19+BIOL151X+S11+ecosystems+2+Sakai

19+BIOL151X+S11+ecosystems+2+Sakai - 18 Community Ecology &...

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1 Ecosystem Biology Energy and material flow through ecosystems Biogeochemical cycles (Carbon and Nitrogen) Human impact on ecosystems
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2 Gross primary productivity is higher than net primary productivity. The difference between the two is A. the amount of energy producers burn when they metabolize. B. typically the ratio between the biomass of producers and the biomass of consumers. C. unimportant for ecosystem productivity. D. energy that is lost into outer space due to physiological inefficiencies. E. untapped energy that is stored in plant roots.
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3 Terrestrial Primary Production NPP = GPP – autotroph respiration
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4 Distribution of Primary Production Campbell & Reece Fig. 54.04 (7th ed)
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5 What limits primary production?
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6 In this system, primary production is limited by A. Nitrogen B. Phosphorous C. Carbon D. None of these.
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7 Biomass “Pyramids” Campbell & Reece Fig. 55.11
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8 Why are big, fierce animals rare? Most big, fierce animals are tertiary consumers, which implies that
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This note was uploaded on 05/01/2011 for the course BIOL 1510 taught by Professor Jungh.choi during the Spring '07 term at Georgia Institute of Technology.

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19+BIOL151X+S11+ecosystems+2+Sakai - 18 Community Ecology &...

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