Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Darwin's Theory on Coral Reef Formation

No description

Monica Yokogawa

on 22 February 2016

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Darwin's Theory on Coral Reef Formation

How are Coral Reefs formed?
-Tourism and Income
-Aid Nutrient Cycle
-Nitrogen and Carbon
-Recycles water and air
Causes of Deaths:
Darwin's Theory on Coral Reef Formation
-Drafted his theory before embarking on the Beagle Voyage to the Pacific
- Theory states:
*starts as an extinct volcanic island
*coral grows around island (fringing reef)
*islands subsides into the sea
*coral grows upward
*lagoon forms (Barrier reef)
*as land sinks more until it's below sea level, the barrier reef becomes an atoll enclosing an open lagoon

"Where Are Coral Reefs Located?" : Global Coral Reef Distribution. Web. 21 Feb. 2016.
"Coral Reef Formation." Coral Reef: Formation. Web. 21 Feb. 2016.
"DarwinReef.htm." DarwinReef.htm. Web. 21 Feb. 2016.
"Corals." NOAA National Ocean Service Education:. Web. 21 Feb. 2016.
"Coral Reefs and Sinking Islands: Revisiting Darwin’s Other Theory." Oceans at MIT. Web. 21 Feb. 2016.
"Why Corals Die - Reef Ball Foundation." Why Corals Die - Reef Ball Foundation. Web. 21 Feb. 2016.

Coral Reefs and Sinking Islands
Darwin's Stage of Reef Formation
-built by multiple tiny animals (Anthozoa)
-limestone formation
-upon death, "skeletons" are absorbed by coral to help growth.

Examples of Sinking Islands
-Maupiti and rest of Society Islands (Barrier Reef)
-Bora Bora (Barrier Reef)
-Moorea (Barrier Reef)
-Hawaii (Sinking too fast for coral reef development)
-Tahiti (Fringing Reef)
-Destructive fishing methods
-Excessive non-point source pollution and wastes
-Ship-based pollution
-Increased sedimentation
-Unplanned tourism
-Land-based and urban construction activities
-Earthquakes, flooding, wave action, flooding and surface water runoff
-Natural Diseases
-Warmer ocean temperature fluctuations resulting in coral bleaching
-Tropical Storm Damage
-Crown of Thorns(Starfish)-predator outbreaks

-Contains the highest marine biodiversity of any area on earth
-700+ coral species,
-mostly hard coral
-mostly atolls and barrier reefs

Great Caribbean
-Mostly fringing reefs
-65 species of coral

Red Sea
-mostly fringing reefs
-300+ species of coral
-highest tolerance to extreme temp. and salinity of any region

Three Major Regions of Coral
Major types of Corals:
-Staghorn Coral
-Sea pen
-Black coral
-Pillar coral
-Blue coral
-Elkhorn coral
- Shoreline of islands
-Few organisms can survive in the weather.
- Sexual reproduction between coral animal and planktonic larvae.
- Attaches themselves to a solid surface (limestone rocks).
- This forms when . . .
- Shape of it . . .
- Cays

- It forms when the ocean islands begin to sink.
- Then it grows upward.
- Creates Lagoons.

-Monica Yokogawa
-Andrew Tran
-Zieshan Syed
-Eric Kim
Sea Anemone:
Stony Coral:
Soft Coral:

Sexually reproduces with:
Full transcript