CC106 Information

Below is a list of important topics from lectures since CC106’s last exam (not including the April 16th lecture and those after).

Important topics:

Ecology Lectures I and II: Biomes and Physical Ecology: (Prof. Schnieder)
  • Ecology as concept- Biotic vs. abiotic traits of environment- Biome vs. biogeographic region- Levels of biological organization- Physical geography vs. biogeography- Ecological systems (population, community, ecosystem, biosphere)- Conditions conducive to high diversity of life in ecosystem- Reasons for climate variation- Coriolis effect- Hadley cells- Influence of wind on ocean currents and exchange of heat via ocean currents- Influence of topography on climate- Convergent evolution in environmentally similar but geographically separate regions.
  • Traits that form major conditions of terrestrial vs. aquatic biomes- Wallace’s line and six biogeographic regions- Relation of continental drift to biogeographic regions- Examples of biotic interchange (Bering land bridge, Panamanian land bride).
Chemical Ecology Lecture: (Prof. Atema)
  • Chemical signals are everywhere in life, inside and outside our and their bodies.
  • Currents are necessary to carry odors over any significant distance; this could vary from millimeters to kilometers.
  • Smell and taste are the two primary sense organs to respond to chemical signals: smell interacts with odors in the free flowing medium (air or water); taste tests the stuff we eat to stimulate appetite and to avoid poisoning ourselves.
  • The molecular receptors for smell and taste can be similar (because both function to interact with chemicals).
  • The anatomy of smell and taste sense organs is very different, including the mouth map of the taste brain and the glomeruli in the smell brain.
Ecology III Lecture: Population Growth: (Prof. Schneider)
  • Definition of a population.
  • BD model of population size: essentially, births increase and deaths decrease population size.
  • Per capita growth rate.
  • Life Table.
  • Life histories determine population growth rates.
  • Populations grow multiplicatively, but limiting resources can cap population growth.
  • Limits to population growth.
  • Carrying capacity.
  • Human population growth.
  • Professor Schneider sent out an email this morning with the Arctic Ice assignment attached. That will be due this coming Monday in your discussions. You may work with a parter on this if you would like. Let me or Nate know if you have any questions regarding this assignment.
  • Nate and Gayle will hold a review for the final but that is a couple weeks away from now. They will send along more information about that when it gets closer.
Interesting Science Article/News:
  • Fish’s DNA May Explain How Fins Turned to Feet, New York Times:

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