Articles | Volume 12, issue 23
Biogeosciences, 12, 6955–6984, 2015
https://doi.org/10.5194/bg-12-6955-2015
Biogeosciences, 12, 6955–6984, 2015
https://doi.org/10.5194/bg-12-6955-2015

Research article 07 Dec 2015

Research article | 07 Dec 2015

Drivers and uncertainties of future global marine primary production in marine ecosystem models

C. Laufkötter et al.

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We analyze changes in marine net primary production (NPP) and its drivers for the 21st century in 9 marine ecosystem models under the RCP8.5 scenario. NPP decreases in 5 models and increases in 1 model; 3 models show no significant trend. The main drivers include stronger nutrient limitation, but in many models warming-induced increases in phytoplankton growth outbalance the nutrient effect. Temperature-driven increases in grazing and other loss processes cause a net decrease in biomass and NPP.
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