4 TYPES OF MANGROVES (PART 1)

The word ";Mangroves"; refers to a group of plants which may actually belong to several families
(species that distinctly belong to their own evolutionary group). The term therefore indicates an
ecological rather than a taxonomical (scientific classification) grouping - the species are not related.
They are unique plants because of their ability to grow in unstable tough environments.
Mangroves are unique because they are able to thrive in areas where the water is poor in oxygen
content, in salt water, in fresh water and in brackish water (a mixture of salt and fresh water).
Mangroves are fast-growing trees taking several years to reach up to 25 meters when they are fully
grown. Of the seven types of mangroves, three are most dominant, the red, black and white types.
Roots of the Black Mangrove ( HINH)
Easily identified by its roots which are specialized to take in oxygen. Roots look like tubular bristles
which stick out vertically
and trap oxygen for its oxygen-starved root systems. These bristles are known as pneumatophores.
The Black Mangrove is tolerant of high saline conditions and the trees grow in isolated groups or
woodland formations.
Individual trees are fairly large and may grow up to 20-25 meters in height and 40 centimetres in
diameter at breast height.
Black mangroves produce seeds in abundance which occur throughout the year. The seeds are
viviparous in nature, meaning
their seeds germinate while still being attached to the parent tree. This species regenerates and
coppices well and can
therefore be managed under a coppice system, which is an even-agedsilvicultural system for which
the main regeneration
method is vegetative sprouting of either suckers (from the existing root systems of cut trees) or
shoots (from cut stumps).
Uses
The Black Mangrove is the most important and dominant mangrove species in the open mud flats of
Guyana . The seeds
are actually edible and can be prepared into a delicious meal- but caution! Unless prepared in a
certain way, your meal
can be toxic!


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