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Because not only are they endangered compared to a lot of other semi tropical/tropical flora, but they're a vital part of the prevention of beach erosion. The roots hold the soil/sand in place along beach shores.

A while back, it was not thought that they were important, because a Plant native to Brazil call the "Brazilian pepper tree" was almost the same thing and could grow along shorelines of salt water also, but in recent years it has been discovered that Brazilian pepper is a nuisance. Not only is it poisonous, but its destructive and illegal to plant now because of it.

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14y ago
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13y ago

Because it protects and stabilizes of lowlying coastal lands and its importance in estuarine and coastal fishery food chains.

Mangrove forests protect uplands from storm winds, waves, and floods. The amount of protection afforded by mangroves depends upon the width of the forest.

Mangroves can help prevent erosion by stabilizing shorelines with their specialized root systems.

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12y ago

Why wouldn't they be? All trees are necessary unless they've been introduced to that environment by man and are causing other plant or animal life to die off -- in that case cut the suckers down.

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Q: Why are the mangroves important?
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