DIS­TRI­BU­TION

Scuba Diver Australasia - - Conservation -

• Man­grove forests are found be­tween the lat­i­tudes of 32°N and 38°S, along the trop­i­cal and sub­trop­i­cal coasts of Africa, Aus­tralia, Asia, and the Amer­i­cas • The dis­tri­bu­tion of man­grove forests is mostly de­ter­mined by sea level and its fluc­tu­a­tions. Other fac­tors are air tem­per­a­ture, salin­ity, cur­rents, weather pat­terns, shore slope, and soil sub­strate

More than one in six man­grove species world­wide are in dan­ger of ex­tinc­tion as a re­sult of a num­ber

of fac­tors, in­clud­ing coastal devel­op­ment, cli­mate change, log­ging

and agri­cul­ture.

We have al­ready lost over half of the

world’s orig­i­nal man­grove for­est area, es­ti­mated at 32 mil­lion hectares

(approx. 80 mil­lion acres).

About half of man­grove loss has oc­curred in the last 50 years, mostly

in the last two decades, due to: • Shrimp farm­ing

• Tourism • Ur­ban­i­sa­tion • Ex­pan­sion of agri­cul­ture

• Road­ways

• Mari­nas and ports

• Other coastal devel­op­ment

The cur­rent rate of man­grove loss is ap­prox­i­mately 1% per an­num (ac­cord­ing to the Food and Agri­cul­ture Or­ga­ni­za­tion – FAO), or roughly 150,000 hectares (approx. 370,000 acres) of man­grove wet­lands

lost each year.

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