Mangroves power point
Upcoming SlideShare
Loading in...5
×
 

Mangroves power point

on

  • 14,977 views

 

Statistics

Views

Total Views
14,977
Views on SlideShare
14,950
Embed Views
27

Actions

Likes
4
Downloads
694
Comments
3

4 Embeds 27

http://www.slideshare.net 11
http://plc.edmodo.com 9
http://www.edmodo.com 6
http://plc.edu.edmodo.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
  • v good
    Are you sure you want to
    Your message goes here
    Processing…
  • Great Powerpoint to share the basics about Mangroves - Thank you
    Are you sure you want to
    Your message goes here
    Processing…
  • Informative
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Mangroves power point Mangroves power point Presentation Transcript

  • Mangroves
    • salt-tolerant, woody trees – really land plants
    • flowering plants - with true roots, stems, and leaves
    • warm, tropical and sub-tropical regions
    • cover 60 – 75% of tropical shores
    • found in protected, coastal areas
    • intertidal
    • where salt marshes would be in temperate zone
    • salty, muddy water
    • anaerobic sediments
  • Functions:
    • protect coastal lands from storms and erosion
    • filter runoff
    • accrete
    • sediments
    • gradually extend land seaward – eventually replaced by land plants = ecological succession
    Functions:
  • Habitat Value:
    • very important for
    • other organisms
    • epiphytic organisms live on prop roots:
    • sponges, tunicates, worms, anemones, snails, crabs, shrimp, lobster
  • Habitat Value:
    • some species live in mud:
    • crabs, mudskippers (Pacific)
  • Habitat Value:
    • many juvenile coral reef fish live here (later move to reef)
    • food and protection from predators among roots
  • Habitat Value:
    • many birds nest in branches away from land predators:
    • egrets, doves, pelicans, etc
  • Zonation
    • four main types in Caribbean:
    • red, black, white, buttonwood – moving inland
  • different types of mangroves
  •  
  • Red Mangrove
    • most prominent
    • large prop roots
    • anchor trees in soft mud
    • stabilize and trap
    • sediments
    • grow down from
    • branches into water
    • up to 30 ft. tall
  • Red Mangrove
    • thick, waxy leaves - reduce water loss
    • exclude salt at roots
  • Red Mangroves
    • pencil seeds - germinate while still attached to the tree
    • pointy – if low tide - falls into mud, sticks there, grows
    • if high tide - floats to other areas
  • Black Mangroves
    • next inland
    • snorkel roots – ( pneumatophores )
    • - environment more severe than red mangrove
    • - anaerobic mud – high decomp.
    • - roots grow upward
    • - obtain oxygen from air above - act as straws
  • Black Mangroves
  • Black Mangroves
    • salt pores (glands) - secrete excess salt from plant
    • can sometimes see salt crystals - leaves covered with salt
  • White Mangroves
    • farthest from water
    • cannot tolerate
    • flooding
  • White Mangroves
    • excrete salt from leaves and at base of stem – salt glands
  • Buttonwood
    • not true mangrove, but mangrove associate
  • Human Uses
    • protect coastal lands from storms and erosion, filter runoff
    • ex: tsunami
    • - where mangroves removed – land destroyed
    • - where mangroves remained – land protected
  • Human Uses
    • cutting to make charcoal
    • honey from flowers
    • medicine - from bark
    • dyes - from bark
    • cattle feed - leaves
  • Human Impacts
    • half of world’s mangroves destroyed – more in Southeast asia
    • cut to make marinas - destroys habitat and increases erosion
  • Human Impacts
    • filled in land - for development
    • ex: St. Thomas racetrack built on filled in mangroves
    • broken when boats tie to them
    • cut for charcoal
  • Human Impacts
    • destroyed for shrimp mariculture – for ponds
    • mangroves are a critical habitat to be restored