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Mangroves have complex root systems that interact with tides and flowing water. Their roots can slow water movement and trap sediments carried through coastal environments.
Over time, this can contribute to the formation and stabilization of muddy coastal areas. Mangrove forests also provide habitat for many marine and terrestrial organisms.
Their value therefore isn't limited to the trees themselves—the physical structure of the entire root network changes the surrounding environment.
A mangrove forest is partly an ecosystem and partly a natural sediment-trapping system.
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