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- Title
The Arctic Ocean Nitrogen Cycle.
- Authors
Arrigo, Kevin R.; Mills, Matthew M.; Juranek, Lauren W.
- Abstract
Although the Arctic Ocean is small, its shallow shelves and highly productive coastal waters make it an important component of global biogeochemical cycling, especially of nitrogen (N). Because inorganic forms of dissolved N exist in so many different oxidation states, the cycling of N can be quite complex. In this review, we describe the current understanding of the major conduits bringing N into Arctic surface waters as well as the key physical and biological processes that are responsible for the transformation from one form of N to another. We also discuss the environmental factors that are currently controlling these transformations and how this may change in a future Arctic. Plain Language Summary: Nitrogen is the key element limiting the rate of growth of phytoplankton in many parts of the global ocean. Nowhere is this more true than in the shallow waters of the Arctic Ocean. This review describes the cycling of nitrogen within the Arctic Ocean. It includes the key processes controlling the distribution of nitrogen within the water column and sediments and the environmental factors that control these processes. Key Points: The land‐locked and shallow nature of the Arctic Ocean make it unique among the major ocean basins of the worldThe shallow shelves of the Arctic Ocean are the site of important biological transformations within the nitrogen cycleOngoing environmental changes may result in significant alterations of the Arctic nitrogen cycle and its role in global biogeochemistry
- Subjects
TERRITORIAL waters; WATER depth; BIOGEOCHEMICAL cycles; NITROGEN in water; OXIDATION states
- Publication
Journal of Geophysical Research. Biogeosciences, 2024, Vol 129, Issue 7, p1
- ISSN
2169-8953
- Publication type
Article
- DOI
10.1029/2024JG008088