EVSC Key Terms (Chapter 18)

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Author:
jhl2011
ID:
217150
Filename:
EVSC Key Terms (Chapter 18)
Updated:
2013-05-01 21:43:35
Tags:
evsc 2050 introduction oceanography chapter 18 key terms
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Description:
Key terms from Introduction to Oceanography Chapter 18.
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  1. detritus feeders
    • animals that feed on detritus
    • most sand and mud animals
    • detritus is mostly formed by degraded plant/algae material
    • animals have high organic content
  2. symbiosis
    living together in intimate association of two dissimilar organisms
  3. zooxanthellae
    symbiotic microscopic organisms (dinoflagellates) found in coral and other marine organisms
  4. parasitism
    a symbiotic relationship between different organisms in which one is benefited and the other is harmed
  5. commensalism
    a symbiotic relationship between two different organisms in which one is benefited and the other is neither harmed nor benefited
  6. mutualism
    a symbiotic relationship between two different organisms in which both organisms benefit
  7. infaunal
    animals that live buried in the sediment
  8. epifaunal
    animals living attached to the sea bottom of freely over it
  9. stipe
    portion of an alga between the holdfast and the blade
  10. holdfast
    organ of benthic alga that attaches to the sea floor
  11. kelp
    any of several large, brown algae, including largest known alge
  12. macroalgae
    large, benthic multicellular algae (kelp, seaweed)
  13. bioturbation
    reworking of sediments by organisms that burrow into them and ingest them
  14. zonation
    parallel bands of distinctive plant and animal associations found within the littoral zones and distributed to take full advantage of optimal conditions for survival
  15. carrageenan
    • chemical extracted from algae
    • used as an emulsifier/stabilizer in ice cream, salad dressings, soups, puddings, cosmetics, medicines

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