What is a hypothesis?

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Exam questions
Multiple-choice and short answer (30)
Short-answer (30)
What is a hypothesis?
Long-answer (30)
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• Preparing for exams
• Read lecture notes (make use of notes at the
  bottom of slides)
• Read textbook where concepts dont make sense

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Major concepts visited so far
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Inputs 100 units
Top of atmosphere
Outputs 30 units 6 units 64 units
Surface
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Latitudinal trends in temperature are altered by
elevational effects and the effects of
continental/marine environments
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http//en.wikipedia.org/wiki/Coriolis_effect
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Water or hydrologic cycle
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Water storages and fluxes
Turnover time Reservoir size_________
Rate of output (flux out)
Turnover time for atmosphere 13,000 km3
0.026 years or 9.6 days 496,000
km3/yr
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Acidity abundance of hydrogen ions in solution
CO2 H2O H2CO3
H2CO3 HCO3- H
HCO3- H CO32-
Carbon dioxide-carbonic acid-bicarbonate system
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Leaf area index
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Texture , by weight, of sand, silt and clay
Size 0.002 - 0.05 mm
Size lt 0.002 mm
Size 0.05 - 2.0 mm
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Available water capacity (AWC) field capacity -
wilting point

• Pure sand 30-40 of volume pores
• Pure clay up to 60 of volume pores
• Higher field capacity and higher wilting point
• AWC highest in soils of intermediate texture
  (loams)

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Estimating primary productivity in aquatic
ecosystems
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Secondary production by trophic level n
Amt respired by trophic level n
Production efficiency 14/70
Amt egested as feces (waste) by trophic level n
Amt assimilated (i.e. absorbed into body) by
trophic level n
Assimilation efficiency 70/200
Amt ingested by trophic level n
Consumption efficiency 200/1000
Amt produced by trophic level n-1
Efficiency of energy transfer
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Energy flow in ecosystems
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Factors influencing decomposition rates
Decomposition of straw
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Rate of nutrient cycling
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