L10_More_Carbon_Cycle

Atmospheric co2 chemical weathering photosynthesis

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Unformatted text preview: m (photosyntheNc efficiency) Ehleringer et al., 1997, Oecologia C3 plants: most trees, shrubs, herbs, and cool- season grasses C4 plants: warm season and tropical grasses • rate of photosynthesis dependent on CO2 and temperature • rate of photosynthesis independent of CO2 concentraNon and temperature ~75% of net terrestrial primary producNvity ~55% of net terrestrial PP photo courtesy Joy Ward, U. Kansas CO2 variability on 10’s of thousands of year Nmescales TODAY TODAY Was C3 photosynthesis severely limited durin...
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This document was uploaded on 03/26/2014 for the course GEC AS.270.103 at Johns Hopkins.

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