Nitrogen and phosphorus differentially control marine biomass production and stoichiometry.

ABSTRACT: Globally averaged, surface particulate nitrogen and phosphorus approximate the 16:1, N:P "Redfield ratio." In observations, N:P ratios vary latitudinally at ranges attributable to both phytoplankton community composition and physiological acclimation, but their relative contributions to the N:P ratio remain unclear. Here, results from a 29-day mesocosm experiment highlight how inorganic nitrogen and/or phosphorus nutrient supply can affect the bulk particle stoichiometry of a North Pacific Subtropical Gyre plankton community. Nitrogen additions, with and without phosphorus, increase total productivity and diatom abundance, whereas treatments with just phosphorus additions remain similar to the no-nutrient addition control. Continual nitrogen supply without phosphorus results in higher part

SUBMITTER: Seelen EA 

PROVIDER: S-EPMC12219287 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature