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Wednesday! The week is halfway over! 2-5-14

Wednesday! The week is halfway over! 2-5-14. Starter: Yesterday we discussed photic vs. aphotic oceanic zones. What is the difference between the two zones? List plants/animals found in each zone. Oceanic Zones. Oceanic Zones.

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Wednesday! The week is halfway over! 2-5-14

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  1. Wednesday! The week is halfway over! 2-5-14 • Starter: Yesterday we discussed photic vs. aphotic oceanic zones. What is the difference between the two zones? List plants/animals found in each zone.

  2. Oceanic Zones

  3. Oceanic Zones • Several factors used to divide the ocean in to distinct life marine zones • light availability • distance from shore • water depth

  4. Zones of Light Availability photic (light) zone: upper part of the ocean where light penetrates • euphotic zone is the topmost part of the ocean where light is strongest aphotic zone: lower part of the ocean where very little or no light penetrates

  5. Photic Zone • euphotic zone is where nearly all of primary production from photosynthesis occurs • highest concentration of plants • Algae, phytoplankton, and sea grass • most ocean fish live in this zone

  6. Plants and Animals of Photic Zone

  7. Aphotic Zone • no living plants • high pressure, low temperatures • animals survive by eating detritus or other animals • animals must adapt to living with no light

  8. Zones: Distance from the Shore intertidal zone: where land an ocean overlap neritic zone: seaward from the low tide line, the continental shelf out to the shelf break oceanic zone: beyond the continental shelf

  9. Life in the Neritic Zone • well oxygenated water • low water pressure • stable temperature and salinity levels • home to photosynthetic life • phytoplankton • sargassum

  10. Animals and Plants of the Neritic Zone

  11. Oceanic Zone • larger creatures • life decreases with increasing depth • widest array of life (because it is a very broad area)

  12. Animals of the Oceanic Zone Name some animals found in this zone.

  13. Water Depth pelagic zone: open ocean of any depth benthic zone: includes any sea bottom surface abyssal zone: subdivision of benthic zone; • deep • extremely high water pressure • low temperatures What sort of organisms do you expect to find in this zone?

  14. Benthic Zone • low oxygenation of water • low temperatures • animals here feed on detritus or other animals • little or no plant life (depending on depth of water) CHECKPOINT:Why is there little or no plant life?

  15. Animals of the Benthic Zone

  16. Abyssal Zone • floor of deepest parts of ocean • most bizarre animals found here • incredible water pressure • absolutely no light • very cold temperatures • hard to survive

  17. Animals of the Abyssal Zone Fish with little or no pigment ? Why does this fish have a larger eye?

  18. Thursday 2-6-14Oceanic Zones  Murals • Groups of three to four people • Once your group is chosen, see Mrs. Slusher for topic • We will be making a mural or work of art to be hung on the wall • Required info: • Name and description of zone • Several animals found there • Facts about that zone • Pictures TURN THEM IN TO ME AT MY DESK FOR IMMEDIATE GRADING!

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