Mangrove

A mangrove is a shrub or tree that grows mainly in coastal saline or brackish water. They live in warm, equatorial places, usually along coastlines and tidal rivers. Mangroves have special ways to get oxygen and deal with salty water. This helps them survive where most plants cannot. Because of these skills, mangroves are found all around the world in tropical and subtropical areas, especially near the equator.

These trees and shrubs have strong root systems. They can filter salt from water, letting them live in tough coastal places where the water is often filled with mud and has very little oxygen. Mangrove areas, called mangrove forests or mangal, are important habitats. They help protect coastlines. They can reduce the power of big waves and storms like tsunamis. They also help keep the Earth healthy by storing carbon.

People have been studying mangroves more with new technologies. They know how much of these forests exists and how they are changing over time. Sadly, mangroves are sometimes cut down. This harms both the plants and the animals that depend on them. Because of this, many people are working on projects to mangrove restoration to help these important ecosystems grow again. Every year on July 26, the world celebrates the International Day for the Conservation of the Mangrove Ecosystem to remind everyone how valuable these forests are.

Etymology

The word "mangrove" has an interesting history, but we don't know exactly where it came from. It might have come from Portuguese or Spanish words, or even older languages from South America. Sometimes, people use "mangrove" to describe the area where these special plants grow, or just the big trees and shrubs there.

Biology

Mangroves are special trees and shrubs that grow in coastal areas with salty or brackish water. There are about 70 species of true mangroves, found mainly in warm, equatorial climates. They have unique ways to survive in tough places, like salty water and wet soil.

Mangroves have clever tricks to get oxygen and handle salt. For example, the red mangrove uses stilt roots to stay above water and take in air through special bark openings. The black mangrove has tiny "breathing tubes" that rise out of the mud to get oxygen. They also control how much salt they take in and how much water they lose, which helps them stay healthy even in hard places. Their seeds often grow while still on the tree, forming structures that can float and travel far before they take root somewhere new.

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Taxonomy and evolution

Mangroves are special trees and shrubs that grow in coastal areas with salty or brackish water. They are found in many parts of the world, especially in the Eastern Hemisphere, where there are more mangrove species than in the New World. Scientists believe that mangroves evolved from land plants that learned to live in salty water. Their variety has grown slowly over time, with the first mangroves appearing as early as the Pennsylvanian period. Mangroves might even be older because life first began in the oceans.

Species distribution

See also: Mangrove tree distribution

Mangroves are tropical plants that also grow in some warm areas, like South Florida, southern Japan, South Africa, New Zealand, and Victoria in Australia. These faraway places have mangroves because of long coastlines, island chains, or seeds carried by warm ocean currents from places with more mangroves. In areas farthest from the equator, mangroves often look like low, scrubby plants. In warmer places, they can form forests, but they get smaller toward the south.

Mangrove forests

Mangrove forests, also called mangrove swamps or mangals, grow in tropical and subtropical areas near coasts and tidal rivers. They grow in salty water that comes in with the tides. Only a few types of trees can survive in these tough places.

These special trees have roots that help protect coastlines from strong waves and storms. They also give homes to many sea animals, like small fish and crabs, and help keep the environment healthy by storing carbon in the ground. Because they are important for nature and people, many places work hard to protect mangrove forests.

Mangrove microbiome

See also: Plant microbiome

Plant microbiomes are important for mangroves. These tiny living things help mangroves grow by releasing special substances and helping them take in nutrients like phosphorus and nitrogen. Most studies have looked at common plants like rice, barley, wheat, maize, and soybean, but mangroves have their own unique microbial friends too.

Mangrove roots have many microbes that help them survive. These microbes change nutrients into forms the mangrove can use and protect it from harmful germs. In return, the mangrove gives the microbes food from its roots. This teamwork is important for the mangrove’s health and growth. Scientists have found many types of these helpful microbes, including bacteria and fungi, which live close to the mangrove roots and help in many ways.