MINDMAPS FOR UPSCPET 2026 · VISUAL REVISION
Mangroves: tides, roots and coastal life
Trace how tidal mudflats, specialised roots and detritus sustain deltaic coasts
Tidal mangrove ecosystem cycle
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1 · Tides and waterlogged soil
- Mangroves occupy coastal intertidal habitats.
- Tides move water, sediment and nutrients through the habitat.
- Salinity and low-oxygen soils create different challenges from dry land.
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2 · Roots modify the habitat
- Some species have breathing roots; others have prop or stilt roots.
- Root systems can slow currents and trap sediment.
- Adaptations vary by species; not every mangrove has every root form.
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3 · Litter supports food webs
- Microbes break down fallen leaves into detrital material.
- Detritus supports invertebrates and wider coastal food webs.
- Sheltered roots provide feeding and nursery habitat for many aquatic species.
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4 · Regeneration and protection
- Propagules or seedlings establish where water, sediment and other conditions suit them.
- New growth renews the habitat; healthy belts can reduce erosion and wave energy.
- The Sundarbans lies in the Ganga–Brahmaputra–Meghna delta across India and Bangladesh.
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