Marine Biology MAR111

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Marine BiologyMAR111

• Prof. Nancy Black
• Lecture Tu Th 600 725 pm
• Lab Tu 740 940 pm

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• Required books/materials
• Marine Biology, 9th edition, Peter Castro and
  Michael E. Huber. McGraw-Hill Higher Education.
  2013. (recent older editions are OK)
• Gloves for dissections.

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• Field Trips
• North Shore Stony Brook Harbor
• South Shore Cupsogue Beach (5)

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Grading 1000 points total Lecture 60 3
lecture midterm exams (200 points each) drop
lowest midterm exam grade 400
points cumulative final exam 200 points Lab
40 midterm quiz 50 pts practical final exam
100 pts 10 lab assignments X 15 pts each (drop
lowest lab) 135 pts 2 field trips X 50 pts
each 100 pts overall attendance /
participation 15 pts
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Printing Powerpoint Slides
2-3 per vertical page (3 gives lines for notes)
4 per horizontal page write in margins
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Marine Biology

• The study of the organisms that live in the sea

http//www.daviddarling.info/images/diatoms.jpg
http//www.sfos.uaf.edu/research/arcdiv/watercolum
n/copepod/images/full/calanus_marshallae.jpg
http//www.sfos.uaf.edu/research/arcdiv/seabottom/
asteroids/images/full/ctenodiscus-crispatus.jpg
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Tools of Marine Biology Scientific Method

• Observe, describe
• Coral reef

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Tools of Marine Biology Scientific Method

• Observe, describe
• Stony corals
• Animal polyps have algae cells inside

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Tools of Marine Biology Scientific Method

• Observe, describe
• Corals once green and brown are now white
• Water temperatures were 30C (86F) or more for
  several weeks

http//www.york.ac.uk/depts/biol/units/symbiosis/i
mages/coralbleach.jpg
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Tools of Marine Biology Scientific Method

• Ask questions
• Why did the corals turn white?
• Did the warm temperatures cause the problem?
  Pollution? Salinity changes? UV?
• Is it permanent or will the coral recover?

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Tools of Marine Biology Scientific Method

• Choose one question to address, then create a
  hypothesis
• The prolonged warm water temperatures caused the
  bleaching

http//appserv.pace.edu/emplibrary/thermometer.gif
AFP/Queensland University/File/Ove Hoegh-Guidberg
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Tools of Marine Biology Scientific Method

• Conduct a controlled experiment to test the
  hypothesis
• Collect some identical corals
• Place some in normal temperature water and
  others in warmer water

http//www.aqob.com.au/images/product/detail/72ros
scoralbleachingtanks.jpg
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Tools of Marine Biology Scientific Method

• Experiment results, statistics
• Corals in lab held in the warmer water
  bleached after several weeks while those in the
  control water did not

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Tools of Marine Biology Scientific Method

• If confirmed, then more tests of the hypothesis
• Experiment must be repeatable
• Test other species, temperatures, time frames
• If not, then test an alternative hypothesis

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Tools of Marine Biology Scientific Method

• Theory
• After the hypothesis has passed extensive
  testing and is accepted as true, it may be
  considered a theory
• Explanation supported by evidence
• Beware of misuse (scientific theory is not a
  guess, thats a hypothesis)

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Tools of Marine Biology Scientific Method
http//www2.nau.edu/gaud/bio372/class/behavior/sc
imeth.gif