Mai,
The greatest threat to coral reefs is probably pollution, in the form of
nutrient enrichment and sedimentation.  These "methods" have damaged large
areas of coral reefs in many parts of the world.  Another method would be
the causative agent in coral bleaching (and subsequent death) which has
been observed in many areas, and was particularly widespread in the
Caribbean recently.  The cause is not well understood, but may be related
to high temperatures, viruses, or possibly iron deficiencies.

Dynamite fishing, anchor dragging, dredging and other destructive
mechanical methods also contribute to coral reef destruction, but are
probably relatively small impacts when compared to coral bleaching and
pollution.

On Wed, 10 Apr 2002 15:40:20 +0200, An Mai Thai <[log in to unmask]> wrote:

>Dear Sir/Madam
>
>My name is Mai Thai An, 1st year student of Vrije Universiteit Brussel.
>Now I am study couse Ecological Marine Management
>I would like to know any information about the methods can destroy coral
reefs and damage the fish population, prevent fishing using damage that
are applied in many countries, especially in Japan.
>If you have any information sources related to the matter
>mentioned above, I would appreciate if you kindly send me via this email
address.
>
>Thank you very much.
>
>Best regards.
>
>><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>
>       To leave the Fish-Sci list, Send blank message to:
>        mailto:[log in to unmask]
> For information send INFO FISH-SCI to [log in to unmask]
>><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>

><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>
       To leave the Fish-Sci list, Send blank message to:
        mailto:[log in to unmask]
Vacation? send SET FISH-SCI NOMAIL to [log in to unmask]
><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>