important for climate change mitigation and sustainable coastal development.

2. Coastal Protection

Mangrove forests act as natural barriers that protect coastlines from erosion, cyclones, storm surges, tsunamis, and strong waves. Their dense network of roots slows down water flow, absorbs wave energy, and stabilizes coastal soils. This reduces shoreline erosion and minimizes damage to nearby human settlements. During the 2004 Indian Ocean tsunami, coastal regions protected by healthy mangrove forests suffered significantly less destruction than deforested areas. Mangroves also trap sediments, helping coastlines grow naturally and reducing the effects of sea-level rise. Because of these protective functions, mangrove forests are considered one of nature's most effective coastal defence systems.

3. Biodiversity Hotspots

Mangrove forests are biodiversity hotspots that support a wide variety of plants, animals, and microorganisms. They serve as breeding and nursery grounds for nearly 75% of commercially important fish species during some stage of their life cycle. Mangroves also provide nesting, feeding, and shelter for numerous birds, reptiles, amphibians, and mammals. Species such as mudskippers, fiddler crabs, crocodiles, sea turtles, kingfishers, herons, and the Royal Bengal Tiger in the Sundarbans depend on mangrove habitats. These ecosystems also host algae, fungi, and microorganisms that form the foundation of marine food chains and maintain ecological balance.

4. Climate Change Mitigation (Blue Carbon)

Mangrove forests are among the most efficient natural carbon sinks and are known for storing "Blue Carbon." They capture atmospheric carbon dioxide through photosynthesis and store it in their biomass, roots, and deep coastal sediments. Mangroves can store three to five times more carbon per unit area than tropical rainforests. The stored carbon remains trapped for thousands of years if the ecosystem remains undisturbed. However, destruction of mangrove forests releases large amounts of carbon into the atmosphere, contributing to climate change. Conserving and restoring mangroves is therefore an effective strategy for reducing greenhouse gas emissions and combating global warming.

5. Support for Human Livelihoods