Articles | Volume 18, issue 15
https://doi.org/10.5194/bg-18-4491-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-4491-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
02 Aug 2021
Research article |
| 02 Aug 2021
| 02 Aug 2021
Stable isotope ratios in seawater nitrate reflect the influence of Pacific water along the northwest Atlantic margin
Department of Earth and Environmental Sciences, Dalhousie University,
Halifax, NS, B3H 4R2, Canada
Samuel H. Davin
Geotop Research Centre, Université du Québec à
Montréal, Montréal, QC, H3C 3P8, Canada
Nadine Lehmann
Department of Oceanography, Dalhousie University, Halifax, NS, B3H
4R2, Canada
Carolyn Buchwald
Department of Oceanography, Dalhousie University, Halifax, NS, B3H
4R2, Canada
Evan N. Edinger
Department of Geography, Department of Biology, and Department of
Earth Sciences, Memorial University of Newfoundland, St. John's, NL, A1B
3X9, Canada
Moritz F. Lehmann
Department of Environmental Sciences, University of Basel, Basel,
4056, Switzerland
Markus Kienast
Department of Oceanography, Dalhousie University, Halifax, NS, B3H
4R2, Canada
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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.
Pacific water flowing eastward through the Canadian Arctic plays an important role in...
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