Freshwater ecosystems nitrogen cycle

Herbert, R. A. 1999. Nitrogen cycling in coastal marine sediments. EEMS Microbiol. Rev. 23 563-590. Howarth, R. W., R. Marino, J. Lane, J. J. Cole. 1988. Nitrogen fixation in freshwater, estnarine, and marine ecosystems, 1 rates and importance. Limnol. Oceanogr. 33 669-687. 

Francis, C. A., J. M. Beman, and M. M. M. Kuypers. 2007. New processes and players in the nitrogen cycle the microbial ecology of anaerobic and archaeal ammonia oxidation. Int. Soc. Microbial Ecol. J. 1 19-27. Gutknecht, J. L. M. and R. M. Goodman. 2006. Linking soil process and microbial ecology in freshwater wetland ecosystems. Plant Soil 289 17-34. 

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