Coral Bleaching - PowerPoint PPT Presentation

Loading...

PPT – Coral Bleaching PowerPoint presentation | free to download - id: 5234b-YzgxM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Coral Bleaching

Description:

Coral reef collection of coral heads. Corals & Zooxanthellae. Corals provide zooxanthellae: ... Global Coral Reefs. Coral Bleaching Hotspots. Global Sea ... – PowerPoint PPT presentation

Number of Views:446
Avg rating:3.0/5.0
Slides: 12
Provided by: christine71
Learn more at: http://people.uncw.edu
Category:
Tags: bleaching | coral | reef

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Coral Bleaching


1
Coral Bleaching
  • Chrissy Covington
  • October 14, 2004
  • Introduction to Coastal Management
  • Dr. Hosier Dr. Cleary

2
Basic Anatomy of Corals
  • Coral polyp sessile organism, deposits a
    calcium carbonate cup around itself
  • Coral heads collection of calcified polyps,
    cemented together by coralline algae
  • Coral reef collection of coral heads

3
Corals Zooxanthellae
  • Corals provide zooxanthellae
  • secure home
  • steady supply of carbon dioxide
  • Zooxanthellae provide corals
  • fixed carbon compounds for energy
  • enhanced calcification
  • nutrients
  • coloration

4
Coral Bleaching
  • Loss of color from corals
  • Results from loss of zooxanthellae or loss of
    pigments from zooxanthellae
  • Corals lose 60-90 of their zooxanthellae, each
    zooxanthella loses 50-80 of its pigment

5
Causes of Bleaching
  • Increased sea surface temperatures, due to global
    warming
  • Human disturbances
  • Sedimentation
  • Coastal pollution
  • Sudden exposure

6
Global Coral Reefs
7
Coral Bleaching Hotspots
8
Global Sea Surface Temperatures
9
Areas affected before mass bleaching event of 1998
Degree of bleaching red high yellow
medium blue low green - none
10
Areas affected after mass bleaching event of 1998
Degree of bleaching red high yellow
medium blue low green - none
11
Conclusion
  • Coral bleaching most likely caused by effects of
    global warming
  • Only solution is to combat global warming by
    reducing greenhouse gas emissions
About PowerShow.com