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Ecosystems

  1. What is an ecosystem?
  2. Energy flows
  3. Food chains
  4. Type of Ecosystem

    Productivity (103 kcal/m2/yr)

    desert

    <0.5

    deep ocean

    <1

    grasslands

    0.5 to 3.0

    deep lakes

    mountain forests

    some agriculture

    continental shelf

    moist forests

    3 to 10

    shallow lakes

    moist grasslands

    most agriculture

    some estuaries

    10 to 25

    springs

    coral reefs

    bayous

    2 cal

    60 min

    12 hr

    300 d

    104 cm3

    1 kcal

    4,320 * 103 kcal

    cm2 min

    hr

    day

    yr

    m2

    103 cal

    m2 year

  5. Physical limits
  6. The main abiotic factors are:
  7. Biochemicals
  8. Mineral cycles-Beneficial elements (biogeochemical cycles)
  9. Biomes

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ANTHONY G BENOIT
ROOM 201B
(860) 885-2386

abenoit@trcc.commnet.edu