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Mangrove Ecosystem

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Mangrove Ecosystem Powered By Docstoc
					Biology Presentation

        Produced by:
   Violet Lee S.6C (18)
         1999-2000
Mangrove Ecosystem
      What is Mangrove?

Plants growing in saline area
where the substratum is unstable
and consists of silt and mud. The
plants are alternatively covered
and exposed to the tides .
     Physical Environment
Low tide
High salinity
pH-slightly basic
High organic matter
Water logged
Adaptations of Animal
Communities
     Problem of unstable
         substratum
Attached to tree trunks
Make burrows
   Problem of low oxygen
          content
Building burrows with water circulating
through these burrows
Possess haemoglobin in body fluid
Respire through body surface
   Problem of high salinity
Body fluid is isotonic to sea water
uric acid waste
Hard impermeable shell
Build burrows
Mantle cavity to store water
Adaptation of Plant
Communities
    Problem of anchorage
Prop roots
Buttress root
Cable roots
droppers
  Problem of water logged
roots are negative
geotropism
Roots with lenticels
Roots with air spaces
   Problem of high salinity
Salt glands in the leaves
Possess xerophytic adaptations
      Food web in mangrove
                          Birds



                     mudskippers


            shrimp   crabs    worms   fish   oyster


reedgrass     planktons      algae       debris
  Local Sites of Mangrove
Sai Keng
Ting Kwok Road
Mai Po
Mai Po Location Map
Mangrove in Mai Po
  Significance of Wetland
Act as wildlife habitat
 Significance of Wetland

Water purification
Highly productivity eg. gei wai shrimps
Pollution Problem in Mai Po
Waste produced by
human and animals
Toxin materials
Huge amount of
organic matter

				
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posted:4/8/2012
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