Mangrove Forest | Oceana
Home / Mangrove Forest

Marine Life Encyclopedia

Marine Science and Ecosystems

Mangrove Forest

Distribution

Worldwide in tropical to warm temperate latitudes

Physical Ocean Characteristics

Keystone Species

Ecosystem Services

Mangroves are trees that live along tropical coastlines, rooted in salty sediments, often underwater. Like seagrasses, mangroves are flowering plants, but unlike seagrasses, most of the plant lives above water. The upper trunk and all of the branches and leaves of a mangrove tree live completely above the water line, while the lower trunk and the very large system of aboveground roots (called prop roots) are often covered by seawater.

This structure creates an intricate network of habitat for numerous amphibious and marine animals. Mangroves are some of the only coastal plants that can live in saltwater, and when conditions are favorable, they cover the coastline in dense patches known as mangrove forests or swamps. As the primary species involved in forming mangrove forests prefer very warm, wet conditions, they are restricted to tropical and warm temperate latitudes around the world. Indonesia, Thailand, and Mexico are some places with particularly large areas of mangrove forest.

Like reef-building corals, mangroves are ecosystem engineers – they form their own ecosystem and provide habitat for several other species. Mangroves’ root systems trap huge amounts of soft sediments, and in some areas where dense mangrove forests become established, they can be responsible for creating entire islands. Importantly, networks of these sediment-trapping forests buffer the coastline against wave-induced erosion and provide coastal ecosystems and coastal communities a vital line of defense against strong, tropical storms. Mangrove forests also provide important nursery habitat for many species of fishes and invertebrates, including those that are commercially important fisheries species, which later move to coral reefs and other ecosystems as they mature. Without the protection that mangrove forests provide the juveniles of these species, their adult populations and the fishers who rely on their capture suffer. Furthermore, mangrove forests are a primary habitat for mature individuals of many species of seabirds and waterfowl and some terrestrial animals as well.

The dual services of coastal protection and habitat for commercially important species make mangrove forests one of the most valuable ecosystems in the world. Unfortunately, like many coastal and marine ecosystems, they are being lost at an extremely rapid rate. Clear cutting for coastal development projects (including construction of shrimp farms, hotels, and other structures), harvesting for wood, and pollution all threaten mangrove forests throughout their range. Scientists estimate that at least one third of all mangrove forests have been lost during the last few decades.  Without active policies that aim to reverse the negative trend and preserve this system, mangrove forests (and the valuable services that they provide) may disappear in some areas. Such a disappearance would represent both an ecological and economic loss in coastal areas that people cannot afford.

Engage Youth with Sailors for the Sea

Oceana joined forces with Sailors for the Sea, an ocean conservation organization dedicated to educating and engaging the world’s boating community. Sailors for the Sea developed the KELP (Kids Environmental Lesson Plans) program to create the next generation of ocean stewards. Click here or below to download hands-on marine science activities for kids.

Kids Environmental Lesson Plans

Get Involved

Donate Today

SUPPORT OUR WORK TO PROTECT THE OCEANS BY GIVING TODAY

With the support of more than 1 million activists like you, we have already protected nearly 4 million square miles of ocean.

Donate Now

TAKE ACTION NOW

Support policy change for the oceans

Decision-makers need to hear from ocean lovers like you. Make your voice heard!

Sign Now

VISIT OUR ADOPTION CENTER

SYMBOLICALLY ADOPT AN ANIMAL TODAY

Visit our online store to see all the ocean animals you can symbolically adopt, either for yourself or as a gift for someone else.

Shop Today

DOWNLOAD OCEAN ACTIVITIES

HELP KIDS DISCOVER OUR BLUE PLANET

Our free KELP (Kids Environmental Lesson Plans) empower children to learn about and protect our oceans!

Learn More

FEATURED CAMPAIGN

Save the Oceans, Feed the World

We are restoring the world’s wild fish populations to serve as a sustainable source of protein for people.

Learn More

More Campaigns

Protect Habitat

Bycatch

Plastics

View All

CONTACT

Oceana International Headquarters
1025 Connecticut Avenue, Suite 200
Washington, DC 20036 USA

General Inquiries
+1(202)-833-3900
info@oceana.org

Donation Inquiries
+1(202)-996-7174
wavemaker@oceana.org

Press Inquiries
+1(202)-833-3900
press@oceana.org

OCEANA'S EFFICIENCY

BECOME A WAVEMAKER

Sign up today to get weekly updates and action alerts from Oceana.

SHOW YOUR SUPPORT WITH A DONATION

We have already protected nearly 4 million square miles of ocean and innumerable sea life - but there is still more to be done.

Donate Now

QUICK LINKS: