Coral Reef

Coral Reef

• 1.
  CORAL  REEF   SheetalWagh
• 2.
  WHAT  ARE  CORAL  REEFS?   •  Coral  reefs  are  underwater   structures  made  from   calcium  carbonate  secreted   by  corals.   •  They  are  colonies  of  Any   living  animals  found  in   marine  waters  that  contain   a  few  nutrients.   •  The  bulk  of  coral  reefs  is   made  up  of  coral  skeletons   from  mostly  intact  coral   colonies   December  3,  15   Coral  reef   2  
• 3.
  •  Most  coral  reefs  are   built  from  stony  corals,   which  in  turn  consists  of   polyps  that  cluster  in   groups.   •  The  polyps  are  like  Any   sea  anemone.   •  Coral  reefs  occupy  less   than  0.1%  of  the  world’s   ocean  surface.   December  3,  15   Coral  reef   3  
• 4.
             Provide  home  for  !!      MOLLUSCS      CRUSTACEANS      ECHINODERMS      CNIDARIANS    SPONGES   December  3,  15   Coral  reef   4  
• 5.
  Anatomy  of  a  coral  polyp   December  3,  15   Coral  reef   5  
• 6.
  December  3,  15   Coral  reef   6                                                                                  BRAIN  CORAL  
• 7.
         (A)  ATOLL  REEF    (B)  FRINGING  REEF   (C)  BARRIER  REEF                TYPES  OF  CORAL  REEFS   December  3,  15   Coral  reef   7  
• 8.
  ATOLL  REEF   Reef  of  the  Maldives,   Indian  Ocean.   December  3,  15   Coral  reef   8  
• 9.
  FRINGING  REEF   • a  reef  system  that  grows  fairly  close  to  (or  directly  from)   the  shore,  with  an  enArely  shallow  lagoon  or  none  at  all   December  3,  15   Coral  reef   9  
• 10.
  BARRIER  REEF   • A  reef  system  parallel  to  shore  and  is  separated  from  it  by  a   wide  lagoon  that  contains  atleast  some  deep  porAons.   December  3,  15   Coral  reef   10  
• 11.
  December  3,  15   Coral  reef   11   The  Great  Barrier  Reef  is  the   world's  largest  coral  reef   system     It  is  composed  of  over  2,900   individual  reefs  and  900   islands  stretching  for  over   2,600  kilometres  (1,600  mi)   over  an  area  of  approximately   344,400  square  kilometres   (133,000  sq.  mi)     The  reef  is  located  in  the  Coral   Sea,  off  the  coast  of   Queensland,  Australia   A  scuba  diver  looking  at  a   giant  clam  on  the  Great   Barrier  Reef  
• 12.
  SIGNIFICANCE  OF  CORAL  REEF      MEDICINAL  VALUE    PROTECTIVE  IN  FUNCTION    TOURISM    JOB  OPPORTUNITIES    AS  CURE  FOR  SEVERAL  DISEASES  December  3,  15   Coral  reef   12  
• 13.
  THREATS   Coral  reefs  are  dying:-­‐   Reasons-­‐   •  coral  mining   •  agricultural  and  urban  runoff     •  polluLon     •  disease   •  sea  temperature  rise   •  pH  changes  from  ocean  acidificaLon   •  greenhouse  gas  emissions   December  3,  15   Coral  reef   13  
• 14.
  December  3,  15   Coral  reef   14   ProtecLon   •  Marine   protected   areas   (MPAs)   have   become   increasingly  prominent  for  reef  management   •  MPAs   promote   responsible   fishery   management   and   habitat   protecLon.   Much   like   naLonal   parks   and   wildlife   refuges,   MPAs   restrict   potenLally   damaging   acLviLes   •  MPAs  encompass  both  social  and  biological  objecLves,   including  reef  restoraLon,  aestheLcs,  biodiversity,  and   economic  benefits  
• 15.
  December  3,  15   Coral  reef   15