Class Note for GEOS 212 at UA
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This 2 page Class Notes was uploaded by an elite notetaker on Friday February 6, 2015. The Class Notes belongs to a course at University of Arizona taught by a professor in Fall. Since its upload, it has received 13 views.
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Date Created: 02/06/15
LECTURE 24 OUTLINE Hydrothermal Vents Deep Sea Communities 7 Nov 25 2008 Life Zones pro le view Openocean The Deep Twilight zone 5403 10050 39 Sperm whale depth of squid 39 Changes with depth 39 Main strategy of most animals at depth 39 Huge eyes 7 why needed 39 Why no hard body parts needed at depth 39 Use of stinging cells 39 Use of bioluminescence to avoid predation from below Dark zone 1 0050116 10 39 Why large eyes not needed at depth 39 Predation strategy of Fangtooth Why is red color an advantage Another method of detecting prey Predation strategy of Gulper Eel How is bioluminescence produced 1 reason for bioluminescence 2 reason for bioluminescence Unusual mating strategy of male Angler Fish Blue headlights Advantage of red headlights 3 reason for bioluminescence depth charges 39 What is the largest migration on planet and why does it occur 39 Photic zone description 39 Food source of most organisms that live below 150 meters Midocean ridge 131 15 13643 39 Dimensions of MOR 39 When explored for rst time Temperature of water List of organisms seen at vents How is energy acquired Why is mobility required 39 Potential origin of life on earth Black Smoke Hydrothermal vents are one of the most spectacular features on the seafloor They form in places where there is volcanic activity such as along the MidOcean Ridge Water seeps through cracks in the seafloor and is heated by molten rock deep below the ocean crust to as high as 400C The hot fluid rises to the surface and gushes out of the vent openings This hydrothermal fluid carries with it dissolved metals and other chemicals from deep beneath the ocean floor
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