L18-EcosystemsCyclesHumanImpact-ts

L18-EcosystemsCyclesHumanImpact-ts - Georgia Tech School of...

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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 Elemental Cycles and Human Impacts Boxes and fluxes Elemental cycles (global perspective) N cycle and production C cycle & climate Interconnections
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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 Biogeochemistry The biota play a critical role in the cycling of elements on Earth. C, N, P, and S all have important biologically- driven steps in their global cycles. The time scale of different compartments may range from O(y) to O(Ma). Atmosphere: time scale of months to years. Ocean: time scales of hundreds to thousands of years. Continents: time scales up to many millions of years.
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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 No numbers! Lots of missing links. Where’s the ocean ? Textbook’s N Cycle Cartoon
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Georgia Tech School of Biology Fall 2008 Krebs, Fig. 27.01 Generic Biogeochemical Cartoon What’s missing? Stuff
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L18-EcosystemsCyclesHumanImpact-ts - Georgia Tech School of...

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