Sea plants · Mangrove

White Mangrove

Avicennia marina (Forssk.) Vierh.

syn. Avicennia intermedia, Avicennia mindanaense

Least Concern

950

The White Mangrove, scientifically known as Avicennia marina, is a species of mangrove tree that is found in coastal areas of many tropical and subtropical regions around the world. It belongs to the family Acanthaceae and is one of the most common and widespread mangrove species.

The White Mangrove is characterized by its unique adaptations to saline water and coastal environments. It is a small to medium-sized tree, reaching a height of up to 15 meters. The tree has a dense and bushy crown with numerous branches and leaves. The leaves are thick, leathery, and oval-shaped, with a glossy green color on the upper side and a pale grayish color on the lower side. These leaves have special salt glands that help excrete excess salt absorbed from the surrounding water.

One of the most distinctive features of the White Mangrove is its pneumatophores, also known as aerial roots. These specialized roots grow vertically upward from the soil around the base of the tree and protrude above the waterline. These roots facilitate gas exchange in the mangrove's waterlogged and oxygen-deficient soil by allowing the tree to intake oxygen directly from the atmosphere.

The White Mangrove plays a crucial role in coastal ecosystems. It helps stabilize coastal soils and prevent erosion by binding sediments with its extensive root system. The tree also provides habitats and protection for various marine organisms, like fish and crustaceans, and serves as a nursery for many species of aquatic animals.

In addition to its ecological importance, the White Mangrove has various traditional and medicinal uses. In some cultures, the bark and leaves are used to treat skin ailments and gastrointestinal issues. The wood of the tree is used for fuel, construction, and making charcoal.

Despite its adaptability to coastal conditions, the White Mangrove is facing threats from deforestation, pollution, and climate change. Conservation efforts are needed to protect and preserve these valuable mangrove ecosystems and the biodiversity they support.

Why it's threatened

Residential & commercial development

Housing & urban areas

Agriculture & aquaculture

Agro-industry farming · Scale Unknown/Unrecorded

Biological resource use

Motivation Unknown/Unrecorded

Climate change & severe weather

Habitat shifting & alteration

This species is highly sensitive to herbicides (N. Duke pers. comm.). Although local estimates are uncertain due to differing legislative definitions of what is a 'mangrove' and to the imprecision in determining mangrove area, current consensus estimates of mangrove loss in the last quarter-century report an approximately 21% decline in mangrove areas in countries within this species range since 1980 (FAO 2007).

All mangrove ecosystems occur within mean sea level and high tidal elevations, and have distinct species zonations that are controlled by the elevation of the substrate relative to mean sea level. This is because of associated variation in frequency of elevation, salinity and wave action (Duke et al. 1998). With rise in sea-level, the habitat requirements of each species will be disrupted, and species zones will suffer mortality at their present locations and re-establish at higher elevations in areas that were previously landward zones (Ellison 2005). If sea-level rise is a continued trend over this century, then there will be continued mortality and re-establishment of species zones. However, species that are easily dispersed and fast growing/fast producing will cope better than those which are slower growing and slower to reproduce.

In addition, mangrove area is declining globally due to a number of localized threats. The main threat is habitat destruction and removal of mangrove areas. Reasons for removal include cleared for shrimp farms, agriculture, fish ponds, rice production and salt pans, and for the development of urban and industrial areas, road construction, coconut plantations, ports, airports, and tourist resorts. Other threats include pollution from sewage effluents, solid wastes, siltation, oil, and agricultural and urban runoff. Climate change is also thought to be a threat, particularly at the edges of a species range. Natural threats include cyclones, hurricane and tsunamis.

Threat classification from the IUCN Red List.

Comments

Please, sign in to leave a comment

Continue with a social account — yours will be created automatically.

No comments yet — be the first.

Related species

Bubble Algae

Valonia ventricosa

Serrated ribbon seagrass

Cymodocea serrulata

Sickle-leaved Cymodocea

Thalassodendron ciliatum

Last Update: June 28, 2026