Harvard PhD thesis, Thomas J. Goreau, Department of Geology, 1981

This work established that the major natural regulator of the ozone layer was produced by an entirely different microbiological mechanism, the oxidation of ammonium to nitrate, not the anoxic reduction of nitrate as had been previously thought, and that it’s production was extremely sensitive to oxygen concentrations. It also established methods to measure greenhouse gas emissions from soils to compare the effects of human http://www.raybani.com/ disturbed ecosystems on the chemistry of the atmosphere with natural ecosystems.

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