Researchers report that a record of the coral skeleton nitrogen isotope ratio (15N/14N) from the outer reef of Bermuda exhibited minimal changes over the past 130 years, in contrast to published model simulations predicting a significant decline in the 15N/14N ratio during the same period due to anthropogenic atmospheric nitrogen inputs, suggesting that anthropogenic nitrogen deposition in the North Atlantic may be less than previously thought.
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Article #18-01049: "Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene," by Xingchen Tony Wang et al .
MEDIA CONTACT: Xingchen Tony Wang, California Institute of Technology, Pasadena, CA; tel: 609-937-2536; e-mail: xingchen@caltech.edu
Proceedings of the National Academy of Sciences