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Analysis of atmospheric inputs of nitrate to a temperate forest ecosystem from 17
 

Summary: Analysis of atmospheric inputs of nitrate to a temperate
forest ecosystem from 17
O isotope ratio measurements
A. W. Costa,1
G. Michalski,2
A. J. Schauer,3
B. Alexander,4
E. J. Steig,3
and P. B. Shepson1,2,5
Received 23 March 2011; revised 22 June 2011; accepted 27 June 2011; published 5 August 2011.
[1] Determining the fate of atmospheric N deposited in
forest ecosystems is essential to understanding the
ecological impact of increased anthropogenic N deposition.
We hypothesize that a significant fraction of soil nitrate
(dry deposited HNO3 and wet deposited NO3
-
) in northern
Michigan is derived from atmospheric deposition. To test
this idea, soil, rainfall, and cloud water were sampled in a
temperate forest in northern Lower Michigan. The fraction

  

Source: Alexander, Becky - Department of Atmospheric Sciences, University of Washington at Seattle

 

Collections: Environmental Sciences and Ecology; Geosciences