WLDM Test 2 Section 2

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Author:
alyssau12
ID:
269834
Filename:
WLDM Test 2 Section 2
Updated:
2014-04-08 19:39:38
Tags:
WLDM
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Description:
TEST 2
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  1. a network involving the interactions of living and non-living elements in a manner that sustains life:
    ecosystem
  2. What does management do to ecosystems?
    manipulates parts of ecosystems and communities
  3. where do ecosystems get energy?
    • from the sun
    • its self-sustaining
  4. Are food chains 100% efficient?
    no, about 10%
  5. Where is less energy available?
    the further you move up the food chain/web
  6. the functional role/occupation of an organism in its environment:
    niche
  7. What happens when niches overlap?
    competition
  8. a worldwide grouping of communities having similar vegetation:
    biome
  9. What are the types of desert?
    • hot & dry
    • semiarid
    • coastal
    • cold
  10. What are the types of forests?
    • temperate (normal temperatures)
    • tropical (close to equator;warm and wet)
    • boreal (located in the north; cold for long periods)
  11. What are the types of grasslands?
    • tropical (savannas)¬†
    • temperate¬†(largest biome in NA; fertile; used for cropland)
  12. What are the types of tundra?
    • arctic
    • alpine
  13. the orderly progression through time of changes in community composition, usually described in terms of plant life:
    succession
  14. What is primary succession?
    not previously vegetated
  15. What is secondary succession?
    sites previously vegetated
  16. What is a pioneer community?
    first community after a disturbance
  17. number of species in a community:
    diversity
  18. relative constancy in the abundance of populations:
    stability

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