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Effects of phytoplankton physiology on global ocean biogeochemistry and climate
- Publication Year :
- 2023
-
Abstract
- The similarity of the average ratios of nitrogen (N) and phosphorus (P) in marine dissolved inorganic and particulate organic matter, dN:P and pN:P, respectively, indicates tight links between those pools in the world ocean. Here, we analyze this linkage by varying phytoplankton N and P subsistence quotas in an optimality-based ecosystem model coupled to an Earth system model. The analysis of our ensemble of simulations discloses various feedbacks between changes in the N and P quotas, N2 fixation, and denitrification that weaken the often-hypothesized tight coupling between dN:P and pN:P. We demonstrate the importance of particulate N:C and P:C ratios for regulating dN:P on the global scale, with marine oxygen level being an important control. Our analysis provides further insight into the potential interdependence of phytoplankton physiology and global climate conditions.
Details
- Database :
- OAIster
- Notes :
- text, English
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1409459147
- Document Type :
- Electronic Resource
- Full Text :
- https://doi.org/10.1126.sciadv.adg1725