Chapter 54 Biology

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Author:
misol
ID:
291550
Filename:
Chapter 54 Biology
Updated:
2014-12-14 13:10:06
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biology 112 ecology 54
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biology 112
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  1. ecology
    study of interactions among organisms and their environment (biotic and abiotic)
  2. environmental science
    application of ecology to real world problems
  3. scales of ecology
    • organismal 
    • population'
    • community 
    • ecosystem
  4. organismal ecology
    • Physiological ecology – how organisms are physiologically adapted to their
    • environment

    • Behavioral ecology – how the behavior of an individual organism contributes to survival
    • and reproductive success
  5. population ecology
    Focuses on groups of interbreeding individuals 

    understand factors affecting population growth, density and size

    species interactions (Predation, competition, and parasitism)
  6. community ecology (living part)
    how populations of species interact and form communities

    Focuses on why some areas are species rich while others poor

    • studies succession – how species composition and community structure change
    • over time (particularly after disturbance)
  7. ecosystem ecology (living and non living part)

    food chain = trophic level
    • Studies the flow of energy and cycling of chemical elements among organisms within a
    • community and between organisms and the environment
  8. ecological method
    everythings interlinked so see if removing or adding something makes difference (like predetors, competitors) makes difference or look at abiotic factors like rain and light etc
  9. environment's impact on distribution
    distribution and abundance affected by temperature, wind, availability of water and light, salinity and pH
  10. **temperature
    • ¨Most
    • important factor in the distribution of organisms

    • ¨Effects
    • on biological processes

    • ¨Inability
    • of most organisms to regulate body temperature precisely

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