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Nature 445, 159-160 (11 January 2007) | doi:10.1038/445159a; Published online 10 January 2007
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Oceanography: A marine nitrogen cycle fix?
Douglas G. Capone1 & Angela N. Knapp1
Abstract
Some of our suppositions about the marine nitrogen cycle may be wrong. An innovative analysis of nutrients at the ocean's surface reveals a feedback mechanism that might hold the whole cycle in balance.
The flow of nitrogen compounds between the oceans and the atmosphere is central to life, as nitrogen is a fundamental component of biomass and is essential for many biological processes. Although we have learned much about the nitrogen cycle of the oceans, two burning questions remain unanswered: is the marine nitrogen budget currently in balance, and are the processes that add and remove nitrogen to and from the seas closely linked?
- Douglas G. Capone and Angela N. Knapp are in the Department of Biological Sciences and at the Wrigley Institute for Environmental Studies, University of Southern California, Los Angeles, California 90089, USA. Douglas G. Capone is currently on sabbatical at the Laboratoire d'Océanographie de Villefranche, France.
Email: capone@usc.edu
Email: angelakn@usc.edu
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