Articles | Volume 18, issue 15
https://doi.org/10.5194/bg-18-4491-2021
https://doi.org/10.5194/bg-18-4491-2021
Research article
 | 
02 Aug 2021
Research article |  | 02 Aug 2021

Stable isotope ratios in seawater nitrate reflect the influence of Pacific water along the northwest Atlantic margin

Owen A. Sherwood, Samuel H. Davin, Nadine Lehmann, Carolyn Buchwald, Evan N. Edinger, Moritz F. Lehmann, and Markus Kienast

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Short summary
Pacific water flowing eastward through the Canadian Arctic plays an important role in redistributing nutrients to the northwest Atlantic Ocean. Using samples collected from northern Baffin Bay to the southern Labrador Shelf, we show that stable isotopic ratios in seawater nitrate reflect the fraction of Pacific to Atlantic water. These results provide a new framework for interpreting patterns of nitrogen isotopic variability recorded in modern and archival organic materials in the region.
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