Module 7: Vertebrates II Part 1

November 29, 2012 PowerPoint Honors Marine Biology Module 7 Vertebrates II Nov 29

Deep beneath the ground we stand on, below the strip malls and the condos and the lush green of the golf courses, runs a river of water that makes life in Florida possible. The underground aquifer rushes through Swiss cheese caverns, its hidden flow bubbling up to the surface in Florida’s estimated 1,000 springs — the greatest concentration of springs on Earth.

A century ago Florida’s gin-clear springs drew presidents and millionaires and tourists galore who sought to cure their ailments by bathing in the healing cascades. Now the springs tell the story of a hidden sickness, one that lies deep within the earth.

Read the Times investigation into the health of Florida’s springs

http://www.tampabay.com/specials/2012/reports/florida-springs/index.html

The Florida Everglades is another one of Florida’s treasures of natural resources that is a unique ecosystem that should be cared for and preserved.

Alligators, lizards, snakes and turtle are reptiles that are covered with trough, dry scales that help prevent water loss.  Many of these reptiles breathe air with their lungs and must return to the surface of the ocean to breathe.  There eggs are laid on dry land.  Some biologists consider most reptile species to be behavioral thermoregulators in that they can and do move themselves in and out of sunny and shady areas to regulate body temperatures.  They do not have internal mechanisms for maintaining constant body temperatures like endotherms, but they use external conditions.

Marine birds are present in a wider array of sea environments than are marine reptiles, because they are endothermic and extremely mobile.This allows them to maintain a more constant body heat no matter what the surrounding temperatures are.  Their bodies are covered in feathers, which behave as a coat to keep in body heat when needed.  If the bird needs to release body heat, feathers can be shed to “thin” the coat.  Most birds have waterproof feathers, they have a special gland at the base of their tail that produces oil that they use to cover their feathers.  Like sea turtles, sea birds have salt glands that remove extra salts from their bodies.  Thank you M. Press for the following videos.

Homework

  1. Read Module 7 pages 169 – 182
  2. OYO Questions 7.5 -7.12
  3. Study Guide:  Define d – e ; 13 – 28
  4. Class Challenge – Bring you cutest baby picture!
  5. Class Quiz:  Bird Trivia
  6. Complete lab on bird feathers

Have a good week! – Mrs. Smith

 

 

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